Merge commit 'fe1c1198e670242f3cf9e3e1eef27cff77f3ee23'
authorMichael Niedermayer <michaelni@gmx.at>
Sun, 29 Jul 2012 20:58:17 +0000 (22:58 +0200)
committerMichael Niedermayer <michaelni@gmx.at>
Sun, 29 Jul 2012 21:04:49 +0000 (23:04 +0200)
* commit 'fe1c1198e670242f3cf9e3e1eef27cff77f3ee23':
  lavf: use dts difference instead of AVPacket.duration in find_stream_info()
  avf: introduce nobuffer option
  fate: make yadif tests consistent across systems
  vf_hqdn3d: support 9 and 10bit colordepth
  vf_hqdn3d: reduce intermediate precision
  vf_hqdn3d: simplify and optimize
  factor identical ff_inplace_start_frame out of two filters
  vf_hqdn3d: cosmetics
  avprobe/avconv: fix tentative declaration compile errors on MSVS.

Conflicts:
doc/APIchanges
ffmpeg.c
ffprobe.c
libavformat/avformat.h
libavformat/options_table.h
libavformat/utils.c
libavformat/version.h
tests/fate/filter.mak
tests/ref/fate/filter-yadif-mode0
tests/ref/fate/filter-yadif-mode1

Merged-by: Michael Niedermayer <michaelni@gmx.at>
15 files changed:
1  2 
doc/APIchanges
ffmpeg.c
ffprobe.c
libavfilter/vf_delogo.c
libavfilter/vf_gradfun.c
libavfilter/vf_hqdn3d.c
libavfilter/video.c
libavfilter/video.h
libavformat/avformat.h
libavformat/options_table.h
libavformat/utils.c
libavformat/version.h
tests/fate/filter.mak
tests/ref/fate/filter-yadif-mode0
tests/ref/fate/filter-yadif-mode1

diff --cc doc/APIchanges
@@@ -15,54 -13,12 +15,57 @@@ libavutil:     2011-04-1
  
  API changes, most recent first:
  
 -2012-07-xx - xxxxxxx - lavfi 3.0.0 - avfilter.h
 -  Add avfilter_unref_bufferp().
 -
 +2012-07-20 - xxxxxxx - lavc 54.43.100
 +  Add decode_error_flags field to AVFrame.
 +
 +2012-07-20 - xxxxxxx - lavf 54.18.100
 +  Add avformat_match_stream_specifier() function.
 +
 +2012-07-14 - xxxxxxx - lavc 54.38.100 - avcodec.h
 +  Add metadata to AVFrame, and the accessor functions
 +  av_frame_get_metadata() and av_frame_set_metadata().
 +
 +2012-07-10 - xxxxxxx - lavc 54.33.100
 +  Add av_fast_padded_mallocz().
 +
 +2012-07-10 - xxxxxxx - lavfi 3.2.0 - avfilter.h
 +  Add init_opaque() callback to AVFilter struct.
 +
 +2012-06-26 - xxxxxxx - lavu 51.63.100 - imgutils.h
 +  Add functions to libavutil/imgutils.h:
 +  av_image_get_buffer_size()
 +  av_image_fill_arrays()
 +  av_image_copy_to_buffer()
 +
 +2012-06-24 - xxxxxxx - lavu 51.62.100 - version.h
 +  version moved from avutil.h to version.h
 +
 +2012-04-11 - xxxxxxx - lavu 51.58.100 - error.h
 +  Add av_make_error_string() and av_err2str() utilities to
 +  libavutil/error.h.
 +
 +2012-06-05 - xxxxxxx - lavc 54.24.100
 +  Add pkt_duration field to AVFrame.
 +
 +2012-05-24 - xxxxxxx - lavu 51.54.100
 +  Move AVPALETTE_SIZE and AVPALETTE_COUNT macros from
 +  libavcodec/avcodec.h to libavutil/pixfmt.h.
 +
 +2012-05-07 - xxxxxxx - lavf 54.5.100
 +  Add av_guess_sample_aspect_ratio() function.
 +
 +2012-04-20 - xxxxxxx - lavfi 2.70.100
 +  Add avfilter_unref_bufferp() to avfilter.h.
 +
 +2012-04-12 - xxxxxxx - lavfi 2.68.100
 +  Install libavfilter/asrc_abuffer.h public header.
 +
 +2012-03-26 - a67d9cf - lavfi 2.66.100
 +  Add avfilter_fill_frame_from_{audio_,}buffer_ref() functions.
 +
+ 2012-07-xx - xxxxxxx - lavf 54.13.0 - avformat.h
+   Add AVFMT_FLAG_NOBUFFER for low latency use cases.
  2012-07-10 - 5fade8a - lavu 51.37.0
    Add av_malloc_array() and av_mallocz_array()
  
diff --cc ffmpeg.c
index dfca024,0000000..ce3c05a
mode 100644,000000..100644
--- /dev/null
+++ b/ffmpeg.c
@@@ -1,6167 -1,0 +1,6168 @@@
- static const OptionDef options[];
 +/*
 + * Copyright (c) 2000-2003 Fabrice Bellard
 + *
 + * This file is part of FFmpeg.
 + *
 + * FFmpeg is free software; you can redistribute it and/or
 + * modify it under the terms of the GNU Lesser General Public
 + * License as published by the Free Software Foundation; either
 + * version 2.1 of the License, or (at your option) any later version.
 + *
 + * FFmpeg is distributed in the hope that it will be useful,
 + * but WITHOUT ANY WARRANTY; without even the implied warranty of
 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 + * Lesser General Public License for more details.
 + *
 + * You should have received a copy of the GNU Lesser General Public
 + * License along with FFmpeg; if not, write to the Free Software
 + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 + */
 +
 +/**
 + * @file
 + * multimedia converter based on the FFmpeg libraries
 + */
 +
 +#include "config.h"
 +#include <ctype.h>
 +#include <string.h>
 +#include <math.h>
 +#include <stdlib.h>
 +#include <errno.h>
 +#include <signal.h>
 +#include <limits.h>
 +#if HAVE_ISATTY
 +#include <unistd.h>
 +#endif
 +#include "libavformat/avformat.h"
 +#include "libavdevice/avdevice.h"
 +#include "libswscale/swscale.h"
 +#include "libswresample/swresample.h"
 +#include "libavutil/opt.h"
 +#include "libavutil/audioconvert.h"
 +#include "libavutil/parseutils.h"
 +#include "libavutil/samplefmt.h"
 +#include "libavutil/colorspace.h"
 +#include "libavutil/fifo.h"
 +#include "libavutil/intreadwrite.h"
 +#include "libavutil/dict.h"
 +#include "libavutil/mathematics.h"
 +#include "libavutil/pixdesc.h"
 +#include "libavutil/avstring.h"
 +#include "libavutil/libm.h"
 +#include "libavutil/imgutils.h"
 +#include "libavutil/timestamp.h"
 +#include "libavutil/bprint.h"
 +#include "libavutil/time.h"
 +#include "libavformat/os_support.h"
 +
 +#include "libavformat/ffm.h" // not public API
 +
 +# include "libavfilter/avcodec.h"
 +# include "libavfilter/avfilter.h"
 +# include "libavfilter/avfiltergraph.h"
 +# include "libavfilter/buffersrc.h"
 +# include "libavfilter/buffersink.h"
 +
 +#if HAVE_SYS_RESOURCE_H
 +#include <sys/types.h>
 +#include <sys/resource.h>
 +#elif HAVE_GETPROCESSTIMES
 +#include <windows.h>
 +#endif
 +#if HAVE_GETPROCESSMEMORYINFO
 +#include <windows.h>
 +#include <psapi.h>
 +#endif
 +
 +#if HAVE_SYS_SELECT_H
 +#include <sys/select.h>
 +#endif
 +
 +#if HAVE_TERMIOS_H
 +#include <fcntl.h>
 +#include <sys/ioctl.h>
 +#include <sys/time.h>
 +#include <termios.h>
 +#elif HAVE_KBHIT
 +#include <conio.h>
 +#endif
 +
 +#if HAVE_PTHREADS
 +#include <pthread.h>
 +#endif
 +
 +#include <time.h>
 +
 +#include "cmdutils.h"
 +
 +#include "libavutil/avassert.h"
 +
 +#define VSYNC_AUTO       -1
 +#define VSYNC_PASSTHROUGH 0
 +#define VSYNC_CFR         1
 +#define VSYNC_VFR         2
 +#define VSYNC_DROP        0xff
 +
 +const char program_name[] = "ffmpeg";
 +const int program_birth_year = 2000;
 +
 +/* select an input stream for an output stream */
 +typedef struct StreamMap {
 +    int disabled;           /** 1 is this mapping is disabled by a negative map */
 +    int file_index;
 +    int stream_index;
 +    int sync_file_index;
 +    int sync_stream_index;
 +    char *linklabel;       /** name of an output link, for mapping lavfi outputs */
 +} StreamMap;
 +
 +typedef struct {
 +    int  file_idx,  stream_idx,  channel_idx; // input
 +    int ofile_idx, ostream_idx;               // output
 +} AudioChannelMap;
 +
- static const OptionDef options[] = {
++static const OptionDef *options;
 +
 +#define MAX_STREAMS 1024    /* arbitrary sanity check value */
 +
 +static int frame_bits_per_raw_sample = 0;
 +static int video_discard = 0;
 +static int same_quant = 0;
 +static int do_deinterlace = 0;
 +static int intra_dc_precision = 8;
 +static int qp_hist = 0;
 +static int intra_only = 0;
 +static const char *video_codec_name    = NULL;
 +static const char *audio_codec_name    = NULL;
 +static const char *subtitle_codec_name = NULL;
 +
 +static int file_overwrite = 0;
 +static int no_file_overwrite = 0;
 +static int do_benchmark = 0;
 +static int do_benchmark_all = 0;
 +static int do_hex_dump = 0;
 +static int do_pkt_dump = 0;
 +static int do_psnr = 0;
 +static int do_pass = 0;
 +static const char *pass_logfilename_prefix;
 +static int video_sync_method = VSYNC_AUTO;
 +static int audio_sync_method = 0;
 +static float audio_drift_threshold = 0.1;
 +static int copy_ts = 0;
 +static int copy_tb = -1;
 +static int opt_shortest = 0;
 +static char *vstats_filename;
 +static FILE *vstats_file;
 +
 +static int audio_volume = 256;
 +
 +static int exit_on_error = 0;
 +static int stdin_interaction = 1;
 +static int run_as_daemon  = 0;
 +static volatile int received_nb_signals = 0;
 +static int64_t video_size = 0;
 +static int64_t audio_size = 0;
 +static int64_t subtitle_size = 0;
 +static int64_t extra_size = 0;
 +static int nb_frames_dup = 0;
 +static int nb_frames_drop = 0;
 +static int input_sync;
 +
 +static float dts_delta_threshold = 10;
 +static float dts_error_threshold = 3600*30;
 +
 +static int print_stats = 1;
 +static int debug_ts = 0;
 +static int current_time;
 +static AVIOContext *progress_avio = NULL;
 +
 +static uint8_t *subtitle_out;
 +
 +#if HAVE_PTHREADS
 +/* signal to input threads that they should exit; set by the main thread */
 +static int transcoding_finished;
 +#endif
 +
 +#define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
 +
 +typedef struct InputFilter {
 +    AVFilterContext    *filter;
 +    struct InputStream *ist;
 +    struct FilterGraph *graph;
 +    uint8_t            *name;
 +} InputFilter;
 +
 +typedef struct OutputFilter {
 +    AVFilterContext     *filter;
 +    struct OutputStream *ost;
 +    struct FilterGraph  *graph;
 +    uint8_t             *name;
 +
 +    /* temporary storage until stream maps are processed */
 +    AVFilterInOut       *out_tmp;
 +} OutputFilter;
 +
 +typedef struct FilterGraph {
 +    int            index;
 +    const char    *graph_desc;
 +
 +    AVFilterGraph *graph;
 +
 +    InputFilter   **inputs;
 +    int          nb_inputs;
 +    OutputFilter **outputs;
 +    int         nb_outputs;
 +} FilterGraph;
 +
 +typedef struct InputStream {
 +    int file_index;
 +    AVStream *st;
 +    int discard;             /* true if stream data should be discarded */
 +    int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
 +    AVCodec *dec;
 +    AVFrame *decoded_frame;
 +
 +    int64_t       start;     /* time when read started */
 +    /* predicted dts of the next packet read for this stream or (when there are
 +     * several frames in a packet) of the next frame in current packet (in AV_TIME_BASE units) */
 +    int64_t       next_dts;
 +    int64_t       dts;       ///< dts of the last packet read for this stream (in AV_TIME_BASE units)
 +
 +    int64_t       next_pts;  ///< synthetic pts for the next decode frame (in AV_TIME_BASE units)
 +    int64_t       pts;       ///< current pts of the decoded frame  (in AV_TIME_BASE units)
 +    int           wrap_correction_done;
 +    double ts_scale;
 +    int is_start;            /* is 1 at the start and after a discontinuity */
 +    int saw_first_ts;
 +    int showed_multi_packet_warning;
 +    AVDictionary *opts;
 +    AVRational framerate;               /* framerate forced with -r */
 +    int top_field_first;
 +
 +    int resample_height;
 +    int resample_width;
 +    int resample_pix_fmt;
 +
 +    int      resample_sample_fmt;
 +    int      resample_sample_rate;
 +    int      resample_channels;
 +    uint64_t resample_channel_layout;
 +
 +    /* a pool of free buffers for decoded data */
 +    FrameBuffer *buffer_pool;
 +    int dr1;
 +
 +    /* decoded data from this stream goes into all those filters
 +     * currently video and audio only */
 +    InputFilter **filters;
 +    int        nb_filters;
 +} InputStream;
 +
 +typedef struct InputFile {
 +    AVFormatContext *ctx;
 +    int eof_reached;      /* true if eof reached */
 +    int unavailable;      /* true if the file is unavailable (possibly temporarily) */
 +    int ist_index;        /* index of first stream in input_streams */
 +    int64_t ts_offset;
 +    int nb_streams;       /* number of stream that ffmpeg is aware of; may be different
 +                             from ctx.nb_streams if new streams appear during av_read_frame() */
 +    int nb_streams_warn;  /* number of streams that the user was warned of */
 +    int rate_emu;
 +
 +#if HAVE_PTHREADS
 +    pthread_t thread;           /* thread reading from this file */
 +    int finished;               /* the thread has exited */
 +    int joined;                 /* the thread has been joined */
 +    pthread_mutex_t fifo_lock;  /* lock for access to fifo */
 +    pthread_cond_t  fifo_cond;  /* the main thread will signal on this cond after reading from fifo */
 +    AVFifoBuffer *fifo;         /* demuxed packets are stored here; freed by the main thread */
 +#endif
 +} InputFile;
 +
 +typedef struct OutputStream {
 +    int file_index;          /* file index */
 +    int index;               /* stream index in the output file */
 +    int source_index;        /* InputStream index */
 +    AVStream *st;            /* stream in the output file */
 +    int encoding_needed;     /* true if encoding needed for this stream */
 +    int frame_number;
 +    /* input pts and corresponding output pts
 +       for A/V sync */
 +    struct InputStream *sync_ist; /* input stream to sync against */
 +    int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ // FIXME look at frame_number
 +    /* pts of the first frame encoded for this stream, used for limiting
 +     * recording time */
 +    int64_t first_pts;
 +    AVBitStreamFilterContext *bitstream_filters;
 +    AVCodec *enc;
 +    int64_t max_frames;
 +    AVFrame *filtered_frame;
 +
 +    /* video only */
 +    AVRational frame_rate;
 +    int force_fps;
 +    int top_field_first;
 +
 +    float frame_aspect_ratio;
 +    float last_quality;
 +
 +    /* forced key frames */
 +    int64_t *forced_kf_pts;
 +    int forced_kf_count;
 +    int forced_kf_index;
 +    char *forced_keyframes;
 +
 +    /* audio only */
 +    int audio_channels_map[SWR_CH_MAX];  /* list of the channels id to pick from the source stream */
 +    int audio_channels_mapped;           /* number of channels in audio_channels_map */
 +
 +    FILE *logfile;
 +
 +    OutputFilter *filter;
 +    char *avfilter;
 +
 +    int64_t sws_flags;
 +    int64_t swr_dither_method;
 +    double swr_dither_scale;
 +    AVDictionary *opts;
 +    int is_past_recording_time;
 +    int unavailable;  /* true if the steram is unavailable (possibly temporarily) */
 +    int stream_copy;
 +    const char *attachment_filename;
 +    int copy_initial_nonkeyframes;
 +
 +    int keep_pix_fmt;
 +} OutputStream;
 +
 +
 +#if HAVE_TERMIOS_H
 +
 +/* init terminal so that we can grab keys */
 +static struct termios oldtty;
 +static int restore_tty;
 +#endif
 +
 +typedef struct OutputFile {
 +    AVFormatContext *ctx;
 +    AVDictionary *opts;
 +    int ost_index;       /* index of the first stream in output_streams */
 +    int64_t recording_time;  ///< desired length of the resulting file in microseconds == AV_TIME_BASE units
 +    int64_t start_time;      ///< start time in microseconds == AV_TIME_BASE units
 +    uint64_t limit_filesize; /* filesize limit expressed in bytes */
 +} OutputFile;
 +
 +static InputStream **input_streams = NULL;
 +static int        nb_input_streams = 0;
 +static InputFile   **input_files   = NULL;
 +static int        nb_input_files   = 0;
 +
 +static OutputStream **output_streams = NULL;
 +static int         nb_output_streams = 0;
 +static OutputFile   **output_files   = NULL;
 +static int         nb_output_files   = 0;
 +
 +static FilterGraph **filtergraphs;
 +int               nb_filtergraphs;
 +
 +typedef struct OptionsContext {
 +    /* input/output options */
 +    int64_t start_time;
 +    const char *format;
 +
 +    SpecifierOpt *codec_names;
 +    int        nb_codec_names;
 +    SpecifierOpt *audio_channels;
 +    int        nb_audio_channels;
 +    SpecifierOpt *audio_sample_rate;
 +    int        nb_audio_sample_rate;
 +    SpecifierOpt *frame_rates;
 +    int        nb_frame_rates;
 +    SpecifierOpt *frame_sizes;
 +    int        nb_frame_sizes;
 +    SpecifierOpt *frame_pix_fmts;
 +    int        nb_frame_pix_fmts;
 +
 +    /* input options */
 +    int64_t input_ts_offset;
 +    int rate_emu;
 +
 +    SpecifierOpt *ts_scale;
 +    int        nb_ts_scale;
 +    SpecifierOpt *dump_attachment;
 +    int        nb_dump_attachment;
 +
 +    /* output options */
 +    StreamMap *stream_maps;
 +    int     nb_stream_maps;
 +    AudioChannelMap *audio_channel_maps; /* one info entry per -map_channel */
 +    int           nb_audio_channel_maps; /* number of (valid) -map_channel settings */
 +    int metadata_global_manual;
 +    int metadata_streams_manual;
 +    int metadata_chapters_manual;
 +    const char **attachments;
 +    int       nb_attachments;
 +
 +    int chapters_input_file;
 +
 +    int64_t recording_time;
 +    uint64_t limit_filesize;
 +    float mux_preload;
 +    float mux_max_delay;
 +
 +    int video_disable;
 +    int audio_disable;
 +    int subtitle_disable;
 +    int data_disable;
 +
 +    /* indexed by output file stream index */
 +    int   *streamid_map;
 +    int nb_streamid_map;
 +
 +    SpecifierOpt *metadata;
 +    int        nb_metadata;
 +    SpecifierOpt *max_frames;
 +    int        nb_max_frames;
 +    SpecifierOpt *bitstream_filters;
 +    int        nb_bitstream_filters;
 +    SpecifierOpt *codec_tags;
 +    int        nb_codec_tags;
 +    SpecifierOpt *sample_fmts;
 +    int        nb_sample_fmts;
 +    SpecifierOpt *qscale;
 +    int        nb_qscale;
 +    SpecifierOpt *forced_key_frames;
 +    int        nb_forced_key_frames;
 +    SpecifierOpt *force_fps;
 +    int        nb_force_fps;
 +    SpecifierOpt *frame_aspect_ratios;
 +    int        nb_frame_aspect_ratios;
 +    SpecifierOpt *rc_overrides;
 +    int        nb_rc_overrides;
 +    SpecifierOpt *intra_matrices;
 +    int        nb_intra_matrices;
 +    SpecifierOpt *inter_matrices;
 +    int        nb_inter_matrices;
 +    SpecifierOpt *top_field_first;
 +    int        nb_top_field_first;
 +    SpecifierOpt *metadata_map;
 +    int        nb_metadata_map;
 +    SpecifierOpt *presets;
 +    int        nb_presets;
 +    SpecifierOpt *copy_initial_nonkeyframes;
 +    int        nb_copy_initial_nonkeyframes;
 +    SpecifierOpt *filters;
 +    int        nb_filters;
 +} OptionsContext;
 +
 +static void do_video_stats(AVFormatContext *os, OutputStream *ost, int frame_size);
 +
 +#define MATCH_PER_STREAM_OPT(name, type, outvar, fmtctx, st)\
 +{\
 +    int i, ret;\
 +    for (i = 0; i < o->nb_ ## name; i++) {\
 +        char *spec = o->name[i].specifier;\
 +        if ((ret = check_stream_specifier(fmtctx, st, spec)) > 0)\
 +            outvar = o->name[i].u.type;\
 +        else if (ret < 0)\
 +            exit_program(1);\
 +    }\
 +}
 +
 +static int64_t getutime(void)
 +{
 +#if HAVE_GETRUSAGE
 +    struct rusage rusage;
 +
 +    getrusage(RUSAGE_SELF, &rusage);
 +    return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
 +#elif HAVE_GETPROCESSTIMES
 +    HANDLE proc;
 +    FILETIME c, e, k, u;
 +    proc = GetCurrentProcess();
 +    GetProcessTimes(proc, &c, &e, &k, &u);
 +    return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
 +#else
 +    return av_gettime();
 +#endif
 +}
 +
 +static void update_benchmark(const char *fmt, ...)
 +{
 +    if (do_benchmark_all) {
 +        int64_t t = getutime();
 +        va_list va;
 +        char buf[1024];
 +
 +        if (fmt) {
 +            va_start(va, fmt);
 +            vsnprintf(buf, sizeof(buf), fmt, va);
 +            va_end(va);
 +            printf("bench: %8"PRIu64" %s \n", t - current_time, buf);
 +        }
 +        current_time = t;
 +    }
 +}
 +
 +static void reset_options(OptionsContext *o, int is_input)
 +{
 +    const OptionDef *po = options;
 +    OptionsContext bak= *o;
 +    int i;
 +
 +    /* all OPT_SPEC and OPT_STRING can be freed in generic way */
 +    while (po->name) {
 +        void *dst = (uint8_t*)o + po->u.off;
 +
 +        if (po->flags & OPT_SPEC) {
 +            SpecifierOpt **so = dst;
 +            int i, *count = (int*)(so + 1);
 +            for (i = 0; i < *count; i++) {
 +                av_freep(&(*so)[i].specifier);
 +                if (po->flags & OPT_STRING)
 +                    av_freep(&(*so)[i].u.str);
 +            }
 +            av_freep(so);
 +            *count = 0;
 +        } else if (po->flags & OPT_OFFSET && po->flags & OPT_STRING)
 +            av_freep(dst);
 +        po++;
 +    }
 +
 +    for (i = 0; i < o->nb_stream_maps; i++)
 +        av_freep(&o->stream_maps[i].linklabel);
 +    av_freep(&o->stream_maps);
 +    av_freep(&o->audio_channel_maps);
 +    av_freep(&o->streamid_map);
 +
 +    memset(o, 0, sizeof(*o));
 +
 +    if (is_input) {
 +        o->recording_time = bak.recording_time;
 +        if (o->recording_time != INT64_MAX)
 +            av_log(NULL, AV_LOG_WARNING,
 +                   "-t is not an input option, keeping it for the next output;"
 +                   " consider fixing your command line.\n");
 +    } else
 +        o->recording_time = INT64_MAX;
 +    o->mux_max_delay  = 0.7;
 +    o->limit_filesize = UINT64_MAX;
 +    o->chapters_input_file = INT_MAX;
 +
 +    uninit_opts();
 +    init_opts();
 +}
 +
 +static enum PixelFormat choose_pixel_fmt(AVStream *st, AVCodec *codec, enum PixelFormat target)
 +{
 +    if (codec && codec->pix_fmts) {
 +        const enum PixelFormat *p = codec->pix_fmts;
 +        int has_alpha= av_pix_fmt_descriptors[target].nb_components % 2 == 0;
 +        enum PixelFormat best= PIX_FMT_NONE;
 +        if (st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
 +            if (st->codec->codec_id == CODEC_ID_MJPEG) {
 +                p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE };
 +            } else if (st->codec->codec_id == CODEC_ID_LJPEG) {
 +                p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUVJ444P, PIX_FMT_YUV420P,
 +                                                 PIX_FMT_YUV422P, PIX_FMT_YUV444P, PIX_FMT_BGRA, PIX_FMT_NONE };
 +            }
 +        }
 +        for (; *p != PIX_FMT_NONE; p++) {
 +            best= avcodec_find_best_pix_fmt2(best, *p, target, has_alpha, NULL);
 +            if (*p == target)
 +                break;
 +        }
 +        if (*p == PIX_FMT_NONE) {
 +            if (target != PIX_FMT_NONE)
 +                av_log(NULL, AV_LOG_WARNING,
 +                       "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
 +                       av_pix_fmt_descriptors[target].name,
 +                       codec->name,
 +                       av_pix_fmt_descriptors[best].name);
 +            return best;
 +        }
 +    }
 +    return target;
 +}
 +
 +static char *choose_pix_fmts(OutputStream *ost)
 +{
 +     if (ost->keep_pix_fmt) {
 +        if (ost->filter)
 +            avfilter_graph_set_auto_convert(ost->filter->graph->graph,
 +                                            AVFILTER_AUTO_CONVERT_NONE);
 +        if (ost->st->codec->pix_fmt == PIX_FMT_NONE)
 +            return NULL;
 +        return av_strdup(av_get_pix_fmt_name(ost->st->codec->pix_fmt));
 +    }
 +    if (ost->st->codec->pix_fmt != PIX_FMT_NONE) {
 +        return av_strdup(av_get_pix_fmt_name(choose_pixel_fmt(ost->st, ost->enc, ost->st->codec->pix_fmt)));
 +    } else if (ost->enc && ost->enc->pix_fmts) {
 +        const enum PixelFormat *p;
 +        AVIOContext *s = NULL;
 +        uint8_t *ret;
 +        int len;
 +
 +        if (avio_open_dyn_buf(&s) < 0)
 +            exit_program(1);
 +
 +        p = ost->enc->pix_fmts;
 +        if (ost->st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
 +            if (ost->st->codec->codec_id == CODEC_ID_MJPEG) {
 +                p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE };
 +            } else if (ost->st->codec->codec_id == CODEC_ID_LJPEG) {
 +                p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUVJ444P, PIX_FMT_YUV420P,
 +                                                    PIX_FMT_YUV422P, PIX_FMT_YUV444P, PIX_FMT_BGRA, PIX_FMT_NONE };
 +            }
 +        }
 +
 +        for (; *p != PIX_FMT_NONE; p++) {
 +            const char *name = av_get_pix_fmt_name(*p);
 +            avio_printf(s, "%s:", name);
 +        }
 +        len = avio_close_dyn_buf(s, &ret);
 +        ret[len - 1] = 0;
 +        return ret;
 +    } else
 +        return NULL;
 +}
 +
 +/**
 + * Define a function for building a string containing a list of
 + * allowed formats,
 + */
 +#define DEF_CHOOSE_FORMAT(type, var, supported_list, none, get_name, separator) \
 +static char *choose_ ## var ## s(OutputStream *ost)                             \
 +{                                                                               \
 +    if (ost->st->codec->var != none) {                                          \
 +        get_name(ost->st->codec->var);                                          \
 +        return av_strdup(name);                                                 \
 +    } else if (ost->enc->supported_list) {                                      \
 +        const type *p;                                                          \
 +        AVIOContext *s = NULL;                                                  \
 +        uint8_t *ret;                                                           \
 +        int len;                                                                \
 +                                                                                \
 +        if (avio_open_dyn_buf(&s) < 0)                                          \
 +            exit_program(1);                                                    \
 +                                                                                \
 +        for (p = ost->enc->supported_list; *p != none; p++) {                   \
 +            get_name(*p);                                                       \
 +            avio_printf(s, "%s" separator, name);                               \
 +        }                                                                       \
 +        len = avio_close_dyn_buf(s, &ret);                                      \
 +        ret[len - 1] = 0;                                                       \
 +        return ret;                                                             \
 +    } else                                                                      \
 +        return NULL;                                                            \
 +}
 +
 +#define GET_PIX_FMT_NAME(pix_fmt)\
 +    const char *name = av_get_pix_fmt_name(pix_fmt);
 +
 +// DEF_CHOOSE_FORMAT(enum PixelFormat, pix_fmt, pix_fmts, PIX_FMT_NONE,
 +//                   GET_PIX_FMT_NAME, ":")
 +
 +#define GET_SAMPLE_FMT_NAME(sample_fmt)\
 +    const char *name = av_get_sample_fmt_name(sample_fmt)
 +
 +DEF_CHOOSE_FORMAT(enum AVSampleFormat, sample_fmt, sample_fmts,
 +                  AV_SAMPLE_FMT_NONE, GET_SAMPLE_FMT_NAME, ",")
 +
 +#define GET_SAMPLE_RATE_NAME(rate)\
 +    char name[16];\
 +    snprintf(name, sizeof(name), "%d", rate);
 +
 +DEF_CHOOSE_FORMAT(int, sample_rate, supported_samplerates, 0,
 +                  GET_SAMPLE_RATE_NAME, ",")
 +
 +#define GET_CH_LAYOUT_NAME(ch_layout)\
 +    char name[16];\
 +    snprintf(name, sizeof(name), "0x%"PRIx64, ch_layout);
 +
 +DEF_CHOOSE_FORMAT(uint64_t, channel_layout, channel_layouts, 0,
 +                  GET_CH_LAYOUT_NAME, ",")
 +
 +static FilterGraph *init_simple_filtergraph(InputStream *ist, OutputStream *ost)
 +{
 +    FilterGraph *fg = av_mallocz(sizeof(*fg));
 +
 +    if (!fg)
 +        exit_program(1);
 +    fg->index = nb_filtergraphs;
 +
 +    fg->outputs = grow_array(fg->outputs, sizeof(*fg->outputs), &fg->nb_outputs,
 +                             fg->nb_outputs + 1);
 +    if (!(fg->outputs[0] = av_mallocz(sizeof(*fg->outputs[0]))))
 +        exit_program(1);
 +    fg->outputs[0]->ost   = ost;
 +    fg->outputs[0]->graph = fg;
 +
 +    ost->filter = fg->outputs[0];
 +
 +    fg->inputs = grow_array(fg->inputs, sizeof(*fg->inputs), &fg->nb_inputs,
 +                            fg->nb_inputs + 1);
 +    if (!(fg->inputs[0] = av_mallocz(sizeof(*fg->inputs[0]))))
 +        exit_program(1);
 +    fg->inputs[0]->ist   = ist;
 +    fg->inputs[0]->graph = fg;
 +
 +    ist->filters = grow_array(ist->filters, sizeof(*ist->filters),
 +                              &ist->nb_filters, ist->nb_filters + 1);
 +    ist->filters[ist->nb_filters - 1] = fg->inputs[0];
 +
 +    filtergraphs = grow_array(filtergraphs, sizeof(*filtergraphs),
 +                              &nb_filtergraphs, nb_filtergraphs + 1);
 +    filtergraphs[nb_filtergraphs - 1] = fg;
 +
 +    return fg;
 +}
 +
 +static void init_input_filter(FilterGraph *fg, AVFilterInOut *in)
 +{
 +    InputStream *ist = NULL;
 +    enum AVMediaType type = avfilter_pad_get_type(in->filter_ctx->input_pads, in->pad_idx);
 +    int i;
 +
 +    // TODO: support other filter types
 +    if (type != AVMEDIA_TYPE_VIDEO && type != AVMEDIA_TYPE_AUDIO) {
 +        av_log(NULL, AV_LOG_FATAL, "Only video and audio filters supported "
 +               "currently.\n");
 +        exit_program(1);
 +    }
 +
 +    if (in->name) {
 +        AVFormatContext *s;
 +        AVStream       *st = NULL;
 +        char *p;
 +        int file_idx = strtol(in->name, &p, 0);
 +
 +        if (file_idx < 0 || file_idx >= nb_input_files) {
 +            av_log(NULL, AV_LOG_FATAL, "Invalid file index %d in filtergraph description %s.\n",
 +                   file_idx, fg->graph_desc);
 +            exit_program(1);
 +        }
 +        s = input_files[file_idx]->ctx;
 +
 +        for (i = 0; i < s->nb_streams; i++) {
 +            if (s->streams[i]->codec->codec_type != type)
 +                continue;
 +            if (check_stream_specifier(s, s->streams[i], *p == ':' ? p + 1 : p) == 1) {
 +                st = s->streams[i];
 +                break;
 +            }
 +        }
 +        if (!st) {
 +            av_log(NULL, AV_LOG_FATAL, "Stream specifier '%s' in filtergraph description %s "
 +                   "matches no streams.\n", p, fg->graph_desc);
 +            exit_program(1);
 +        }
 +        ist = input_streams[input_files[file_idx]->ist_index + st->index];
 +    } else {
 +        /* find the first unused stream of corresponding type */
 +        for (i = 0; i < nb_input_streams; i++) {
 +            ist = input_streams[i];
 +            if (ist->st->codec->codec_type == type && ist->discard)
 +                break;
 +        }
 +        if (i == nb_input_streams) {
 +            av_log(NULL, AV_LOG_FATAL, "Cannot find a matching stream for "
 +                   "unlabeled input pad %d on filter %s\n", in->pad_idx,
 +                   in->filter_ctx->name);
 +            exit_program(1);
 +        }
 +    }
 +    av_assert0(ist);
 +
 +    ist->discard         = 0;
 +    ist->decoding_needed = 1;
 +    ist->st->discard = AVDISCARD_NONE;
 +
 +    fg->inputs = grow_array(fg->inputs, sizeof(*fg->inputs),
 +                            &fg->nb_inputs, fg->nb_inputs + 1);
 +    if (!(fg->inputs[fg->nb_inputs - 1] = av_mallocz(sizeof(*fg->inputs[0]))))
 +        exit_program(1);
 +    fg->inputs[fg->nb_inputs - 1]->ist   = ist;
 +    fg->inputs[fg->nb_inputs - 1]->graph = fg;
 +
 +    ist->filters = grow_array(ist->filters, sizeof(*ist->filters),
 +                              &ist->nb_filters, ist->nb_filters + 1);
 +    ist->filters[ist->nb_filters - 1] = fg->inputs[fg->nb_inputs - 1];
 +}
 +
 +static int configure_output_video_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
 +{
 +    char *pix_fmts;
 +    OutputStream *ost = ofilter->ost;
 +    AVCodecContext *codec = ost->st->codec;
 +    AVFilterContext *last_filter = out->filter_ctx;
 +    int pad_idx = out->pad_idx;
 +    int ret;
 +    char name[255];
 +    AVBufferSinkParams *buffersink_params = av_buffersink_params_alloc();
 +
 +    snprintf(name, sizeof(name), "output stream %d:%d", ost->file_index, ost->index);
 +    ret = avfilter_graph_create_filter(&ofilter->filter,
 +                                       avfilter_get_by_name("buffersink"),
 +                                       name, NULL, NULL/*buffersink_params*/, fg->graph);
 +    av_freep(&buffersink_params);
 +
 +    if (ret < 0)
 +        return ret;
 +
 +    if (codec->width || codec->height) {
 +        char args[255];
 +        AVFilterContext *filter;
 +
 +        snprintf(args, sizeof(args), "%d:%d:flags=0x%X",
 +                 codec->width,
 +                 codec->height,
 +                 (unsigned)ost->sws_flags);
 +        snprintf(name, sizeof(name), "scaler for output stream %d:%d",
 +                 ost->file_index, ost->index);
 +        if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
 +                                                name, args, NULL, fg->graph)) < 0)
 +            return ret;
 +        if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0)
 +            return ret;
 +
 +        last_filter = filter;
 +        pad_idx = 0;
 +    }
 +
 +    if ((pix_fmts = choose_pix_fmts(ost))) {
 +        AVFilterContext *filter;
 +        snprintf(name, sizeof(name), "pixel format for output stream %d:%d",
 +                 ost->file_index, ost->index);
 +        if ((ret = avfilter_graph_create_filter(&filter,
 +                                                avfilter_get_by_name("format"),
 +                                                "format", pix_fmts, NULL,
 +                                                fg->graph)) < 0)
 +            return ret;
 +        if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0)
 +            return ret;
 +
 +        last_filter = filter;
 +        pad_idx     = 0;
 +        av_freep(&pix_fmts);
 +    }
 +
 +    if (ost->frame_rate.num && 0) {
 +        AVFilterContext *fps;
 +        char args[255];
 +
 +        snprintf(args, sizeof(args), "fps=%d/%d", ost->frame_rate.num,
 +                 ost->frame_rate.den);
 +        snprintf(name, sizeof(name), "fps for output stream %d:%d",
 +                 ost->file_index, ost->index);
 +        ret = avfilter_graph_create_filter(&fps, avfilter_get_by_name("fps"),
 +                                           name, args, NULL, fg->graph);
 +        if (ret < 0)
 +            return ret;
 +
 +        ret = avfilter_link(last_filter, pad_idx, fps, 0);
 +        if (ret < 0)
 +            return ret;
 +        last_filter = fps;
 +        pad_idx = 0;
 +    }
 +
 +    if ((ret = avfilter_link(last_filter, pad_idx, ofilter->filter, 0)) < 0)
 +        return ret;
 +
 +    return 0;
 +}
 +
 +static int configure_output_audio_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
 +{
 +    OutputStream *ost = ofilter->ost;
 +    AVCodecContext *codec  = ost->st->codec;
 +    AVFilterContext *last_filter = out->filter_ctx;
 +    int pad_idx = out->pad_idx;
 +    char *sample_fmts, *sample_rates, *channel_layouts;
 +    char name[255];
 +    int ret;
 +
 +
 +    snprintf(name, sizeof(name), "output stream %d:%d", ost->file_index, ost->index);
 +    ret = avfilter_graph_create_filter(&ofilter->filter,
 +                                       avfilter_get_by_name("abuffersink"),
 +                                       name, NULL, NULL, fg->graph);
 +    if (ret < 0)
 +        return ret;
 +
 +#define AUTO_INSERT_FILTER(opt_name, filter_name, arg) do {                 \
 +    AVFilterContext *filt_ctx;                                              \
 +                                                                            \
 +    av_log(NULL, AV_LOG_INFO, opt_name " is forwarded to lavfi "            \
 +           "similarly to -af " filter_name "=%s.\n", arg);                  \
 +                                                                            \
 +    ret = avfilter_graph_create_filter(&filt_ctx,                           \
 +                                       avfilter_get_by_name(filter_name),   \
 +                                       filter_name, arg, NULL, fg->graph);  \
 +    if (ret < 0)                                                            \
 +        return ret;                                                         \
 +                                                                            \
 +    ret = avfilter_link(last_filter, pad_idx, filt_ctx, 0);                 \
 +    if (ret < 0)                                                            \
 +        return ret;                                                         \
 +                                                                            \
 +    last_filter = filt_ctx;                                                 \
 +    pad_idx = 0;                                                            \
 +} while (0)
 +    if (ost->audio_channels_mapped) {
 +        int i;
 +        AVBPrint pan_buf;
 +        av_bprint_init(&pan_buf, 256, 8192);
 +        av_bprintf(&pan_buf, "0x%"PRIx64,
 +                   av_get_default_channel_layout(ost->audio_channels_mapped));
 +        for (i = 0; i < ost->audio_channels_mapped; i++)
 +            if (ost->audio_channels_map[i] != -1)
 +                av_bprintf(&pan_buf, ":c%d=c%d", i, ost->audio_channels_map[i]);
 +
 +        AUTO_INSERT_FILTER("-map_channel", "pan", pan_buf.str);
 +        av_bprint_finalize(&pan_buf, NULL);
 +    }
 +
 +    if (codec->channels && !codec->channel_layout)
 +        codec->channel_layout = av_get_default_channel_layout(codec->channels);
 +
 +    sample_fmts     = choose_sample_fmts(ost);
 +    sample_rates    = choose_sample_rates(ost);
 +    channel_layouts = choose_channel_layouts(ost);
 +    if (sample_fmts || sample_rates || channel_layouts) {
 +        AVFilterContext *format;
 +        char args[256];
 +        int len = 0;
 +
 +        if (sample_fmts)
 +            len += snprintf(args + len, sizeof(args) - len, "sample_fmts=%s:",
 +                            sample_fmts);
 +        if (sample_rates)
 +            len += snprintf(args + len, sizeof(args) - len, "sample_rates=%s:",
 +                            sample_rates);
 +        if (channel_layouts)
 +            len += snprintf(args + len, sizeof(args) - len, "channel_layouts=%s:",
 +                            channel_layouts);
 +        args[len - 1] = 0;
 +
 +        av_freep(&sample_fmts);
 +        av_freep(&sample_rates);
 +        av_freep(&channel_layouts);
 +
 +        snprintf(name, sizeof(name), "audio format for output stream %d:%d",
 +                 ost->file_index, ost->index);
 +        ret = avfilter_graph_create_filter(&format,
 +                                           avfilter_get_by_name("aformat"),
 +                                           name, args, NULL, fg->graph);
 +        if (ret < 0)
 +            return ret;
 +
 +        ret = avfilter_link(last_filter, pad_idx, format, 0);
 +        if (ret < 0)
 +            return ret;
 +
 +        last_filter = format;
 +        pad_idx = 0;
 +    }
 +
 +    if (audio_volume != 256 && 0) {
 +        char args[256];
 +
 +        snprintf(args, sizeof(args), "%f", audio_volume / 256.);
 +        AUTO_INSERT_FILTER("-vol", "volume", args);
 +    }
 +
 +    if ((ret = avfilter_link(last_filter, pad_idx, ofilter->filter, 0)) < 0)
 +        return ret;
 +
 +    return 0;
 +}
 +
 +#define DESCRIBE_FILTER_LINK(f, inout, in)                         \
 +{                                                                  \
 +    AVFilterContext *ctx = inout->filter_ctx;                      \
 +    AVFilterPad *pads = in ? ctx->input_pads  : ctx->output_pads;  \
 +    int       nb_pads = in ? ctx->input_count : ctx->output_count; \
 +    AVIOContext *pb;                                               \
 +                                                                   \
 +    if (avio_open_dyn_buf(&pb) < 0)                                \
 +        exit_program(1);                                           \
 +                                                                   \
 +    avio_printf(pb, "%s", ctx->filter->name);                      \
 +    if (nb_pads > 1)                                               \
 +        avio_printf(pb, ":%s", avfilter_pad_get_name(pads, inout->pad_idx));\
 +    avio_w8(pb, 0);                                                \
 +    avio_close_dyn_buf(pb, &f->name);                              \
 +}
 +
 +static int configure_output_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
 +{
 +    av_freep(&ofilter->name);
 +    DESCRIBE_FILTER_LINK(ofilter, out, 0);
 +
 +    switch (avfilter_pad_get_type(out->filter_ctx->output_pads, out->pad_idx)) {
 +    case AVMEDIA_TYPE_VIDEO: return configure_output_video_filter(fg, ofilter, out);
 +    case AVMEDIA_TYPE_AUDIO: return configure_output_audio_filter(fg, ofilter, out);
 +    default: av_assert0(0);
 +    }
 +}
 +
 +static int configure_input_video_filter(FilterGraph *fg, InputFilter *ifilter,
 +                                        AVFilterInOut *in)
 +{
 +    AVFilterContext *first_filter = in->filter_ctx;
 +    AVFilter *filter = avfilter_get_by_name("buffer");
 +    InputStream *ist = ifilter->ist;
 +    AVRational tb = ist->framerate.num ? (AVRational){ist->framerate.den,
 +                                                      ist->framerate.num} :
 +                                         ist->st->time_base;
 +    AVRational fr = ist->framerate.num ? ist->framerate :
 +                                         ist->st->r_frame_rate;
 +    AVRational sar;
 +    AVBPrint args;
 +    char name[255];
 +    int pad_idx = in->pad_idx;
 +    int ret;
 +
 +    sar = ist->st->sample_aspect_ratio.num ?
 +          ist->st->sample_aspect_ratio :
 +          ist->st->codec->sample_aspect_ratio;
 +    if(!sar.den)
 +        sar = (AVRational){0,1};
 +    av_bprint_init(&args, 0, 1);
 +    av_bprintf(&args,
 +             "video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:"
 +             "pixel_aspect=%d/%d:sws_param=flags=%d", ist->st->codec->width,
 +             ist->st->codec->height, ist->st->codec->pix_fmt,
 +             tb.num, tb.den, sar.num, sar.den,
 +             SWS_BILINEAR + ((ist->st->codec->flags&CODEC_FLAG_BITEXACT) ? SWS_BITEXACT:0));
 +    if (fr.num && fr.den)
 +        av_bprintf(&args, ":frame_rate=%d/%d", fr.num, fr.den);
 +    snprintf(name, sizeof(name), "graph %d input from stream %d:%d", fg->index,
 +             ist->file_index, ist->st->index);
 +
 +    if ((ret = avfilter_graph_create_filter(&ifilter->filter, filter, name,
 +                                            args.str, NULL, fg->graph)) < 0)
 +        return ret;
 +
 +    if (ist->framerate.num) {
 +        AVFilterContext *setpts;
 +
 +        snprintf(name, sizeof(name), "force CFR for input from stream %d:%d",
 +                 ist->file_index, ist->st->index);
 +        if ((ret = avfilter_graph_create_filter(&setpts,
 +                                                avfilter_get_by_name("setpts"),
 +                                                name, "N", NULL,
 +                                                fg->graph)) < 0)
 +            return ret;
 +
 +        if ((ret = avfilter_link(setpts, 0, first_filter, pad_idx)) < 0)
 +            return ret;
 +
 +        first_filter = setpts;
 +        pad_idx = 0;
 +    }
 +
 +    if ((ret = avfilter_link(ifilter->filter, 0, first_filter, pad_idx)) < 0)
 +        return ret;
 +    return 0;
 +}
 +
 +static int configure_input_audio_filter(FilterGraph *fg, InputFilter *ifilter,
 +                                        AVFilterInOut *in)
 +{
 +    AVFilterContext *first_filter = in->filter_ctx;
 +    AVFilter *filter = avfilter_get_by_name("abuffer");
 +    InputStream *ist = ifilter->ist;
 +    int pad_idx = in->pad_idx;
 +    char args[255], name[255];
 +    int ret;
 +
 +    snprintf(args, sizeof(args), "time_base=%d/%d:sample_rate=%d:sample_fmt=%s"
 +             ":channel_layout=0x%"PRIx64,
 +             1, ist->st->codec->sample_rate,
 +             ist->st->codec->sample_rate,
 +             av_get_sample_fmt_name(ist->st->codec->sample_fmt),
 +             ist->st->codec->channel_layout);
 +    snprintf(name, sizeof(name), "graph %d input from stream %d:%d", fg->index,
 +             ist->file_index, ist->st->index);
 +
 +    if ((ret = avfilter_graph_create_filter(&ifilter->filter, filter,
 +                                            name, args, NULL,
 +                                            fg->graph)) < 0)
 +        return ret;
 +
 +#define AUTO_INSERT_FILTER_INPUT(opt_name, filter_name, arg) do {                 \
 +    AVFilterContext *filt_ctx;                                              \
 +                                                                            \
 +    av_log(NULL, AV_LOG_INFO, opt_name " is forwarded to lavfi "            \
 +           "similarly to -af " filter_name "=%s.\n", arg);                  \
 +                                                                            \
 +    snprintf(name, sizeof(name), "graph %d %s for input stream %d:%d",      \
 +                fg->index, filter_name, ist->file_index, ist->st->index);   \
 +    ret = avfilter_graph_create_filter(&filt_ctx,                           \
 +                                       avfilter_get_by_name(filter_name),   \
 +                                       name, arg, NULL, fg->graph);         \
 +    if (ret < 0)                                                            \
 +        return ret;                                                         \
 +                                                                            \
 +    ret = avfilter_link(filt_ctx, 0, first_filter, pad_idx);                \
 +    if (ret < 0)                                                            \
 +        return ret;                                                         \
 +                                                                            \
 +    first_filter = filt_ctx;                                                  \
 +} while (0)
 +
 +    if (audio_sync_method > 0) {
 +        char args[256] = {0};
 +
 +        av_strlcatf(args, sizeof(args), "min_comp=0.001:min_hard_comp=%f", audio_drift_threshold);
 +        if (audio_sync_method > 1)
 +            av_strlcatf(args, sizeof(args), ":max_soft_comp=%f", audio_sync_method/(double)ist->st->codec->sample_rate);
 +        AUTO_INSERT_FILTER_INPUT("-async", "aresample", args);
 +    }
 +
 +//     if (ost->audio_channels_mapped) {
 +//         int i;
 +//         AVBPrint pan_buf;
 +//         av_bprint_init(&pan_buf, 256, 8192);
 +//         av_bprintf(&pan_buf, "0x%"PRIx64,
 +//                    av_get_default_channel_layout(ost->audio_channels_mapped));
 +//         for (i = 0; i < ost->audio_channels_mapped; i++)
 +//             if (ost->audio_channels_map[i] != -1)
 +//                 av_bprintf(&pan_buf, ":c%d=c%d", i, ost->audio_channels_map[i]);
 +//         AUTO_INSERT_FILTER_INPUT("-map_channel", "pan", pan_buf.str);
 +//         av_bprint_finalize(&pan_buf, NULL);
 +//     }
 +
 +    if (audio_volume != 256) {
 +        char args[256];
 +
 +        snprintf(args, sizeof(args), "%f", audio_volume / 256.);
 +        AUTO_INSERT_FILTER_INPUT("-vol", "volume", args);
 +    }
 +    if ((ret = avfilter_link(ifilter->filter, 0, first_filter, pad_idx)) < 0)
 +        return ret;
 +
 +    return 0;
 +}
 +
 +static int configure_input_filter(FilterGraph *fg, InputFilter *ifilter,
 +                                  AVFilterInOut *in)
 +{
 +    av_freep(&ifilter->name);
 +    DESCRIBE_FILTER_LINK(ifilter, in, 1);
 +
 +    switch (avfilter_pad_get_type(in->filter_ctx->input_pads, in->pad_idx)) {
 +    case AVMEDIA_TYPE_VIDEO: return configure_input_video_filter(fg, ifilter, in);
 +    case AVMEDIA_TYPE_AUDIO: return configure_input_audio_filter(fg, ifilter, in);
 +    default: av_assert0(0);
 +    }
 +}
 +
 +static int configure_filtergraph(FilterGraph *fg)
 +{
 +    AVFilterInOut *inputs, *outputs, *cur;
 +    int ret, i, init = !fg->graph, simple = !fg->graph_desc;
 +    const char *graph_desc = simple ? fg->outputs[0]->ost->avfilter :
 +                                      fg->graph_desc;
 +
 +    avfilter_graph_free(&fg->graph);
 +    if (!(fg->graph = avfilter_graph_alloc()))
 +        return AVERROR(ENOMEM);
 +
 +    if (simple) {
 +        OutputStream *ost = fg->outputs[0]->ost;
 +        char args[255];
 +        snprintf(args, sizeof(args), "flags=0x%X", (unsigned)ost->sws_flags);
 +        fg->graph->scale_sws_opts = av_strdup(args);
 +    }
 +
 +    if ((ret = avfilter_graph_parse2(fg->graph, graph_desc, &inputs, &outputs)) < 0)
 +        return ret;
 +
 +    if (simple && (!inputs || inputs->next || !outputs || outputs->next)) {
 +        av_log(NULL, AV_LOG_ERROR, "Simple filtergraph '%s' does not have "
 +               "exactly one input and output.\n", graph_desc);
 +        return AVERROR(EINVAL);
 +    }
 +
 +    for (cur = inputs; !simple && init && cur; cur = cur->next)
 +        init_input_filter(fg, cur);
 +
 +    for (cur = inputs, i = 0; cur; cur = cur->next, i++)
 +        if ((ret = configure_input_filter(fg, fg->inputs[i], cur)) < 0)
 +            return ret;
 +    avfilter_inout_free(&inputs);
 +
 +    if (!init || simple) {
 +        /* we already know the mappings between lavfi outputs and output streams,
 +         * so we can finish the setup */
 +        for (cur = outputs, i = 0; cur; cur = cur->next, i++)
 +            configure_output_filter(fg, fg->outputs[i], cur);
 +        avfilter_inout_free(&outputs);
 +
 +        if ((ret = avfilter_graph_config(fg->graph, NULL)) < 0)
 +            return ret;
 +    } else {
 +        /* wait until output mappings are processed */
 +        for (cur = outputs; cur;) {
 +            fg->outputs = grow_array(fg->outputs, sizeof(*fg->outputs),
 +                                     &fg->nb_outputs, fg->nb_outputs + 1);
 +            if (!(fg->outputs[fg->nb_outputs - 1] = av_mallocz(sizeof(*fg->outputs[0]))))
 +                exit_program(1);
 +            fg->outputs[fg->nb_outputs - 1]->graph   = fg;
 +            fg->outputs[fg->nb_outputs - 1]->out_tmp = cur;
 +            cur = cur->next;
 +            fg->outputs[fg->nb_outputs - 1]->out_tmp->next = NULL;
 +        }
 +    }
 +
 +    return 0;
 +}
 +
 +static int configure_complex_filters(void)
 +{
 +    int i, ret = 0;
 +
 +    for (i = 0; i < nb_filtergraphs; i++)
 +        if (!filtergraphs[i]->graph &&
 +            (ret = configure_filtergraph(filtergraphs[i])) < 0)
 +            return ret;
 +    return 0;
 +}
 +
 +static int ist_in_filtergraph(FilterGraph *fg, InputStream *ist)
 +{
 +    int i;
 +    for (i = 0; i < fg->nb_inputs; i++)
 +        if (fg->inputs[i]->ist == ist)
 +            return 1;
 +    return 0;
 +}
 +
 +static void term_exit(void)
 +{
 +    av_log(NULL, AV_LOG_QUIET, "%s", "");
 +#if HAVE_TERMIOS_H
 +    if(restore_tty)
 +        tcsetattr (0, TCSANOW, &oldtty);
 +#endif
 +}
 +
 +static volatile int received_sigterm = 0;
 +
 +static void sigterm_handler(int sig)
 +{
 +    received_sigterm = sig;
 +    received_nb_signals++;
 +    term_exit();
 +    if(received_nb_signals > 3)
 +        exit(123);
 +}
 +
 +static void term_init(void)
 +{
 +#if HAVE_TERMIOS_H
 +    if(!run_as_daemon){
 +        struct termios tty;
 +        int istty = 1;
 +#if HAVE_ISATTY
 +        istty = isatty(0) && isatty(2);
 +#endif
 +        if (istty && tcgetattr (0, &tty) == 0) {
 +            oldtty = tty;
 +            restore_tty = 1;
 +            atexit(term_exit);
 +
 +            tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
 +                             |INLCR|IGNCR|ICRNL|IXON);
 +            tty.c_oflag |= OPOST;
 +            tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
 +            tty.c_cflag &= ~(CSIZE|PARENB);
 +            tty.c_cflag |= CS8;
 +            tty.c_cc[VMIN] = 1;
 +            tty.c_cc[VTIME] = 0;
 +
 +            tcsetattr (0, TCSANOW, &tty);
 +        }
 +        signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
 +    }
 +#endif
 +    avformat_network_deinit();
 +
 +    signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
 +    signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
 +#ifdef SIGXCPU
 +    signal(SIGXCPU, sigterm_handler);
 +#endif
 +}
 +
 +/* read a key without blocking */
 +static int read_key(void)
 +{
 +    unsigned char ch;
 +#if HAVE_TERMIOS_H
 +    int n = 1;
 +    struct timeval tv;
 +    fd_set rfds;
 +
 +    FD_ZERO(&rfds);
 +    FD_SET(0, &rfds);
 +    tv.tv_sec = 0;
 +    tv.tv_usec = 0;
 +    n = select(1, &rfds, NULL, NULL, &tv);
 +    if (n > 0) {
 +        n = read(0, &ch, 1);
 +        if (n == 1)
 +            return ch;
 +
 +        return n;
 +    }
 +#elif HAVE_KBHIT
 +#    if HAVE_PEEKNAMEDPIPE
 +    static int is_pipe;
 +    static HANDLE input_handle;
 +    DWORD dw, nchars;
 +    if(!input_handle){
 +        input_handle = GetStdHandle(STD_INPUT_HANDLE);
 +        is_pipe = !GetConsoleMode(input_handle, &dw);
 +    }
 +
 +    if (stdin->_cnt > 0) {
 +        read(0, &ch, 1);
 +        return ch;
 +    }
 +    if (is_pipe) {
 +        /* When running under a GUI, you will end here. */
 +        if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL))
 +            return -1;
 +        //Read it
 +        if(nchars != 0) {
 +            read(0, &ch, 1);
 +            return ch;
 +        }else{
 +            return -1;
 +        }
 +    }
 +#    endif
 +    if(kbhit())
 +        return(getch());
 +#endif
 +    return -1;
 +}
 +
 +static int decode_interrupt_cb(void *ctx)
 +{
 +    return received_nb_signals > 1;
 +}
 +
 +static const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
 +
 +void av_noreturn exit_program(int ret)
 +{
 +    int i, j;
 +
 +    for (i = 0; i < nb_filtergraphs; i++) {
 +        avfilter_graph_free(&filtergraphs[i]->graph);
 +        for (j = 0; j < filtergraphs[i]->nb_inputs; j++) {
 +            av_freep(&filtergraphs[i]->inputs[j]->name);
 +            av_freep(&filtergraphs[i]->inputs[j]);
 +        }
 +        av_freep(&filtergraphs[i]->inputs);
 +        for (j = 0; j < filtergraphs[i]->nb_outputs; j++) {
 +            av_freep(&filtergraphs[i]->outputs[j]->name);
 +            av_freep(&filtergraphs[i]->outputs[j]);
 +        }
 +        av_freep(&filtergraphs[i]->outputs);
 +        av_freep(&filtergraphs[i]);
 +    }
 +    av_freep(&filtergraphs);
 +
 +    av_freep(&subtitle_out);
 +
 +    /* close files */
 +    for (i = 0; i < nb_output_files; i++) {
 +        AVFormatContext *s = output_files[i]->ctx;
 +        if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
 +            avio_close(s->pb);
 +        avformat_free_context(s);
 +        av_dict_free(&output_files[i]->opts);
 +        av_freep(&output_files[i]);
 +    }
 +    for (i = 0; i < nb_output_streams; i++) {
 +        AVBitStreamFilterContext *bsfc = output_streams[i]->bitstream_filters;
 +        while (bsfc) {
 +            AVBitStreamFilterContext *next = bsfc->next;
 +            av_bitstream_filter_close(bsfc);
 +            bsfc = next;
 +        }
 +        output_streams[i]->bitstream_filters = NULL;
 +
 +        av_freep(&output_streams[i]->forced_keyframes);
 +        av_freep(&output_streams[i]->filtered_frame);
 +        av_freep(&output_streams[i]->avfilter);
 +        av_freep(&output_streams[i]);
 +    }
 +    for (i = 0; i < nb_input_files; i++) {
 +        avformat_close_input(&input_files[i]->ctx);
 +        av_freep(&input_files[i]);
 +    }
 +    for (i = 0; i < nb_input_streams; i++) {
 +        av_freep(&input_streams[i]->decoded_frame);
 +        av_dict_free(&input_streams[i]->opts);
 +        free_buffer_pool(&input_streams[i]->buffer_pool);
 +        av_freep(&input_streams[i]->filters);
 +        av_freep(&input_streams[i]);
 +    }
 +
 +    if (vstats_file)
 +        fclose(vstats_file);
 +    av_free(vstats_filename);
 +
 +    av_freep(&input_streams);
 +    av_freep(&input_files);
 +    av_freep(&output_streams);
 +    av_freep(&output_files);
 +
 +    uninit_opts();
 +
 +    avfilter_uninit();
 +    avformat_network_deinit();
 +
 +    if (received_sigterm) {
 +        av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
 +               (int) received_sigterm);
 +        exit (255);
 +    }
 +
 +    exit(ret);
 +}
 +
 +static void assert_avoptions(AVDictionary *m)
 +{
 +    AVDictionaryEntry *t;
 +    if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
 +        av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
 +        exit_program(1);
 +    }
 +}
 +
 +static void assert_codec_experimental(AVCodecContext *c, int encoder)
 +{
 +    const char *codec_string = encoder ? "encoder" : "decoder";
 +    AVCodec *codec;
 +    if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
 +        c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
 +        av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
 +                "results.\nAdd '-strict experimental' if you want to use it.\n",
 +                codec_string, c->codec->name);
 +        codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
 +        if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
 +            av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
 +                   codec_string, codec->name);
 +        exit_program(1);
 +    }
 +}
 +
 +static void choose_sample_fmt(AVStream *st, AVCodec *codec)
 +{
 +    if (codec && codec->sample_fmts) {
 +        const enum AVSampleFormat *p = codec->sample_fmts;
 +        for (; *p != -1; p++) {
 +            if (*p == st->codec->sample_fmt)
 +                break;
 +        }
 +        if (*p == -1) {
 +            if((codec->capabilities & CODEC_CAP_LOSSLESS) && av_get_sample_fmt_name(st->codec->sample_fmt) > av_get_sample_fmt_name(codec->sample_fmts[0]))
 +                av_log(NULL, AV_LOG_ERROR, "Conversion will not be lossless.\n");
 +            if(av_get_sample_fmt_name(st->codec->sample_fmt))
 +            av_log(NULL, AV_LOG_WARNING,
 +                   "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
 +                   av_get_sample_fmt_name(st->codec->sample_fmt),
 +                   codec->name,
 +                   av_get_sample_fmt_name(codec->sample_fmts[0]));
 +            st->codec->sample_fmt = codec->sample_fmts[0];
 +        }
 +    }
 +}
 +
 +static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
 +{
 +    AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
 +    AVCodecContext          *avctx = ost->st->codec;
 +    int ret;
 +
 +    if ((avctx->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
 +        (avctx->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
 +        pkt->pts = pkt->dts = AV_NOPTS_VALUE;
 +
 +    if (avctx->codec_type == AVMEDIA_TYPE_AUDIO && pkt->dts != AV_NOPTS_VALUE) {
 +        int64_t max = ost->st->cur_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
 +        if (ost->st->cur_dts && ost->st->cur_dts != AV_NOPTS_VALUE &&  max > pkt->dts) {
 +            av_log(s, max - pkt->dts > 2 ? AV_LOG_WARNING : AV_LOG_DEBUG, "Audio timestamp %"PRId64" < %"PRId64" invalid, cliping\n", pkt->dts, max);
 +            pkt->pts = pkt->dts = max;
 +        }
 +    }
 +
 +    /*
 +     * Audio encoders may split the packets --  #frames in != #packets out.
 +     * But there is no reordering, so we can limit the number of output packets
 +     * by simply dropping them here.
 +     * Counting encoded video frames needs to be done separately because of
 +     * reordering, see do_video_out()
 +     */
 +    if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
 +        if (ost->frame_number >= ost->max_frames) {
 +            av_free_packet(pkt);
 +            return;
 +        }
 +        ost->frame_number++;
 +    }
 +
 +    while (bsfc) {
 +        AVPacket new_pkt = *pkt;
 +        int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
 +                                           &new_pkt.data, &new_pkt.size,
 +                                           pkt->data, pkt->size,
 +                                           pkt->flags & AV_PKT_FLAG_KEY);
 +        if (a > 0) {
 +            av_free_packet(pkt);
 +            new_pkt.destruct = av_destruct_packet;
 +        } else if (a < 0) {
 +            av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
 +                   bsfc->filter->name, pkt->stream_index,
 +                   avctx->codec ? avctx->codec->name : "copy");
 +            print_error("", a);
 +            if (exit_on_error)
 +                exit_program(1);
 +        }
 +        *pkt = new_pkt;
 +
 +        bsfc = bsfc->next;
 +    }
 +
 +    pkt->stream_index = ost->index;
 +    ret = av_interleaved_write_frame(s, pkt);
 +    if (ret < 0) {
 +        print_error("av_interleaved_write_frame()", ret);
 +        exit_program(1);
 +    }
 +}
 +
 +static int check_recording_time(OutputStream *ost)
 +{
 +    OutputFile *of = output_files[ost->file_index];
 +
 +    if (of->recording_time != INT64_MAX &&
 +        av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
 +                      AV_TIME_BASE_Q) >= 0) {
 +        ost->is_past_recording_time = 1;
 +        return 0;
 +    }
 +    return 1;
 +}
 +
 +static void do_audio_out(AVFormatContext *s, OutputStream *ost,
 +                         AVFrame *frame)
 +{
 +    AVCodecContext *enc = ost->st->codec;
 +    AVPacket pkt;
 +    int got_packet = 0;
 +
 +    av_init_packet(&pkt);
 +    pkt.data = NULL;
 +    pkt.size = 0;
 +
 +    if (!check_recording_time(ost))
 +        return;
 +
 +    if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
 +        frame->pts = ost->sync_opts;
 +    ost->sync_opts = frame->pts + frame->nb_samples;
 +
 +    av_assert0(pkt.size || !pkt.data);
 +    update_benchmark(NULL);
 +    if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
 +        av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
 +        exit_program(1);
 +    }
 +    update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
 +
 +    if (got_packet) {
 +        if (pkt.pts != AV_NOPTS_VALUE)
 +            pkt.pts      = av_rescale_q(pkt.pts,      enc->time_base, ost->st->time_base);
 +        if (pkt.dts != AV_NOPTS_VALUE)
 +            pkt.dts      = av_rescale_q(pkt.dts,      enc->time_base, ost->st->time_base);
 +        if (pkt.duration > 0)
 +            pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
 +
 +        if (debug_ts) {
 +            av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
 +                   "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
 +                   av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
 +                   av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
 +        }
 +
 +        write_frame(s, &pkt, ost);
 +
 +        audio_size += pkt.size;
 +        av_free_packet(&pkt);
 +    }
 +}
 +
 +static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
 +{
 +    AVCodecContext *dec;
 +    AVPicture *picture2;
 +    AVPicture picture_tmp;
 +    uint8_t *buf = 0;
 +
 +    dec = ist->st->codec;
 +
 +    /* deinterlace : must be done before any resize */
 +    if (do_deinterlace) {
 +        int size;
 +
 +        /* create temporary picture */
 +        size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
 +        buf  = av_malloc(size);
 +        if (!buf)
 +            return;
 +
 +        picture2 = &picture_tmp;
 +        avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
 +
 +        if (avpicture_deinterlace(picture2, picture,
 +                                 dec->pix_fmt, dec->width, dec->height) < 0) {
 +            /* if error, do not deinterlace */
 +            av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
 +            av_free(buf);
 +            buf = NULL;
 +            picture2 = picture;
 +        }
 +    } else {
 +        picture2 = picture;
 +    }
 +
 +    if (picture != picture2)
 +        *picture = *picture2;
 +    *bufp = buf;
 +}
 +
 +static void do_subtitle_out(AVFormatContext *s,
 +                            OutputStream *ost,
 +                            InputStream *ist,
 +                            AVSubtitle *sub,
 +                            int64_t pts)
 +{
 +    int subtitle_out_max_size = 1024 * 1024;
 +    int subtitle_out_size, nb, i;
 +    AVCodecContext *enc;
 +    AVPacket pkt;
 +
 +    if (pts == AV_NOPTS_VALUE) {
 +        av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
 +        if (exit_on_error)
 +            exit_program(1);
 +        return;
 +    }
 +
 +    enc = ost->st->codec;
 +
 +    if (!subtitle_out) {
 +        subtitle_out = av_malloc(subtitle_out_max_size);
 +    }
 +
 +    /* Note: DVB subtitle need one packet to draw them and one other
 +       packet to clear them */
 +    /* XXX: signal it in the codec context ? */
 +    if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
 +        nb = 2;
 +    else
 +        nb = 1;
 +
 +    for (i = 0; i < nb; i++) {
 +        ost->sync_opts = av_rescale_q(pts, ist->st->time_base, enc->time_base);
 +        if (!check_recording_time(ost))
 +            return;
 +
 +        sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
 +        // start_display_time is required to be 0
 +        sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
 +        sub->end_display_time  -= sub->start_display_time;
 +        sub->start_display_time = 0;
 +        subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
 +                                                    subtitle_out_max_size, sub);
 +        if (subtitle_out_size < 0) {
 +            av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
 +            exit_program(1);
 +        }
 +
 +        av_init_packet(&pkt);
 +        pkt.data = subtitle_out;
 +        pkt.size = subtitle_out_size;
 +        pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
 +        pkt.duration = av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->st->time_base);
 +        if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
 +            /* XXX: the pts correction is handled here. Maybe handling
 +               it in the codec would be better */
 +            if (i == 0)
 +                pkt.pts += 90 * sub->start_display_time;
 +            else
 +                pkt.pts += 90 * sub->end_display_time;
 +        }
 +        write_frame(s, &pkt, ost);
 +        subtitle_size += pkt.size;
 +    }
 +}
 +
 +static void do_video_out(AVFormatContext *s,
 +                         OutputStream *ost,
 +                         AVFrame *in_picture,
 +                         float quality)
 +{
 +    int ret, format_video_sync;
 +    AVPacket pkt;
 +    AVCodecContext *enc = ost->st->codec;
 +    int nb_frames, i;
 +    double sync_ipts, delta;
 +    double duration = 0;
 +    int frame_size = 0;
 +    InputStream *ist = NULL;
 +
 +    if (ost->source_index >= 0)
 +        ist = input_streams[ost->source_index];
 +
 +    if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
 +        duration = 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base));
 +
 +    sync_ipts = in_picture->pts;
 +    delta = sync_ipts - ost->sync_opts + duration;
 +
 +    /* by default, we output a single frame */
 +    nb_frames = 1;
 +
 +    format_video_sync = video_sync_method;
 +    if (format_video_sync == VSYNC_AUTO)
 +        format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : 1;
 +
 +    switch (format_video_sync) {
 +    case VSYNC_CFR:
 +        // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
 +        if (delta < -1.1)
 +            nb_frames = 0;
 +        else if (delta > 1.1)
 +            nb_frames = lrintf(delta);
 +        break;
 +    case VSYNC_VFR:
 +        if (delta <= -0.6)
 +            nb_frames = 0;
 +        else if (delta > 0.6)
 +            ost->sync_opts = lrint(sync_ipts);
 +        break;
 +    case VSYNC_DROP:
 +    case VSYNC_PASSTHROUGH:
 +        ost->sync_opts = lrint(sync_ipts);
 +        break;
 +    default:
 +        av_assert0(0);
 +    }
 +
 +    nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
 +    if (nb_frames == 0) {
 +        nb_frames_drop++;
 +        av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
 +        return;
 +    } else if (nb_frames > 1) {
 +        if (nb_frames > dts_error_threshold * 30) {
 +            av_log(NULL, AV_LOG_ERROR, "%d frame duplication too large, skiping\n", nb_frames - 1);
 +            nb_frames_drop++;
 +            return;
 +        }
 +        nb_frames_dup += nb_frames - 1;
 +        av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
 +    }
 +
 +  /* duplicates frame if needed */
 +  for (i = 0; i < nb_frames; i++) {
 +    av_init_packet(&pkt);
 +    pkt.data = NULL;
 +    pkt.size = 0;
 +
 +    in_picture->pts = ost->sync_opts;
 +
 +    if (!check_recording_time(ost))
 +        return;
 +
 +    if (s->oformat->flags & AVFMT_RAWPICTURE &&
 +        enc->codec->id == CODEC_ID_RAWVIDEO) {
 +        /* raw pictures are written as AVPicture structure to
 +           avoid any copies. We support temporarily the older
 +           method. */
 +        enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
 +        enc->coded_frame->top_field_first  = in_picture->top_field_first;
 +        pkt.data   = (uint8_t *)in_picture;
 +        pkt.size   =  sizeof(AVPicture);
 +        pkt.pts    = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
 +        pkt.flags |= AV_PKT_FLAG_KEY;
 +
 +        write_frame(s, &pkt, ost);
 +        video_size += pkt.size;
 +    } else {
 +        int got_packet;
 +        AVFrame big_picture;
 +
 +        big_picture = *in_picture;
 +        /* better than nothing: use input picture interlaced
 +           settings */
 +        big_picture.interlaced_frame = in_picture->interlaced_frame;
 +        if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
 +            if (ost->top_field_first == -1)
 +                big_picture.top_field_first = in_picture->top_field_first;
 +            else
 +                big_picture.top_field_first = !!ost->top_field_first;
 +        }
 +
 +        /* handles same_quant here. This is not correct because it may
 +           not be a global option */
 +        big_picture.quality = quality;
 +        if (!enc->me_threshold)
 +            big_picture.pict_type = 0;
 +        if (ost->forced_kf_index < ost->forced_kf_count &&
 +            big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
 +            big_picture.pict_type = AV_PICTURE_TYPE_I;
 +            ost->forced_kf_index++;
 +        }
 +        update_benchmark(NULL);
 +        ret = avcodec_encode_video2(enc, &pkt, &big_picture, &got_packet);
 +        update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
 +        if (ret < 0) {
 +            av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
 +            exit_program(1);
 +        }
 +
 +        if (got_packet) {
 +            if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
 +                pkt.pts = ost->sync_opts;
 +
 +            if (pkt.pts != AV_NOPTS_VALUE)
 +                pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
 +            if (pkt.dts != AV_NOPTS_VALUE)
 +                pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
 +
 +            if (debug_ts) {
 +                av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
 +                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
 +                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
 +                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
 +            }
 +
 +            write_frame(s, &pkt, ost);
 +            frame_size = pkt.size;
 +            video_size += pkt.size;
 +            av_free_packet(&pkt);
 +
 +            /* if two pass, output log */
 +            if (ost->logfile && enc->stats_out) {
 +                fprintf(ost->logfile, "%s", enc->stats_out);
 +            }
 +        }
 +    }
 +    ost->sync_opts++;
 +    /*
 +     * For video, number of frames in == number of packets out.
 +     * But there may be reordering, so we can't throw away frames on encoder
 +     * flush, we need to limit them here, before they go into encoder.
 +     */
 +    ost->frame_number++;
 +  }
 +
 +    if (vstats_filename && frame_size)
 +        do_video_stats(output_files[ost->file_index]->ctx, ost, frame_size);
 +}
 +
 +static double psnr(double d)
 +{
 +    return -10.0 * log(d) / log(10.0);
 +}
 +
 +static void do_video_stats(AVFormatContext *os, OutputStream *ost,
 +                           int frame_size)
 +{
 +    AVCodecContext *enc;
 +    int frame_number;
 +    double ti1, bitrate, avg_bitrate;
 +
 +    /* this is executed just the first time do_video_stats is called */
 +    if (!vstats_file) {
 +        vstats_file = fopen(vstats_filename, "w");
 +        if (!vstats_file) {
 +            perror("fopen");
 +            exit_program(1);
 +        }
 +    }
 +
 +    enc = ost->st->codec;
 +    if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
 +        frame_number = ost->frame_number;
 +        fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
 +        if (enc->flags&CODEC_FLAG_PSNR)
 +            fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
 +
 +        fprintf(vstats_file,"f_size= %6d ", frame_size);
 +        /* compute pts value */
 +        ti1 = ost->sync_opts * av_q2d(enc->time_base);
 +        if (ti1 < 0.01)
 +            ti1 = 0.01;
 +
 +        bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
 +        avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
 +        fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
 +               (double)video_size / 1024, ti1, bitrate, avg_bitrate);
 +        fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
 +    }
 +}
 +
 +/* check for new output on any of the filtergraphs */
 +static int poll_filters(void)
 +{
 +    AVFilterBufferRef *picref;
 +    AVFrame *filtered_frame = NULL;
 +    int i, ret, ret_all;
 +    unsigned nb_success = 1, av_uninit(nb_eof);
 +    int64_t frame_pts;
 +
 +    while (1) {
 +        /* Reap all buffers present in the buffer sinks */
 +        for (i = 0; i < nb_output_streams; i++) {
 +            OutputStream *ost = output_streams[i];
 +            OutputFile    *of = output_files[ost->file_index];
 +            int ret = 0;
 +
 +            if (!ost->filter)
 +                continue;
 +
 +            if (!ost->filtered_frame && !(ost->filtered_frame = avcodec_alloc_frame())) {
 +                return AVERROR(ENOMEM);
 +            } else
 +                avcodec_get_frame_defaults(ost->filtered_frame);
 +            filtered_frame = ost->filtered_frame;
 +
 +            while (1) {
 +                ret = av_buffersink_get_buffer_ref(ost->filter->filter, &picref,
 +                                                   AV_BUFFERSINK_FLAG_NO_REQUEST);
 +                if (ret < 0) {
 +                    if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
 +                        char buf[256];
 +                        av_strerror(ret, buf, sizeof(buf));
 +                        av_log(NULL, AV_LOG_WARNING,
 +                               "Error in av_buffersink_get_buffer_ref(): %s\n", buf);
 +                    }
 +                    break;
 +                }
 +                frame_pts = AV_NOPTS_VALUE;
 +                if (picref->pts != AV_NOPTS_VALUE) {
 +                    filtered_frame->pts = frame_pts = av_rescale_q(picref->pts,
 +                                                    ost->filter->filter->inputs[0]->time_base,
 +                                                    ost->st->codec->time_base) -
 +                                        av_rescale_q(of->start_time,
 +                                                    AV_TIME_BASE_Q,
 +                                                    ost->st->codec->time_base);
 +
 +                    if (of->start_time && filtered_frame->pts < 0) {
 +                        avfilter_unref_buffer(picref);
 +                        continue;
 +                    }
 +                }
 +                //if (ost->source_index >= 0)
 +                //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
 +
 +
 +                switch (ost->filter->filter->inputs[0]->type) {
 +                case AVMEDIA_TYPE_VIDEO:
 +                    avfilter_copy_buf_props(filtered_frame, picref);
 +                    filtered_frame->pts = frame_pts;
 +                    if (!ost->frame_aspect_ratio)
 +                        ost->st->codec->sample_aspect_ratio = picref->video->sample_aspect_ratio;
 +
 +                    do_video_out(of->ctx, ost, filtered_frame,
 +                                 same_quant ? ost->last_quality :
 +                                              ost->st->codec->global_quality);
 +                    break;
 +                case AVMEDIA_TYPE_AUDIO:
 +                    avfilter_copy_buf_props(filtered_frame, picref);
 +                    filtered_frame->pts = frame_pts;
 +                    do_audio_out(of->ctx, ost, filtered_frame);
 +                    break;
 +                default:
 +                    // TODO support subtitle filters
 +                    av_assert0(0);
 +                }
 +
 +                avfilter_unref_buffer(picref);
 +            }
 +        }
 +        if (!nb_success) /* from last round */
 +            break;
 +        /* Request frames through all the graphs */
 +        ret_all = nb_success = nb_eof = 0;
 +        for (i = 0; i < nb_filtergraphs; i++) {
 +            ret = avfilter_graph_request_oldest(filtergraphs[i]->graph);
 +            if (!ret) {
 +                nb_success++;
 +            } else if (ret == AVERROR_EOF) {
 +                nb_eof++;
 +            } else if (ret != AVERROR(EAGAIN)) {
 +                char buf[256];
 +                av_strerror(ret, buf, sizeof(buf));
 +                av_log(NULL, AV_LOG_WARNING,
 +                       "Error in request_frame(): %s\n", buf);
 +                ret_all = ret;
 +            }
 +        }
 +        /* Try again if anything succeeded */
 +    }
 +    return nb_eof == nb_filtergraphs ? AVERROR_EOF : ret_all;
 +}
 +
 +static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
 +{
 +    char buf[1024];
 +    AVBPrint buf_script;
 +    OutputStream *ost;
 +    AVFormatContext *oc;
 +    int64_t total_size;
 +    AVCodecContext *enc;
 +    int frame_number, vid, i;
 +    double bitrate;
 +    int64_t pts = INT64_MAX;
 +    static int64_t last_time = -1;
 +    static int qp_histogram[52];
 +    int hours, mins, secs, us;
 +
 +    if (!print_stats && !is_last_report && !progress_avio)
 +        return;
 +
 +    if (!is_last_report) {
 +        if (last_time == -1) {
 +            last_time = cur_time;
 +            return;
 +        }
 +        if ((cur_time - last_time) < 500000)
 +            return;
 +        last_time = cur_time;
 +    }
 +
 +
 +    oc = output_files[0]->ctx;
 +
 +    total_size = avio_size(oc->pb);
 +    if (total_size < 0) { // FIXME improve avio_size() so it works with non seekable output too
 +        total_size = avio_tell(oc->pb);
 +        if (total_size < 0)
 +            total_size = 0;
 +    }
 +
 +    buf[0] = '\0';
 +    vid = 0;
 +    av_bprint_init(&buf_script, 0, 1);
 +    for (i = 0; i < nb_output_streams; i++) {
 +        float q = -1;
 +        ost = output_streams[i];
 +        enc = ost->st->codec;
 +        if (!ost->stream_copy && enc->coded_frame)
 +            q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
 +        if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
 +            snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
 +            av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
 +                       ost->file_index, ost->index, q);
 +        }
 +        if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
 +            float fps, t = (cur_time-timer_start) / 1000000.0;
 +
 +            frame_number = ost->frame_number;
 +            fps = t > 1 ? frame_number / t : 0;
 +            snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
 +                     frame_number, fps < 9.95, fps, q);
 +            av_bprintf(&buf_script, "frame=%d\n", frame_number);
 +            av_bprintf(&buf_script, "fps=%.1f\n", fps);
 +            av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
 +                       ost->file_index, ost->index, q);
 +            if (is_last_report)
 +                snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
 +            if (qp_hist) {
 +                int j;
 +                int qp = lrintf(q);
 +                if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
 +                    qp_histogram[qp]++;
 +                for (j = 0; j < 32; j++)
 +                    snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j] + 1) / log(2)));
 +            }
 +            if (enc->flags&CODEC_FLAG_PSNR) {
 +                int j;
 +                double error, error_sum = 0;
 +                double scale, scale_sum = 0;
 +                double p;
 +                char type[3] = { 'Y','U','V' };
 +                snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
 +                for (j = 0; j < 3; j++) {
 +                    if (is_last_report) {
 +                        error = enc->error[j];
 +                        scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
 +                    } else {
 +                        error = enc->coded_frame->error[j];
 +                        scale = enc->width * enc->height * 255.0 * 255.0;
 +                    }
 +                    if (j)
 +                        scale /= 4;
 +                    error_sum += error;
 +                    scale_sum += scale;
 +                    p = psnr(error / scale);
 +                    snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], p);
 +                    av_bprintf(&buf_script, "stream_%d_%d_psnr_%c=%2.2f\n",
 +                               ost->file_index, ost->index, type[i] | 32, p);
 +                }
 +                p = psnr(error_sum / scale_sum);
 +                snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
 +                av_bprintf(&buf_script, "stream_%d_%d_psnr_all=%2.2f\n",
 +                           ost->file_index, ost->index, p);
 +            }
 +            vid = 1;
 +        }
 +        /* compute min output value */
 +        pts = FFMIN(pts, av_rescale_q(ost->st->pts.val,
 +                                      ost->st->time_base, AV_TIME_BASE_Q));
 +    }
 +
 +    secs = pts / AV_TIME_BASE;
 +    us = pts % AV_TIME_BASE;
 +    mins = secs / 60;
 +    secs %= 60;
 +    hours = mins / 60;
 +    mins %= 60;
 +
 +    bitrate = pts ? total_size * 8 / (pts / 1000.0) : 0;
 +
 +    snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
 +             "size=%8.0fkB time=", total_size / 1024.0);
 +    snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
 +             "%02d:%02d:%02d.%02d ", hours, mins, secs,
 +             (100 * us) / AV_TIME_BASE);
 +    snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
 +             "bitrate=%6.1fkbits/s", bitrate);
 +    av_bprintf(&buf_script, "total_size=%"PRId64"\n", total_size);
 +    av_bprintf(&buf_script, "out_time_ms=%"PRId64"\n", pts);
 +    av_bprintf(&buf_script, "out_time=%02d:%02d:%02d.%06d\n",
 +               hours, mins, secs, us);
 +
 +    if (nb_frames_dup || nb_frames_drop)
 +        snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
 +                nb_frames_dup, nb_frames_drop);
 +    av_bprintf(&buf_script, "dup_frames=%d\n", nb_frames_dup);
 +    av_bprintf(&buf_script, "drop_frames=%d\n", nb_frames_drop);
 +
 +    if (print_stats || is_last_report) {
 +    av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
 +
 +    fflush(stderr);
 +    }
 +
 +    if (progress_avio) {
 +        av_bprintf(&buf_script, "progress=%s\n",
 +                   is_last_report ? "end" : "continue");
 +        avio_write(progress_avio, buf_script.str,
 +                   FFMIN(buf_script.len, buf_script.size - 1));
 +        avio_flush(progress_avio);
 +        av_bprint_finalize(&buf_script, NULL);
 +        if (is_last_report) {
 +            avio_close(progress_avio);
 +            progress_avio = NULL;
 +        }
 +    }
 +
 +    if (is_last_report) {
 +        int64_t raw= audio_size + video_size + subtitle_size + extra_size;
 +        av_log(NULL, AV_LOG_INFO, "\n");
 +        av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB subtitle:%1.0f global headers:%1.0fkB muxing overhead %f%%\n",
 +               video_size / 1024.0,
 +               audio_size / 1024.0,
 +               subtitle_size / 1024.0,
 +               extra_size / 1024.0,
 +               100.0 * (total_size - raw) / raw
 +        );
 +        if(video_size + audio_size + subtitle_size + extra_size == 0){
 +            av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
 +        }
 +    }
 +}
 +
 +static void flush_encoders(void)
 +{
 +    int i, ret;
 +
 +    for (i = 0; i < nb_output_streams; i++) {
 +        OutputStream   *ost = output_streams[i];
 +        AVCodecContext *enc = ost->st->codec;
 +        AVFormatContext *os = output_files[ost->file_index]->ctx;
 +        int stop_encoding = 0;
 +
 +        if (!ost->encoding_needed)
 +            continue;
 +
 +        if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
 +            continue;
 +        if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == CODEC_ID_RAWVIDEO)
 +            continue;
 +
 +        for (;;) {
 +            int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
 +            const char *desc;
 +            int64_t *size;
 +
 +            switch (ost->st->codec->codec_type) {
 +            case AVMEDIA_TYPE_AUDIO:
 +                encode = avcodec_encode_audio2;
 +                desc   = "Audio";
 +                size   = &audio_size;
 +                break;
 +            case AVMEDIA_TYPE_VIDEO:
 +                encode = avcodec_encode_video2;
 +                desc   = "Video";
 +                size   = &video_size;
 +                break;
 +            default:
 +                stop_encoding = 1;
 +            }
 +
 +            if (encode) {
 +                AVPacket pkt;
 +                int got_packet;
 +                av_init_packet(&pkt);
 +                pkt.data = NULL;
 +                pkt.size = 0;
 +
 +                update_benchmark(NULL);
 +                ret = encode(enc, &pkt, NULL, &got_packet);
 +                update_benchmark("flush %s %d.%d", desc, ost->file_index, ost->index);
 +                if (ret < 0) {
 +                    av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
 +                    exit_program(1);
 +                }
 +                *size += pkt.size;
 +                if (ost->logfile && enc->stats_out) {
 +                    fprintf(ost->logfile, "%s", enc->stats_out);
 +                }
 +                if (!got_packet) {
 +                    stop_encoding = 1;
 +                    break;
 +                }
 +                if (pkt.pts != AV_NOPTS_VALUE)
 +                    pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
 +                if (pkt.dts != AV_NOPTS_VALUE)
 +                    pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
 +                write_frame(os, &pkt, ost);
 +            }
 +
 +            if (stop_encoding)
 +                break;
 +        }
 +    }
 +}
 +
 +/*
 + * Check whether a packet from ist should be written into ost at this time
 + */
 +static int check_output_constraints(InputStream *ist, OutputStream *ost)
 +{
 +    OutputFile *of = output_files[ost->file_index];
 +    int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
 +
 +    if (ost->source_index != ist_index)
 +        return 0;
 +
 +    if (of->start_time && ist->pts < of->start_time)
 +        return 0;
 +
 +    return 1;
 +}
 +
 +static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
 +{
 +    OutputFile *of = output_files[ost->file_index];
 +    int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
 +    AVPicture pict;
 +    AVPacket opkt;
 +
 +    av_init_packet(&opkt);
 +
 +    if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
 +        !ost->copy_initial_nonkeyframes)
 +        return;
 +
 +    if (of->recording_time != INT64_MAX &&
 +        ist->pts >= of->recording_time + of->start_time) {
 +        ost->is_past_recording_time = 1;
 +        return;
 +    }
 +
 +    /* force the input stream PTS */
 +    if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
 +        audio_size += pkt->size;
 +    else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
 +        video_size += pkt->size;
 +        ost->sync_opts++;
 +    } else if (ost->st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
 +        subtitle_size += pkt->size;
 +    }
 +
 +    if (pkt->pts != AV_NOPTS_VALUE)
 +        opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
 +    else
 +        opkt.pts = AV_NOPTS_VALUE;
 +
 +    if (pkt->dts == AV_NOPTS_VALUE)
 +        opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
 +    else
 +        opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
 +    opkt.dts -= ost_tb_start_time;
 +
 +    opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
 +    opkt.flags    = pkt->flags;
 +
 +    // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
 +    if (  ost->st->codec->codec_id != CODEC_ID_H264
 +       && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
 +       && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
 +       && ost->st->codec->codec_id != CODEC_ID_VC1
 +       ) {
 +        if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY))
 +            opkt.destruct = av_destruct_packet;
 +    } else {
 +        opkt.data = pkt->data;
 +        opkt.size = pkt->size;
 +    }
 +    if (of->ctx->oformat->flags & AVFMT_RAWPICTURE) {
 +        /* store AVPicture in AVPacket, as expected by the output format */
 +        avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
 +        opkt.data = (uint8_t *)&pict;
 +        opkt.size = sizeof(AVPicture);
 +        opkt.flags |= AV_PKT_FLAG_KEY;
 +    }
 +
 +    write_frame(of->ctx, &opkt, ost);
 +    ost->st->codec->frame_number++;
 +    av_free_packet(&opkt);
 +}
 +
 +static void rate_emu_sleep(InputStream *ist)
 +{
 +    if (input_files[ist->file_index]->rate_emu) {
 +        int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
 +        int64_t now = av_gettime() - ist->start;
 +        if (pts > now)
 +            av_usleep(pts - now);
 +    }
 +}
 +
 +static int guess_input_channel_layout(InputStream *ist)
 +{
 +    AVCodecContext *dec = ist->st->codec;
 +
 +    if (!dec->channel_layout) {
 +        char layout_name[256];
 +
 +        dec->channel_layout = av_get_default_channel_layout(dec->channels);
 +        if (!dec->channel_layout)
 +            return 0;
 +        av_get_channel_layout_string(layout_name, sizeof(layout_name),
 +                                     dec->channels, dec->channel_layout);
 +        av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for  Input Stream "
 +               "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
 +    }
 +    return 1;
 +}
 +
 +static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
 +{
 +    AVFrame *decoded_frame;
 +    AVCodecContext *avctx = ist->st->codec;
 +    int i, ret, resample_changed;
 +    AVRational decoded_frame_tb;
 +
 +    if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
 +        return AVERROR(ENOMEM);
 +    else
 +        avcodec_get_frame_defaults(ist->decoded_frame);
 +    decoded_frame = ist->decoded_frame;
 +
 +    update_benchmark(NULL);
 +    ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
 +    update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
 +    if (ret < 0) {
 +        return ret;
 +    }
 +    if (avctx->sample_rate <= 0) {
 +        av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
 +        return AVERROR_INVALIDDATA;
 +    }
 +
 +    if (!*got_output) {
 +        /* no audio frame */
 +        if (!pkt->size)
 +            for (i = 0; i < ist->nb_filters; i++)
 +                av_buffersrc_add_ref(ist->filters[i]->filter, NULL,
 +                                     AV_BUFFERSRC_FLAG_NO_COPY);
 +        return ret;
 +    }
 +
 +#if 1
 +    /* increment next_dts to use for the case where the input stream does not
 +       have timestamps or there are multiple frames in the packet */
 +    ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
 +                     avctx->sample_rate;
 +    ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
 +                     avctx->sample_rate;
 +#endif
 +
 +    rate_emu_sleep(ist);
 +
 +    resample_changed = ist->resample_sample_fmt     != decoded_frame->format         ||
 +                       ist->resample_channels       != avctx->channels               ||
 +                       ist->resample_channel_layout != decoded_frame->channel_layout ||
 +                       ist->resample_sample_rate    != decoded_frame->sample_rate;
 +    if (resample_changed) {
 +        char layout1[64], layout2[64];
 +
 +        if (!guess_input_channel_layout(ist)) {
 +            av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
 +                   "layout for Input Stream #%d.%d\n", ist->file_index,
 +                   ist->st->index);
 +            exit_program(1);
 +        }
 +        decoded_frame->channel_layout = avctx->channel_layout;
 +
 +        av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
 +                                     ist->resample_channel_layout);
 +        av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
 +                                     decoded_frame->channel_layout);
 +
 +        av_log(NULL, AV_LOG_INFO,
 +               "Input stream #%d:%d frame changed from rate:%d fmt:%s ch:%d chl:%s to rate:%d fmt:%s ch:%d chl:%s\n",
 +               ist->file_index, ist->st->index,
 +               ist->resample_sample_rate,  av_get_sample_fmt_name(ist->resample_sample_fmt),
 +               ist->resample_channels, layout1,
 +               decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
 +               avctx->channels, layout2);
 +
 +        ist->resample_sample_fmt     = decoded_frame->format;
 +        ist->resample_sample_rate    = decoded_frame->sample_rate;
 +        ist->resample_channel_layout = decoded_frame->channel_layout;
 +        ist->resample_channels       = avctx->channels;
 +
 +        for (i = 0; i < nb_filtergraphs; i++)
 +            if (ist_in_filtergraph(filtergraphs[i], ist)) {
 +                FilterGraph *fg = filtergraphs[i];
 +                int j;
 +                if (configure_filtergraph(fg) < 0) {
 +                    av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
 +                    exit_program(1);
 +                }
 +                for (j = 0; j < fg->nb_outputs; j++) {
 +                    OutputStream *ost = fg->outputs[j]->ost;
 +                    if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
 +                        !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
 +                        av_buffersink_set_frame_size(ost->filter->filter,
 +                                                     ost->st->codec->frame_size);
 +                }
 +            }
 +    }
 +
 +    /* if the decoder provides a pts, use it instead of the last packet pts.
 +       the decoder could be delaying output by a packet or more. */
 +    if (decoded_frame->pts != AV_NOPTS_VALUE) {
 +        ist->dts = ist->next_dts = ist->pts = ist->next_pts = av_rescale_q(decoded_frame->pts, avctx->time_base, AV_TIME_BASE_Q);
 +        decoded_frame_tb   = avctx->time_base;
 +    } else if (decoded_frame->pkt_pts != AV_NOPTS_VALUE) {
 +        decoded_frame->pts = decoded_frame->pkt_pts;
 +        pkt->pts           = AV_NOPTS_VALUE;
 +        decoded_frame_tb   = ist->st->time_base;
 +    } else if (pkt->pts != AV_NOPTS_VALUE) {
 +        decoded_frame->pts = pkt->pts;
 +        pkt->pts           = AV_NOPTS_VALUE;
 +        decoded_frame_tb   = ist->st->time_base;
 +    }else {
 +        decoded_frame->pts = ist->dts;
 +        decoded_frame_tb   = AV_TIME_BASE_Q;
 +    }
 +    if (decoded_frame->pts != AV_NOPTS_VALUE)
 +        decoded_frame->pts = av_rescale_q(decoded_frame->pts,
 +                                          decoded_frame_tb,
 +                                          (AVRational){1, ist->st->codec->sample_rate});
 +    for (i = 0; i < ist->nb_filters; i++)
 +        av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame, 0);
 +
 +    decoded_frame->pts = AV_NOPTS_VALUE;
 +
 +    return ret;
 +}
 +
 +static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
 +{
 +    AVFrame *decoded_frame;
 +    void *buffer_to_free = NULL;
 +    int i, ret = 0, resample_changed;
 +    int64_t best_effort_timestamp;
 +    AVRational *frame_sample_aspect;
 +    float quality;
 +
 +    if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
 +        return AVERROR(ENOMEM);
 +    else
 +        avcodec_get_frame_defaults(ist->decoded_frame);
 +    decoded_frame = ist->decoded_frame;
 +    pkt->dts  = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
 +
 +    update_benchmark(NULL);
 +    ret = avcodec_decode_video2(ist->st->codec,
 +                                decoded_frame, got_output, pkt);
 +    update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
 +    if (ret < 0)
 +        return ret;
 +
 +    quality = same_quant ? decoded_frame->quality : 0;
 +    if (!*got_output) {
 +        /* no picture yet */
 +        if (!pkt->size)
 +            for (i = 0; i < ist->nb_filters; i++)
 +                av_buffersrc_add_ref(ist->filters[i]->filter, NULL, AV_BUFFERSRC_FLAG_NO_COPY);
 +        return ret;
 +    }
 +
 +    if(ist->top_field_first>=0)
 +        decoded_frame->top_field_first = ist->top_field_first;
 +
 +    best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
 +    if(best_effort_timestamp != AV_NOPTS_VALUE)
 +        ist->next_pts = ist->pts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);
 +
 +    if (debug_ts) {
 +        av_log(NULL, AV_LOG_INFO, "decoder -> ist_index:%d type:video "
 +                "frame_pts:%s frame_pts_time:%s best_effort_ts:%"PRId64" best_effort_ts_time:%s keyframe:%d frame_type:%d \n",
 +                ist->st->index, av_ts2str(decoded_frame->pts),
 +                av_ts2timestr(decoded_frame->pts, &ist->st->time_base),
 +                best_effort_timestamp,
 +                av_ts2timestr(best_effort_timestamp, &ist->st->time_base),
 +                decoded_frame->key_frame, decoded_frame->pict_type);
 +    }
 +
 +    pkt->size = 0;
 +    pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
 +
 +    rate_emu_sleep(ist);
 +
 +    if (ist->st->sample_aspect_ratio.num)
 +        decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
 +
 +    resample_changed = ist->resample_width   != decoded_frame->width  ||
 +                       ist->resample_height  != decoded_frame->height ||
 +                       ist->resample_pix_fmt != decoded_frame->format;
 +    if (resample_changed) {
 +        av_log(NULL, AV_LOG_INFO,
 +               "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
 +               ist->file_index, ist->st->index,
 +               ist->resample_width,  ist->resample_height,  av_get_pix_fmt_name(ist->resample_pix_fmt),
 +               decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
 +
 +        ist->resample_width   = decoded_frame->width;
 +        ist->resample_height  = decoded_frame->height;
 +        ist->resample_pix_fmt = decoded_frame->format;
 +
 +        for (i = 0; i < nb_filtergraphs; i++)
 +            if (ist_in_filtergraph(filtergraphs[i], ist) &&
 +                configure_filtergraph(filtergraphs[i]) < 0) {
 +                av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
 +                exit_program(1);
 +            }
 +    }
 +
 +    frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
 +    for (i = 0; i < ist->nb_filters; i++) {
 +        int changed =      ist->st->codec->width   != ist->filters[i]->filter->outputs[0]->w
 +                        || ist->st->codec->height  != ist->filters[i]->filter->outputs[0]->h
 +                        || ist->st->codec->pix_fmt != ist->filters[i]->filter->outputs[0]->format;
 +        // XXX what an ugly hack
 +        if (ist->filters[i]->graph->nb_outputs == 1)
 +            ist->filters[i]->graph->outputs[0]->ost->last_quality = quality;
 +
 +        if (!frame_sample_aspect->num)
 +            *frame_sample_aspect = ist->st->sample_aspect_ratio;
 +        if (ist->dr1 && decoded_frame->type==FF_BUFFER_TYPE_USER && !changed) {
 +            FrameBuffer      *buf = decoded_frame->opaque;
 +            AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays(
 +                                        decoded_frame->data, decoded_frame->linesize,
 +                                        AV_PERM_READ | AV_PERM_PRESERVE,
 +                                        ist->st->codec->width, ist->st->codec->height,
 +                                        ist->st->codec->pix_fmt);
 +
 +            avfilter_copy_frame_props(fb, decoded_frame);
 +            fb->buf->priv           = buf;
 +            fb->buf->free           = filter_release_buffer;
 +
 +            av_assert0(buf->refcount>0);
 +            buf->refcount++;
 +            av_buffersrc_add_ref(ist->filters[i]->filter, fb,
 +                                 AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT |
 +                                 AV_BUFFERSRC_FLAG_NO_COPY);
 +        } else
 +        if(av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame, 0)<0) {
 +            av_log(NULL, AV_LOG_FATAL, "Failed to inject frame into filter network\n");
 +            exit_program(1);
 +        }
 +
 +    }
 +
 +    av_free(buffer_to_free);
 +    return ret;
 +}
 +
 +static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
 +{
 +    AVSubtitle subtitle;
 +    int i, ret = avcodec_decode_subtitle2(ist->st->codec,
 +                                          &subtitle, got_output, pkt);
 +    if (ret < 0)
 +        return ret;
 +    if (!*got_output)
 +        return ret;
 +
 +    rate_emu_sleep(ist);
 +
 +    for (i = 0; i < nb_output_streams; i++) {
 +        OutputStream *ost = output_streams[i];
 +
 +        if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
 +            continue;
 +
 +        do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle, pkt->pts);
 +    }
 +
 +    avsubtitle_free(&subtitle);
 +    return ret;
 +}
 +
 +/* pkt = NULL means EOF (needed to flush decoder buffers) */
 +static int output_packet(InputStream *ist, const AVPacket *pkt)
 +{
 +    int ret = 0, i;
 +    int got_output;
 +
 +    AVPacket avpkt;
 +    if (!ist->saw_first_ts) {
 +        ist->dts = ist->st->avg_frame_rate.num ? - ist->st->codec->has_b_frames * AV_TIME_BASE / av_q2d(ist->st->avg_frame_rate) : 0;
 +        ist->pts = 0;
 +        if (pkt != NULL && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
 +            ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
 +            ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
 +        }
 +        ist->saw_first_ts = 1;
 +    }
 +
 +    if (ist->next_dts == AV_NOPTS_VALUE)
 +        ist->next_dts = ist->dts;
 +    if (ist->next_pts == AV_NOPTS_VALUE)
 +        ist->next_pts = ist->pts;
 +
 +    if (pkt == NULL) {
 +        /* EOF handling */
 +        av_init_packet(&avpkt);
 +        avpkt.data = NULL;
 +        avpkt.size = 0;
 +        goto handle_eof;
 +    } else {
 +        avpkt = *pkt;
 +    }
 +
 +    if (pkt->dts != AV_NOPTS_VALUE) {
 +        ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
 +        if (ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
 +            ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
 +    }
 +
 +    // while we have more to decode or while the decoder did output something on EOF
 +    while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
 +        int duration;
 +    handle_eof:
 +
 +        ist->pts = ist->next_pts;
 +        ist->dts = ist->next_dts;
 +
 +        if (avpkt.size && avpkt.size != pkt->size) {
 +            av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
 +                   "Multiple frames in a packet from stream %d\n", pkt->stream_index);
 +            ist->showed_multi_packet_warning = 1;
 +        }
 +
 +        switch (ist->st->codec->codec_type) {
 +        case AVMEDIA_TYPE_AUDIO:
 +            ret = decode_audio    (ist, &avpkt, &got_output);
 +            break;
 +        case AVMEDIA_TYPE_VIDEO:
 +            ret = decode_video    (ist, &avpkt, &got_output);
 +            if (avpkt.duration) {
 +                duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
 +            } else if(ist->st->codec->time_base.num != 0 && ist->st->codec->time_base.den != 0) {
 +                int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
 +                duration = ((int64_t)AV_TIME_BASE *
 +                                ist->st->codec->time_base.num * ticks) /
 +                                ist->st->codec->time_base.den;
 +            } else
 +                duration = 0;
 +
 +            if(ist->dts != AV_NOPTS_VALUE && duration) {
 +                ist->next_dts += duration;
 +            }else
 +                ist->next_dts = AV_NOPTS_VALUE;
 +
 +            if (got_output)
 +                ist->next_pts += duration; //FIXME the duration is not correct in some cases
 +            break;
 +        case AVMEDIA_TYPE_SUBTITLE:
 +            ret = transcode_subtitles(ist, &avpkt, &got_output);
 +            break;
 +        default:
 +            return -1;
 +        }
 +
 +        if (ret < 0)
 +            return ret;
 +
 +        avpkt.dts=
 +        avpkt.pts= AV_NOPTS_VALUE;
 +
 +        // touch data and size only if not EOF
 +        if (pkt) {
 +            if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
 +                ret = avpkt.size;
 +            avpkt.data += ret;
 +            avpkt.size -= ret;
 +        }
 +        if (!got_output) {
 +            continue;
 +        }
 +    }
 +
 +    /* handle stream copy */
 +    if (!ist->decoding_needed) {
 +        rate_emu_sleep(ist);
 +        ist->dts = ist->next_dts;
 +        switch (ist->st->codec->codec_type) {
 +        case AVMEDIA_TYPE_AUDIO:
 +            ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
 +                             ist->st->codec->sample_rate;
 +            break;
 +        case AVMEDIA_TYPE_VIDEO:
 +            if (pkt->duration) {
 +                ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
 +            } else if(ist->st->codec->time_base.num != 0) {
 +                int ticks= ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
 +                ist->next_dts += ((int64_t)AV_TIME_BASE *
 +                                  ist->st->codec->time_base.num * ticks) /
 +                                  ist->st->codec->time_base.den;
 +            }
 +            break;
 +        }
 +        ist->pts = ist->dts;
 +        ist->next_pts = ist->next_dts;
 +    }
 +    for (i = 0; pkt && i < nb_output_streams; i++) {
 +        OutputStream *ost = output_streams[i];
 +
 +        if (!check_output_constraints(ist, ost) || ost->encoding_needed)
 +            continue;
 +
 +        do_streamcopy(ist, ost, pkt);
 +    }
 +
 +    return 0;
 +}
 +
 +static void print_sdp(void)
 +{
 +    char sdp[2048];
 +    int i;
 +    AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
 +
 +    if (!avc)
 +        exit_program(1);
 +    for (i = 0; i < nb_output_files; i++)
 +        avc[i] = output_files[i]->ctx;
 +
 +    av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
 +    printf("SDP:\n%s\n", sdp);
 +    fflush(stdout);
 +    av_freep(&avc);
 +}
 +
 +static int init_input_stream(int ist_index, char *error, int error_len)
 +{
 +    InputStream *ist = input_streams[ist_index];
 +
 +    if (ist->decoding_needed) {
 +        AVCodec *codec = ist->dec;
 +        if (!codec) {
 +            snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
 +                    avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
 +            return AVERROR(EINVAL);
 +        }
 +
 +        ist->dr1 = (codec->capabilities & CODEC_CAP_DR1) && !do_deinterlace;
 +        if (codec->type == AVMEDIA_TYPE_VIDEO && ist->dr1) {
 +            ist->st->codec->get_buffer     = codec_get_buffer;
 +            ist->st->codec->release_buffer = codec_release_buffer;
 +            ist->st->codec->opaque         = &ist->buffer_pool;
 +        }
 +
 +        if (!av_dict_get(ist->opts, "threads", NULL, 0))
 +            av_dict_set(&ist->opts, "threads", "auto", 0);
 +        if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
 +            snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
 +                    ist->file_index, ist->st->index);
 +            return AVERROR(EINVAL);
 +        }
 +        assert_codec_experimental(ist->st->codec, 0);
 +        assert_avoptions(ist->opts);
 +    }
 +
 +    ist->next_pts = AV_NOPTS_VALUE;
 +    ist->next_dts = AV_NOPTS_VALUE;
 +    ist->is_start = 1;
 +
 +    return 0;
 +}
 +
 +static InputStream *get_input_stream(OutputStream *ost)
 +{
 +    if (ost->source_index >= 0)
 +        return input_streams[ost->source_index];
 +    return NULL;
 +}
 +
 +static void parse_forced_key_frames(char *kf, OutputStream *ost,
 +                                    AVCodecContext *avctx)
 +{
 +    char *p;
 +    int n = 1, i;
 +    int64_t t;
 +
 +    for (p = kf; *p; p++)
 +        if (*p == ',')
 +            n++;
 +    ost->forced_kf_count = n;
 +    ost->forced_kf_pts   = av_malloc(sizeof(*ost->forced_kf_pts) * n);
 +    if (!ost->forced_kf_pts) {
 +        av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
 +        exit_program(1);
 +    }
 +
 +    p = kf;
 +    for (i = 0; i < n; i++) {
 +        char *next = strchr(p, ',');
 +
 +        if (next)
 +            *next++ = 0;
 +
 +        t = parse_time_or_die("force_key_frames", p, 1);
 +        ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
 +
 +        p = next;
 +    }
 +}
 +
 +static void report_new_stream(int input_index, AVPacket *pkt)
 +{
 +    InputFile *file = input_files[input_index];
 +    AVStream *st = file->ctx->streams[pkt->stream_index];
 +
 +    if (pkt->stream_index < file->nb_streams_warn)
 +        return;
 +    av_log(file->ctx, AV_LOG_WARNING,
 +           "New %s stream %d:%d at pos:%"PRId64" and DTS:%ss\n",
 +           av_get_media_type_string(st->codec->codec_type),
 +           input_index, pkt->stream_index,
 +           pkt->pos, av_ts2timestr(pkt->dts, &st->time_base));
 +    file->nb_streams_warn = pkt->stream_index + 1;
 +}
 +
 +static int transcode_init(void)
 +{
 +    int ret = 0, i, j, k;
 +    AVFormatContext *oc;
 +    AVCodecContext *codec, *icodec = NULL;
 +    OutputStream *ost;
 +    InputStream *ist;
 +    char error[1024];
 +    int want_sdp = 1;
 +
 +    /* init framerate emulation */
 +    for (i = 0; i < nb_input_files; i++) {
 +        InputFile *ifile = input_files[i];
 +        if (ifile->rate_emu)
 +            for (j = 0; j < ifile->nb_streams; j++)
 +                input_streams[j + ifile->ist_index]->start = av_gettime();
 +    }
 +
 +    /* output stream init */
 +    for (i = 0; i < nb_output_files; i++) {
 +        oc = output_files[i]->ctx;
 +        if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
 +            av_dump_format(oc, i, oc->filename, 1);
 +            av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
 +            return AVERROR(EINVAL);
 +        }
 +    }
 +
 +    /* init complex filtergraphs */
 +    for (i = 0; i < nb_filtergraphs; i++)
 +        if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
 +            return ret;
 +
 +    /* for each output stream, we compute the right encoding parameters */
 +    for (i = 0; i < nb_output_streams; i++) {
 +        ost = output_streams[i];
 +        oc  = output_files[ost->file_index]->ctx;
 +        ist = get_input_stream(ost);
 +
 +        if (ost->attachment_filename)
 +            continue;
 +
 +        codec  = ost->st->codec;
 +
 +        if (ist) {
 +            icodec = ist->st->codec;
 +
 +            ost->st->disposition          = ist->st->disposition;
 +            codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
 +            codec->chroma_sample_location = icodec->chroma_sample_location;
 +        }
 +
 +        if (ost->stream_copy) {
 +            uint64_t extra_size;
 +
 +            av_assert0(ist && !ost->filter);
 +
 +            extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
 +
 +            if (extra_size > INT_MAX) {
 +                return AVERROR(EINVAL);
 +            }
 +
 +            /* if stream_copy is selected, no need to decode or encode */
 +            codec->codec_id   = icodec->codec_id;
 +            codec->codec_type = icodec->codec_type;
 +
 +            if (!codec->codec_tag) {
 +                if (!oc->oformat->codec_tag ||
 +                     av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
 +                     av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
 +                    codec->codec_tag = icodec->codec_tag;
 +            }
 +
 +            codec->bit_rate       = icodec->bit_rate;
 +            codec->rc_max_rate    = icodec->rc_max_rate;
 +            codec->rc_buffer_size = icodec->rc_buffer_size;
 +            codec->field_order    = icodec->field_order;
 +            codec->extradata      = av_mallocz(extra_size);
 +            if (!codec->extradata) {
 +                return AVERROR(ENOMEM);
 +            }
 +            memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
 +            codec->extradata_size= icodec->extradata_size;
 +            codec->bits_per_coded_sample  = icodec->bits_per_coded_sample;
 +
 +            codec->time_base = ist->st->time_base;
 +            /*
 +             * Avi is a special case here because it supports variable fps but
 +             * having the fps and timebase differe significantly adds quite some
 +             * overhead
 +             */
 +            if(!strcmp(oc->oformat->name, "avi")) {
 +                if ( copy_tb<0 && av_q2d(ist->st->r_frame_rate) >= av_q2d(ist->st->avg_frame_rate)
 +                               && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(ist->st->time_base)
 +                               && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(icodec->time_base)
 +                               && av_q2d(ist->st->time_base) < 1.0/500 && av_q2d(icodec->time_base) < 1.0/500
 +                     || copy_tb==2){
 +                    codec->time_base.num = ist->st->r_frame_rate.den;
 +                    codec->time_base.den = 2*ist->st->r_frame_rate.num;
 +                    codec->ticks_per_frame = 2;
 +                } else if (   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base)
 +                                 && av_q2d(ist->st->time_base) < 1.0/500
 +                    || copy_tb==0){
 +                    codec->time_base = icodec->time_base;
 +                    codec->time_base.num *= icodec->ticks_per_frame;
 +                    codec->time_base.den *= 2;
 +                    codec->ticks_per_frame = 2;
 +                }
 +            } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
 +                      && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
 +                      && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
 +            ) {
 +                if(   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
 +                                && av_q2d(ist->st->time_base) < 1.0/500
 +                   || copy_tb==0){
 +                    codec->time_base = icodec->time_base;
 +                    codec->time_base.num *= icodec->ticks_per_frame;
 +                }
 +            }
 +
 +            if(ost->frame_rate.num)
 +                codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
 +
 +            av_reduce(&codec->time_base.num, &codec->time_base.den,
 +                        codec->time_base.num, codec->time_base.den, INT_MAX);
 +
 +            switch (codec->codec_type) {
 +            case AVMEDIA_TYPE_AUDIO:
 +                if (audio_volume != 256) {
 +                    av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
 +                    exit_program(1);
 +                }
 +                codec->channel_layout     = icodec->channel_layout;
 +                codec->sample_rate        = icodec->sample_rate;
 +                codec->channels           = icodec->channels;
 +                codec->frame_size         = icodec->frame_size;
 +                codec->audio_service_type = icodec->audio_service_type;
 +                codec->block_align        = icodec->block_align;
 +                if((codec->block_align == 1 || codec->block_align == 1152) && codec->codec_id == CODEC_ID_MP3)
 +                    codec->block_align= 0;
 +                if(codec->codec_id == CODEC_ID_AC3)
 +                    codec->block_align= 0;
 +                break;
 +            case AVMEDIA_TYPE_VIDEO:
 +                codec->pix_fmt            = icodec->pix_fmt;
 +                codec->width              = icodec->width;
 +                codec->height             = icodec->height;
 +                codec->has_b_frames       = icodec->has_b_frames;
 +                if (!codec->sample_aspect_ratio.num) {
 +                    codec->sample_aspect_ratio   =
 +                    ost->st->sample_aspect_ratio =
 +                        ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
 +                        ist->st->codec->sample_aspect_ratio.num ?
 +                        ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
 +                }
 +                ost->st->avg_frame_rate = ist->st->avg_frame_rate;
 +                break;
 +            case AVMEDIA_TYPE_SUBTITLE:
 +                codec->width  = icodec->width;
 +                codec->height = icodec->height;
 +                break;
 +            case AVMEDIA_TYPE_DATA:
 +            case AVMEDIA_TYPE_ATTACHMENT:
 +                break;
 +            default:
 +                abort();
 +            }
 +        } else {
 +            if (!ost->enc)
 +                ost->enc = avcodec_find_encoder(codec->codec_id);
 +            if (!ost->enc) {
 +                /* should only happen when a default codec is not present. */
 +                snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
 +                         avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
 +                ret = AVERROR(EINVAL);
 +                goto dump_format;
 +            }
 +
 +            if (ist)
 +                ist->decoding_needed = 1;
 +            ost->encoding_needed = 1;
 +
 +            if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
 +                if (ost->filter && !ost->frame_rate.num)
 +                    ost->frame_rate = av_buffersink_get_frame_rate(ost->filter->filter);
 +                if (ist && !ost->frame_rate.num)
 +                    ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25, 1};
 +                if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
 +                    int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
 +                    ost->frame_rate = ost->enc->supported_framerates[idx];
 +                }
 +            }
 +
 +            if (!ost->filter &&
 +                (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
 +                 codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
 +                    FilterGraph *fg;
 +                    fg = init_simple_filtergraph(ist, ost);
 +                    if (configure_filtergraph(fg)) {
 +                        av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
 +                        exit(1);
 +                    }
 +            }
 +
 +            switch (codec->codec_type) {
 +            case AVMEDIA_TYPE_AUDIO:
 +                codec->sample_fmt     = ost->filter->filter->inputs[0]->format;
 +                codec->sample_rate    = ost->filter->filter->inputs[0]->sample_rate;
 +                codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
 +                codec->channels       = av_get_channel_layout_nb_channels(codec->channel_layout);
 +                codec->time_base      = (AVRational){ 1, codec->sample_rate };
 +                break;
 +            case AVMEDIA_TYPE_VIDEO:
 +                codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
 +                if (ost->filter && !(codec->time_base.num && codec->time_base.den))
 +                    codec->time_base = ost->filter->filter->inputs[0]->time_base;
 +                if (   av_q2d(codec->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
 +                   && (video_sync_method == VSYNC_CFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
 +                    av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
 +                                               "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
 +                }
 +                for (j = 0; j < ost->forced_kf_count; j++)
 +                    ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
 +                                                         AV_TIME_BASE_Q,
 +                                                         codec->time_base);
 +
 +                codec->width  = ost->filter->filter->inputs[0]->w;
 +                codec->height = ost->filter->filter->inputs[0]->h;
 +                codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
 +                    ost->frame_aspect_ratio ? // overridden by the -aspect cli option
 +                    av_d2q(ost->frame_aspect_ratio * codec->height/codec->width, 255) :
 +                    ost->filter->filter->inputs[0]->sample_aspect_ratio;
 +                codec->pix_fmt = ost->filter->filter->inputs[0]->format;
 +
 +                if (!icodec ||
 +                    codec->width   != icodec->width  ||
 +                    codec->height  != icodec->height ||
 +                    codec->pix_fmt != icodec->pix_fmt) {
 +                    codec->bits_per_raw_sample = frame_bits_per_raw_sample;
 +                }
 +
 +                if (ost->forced_keyframes)
 +                    parse_forced_key_frames(ost->forced_keyframes, ost,
 +                                            ost->st->codec);
 +                break;
 +            case AVMEDIA_TYPE_SUBTITLE:
 +                codec->time_base = (AVRational){1, 1000};
 +                break;
 +            default:
 +                abort();
 +                break;
 +            }
 +            /* two pass mode */
 +            if (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
 +                char logfilename[1024];
 +                FILE *f;
 +
 +                snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
 +                         pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
 +                         i);
 +                if (!strcmp(ost->enc->name, "libx264")) {
 +                    av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
 +                } else {
 +                    if (codec->flags & CODEC_FLAG_PASS2) {
 +                        char  *logbuffer;
 +                        size_t logbuffer_size;
 +                        if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
 +                            av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
 +                                   logfilename);
 +                            exit_program(1);
 +                        }
 +                        codec->stats_in = logbuffer;
 +                    }
 +                    if (codec->flags & CODEC_FLAG_PASS1) {
 +                        f = fopen(logfilename, "wb");
 +                        if (!f) {
 +                            av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
 +                                logfilename, strerror(errno));
 +                            exit_program(1);
 +                        }
 +                        ost->logfile = f;
 +                    }
 +                }
 +            }
 +        }
 +    }
 +
 +    /* open each encoder */
 +    for (i = 0; i < nb_output_streams; i++) {
 +        ost = output_streams[i];
 +        if (ost->encoding_needed) {
 +            AVCodec      *codec = ost->enc;
 +            AVCodecContext *dec = NULL;
 +
 +            if ((ist = get_input_stream(ost)))
 +                dec = ist->st->codec;
 +            if (dec && dec->subtitle_header) {
 +                ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
 +                if (!ost->st->codec->subtitle_header) {
 +                    ret = AVERROR(ENOMEM);
 +                    goto dump_format;
 +                }
 +                memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
 +                ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
 +            }
 +            if (!av_dict_get(ost->opts, "threads", NULL, 0))
 +                av_dict_set(&ost->opts, "threads", "auto", 0);
 +            if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
 +                snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
 +                        ost->file_index, ost->index);
 +                ret = AVERROR(EINVAL);
 +                goto dump_format;
 +            }
 +            if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
 +                !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
 +                av_buffersink_set_frame_size(ost->filter->filter,
 +                                             ost->st->codec->frame_size);
 +            assert_codec_experimental(ost->st->codec, 1);
 +            assert_avoptions(ost->opts);
 +            if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
 +                av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
 +                                             " It takes bits/s as argument, not kbits/s\n");
 +            extra_size += ost->st->codec->extradata_size;
 +
 +            if (ost->st->codec->me_threshold)
 +                input_streams[ost->source_index]->st->codec->debug |= FF_DEBUG_MV;
 +        }
 +    }
 +
 +    /* init input streams */
 +    for (i = 0; i < nb_input_streams; i++)
 +        if ((ret = init_input_stream(i, error, sizeof(error))) < 0)
 +            goto dump_format;
 +
 +    /* discard unused programs */
 +    for (i = 0; i < nb_input_files; i++) {
 +        InputFile *ifile = input_files[i];
 +        for (j = 0; j < ifile->ctx->nb_programs; j++) {
 +            AVProgram *p = ifile->ctx->programs[j];
 +            int discard  = AVDISCARD_ALL;
 +
 +            for (k = 0; k < p->nb_stream_indexes; k++)
 +                if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
 +                    discard = AVDISCARD_DEFAULT;
 +                    break;
 +                }
 +            p->discard = discard;
 +        }
 +    }
 +
 +    /* open files and write file headers */
 +    for (i = 0; i < nb_output_files; i++) {
 +        oc = output_files[i]->ctx;
 +        oc->interrupt_callback = int_cb;
 +        if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
 +            char errbuf[128];
 +            const char *errbuf_ptr = errbuf;
 +            if (av_strerror(ret, errbuf, sizeof(errbuf)) < 0)
 +                errbuf_ptr = strerror(AVUNERROR(ret));
 +            snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?): %s", i, errbuf_ptr);
 +            ret = AVERROR(EINVAL);
 +            goto dump_format;
 +        }
 +//         assert_avoptions(output_files[i]->opts);
 +        if (strcmp(oc->oformat->name, "rtp")) {
 +            want_sdp = 0;
 +        }
 +    }
 +
 + dump_format:
 +    /* dump the file output parameters - cannot be done before in case
 +       of stream copy */
 +    for (i = 0; i < nb_output_files; i++) {
 +        av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
 +    }
 +
 +    /* dump the stream mapping */
 +    av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
 +    for (i = 0; i < nb_input_streams; i++) {
 +        ist = input_streams[i];
 +
 +        for (j = 0; j < ist->nb_filters; j++) {
 +            if (ist->filters[j]->graph->graph_desc) {
 +                av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
 +                       ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
 +                       ist->filters[j]->name);
 +                if (nb_filtergraphs > 1)
 +                    av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
 +                av_log(NULL, AV_LOG_INFO, "\n");
 +            }
 +        }
 +    }
 +
 +    for (i = 0; i < nb_output_streams; i++) {
 +        ost = output_streams[i];
 +
 +        if (ost->attachment_filename) {
 +            /* an attached file */
 +            av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
 +                   ost->attachment_filename, ost->file_index, ost->index);
 +            continue;
 +        }
 +
 +        if (ost->filter && ost->filter->graph->graph_desc) {
 +            /* output from a complex graph */
 +            av_log(NULL, AV_LOG_INFO, "  %s", ost->filter->name);
 +            if (nb_filtergraphs > 1)
 +                av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
 +
 +            av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
 +                   ost->index, ost->enc ? ost->enc->name : "?");
 +            continue;
 +        }
 +
 +        av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
 +               input_streams[ost->source_index]->file_index,
 +               input_streams[ost->source_index]->st->index,
 +               ost->file_index,
 +               ost->index);
 +        if (ost->sync_ist != input_streams[ost->source_index])
 +            av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
 +                   ost->sync_ist->file_index,
 +                   ost->sync_ist->st->index);
 +        if (ost->stream_copy)
 +            av_log(NULL, AV_LOG_INFO, " (copy)");
 +        else
 +            av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
 +                   input_streams[ost->source_index]->dec->name : "?",
 +                   ost->enc ? ost->enc->name : "?");
 +        av_log(NULL, AV_LOG_INFO, "\n");
 +    }
 +
 +    if (ret) {
 +        av_log(NULL, AV_LOG_ERROR, "%s\n", error);
 +        return ret;
 +    }
 +
 +    if (want_sdp) {
 +        print_sdp();
 +    }
 +
 +    return 0;
 +}
 +
 +/**
 + * @return 1 if there are still streams where more output is wanted,
 + *         0 otherwise
 + */
 +static int need_output(void)
 +{
 +    int i;
 +
 +    for (i = 0; i < nb_output_streams; i++) {
 +        OutputStream *ost    = output_streams[i];
 +        OutputFile *of       = output_files[ost->file_index];
 +        AVFormatContext *os  = output_files[ost->file_index]->ctx;
 +
 +        if (ost->is_past_recording_time ||
 +            (os->pb && avio_tell(os->pb) >= of->limit_filesize))
 +            continue;
 +        if (ost->frame_number >= ost->max_frames) {
 +            int j;
 +            for (j = 0; j < of->ctx->nb_streams; j++)
 +                output_streams[of->ost_index + j]->is_past_recording_time = 1;
 +            continue;
 +        }
 +
 +        return 1;
 +    }
 +
 +    return 0;
 +}
 +
 +static int input_acceptable(InputStream *ist)
 +{
 +    av_assert1(!ist->discard);
 +    return !input_files[ist->file_index]->unavailable &&
 +           !input_files[ist->file_index]->eof_reached;
 +}
 +
 +static int find_graph_input(FilterGraph *graph)
 +{
 +    int i, nb_req_max = 0, file_index = -1;
 +
 +    for (i = 0; i < graph->nb_inputs; i++) {
 +        int nb_req = av_buffersrc_get_nb_failed_requests(graph->inputs[i]->filter);
 +        if (nb_req > nb_req_max) {
 +            InputStream *ist = graph->inputs[i]->ist;
 +            if (input_acceptable(ist)) {
 +                nb_req_max = nb_req;
 +                file_index = ist->file_index;
 +            }
 +        }
 +    }
 +
 +    return file_index;
 +}
 +
 +/**
 + * Select the input file to read from.
 + *
 + * @return  >=0 index of the input file to use;
 + *          -1  if no file is acceptable;
 + *          -2  to read from filters without reading from a file
 + */
 +static int select_input_file(void)
 +{
 +    int i, ret, nb_active_out = nb_output_streams, ost_index = -1;
 +    int64_t opts_min;
 +    OutputStream *ost;
 +    AVFilterBufferRef *dummy;
 +
 +    for (i = 0; i < nb_output_streams; i++)
 +        nb_active_out -= output_streams[i]->unavailable =
 +            output_streams[i]->is_past_recording_time;
 +    while (nb_active_out) {
 +        opts_min = INT64_MAX;
 +        ost_index = -1;
 +        for (i = 0; i < nb_output_streams; i++) {
 +            OutputStream *ost = output_streams[i];
 +            int64_t opts = av_rescale_q(ost->st->cur_dts, ost->st->time_base,
 +                                        AV_TIME_BASE_Q);
 +            if (!ost->unavailable && opts < opts_min) {
 +                opts_min  = opts;
 +                ost_index = i;
 +            }
 +        }
 +        if (ost_index < 0)
 +            return -1;
 +
 +        ost = output_streams[ost_index];
 +        if (ost->source_index >= 0) {
 +            /* ost is directly connected to an input */
 +            InputStream *ist = input_streams[ost->source_index];
 +            if (input_acceptable(ist))
 +                return ist->file_index;
 +        } else {
 +            /* ost is connected to a complex filtergraph */
 +            av_assert1(ost->filter);
 +            ret = av_buffersink_get_buffer_ref(ost->filter->filter, &dummy,
 +                                               AV_BUFFERSINK_FLAG_PEEK);
 +            if (ret >= 0)
 +                return -2;
 +            ret = find_graph_input(ost->filter->graph);
 +            if (ret >= 0)
 +                return ret;
 +        }
 +        ost->unavailable = 1;
 +        nb_active_out--;
 +    }
 +    return -1;
 +}
 +
 +static int check_keyboard_interaction(int64_t cur_time)
 +{
 +    int i, ret, key;
 +    static int64_t last_time;
 +    if (received_nb_signals)
 +        return AVERROR_EXIT;
 +    /* read_key() returns 0 on EOF */
 +    if(cur_time - last_time >= 100000 && !run_as_daemon){
 +        key =  read_key();
 +        last_time = cur_time;
 +    }else
 +        key = -1;
 +    if (key == 'q')
 +        return AVERROR_EXIT;
 +    if (key == '+') av_log_set_level(av_log_get_level()+10);
 +    if (key == '-') av_log_set_level(av_log_get_level()-10);
 +    if (key == 's') qp_hist     ^= 1;
 +    if (key == 'h'){
 +        if (do_hex_dump){
 +            do_hex_dump = do_pkt_dump = 0;
 +        } else if(do_pkt_dump){
 +            do_hex_dump = 1;
 +        } else
 +            do_pkt_dump = 1;
 +        av_log_set_level(AV_LOG_DEBUG);
 +    }
 +    if (key == 'c' || key == 'C'){
 +        char buf[4096], target[64], command[256], arg[256] = {0};
 +        double time;
 +        int k, n = 0;
 +        fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
 +        i = 0;
 +        while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
 +            if (k > 0)
 +                buf[i++] = k;
 +        buf[i] = 0;
 +        if (k > 0 &&
 +            (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
 +            av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
 +                   target, time, command, arg);
 +            for (i = 0; i < nb_filtergraphs; i++) {
 +                FilterGraph *fg = filtergraphs[i];
 +                if (fg->graph) {
 +                    if (time < 0) {
 +                        ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
 +                                                          key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
 +                        fprintf(stderr, "Command reply for stream %d: ret:%d res:%s\n", i, ret, buf);
 +                    } else {
 +                        ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
 +                    }
 +                }
 +            }
 +        } else {
 +            av_log(NULL, AV_LOG_ERROR,
 +                   "Parse error, at least 3 arguments were expected, "
 +                   "only %d given in string '%s'\n", n, buf);
 +        }
 +    }
 +    if (key == 'd' || key == 'D'){
 +        int debug=0;
 +        if(key == 'D') {
 +            debug = input_streams[0]->st->codec->debug<<1;
 +            if(!debug) debug = 1;
 +            while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
 +                debug += debug;
 +        }else
 +            if(scanf("%d", &debug)!=1)
 +                fprintf(stderr,"error parsing debug value\n");
 +        for(i=0;i<nb_input_streams;i++) {
 +            input_streams[i]->st->codec->debug = debug;
 +        }
 +        for(i=0;i<nb_output_streams;i++) {
 +            OutputStream *ost = output_streams[i];
 +            ost->st->codec->debug = debug;
 +        }
 +        if(debug) av_log_set_level(AV_LOG_DEBUG);
 +        fprintf(stderr,"debug=%d\n", debug);
 +    }
 +    if (key == '?'){
 +        fprintf(stderr, "key    function\n"
 +                        "?      show this help\n"
 +                        "+      increase verbosity\n"
 +                        "-      decrease verbosity\n"
 +                        "c      Send command to filtergraph\n"
 +                        "D      cycle through available debug modes\n"
 +                        "h      dump packets/hex press to cycle through the 3 states\n"
 +                        "q      quit\n"
 +                        "s      Show QP histogram\n"
 +        );
 +    }
 +    return 0;
 +}
 +
 +#if HAVE_PTHREADS
 +static void *input_thread(void *arg)
 +{
 +    InputFile *f = arg;
 +    int ret = 0;
 +
 +    while (!transcoding_finished && ret >= 0) {
 +        AVPacket pkt;
 +        ret = av_read_frame(f->ctx, &pkt);
 +
 +        if (ret == AVERROR(EAGAIN)) {
 +            av_usleep(10000);
 +            ret = 0;
 +            continue;
 +        } else if (ret < 0)
 +            break;
 +
 +        pthread_mutex_lock(&f->fifo_lock);
 +        while (!av_fifo_space(f->fifo))
 +            pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
 +
 +        av_dup_packet(&pkt);
 +        av_fifo_generic_write(f->fifo, &pkt, sizeof(pkt), NULL);
 +
 +        pthread_mutex_unlock(&f->fifo_lock);
 +    }
 +
 +    f->finished = 1;
 +    return NULL;
 +}
 +
 +static void free_input_threads(void)
 +{
 +    int i;
 +
 +    if (nb_input_files == 1)
 +        return;
 +
 +    transcoding_finished = 1;
 +
 +    for (i = 0; i < nb_input_files; i++) {
 +        InputFile *f = input_files[i];
 +        AVPacket pkt;
 +
 +        if (!f->fifo || f->joined)
 +            continue;
 +
 +        pthread_mutex_lock(&f->fifo_lock);
 +        while (av_fifo_size(f->fifo)) {
 +            av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
 +            av_free_packet(&pkt);
 +        }
 +        pthread_cond_signal(&f->fifo_cond);
 +        pthread_mutex_unlock(&f->fifo_lock);
 +
 +        pthread_join(f->thread, NULL);
 +        f->joined = 1;
 +
 +        while (av_fifo_size(f->fifo)) {
 +            av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
 +            av_free_packet(&pkt);
 +        }
 +        av_fifo_free(f->fifo);
 +    }
 +}
 +
 +static int init_input_threads(void)
 +{
 +    int i, ret;
 +
 +    if (nb_input_files == 1)
 +        return 0;
 +
 +    for (i = 0; i < nb_input_files; i++) {
 +        InputFile *f = input_files[i];
 +
 +        if (!(f->fifo = av_fifo_alloc(8*sizeof(AVPacket))))
 +            return AVERROR(ENOMEM);
 +
 +        pthread_mutex_init(&f->fifo_lock, NULL);
 +        pthread_cond_init (&f->fifo_cond, NULL);
 +
 +        if ((ret = pthread_create(&f->thread, NULL, input_thread, f)))
 +            return AVERROR(ret);
 +    }
 +    return 0;
 +}
 +
 +static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
 +{
 +    int ret = 0;
 +
 +    pthread_mutex_lock(&f->fifo_lock);
 +
 +    if (av_fifo_size(f->fifo)) {
 +        av_fifo_generic_read(f->fifo, pkt, sizeof(*pkt), NULL);
 +        pthread_cond_signal(&f->fifo_cond);
 +    } else {
 +        if (f->finished)
 +            ret = AVERROR_EOF;
 +        else
 +            ret = AVERROR(EAGAIN);
 +    }
 +
 +    pthread_mutex_unlock(&f->fifo_lock);
 +
 +    return ret;
 +}
 +#endif
 +
 +static int get_input_packet(InputFile *f, AVPacket *pkt)
 +{
 +#if HAVE_PTHREADS
 +    if (nb_input_files > 1)
 +        return get_input_packet_mt(f, pkt);
 +#endif
 +    return av_read_frame(f->ctx, pkt);
 +}
 +
 +/*
 + * The following code is the main loop of the file converter
 + */
 +static int transcode(void)
 +{
 +    int ret, i;
 +    AVFormatContext *is, *os;
 +    OutputStream *ost;
 +    InputStream *ist;
 +    int no_packet_count = 0;
 +    int64_t timer_start;
 +
 +    ret = transcode_init();
 +    if (ret < 0)
 +        goto fail;
 +
 +    if (stdin_interaction) {
 +        av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
 +    }
 +
 +    timer_start = av_gettime();
 +
 +#if HAVE_PTHREADS
 +    if ((ret = init_input_threads()) < 0)
 +        goto fail;
 +#endif
 +
 +    for (; received_sigterm == 0;) {
 +        int file_index, ist_index;
 +        AVPacket pkt;
 +        int64_t cur_time= av_gettime();
 +
 +        /* if 'q' pressed, exits */
 +        if (stdin_interaction)
 +            if (check_keyboard_interaction(cur_time) < 0)
 +                break;
 +
 +        /* check if there's any stream where output is still needed */
 +        if (!need_output()) {
 +            av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
 +            break;
 +        }
 +
 +        /* select the stream that we must read now */
 +        file_index = select_input_file();
 +        /* if none, if is finished */
 +        if (file_index == -2) {
 +            poll_filters() ;
 +            continue;
 +        }
 +        if (file_index < 0) {
 +            if (no_packet_count) {
 +                no_packet_count = 0;
 +                for (i = 0; i < nb_input_files; i++)
 +                    input_files[i]->unavailable = 0;
 +                av_usleep(10000);
 +                continue;
 +            }
 +            av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from, finishing.\n");
 +            break;
 +        }
 +
 +        is  = input_files[file_index]->ctx;
 +        ret = get_input_packet(input_files[file_index], &pkt);
 +
 +        if (ret == AVERROR(EAGAIN)) {
 +            input_files[file_index]->unavailable = 1;
 +            no_packet_count++;
 +            continue;
 +        }
 +        if (ret < 0) {
 +            if (ret != AVERROR_EOF) {
 +                print_error(is->filename, ret);
 +                if (exit_on_error)
 +                    exit_program(1);
 +            }
 +            input_files[file_index]->eof_reached = 1;
 +
 +            for (i = 0; i < input_files[file_index]->nb_streams; i++) {
 +                ist = input_streams[input_files[file_index]->ist_index + i];
 +                if (ist->decoding_needed)
 +                    output_packet(ist, NULL);
 +                poll_filters();
 +            }
 +
 +            if (opt_shortest)
 +                break;
 +            else
 +                continue;
 +        }
 +
 +        no_packet_count = 0;
 +        for (i = 0; i < nb_input_files; i++)
 +            input_files[i]->unavailable = 0;
 +
 +        if (do_pkt_dump) {
 +            av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
 +                             is->streams[pkt.stream_index]);
 +        }
 +        /* the following test is needed in case new streams appear
 +           dynamically in stream : we ignore them */
 +        if (pkt.stream_index >= input_files[file_index]->nb_streams) {
 +            report_new_stream(file_index, &pkt);
 +            goto discard_packet;
 +        }
 +        ist_index = input_files[file_index]->ist_index + pkt.stream_index;
 +        ist = input_streams[ist_index];
 +        if (ist->discard)
 +            goto discard_packet;
 +
 +        if(!ist->wrap_correction_done && input_files[file_index]->ctx->start_time != AV_NOPTS_VALUE && ist->st->pts_wrap_bits < 64){
 +            uint64_t stime = av_rescale_q(input_files[file_index]->ctx->start_time, AV_TIME_BASE_Q, ist->st->time_base);
 +            uint64_t stime2= stime + (1LL<<ist->st->pts_wrap_bits);
 +            ist->wrap_correction_done = 1;
 +            if(pkt.dts != AV_NOPTS_VALUE && pkt.dts > stime && pkt.dts - stime > stime2 - pkt.dts) {
 +                pkt.dts -= 1LL<<ist->st->pts_wrap_bits;
 +                ist->wrap_correction_done = 0;
 +            }
 +            if(pkt.pts != AV_NOPTS_VALUE && pkt.pts > stime && pkt.pts - stime > stime2 - pkt.pts) {
 +                pkt.pts -= 1LL<<ist->st->pts_wrap_bits;
 +                ist->wrap_correction_done = 0;
 +            }
 +        }
 +
 +        if (pkt.dts != AV_NOPTS_VALUE)
 +            pkt.dts += av_rescale_q(input_files[ist->file_index]->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
 +        if (pkt.pts != AV_NOPTS_VALUE)
 +            pkt.pts += av_rescale_q(input_files[ist->file_index]->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
 +
 +        if (pkt.pts != AV_NOPTS_VALUE)
 +            pkt.pts *= ist->ts_scale;
 +        if (pkt.dts != AV_NOPTS_VALUE)
 +            pkt.dts *= ist->ts_scale;
 +
 +        if (debug_ts) {
 +            av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
 +                    "next_dts:%s next_dts_time:%s next_pts:%s next_pts_time:%s  pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s off:%"PRId64"\n",
 +                    ist_index, av_get_media_type_string(ist->st->codec->codec_type),
 +                    av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &AV_TIME_BASE_Q),
 +                    av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &AV_TIME_BASE_Q),
 +                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
 +                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
 +                    input_files[ist->file_index]->ts_offset);
 +        }
 +
 +        if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE && !copy_ts) {
 +            int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
 +            int64_t delta   = pkt_dts - ist->next_dts;
 +            if (is->iformat->flags & AVFMT_TS_DISCONT) {
 +            if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
 +                (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
 +                 ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
 +                pkt_dts+1<ist->pts){
 +                input_files[ist->file_index]->ts_offset -= delta;
 +                av_log(NULL, AV_LOG_DEBUG,
 +                       "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
 +                       delta, input_files[ist->file_index]->ts_offset);
 +                pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
 +                if (pkt.pts != AV_NOPTS_VALUE)
 +                    pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
 +            }
 +            } else {
 +                if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
 +                    (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
 +                     pkt_dts+1<ist->pts){
 +                    av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
 +                    pkt.dts = AV_NOPTS_VALUE;
 +                }
 +                if (pkt.pts != AV_NOPTS_VALUE){
 +                    int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
 +                    delta   = pkt_pts - ist->next_dts;
 +                    if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
 +                        (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
 +                        pkt_pts+1<ist->pts) {
 +                        av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
 +                        pkt.pts = AV_NOPTS_VALUE;
 +                    }
 +                }
 +            }
 +        }
 +
 +        // fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
 +        if ((ret = output_packet(ist, &pkt)) < 0 ||
 +            ((ret = poll_filters()) < 0 && ret != AVERROR_EOF)) {
 +            char buf[128];
 +            av_strerror(ret, buf, sizeof(buf));
 +            av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d: %s\n",
 +                   ist->file_index, ist->st->index, buf);
 +            if (exit_on_error)
 +                exit_program(1);
 +            av_free_packet(&pkt);
 +            continue;
 +        }
 +
 +    discard_packet:
 +        av_free_packet(&pkt);
 +
 +        /* dump report by using the output first video and audio streams */
 +        print_report(0, timer_start, cur_time);
 +    }
 +#if HAVE_PTHREADS
 +    free_input_threads();
 +#endif
 +
 +    /* at the end of stream, we must flush the decoder buffers */
 +    for (i = 0; i < nb_input_streams; i++) {
 +        ist = input_streams[i];
 +        if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
 +            output_packet(ist, NULL);
 +        }
 +    }
 +    poll_filters();
 +    flush_encoders();
 +
 +    term_exit();
 +
 +    /* write the trailer if needed and close file */
 +    for (i = 0; i < nb_output_files; i++) {
 +        os = output_files[i]->ctx;
 +        av_write_trailer(os);
 +    }
 +
 +    /* dump report by using the first video and audio streams */
 +    print_report(1, timer_start, av_gettime());
 +
 +    /* close each encoder */
 +    for (i = 0; i < nb_output_streams; i++) {
 +        ost = output_streams[i];
 +        if (ost->encoding_needed) {
 +            av_freep(&ost->st->codec->stats_in);
 +            avcodec_close(ost->st->codec);
 +        }
 +    }
 +
 +    /* close each decoder */
 +    for (i = 0; i < nb_input_streams; i++) {
 +        ist = input_streams[i];
 +        if (ist->decoding_needed) {
 +            avcodec_close(ist->st->codec);
 +        }
 +    }
 +
 +    /* finished ! */
 +    ret = 0;
 +
 + fail:
 +#if HAVE_PTHREADS
 +    free_input_threads();
 +#endif
 +
 +    if (output_streams) {
 +        for (i = 0; i < nb_output_streams; i++) {
 +            ost = output_streams[i];
 +            if (ost) {
 +                if (ost->stream_copy)
 +                    av_freep(&ost->st->codec->extradata);
 +                if (ost->logfile) {
 +                    fclose(ost->logfile);
 +                    ost->logfile = NULL;
 +                }
 +                av_freep(&ost->st->codec->subtitle_header);
 +                av_free(ost->forced_kf_pts);
 +                av_dict_free(&ost->opts);
 +            }
 +        }
 +    }
 +    return ret;
 +}
 +
 +static int opt_frame_crop(const char *opt, const char *arg)
 +{
 +    av_log(NULL, AV_LOG_FATAL, "Option '%s' has been removed, use the crop filter instead\n", opt);
 +    return AVERROR(EINVAL);
 +}
 +
 +static int opt_pad(const char *opt, const char *arg)
 +{
 +    av_log(NULL, AV_LOG_FATAL, "Option '%s' has been removed, use the pad filter instead\n", opt);
 +    return -1;
 +}
 +
 +static int opt_video_channel(const char *opt, const char *arg)
 +{
 +    av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -channel.\n");
 +    return opt_default("channel", arg);
 +}
 +
 +static int opt_video_standard(const char *opt, const char *arg)
 +{
 +    av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -standard.\n");
 +    return opt_default("standard", arg);
 +}
 +
 +static int opt_audio_codec(OptionsContext *o, const char *opt, const char *arg)
 +{
 +    audio_codec_name = arg;
 +    return parse_option(o, "codec:a", arg, options);
 +}
 +
 +static int opt_video_codec(OptionsContext *o, const char *opt, const char *arg)
 +{
 +    video_codec_name = arg;
 +    return parse_option(o, "codec:v", arg, options);
 +}
 +
 +static int opt_subtitle_codec(OptionsContext *o, const char *opt, const char *arg)
 +{
 +    subtitle_codec_name = arg;
 +    return parse_option(o, "codec:s", arg, options);
 +}
 +
 +static int opt_data_codec(OptionsContext *o, const char *opt, const char *arg)
 +{
 +    return parse_option(o, "codec:d", arg, options);
 +}
 +
 +static int opt_map(OptionsContext *o, const char *opt, const char *arg)
 +{
 +    StreamMap *m = NULL;
 +    int i, negative = 0, file_idx;
 +    int sync_file_idx = -1, sync_stream_idx = 0;
 +    char *p, *sync;
 +    char *map;
 +
 +    if (*arg == '-') {
 +        negative = 1;
 +        arg++;
 +    }
 +    map = av_strdup(arg);
 +
 +    /* parse sync stream first, just pick first matching stream */
 +    if (sync = strchr(map, ',')) {
 +        *sync = 0;
 +        sync_file_idx = strtol(sync + 1, &sync, 0);
 +        if (sync_file_idx >= nb_input_files || sync_file_idx < 0) {
 +            av_log(NULL, AV_LOG_FATAL, "Invalid sync file index: %d.\n", sync_file_idx);
 +            exit_program(1);
 +        }
 +        if (*sync)
 +            sync++;
 +        for (i = 0; i < input_files[sync_file_idx]->nb_streams; i++)
 +            if (check_stream_specifier(input_files[sync_file_idx]->ctx,
 +                                       input_files[sync_file_idx]->ctx->streams[i], sync) == 1) {
 +                sync_stream_idx = i;
 +                break;
 +            }
 +        if (i == input_files[sync_file_idx]->nb_streams) {
 +            av_log(NULL, AV_LOG_FATAL, "Sync stream specification in map %s does not "
 +                                       "match any streams.\n", arg);
 +            exit_program(1);
 +        }
 +    }
 +
 +
 +    if (map[0] == '[') {
 +        /* this mapping refers to lavfi output */
 +        const char *c = map + 1;
 +        o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
 +                                    &o->nb_stream_maps, o->nb_stream_maps + 1);
 +        m = &o->stream_maps[o->nb_stream_maps - 1];
 +        m->linklabel = av_get_token(&c, "]");
 +        if (!m->linklabel) {
 +            av_log(NULL, AV_LOG_ERROR, "Invalid output link label: %s.\n", map);
 +            exit_program(1);
 +        }
 +    } else {
 +        file_idx = strtol(map, &p, 0);
 +        if (file_idx >= nb_input_files || file_idx < 0) {
 +            av_log(NULL, AV_LOG_FATAL, "Invalid input file index: %d.\n", file_idx);
 +            exit_program(1);
 +        }
 +        if (negative)
 +            /* disable some already defined maps */
 +            for (i = 0; i < o->nb_stream_maps; i++) {
 +                m = &o->stream_maps[i];
 +                if (file_idx == m->file_index &&
 +                    check_stream_specifier(input_files[m->file_index]->ctx,
 +                                           input_files[m->file_index]->ctx->streams[m->stream_index],
 +                                           *p == ':' ? p + 1 : p) > 0)
 +                    m->disabled = 1;
 +            }
 +        else
 +            for (i = 0; i < input_files[file_idx]->nb_streams; i++) {
 +                if (check_stream_specifier(input_files[file_idx]->ctx, input_files[file_idx]->ctx->streams[i],
 +                            *p == ':' ? p + 1 : p) <= 0)
 +                    continue;
 +                o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
 +                                            &o->nb_stream_maps, o->nb_stream_maps + 1);
 +                m = &o->stream_maps[o->nb_stream_maps - 1];
 +
 +                m->file_index   = file_idx;
 +                m->stream_index = i;
 +
 +                if (sync_file_idx >= 0) {
 +                    m->sync_file_index   = sync_file_idx;
 +                    m->sync_stream_index = sync_stream_idx;
 +                } else {
 +                    m->sync_file_index   = file_idx;
 +                    m->sync_stream_index = i;
 +                }
 +            }
 +    }
 +
 +    if (!m) {
 +        av_log(NULL, AV_LOG_FATAL, "Stream map '%s' matches no streams.\n", arg);
 +        exit_program(1);
 +    }
 +
 +    av_freep(&map);
 +    return 0;
 +}
 +
 +static int opt_attach(OptionsContext *o, const char *opt, const char *arg)
 +{
 +    o->attachments = grow_array(o->attachments, sizeof(*o->attachments),
 +                                &o->nb_attachments, o->nb_attachments + 1);
 +    o->attachments[o->nb_attachments - 1] = arg;
 +    return 0;
 +}
 +
 +static int opt_map_channel(OptionsContext *o, const char *opt, const char *arg)
 +{
 +    int n;
 +    AVStream *st;
 +    AudioChannelMap *m;
 +
 +    o->audio_channel_maps =
 +        grow_array(o->audio_channel_maps, sizeof(*o->audio_channel_maps),
 +                   &o->nb_audio_channel_maps, o->nb_audio_channel_maps + 1);
 +    m = &o->audio_channel_maps[o->nb_audio_channel_maps - 1];
 +
 +    /* muted channel syntax */
 +    n = sscanf(arg, "%d:%d.%d", &m->channel_idx, &m->ofile_idx, &m->ostream_idx);
 +    if ((n == 1 || n == 3) && m->channel_idx == -1) {
 +        m->file_idx = m->stream_idx = -1;
 +        if (n == 1)
 +            m->ofile_idx = m->ostream_idx = -1;
 +        return 0;
 +    }
 +
 +    /* normal syntax */
 +    n = sscanf(arg, "%d.%d.%d:%d.%d",
 +               &m->file_idx,  &m->stream_idx, &m->channel_idx,
 +               &m->ofile_idx, &m->ostream_idx);
 +
 +    if (n != 3 && n != 5) {
 +        av_log(NULL, AV_LOG_FATAL, "Syntax error, mapchan usage: "
 +               "[file.stream.channel|-1][:syncfile:syncstream]\n");
 +        exit_program(1);
 +    }
 +
 +    if (n != 5) // only file.stream.channel specified
 +        m->ofile_idx = m->ostream_idx = -1;
 +
 +    /* check input */
 +    if (m->file_idx < 0 || m->file_idx >= nb_input_files) {
 +        av_log(NULL, AV_LOG_FATAL, "mapchan: invalid input file index: %d\n",
 +               m->file_idx);
 +        exit_program(1);
 +    }
 +    if (m->stream_idx < 0 ||
 +        m->stream_idx >= input_files[m->file_idx]->nb_streams) {
 +        av_log(NULL, AV_LOG_FATAL, "mapchan: invalid input file stream index #%d.%d\n",
 +               m->file_idx, m->stream_idx);
 +        exit_program(1);
 +    }
 +    st = input_files[m->file_idx]->ctx->streams[m->stream_idx];
 +    if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO) {
 +        av_log(NULL, AV_LOG_FATAL, "mapchan: stream #%d.%d is not an audio stream.\n",
 +               m->file_idx, m->stream_idx);
 +        exit_program(1);
 +    }
 +    if (m->channel_idx < 0 || m->channel_idx >= st->codec->channels) {
 +        av_log(NULL, AV_LOG_FATAL, "mapchan: invalid audio channel #%d.%d.%d\n",
 +               m->file_idx, m->stream_idx, m->channel_idx);
 +        exit_program(1);
 +    }
 +    return 0;
 +}
 +
 +/**
 + * Parse a metadata specifier in arg.
 + * @param type metadata type is written here -- g(lobal)/s(tream)/c(hapter)/p(rogram)
 + * @param index for type c/p, chapter/program index is written here
 + * @param stream_spec for type s, the stream specifier is written here
 + */
 +static void parse_meta_type(char *arg, char *type, int *index, const char **stream_spec)
 +{
 +    if (*arg) {
 +        *type = *arg;
 +        switch (*arg) {
 +        case 'g':
 +            break;
 +        case 's':
 +            if (*(++arg) && *arg != ':') {
 +                av_log(NULL, AV_LOG_FATAL, "Invalid metadata specifier %s.\n", arg);
 +                exit_program(1);
 +            }
 +            *stream_spec = *arg == ':' ? arg + 1 : "";
 +            break;
 +        case 'c':
 +        case 'p':
 +            if (*(++arg) == ':')
 +                *index = strtol(++arg, NULL, 0);
 +            break;
 +        default:
 +            av_log(NULL, AV_LOG_FATAL, "Invalid metadata type %c.\n", *arg);
 +            exit_program(1);
 +        }
 +    } else
 +        *type = 'g';
 +}
 +
 +static int copy_metadata(char *outspec, char *inspec, AVFormatContext *oc, AVFormatContext *ic, OptionsContext *o)
 +{
 +    AVDictionary **meta_in = NULL;
 +    AVDictionary **meta_out = NULL;
 +    int i, ret = 0;
 +    char type_in, type_out;
 +    const char *istream_spec = NULL, *ostream_spec = NULL;
 +    int idx_in = 0, idx_out = 0;
 +
 +    parse_meta_type(inspec,  &type_in,  &idx_in,  &istream_spec);
 +    parse_meta_type(outspec, &type_out, &idx_out, &ostream_spec);
 +
 +    if (!ic) {
 +        if (type_out == 'g' || !*outspec)
 +            o->metadata_global_manual = 1;
 +        if (type_out == 's' || !*outspec)
 +            o->metadata_streams_manual = 1;
 +        if (type_out == 'c' || !*outspec)
 +            o->metadata_chapters_manual = 1;
 +        return 0;
 +    }
 +
 +    if (type_in == 'g' || type_out == 'g')
 +        o->metadata_global_manual = 1;
 +    if (type_in == 's' || type_out == 's')
 +        o->metadata_streams_manual = 1;
 +    if (type_in == 'c' || type_out == 'c')
 +        o->metadata_chapters_manual = 1;
 +
 +#define METADATA_CHECK_INDEX(index, nb_elems, desc)\
 +    if ((index) < 0 || (index) >= (nb_elems)) {\
 +        av_log(NULL, AV_LOG_FATAL, "Invalid %s index %d while processing metadata maps.\n",\
 +                (desc), (index));\
 +        exit_program(1);\
 +    }
 +
 +#define SET_DICT(type, meta, context, index)\
 +        switch (type) {\
 +        case 'g':\
 +            meta = &context->metadata;\
 +            break;\
 +        case 'c':\
 +            METADATA_CHECK_INDEX(index, context->nb_chapters, "chapter")\
 +            meta = &context->chapters[index]->metadata;\
 +            break;\
 +        case 'p':\
 +            METADATA_CHECK_INDEX(index, context->nb_programs, "program")\
 +            meta = &context->programs[index]->metadata;\
 +            break;\
 +        default: av_assert0(0);\
 +        }\
 +
 +    SET_DICT(type_in, meta_in, ic, idx_in);
 +    SET_DICT(type_out, meta_out, oc, idx_out);
 +
 +    /* for input streams choose first matching stream */
 +    if (type_in == 's') {
 +        for (i = 0; i < ic->nb_streams; i++) {
 +            if ((ret = check_stream_specifier(ic, ic->streams[i], istream_spec)) > 0) {
 +                meta_in = &ic->streams[i]->metadata;
 +                break;
 +            } else if (ret < 0)
 +                exit_program(1);
 +        }
 +        if (!meta_in) {
 +            av_log(NULL, AV_LOG_FATAL, "Stream specifier %s does not match  any streams.\n", istream_spec);
 +            exit_program(1);
 +        }
 +    }
 +
 +    if (type_out == 's') {
 +        for (i = 0; i < oc->nb_streams; i++) {
 +            if ((ret = check_stream_specifier(oc, oc->streams[i], ostream_spec)) > 0) {
 +                meta_out = &oc->streams[i]->metadata;
 +                av_dict_copy(meta_out, *meta_in, AV_DICT_DONT_OVERWRITE);
 +            } else if (ret < 0)
 +                exit_program(1);
 +        }
 +    } else
 +        av_dict_copy(meta_out, *meta_in, AV_DICT_DONT_OVERWRITE);
 +
 +    return 0;
 +}
 +
 +static int opt_recording_timestamp(OptionsContext *o, const char *opt, const char *arg)
 +{
 +    char buf[128];
 +    int64_t recording_timestamp = parse_time_or_die(opt, arg, 0) / 1E6;
 +    struct tm time = *gmtime((time_t*)&recording_timestamp);
 +    strftime(buf, sizeof(buf), "creation_time=%FT%T%z", &time);
 +    parse_option(o, "metadata", buf, options);
 +
 +    av_log(NULL, AV_LOG_WARNING, "%s is deprecated, set the 'creation_time' metadata "
 +                                 "tag instead.\n", opt);
 +    return 0;
 +}
 +
 +static AVCodec *find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
 +{
 +    const char *codec_string = encoder ? "encoder" : "decoder";
 +    AVCodec *codec;
 +
 +    codec = encoder ?
 +        avcodec_find_encoder_by_name(name) :
 +        avcodec_find_decoder_by_name(name);
 +    if (!codec) {
 +        av_log(NULL, AV_LOG_FATAL, "Unknown %s '%s'\n", codec_string, name);
 +        exit_program(1);
 +    }
 +    if (codec->type != type) {
 +        av_log(NULL, AV_LOG_FATAL, "Invalid %s type '%s'\n", codec_string, name);
 +        exit_program(1);
 +    }
 +    return codec;
 +}
 +
 +static AVCodec *choose_decoder(OptionsContext *o, AVFormatContext *s, AVStream *st)
 +{
 +    char *codec_name = NULL;
 +
 +    MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, st);
 +    if (codec_name) {
 +        AVCodec *codec = find_codec_or_die(codec_name, st->codec->codec_type, 0);
 +        st->codec->codec_id = codec->id;
 +        return codec;
 +    } else
 +        return avcodec_find_decoder(st->codec->codec_id);
 +}
 +
 +/**
 + * Add all the streams from the given input file to the global
 + * list of input streams.
 + */
 +static void add_input_streams(OptionsContext *o, AVFormatContext *ic)
 +{
 +    int i;
 +    char *next, *codec_tag = NULL;
 +
 +    for (i = 0; i < ic->nb_streams; i++) {
 +        AVStream *st = ic->streams[i];
 +        AVCodecContext *dec = st->codec;
 +        InputStream *ist = av_mallocz(sizeof(*ist));
 +        char *framerate = NULL;
 +
 +        if (!ist)
 +            exit_program(1);
 +
 +        input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
 +        input_streams[nb_input_streams - 1] = ist;
 +
 +        ist->st = st;
 +        ist->file_index = nb_input_files;
 +        ist->discard = 1;
 +        st->discard  = AVDISCARD_ALL;
 +        ist->opts = filter_codec_opts(codec_opts, ist->st->codec->codec_id, ic, st, choose_decoder(o, ic, st));
 +
 +        ist->ts_scale = 1.0;
 +        MATCH_PER_STREAM_OPT(ts_scale, dbl, ist->ts_scale, ic, st);
 +
 +        MATCH_PER_STREAM_OPT(codec_tags, str, codec_tag, ic, st);
 +        if (codec_tag) {
 +            uint32_t tag = strtol(codec_tag, &next, 0);
 +            if (*next)
 +                tag = AV_RL32(codec_tag);
 +            st->codec->codec_tag = tag;
 +        }
 +
 +        ist->dec = choose_decoder(o, ic, st);
 +
 +        switch (dec->codec_type) {
 +        case AVMEDIA_TYPE_VIDEO:
 +            if(!ist->dec)
 +                ist->dec = avcodec_find_decoder(dec->codec_id);
 +            if (dec->lowres) {
 +                dec->flags |= CODEC_FLAG_EMU_EDGE;
 +            }
 +
 +            ist->resample_height  = dec->height;
 +            ist->resample_width   = dec->width;
 +            ist->resample_pix_fmt = dec->pix_fmt;
 +
 +            MATCH_PER_STREAM_OPT(frame_rates, str, framerate, ic, st);
 +            if (framerate && av_parse_video_rate(&ist->framerate,
 +                                                 framerate) < 0) {
 +                av_log(NULL, AV_LOG_ERROR, "Error parsing framerate %s.\n",
 +                       framerate);
 +                exit_program(1);
 +            }
 +
 +            ist->top_field_first = -1;
 +            MATCH_PER_STREAM_OPT(top_field_first, i, ist->top_field_first, ic, st);
 +
 +            break;
 +        case AVMEDIA_TYPE_AUDIO:
 +            guess_input_channel_layout(ist);
 +
 +            ist->resample_sample_fmt     = dec->sample_fmt;
 +            ist->resample_sample_rate    = dec->sample_rate;
 +            ist->resample_channels       = dec->channels;
 +            ist->resample_channel_layout = dec->channel_layout;
 +
 +            break;
 +        case AVMEDIA_TYPE_DATA:
 +        case AVMEDIA_TYPE_SUBTITLE:
 +            if(!ist->dec)
 +                ist->dec = avcodec_find_decoder(dec->codec_id);
 +            break;
 +        case AVMEDIA_TYPE_ATTACHMENT:
 +        case AVMEDIA_TYPE_UNKNOWN:
 +            break;
 +        default:
 +            abort();
 +        }
 +    }
 +}
 +
 +static void assert_file_overwrite(const char *filename)
 +{
 +    if ((!file_overwrite || no_file_overwrite) &&
 +        (strchr(filename, ':') == NULL || filename[1] == ':' ||
 +         av_strstart(filename, "file:", NULL))) {
 +        if (avio_check(filename, 0) == 0) {
 +            if (stdin_interaction && (!no_file_overwrite || file_overwrite)) {
 +                fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
 +                fflush(stderr);
 +                term_exit();
 +                signal(SIGINT, SIG_DFL);
 +                if (!read_yesno()) {
 +                    av_log(NULL, AV_LOG_FATAL, "Not overwriting - exiting\n");
 +                    exit_program(1);
 +                }
 +                term_init();
 +            }
 +            else {
 +                av_log(NULL, AV_LOG_FATAL, "File '%s' already exists. Exiting.\n", filename);
 +                exit_program(1);
 +            }
 +        }
 +    }
 +}
 +
 +static void dump_attachment(AVStream *st, const char *filename)
 +{
 +    int ret;
 +    AVIOContext *out = NULL;
 +    AVDictionaryEntry *e;
 +
 +    if (!st->codec->extradata_size) {
 +        av_log(NULL, AV_LOG_WARNING, "No extradata to dump in stream #%d:%d.\n",
 +               nb_input_files - 1, st->index);
 +        return;
 +    }
 +    if (!*filename && (e = av_dict_get(st->metadata, "filename", NULL, 0)))
 +        filename = e->value;
 +    if (!*filename) {
 +        av_log(NULL, AV_LOG_FATAL, "No filename specified and no 'filename' tag"
 +               "in stream #%d:%d.\n", nb_input_files - 1, st->index);
 +        exit_program(1);
 +    }
 +
 +    assert_file_overwrite(filename);
 +
 +    if ((ret = avio_open2(&out, filename, AVIO_FLAG_WRITE, &int_cb, NULL)) < 0) {
 +        av_log(NULL, AV_LOG_FATAL, "Could not open file %s for writing.\n",
 +               filename);
 +        exit_program(1);
 +    }
 +
 +    avio_write(out, st->codec->extradata, st->codec->extradata_size);
 +    avio_flush(out);
 +    avio_close(out);
 +}
 +
 +static int opt_input_file(OptionsContext *o, const char *opt, const char *filename)
 +{
 +    AVFormatContext *ic;
 +    AVInputFormat *file_iformat = NULL;
 +    int err, i, ret;
 +    int64_t timestamp;
 +    uint8_t buf[128];
 +    AVDictionary **opts;
 +    int orig_nb_streams;                     // number of streams before avformat_find_stream_info
 +
 +    if (o->format) {
 +        if (!(file_iformat = av_find_input_format(o->format))) {
 +            av_log(NULL, AV_LOG_FATAL, "Unknown input format: '%s'\n", o->format);
 +            exit_program(1);
 +        }
 +    }
 +
 +    if (!strcmp(filename, "-"))
 +        filename = "pipe:";
 +
 +    stdin_interaction &= strncmp(filename, "pipe:", 5) &&
 +                         strcmp(filename, "/dev/stdin");
 +
 +    /* get default parameters from command line */
 +    ic = avformat_alloc_context();
 +    if (!ic) {
 +        print_error(filename, AVERROR(ENOMEM));
 +        exit_program(1);
 +    }
 +    if (o->nb_audio_sample_rate) {
 +        snprintf(buf, sizeof(buf), "%d", o->audio_sample_rate[o->nb_audio_sample_rate - 1].u.i);
 +        av_dict_set(&format_opts, "sample_rate", buf, 0);
 +    }
 +    if (o->nb_audio_channels) {
 +        /* because we set audio_channels based on both the "ac" and
 +         * "channel_layout" options, we need to check that the specified
 +         * demuxer actually has the "channels" option before setting it */
 +        if (file_iformat && file_iformat->priv_class &&
 +            av_opt_find(&file_iformat->priv_class, "channels", NULL, 0,
 +                        AV_OPT_SEARCH_FAKE_OBJ)) {
 +            snprintf(buf, sizeof(buf), "%d",
 +                     o->audio_channels[o->nb_audio_channels - 1].u.i);
 +            av_dict_set(&format_opts, "channels", buf, 0);
 +        }
 +    }
 +    if (o->nb_frame_rates) {
 +        /* set the format-level framerate option;
 +         * this is important for video grabbers, e.g. x11 */
 +        if (file_iformat && file_iformat->priv_class &&
 +            av_opt_find(&file_iformat->priv_class, "framerate", NULL, 0,
 +                        AV_OPT_SEARCH_FAKE_OBJ)) {
 +            av_dict_set(&format_opts, "framerate",
 +                        o->frame_rates[o->nb_frame_rates - 1].u.str, 0);
 +        }
 +    }
 +    if (o->nb_frame_sizes) {
 +        av_dict_set(&format_opts, "video_size", o->frame_sizes[o->nb_frame_sizes - 1].u.str, 0);
 +    }
 +    if (o->nb_frame_pix_fmts)
 +        av_dict_set(&format_opts, "pixel_format", o->frame_pix_fmts[o->nb_frame_pix_fmts - 1].u.str, 0);
 +
 +    ic->video_codec_id   = video_codec_name ?
 +        find_codec_or_die(video_codec_name   , AVMEDIA_TYPE_VIDEO   , 0)->id : CODEC_ID_NONE;
 +    ic->audio_codec_id   = audio_codec_name ?
 +        find_codec_or_die(audio_codec_name   , AVMEDIA_TYPE_AUDIO   , 0)->id : CODEC_ID_NONE;
 +    ic->subtitle_codec_id= subtitle_codec_name ?
 +        find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 0)->id : CODEC_ID_NONE;
 +    ic->flags |= AVFMT_FLAG_NONBLOCK;
 +    ic->interrupt_callback = int_cb;
 +
 +    /* open the input file with generic avformat function */
 +    err = avformat_open_input(&ic, filename, file_iformat, &format_opts);
 +    if (err < 0) {
 +        print_error(filename, err);
 +        exit_program(1);
 +    }
 +    assert_avoptions(format_opts);
 +
 +    /* apply forced codec ids */
 +    for (i = 0; i < ic->nb_streams; i++)
 +        choose_decoder(o, ic, ic->streams[i]);
 +
 +    /* Set AVCodecContext options for avformat_find_stream_info */
 +    opts = setup_find_stream_info_opts(ic, codec_opts);
 +    orig_nb_streams = ic->nb_streams;
 +
 +    /* If not enough info to get the stream parameters, we decode the
 +       first frames to get it. (used in mpeg case for example) */
 +    ret = avformat_find_stream_info(ic, opts);
 +    if (ret < 0) {
 +        av_log(NULL, AV_LOG_FATAL, "%s: could not find codec parameters\n", filename);
 +        avformat_close_input(&ic);
 +        exit_program(1);
 +    }
 +
 +    timestamp = o->start_time;
 +    /* add the stream start time */
 +    if (ic->start_time != AV_NOPTS_VALUE)
 +        timestamp += ic->start_time;
 +
 +    /* if seeking requested, we execute it */
 +    if (o->start_time != 0) {
 +        ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
 +        if (ret < 0) {
 +            av_log(NULL, AV_LOG_WARNING, "%s: could not seek to position %0.3f\n",
 +                   filename, (double)timestamp / AV_TIME_BASE);
 +        }
 +    }
 +
 +    /* update the current parameters so that they match the one of the input stream */
 +    add_input_streams(o, ic);
 +
 +    /* dump the file content */
 +    av_dump_format(ic, nb_input_files, filename, 0);
 +
 +    input_files = grow_array(input_files, sizeof(*input_files), &nb_input_files, nb_input_files + 1);
 +    if (!(input_files[nb_input_files - 1] = av_mallocz(sizeof(*input_files[0]))))
 +        exit_program(1);
 +
 +    input_files[nb_input_files - 1]->ctx        = ic;
 +    input_files[nb_input_files - 1]->ist_index  = nb_input_streams - ic->nb_streams;
 +    input_files[nb_input_files - 1]->ts_offset  = o->input_ts_offset - (copy_ts ? 0 : timestamp);
 +    input_files[nb_input_files - 1]->nb_streams = ic->nb_streams;
 +    input_files[nb_input_files - 1]->rate_emu   = o->rate_emu;
 +
 +    for (i = 0; i < o->nb_dump_attachment; i++) {
 +        int j;
 +
 +        for (j = 0; j < ic->nb_streams; j++) {
 +            AVStream *st = ic->streams[j];
 +
 +            if (check_stream_specifier(ic, st, o->dump_attachment[i].specifier) == 1)
 +                dump_attachment(st, o->dump_attachment[i].u.str);
 +        }
 +    }
 +
 +    for (i = 0; i < orig_nb_streams; i++)
 +        av_dict_free(&opts[i]);
 +    av_freep(&opts);
 +
 +    reset_options(o, 1);
 +    return 0;
 +}
 +
 +static uint8_t *get_line(AVIOContext *s)
 +{
 +    AVIOContext *line;
 +    uint8_t *buf;
 +    char c;
 +
 +    if (avio_open_dyn_buf(&line) < 0) {
 +        av_log(NULL, AV_LOG_FATAL, "Could not alloc buffer for reading preset.\n");
 +        exit_program(1);
 +    }
 +
 +    while ((c = avio_r8(s)) && c != '\n')
 +        avio_w8(line, c);
 +    avio_w8(line, 0);
 +    avio_close_dyn_buf(line, &buf);
 +
 +    return buf;
 +}
 +
 +static int get_preset_file_2(const char *preset_name, const char *codec_name, AVIOContext **s)
 +{
 +    int i, ret = 1;
 +    char filename[1000];
 +    const char *base[3] = { getenv("AVCONV_DATADIR"),
 +                            getenv("HOME"),
 +                            AVCONV_DATADIR,
 +                            };
 +
 +    for (i = 0; i < FF_ARRAY_ELEMS(base) && ret; i++) {
 +        if (!base[i])
 +            continue;
 +        if (codec_name) {
 +            snprintf(filename, sizeof(filename), "%s%s/%s-%s.avpreset", base[i],
 +                     i != 1 ? "" : "/.avconv", codec_name, preset_name);
 +            ret = avio_open2(s, filename, AVIO_FLAG_READ, &int_cb, NULL);
 +        }
 +        if (ret) {
 +            snprintf(filename, sizeof(filename), "%s%s/%s.avpreset", base[i],
 +                     i != 1 ? "" : "/.avconv", preset_name);
 +            ret = avio_open2(s, filename, AVIO_FLAG_READ, &int_cb, NULL);
 +        }
 +    }
 +    return ret;
 +}
 +
 +static void choose_encoder(OptionsContext *o, AVFormatContext *s, OutputStream *ost)
 +{
 +    char *codec_name = NULL;
 +
 +    MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, ost->st);
 +    if (!codec_name) {
 +        ost->st->codec->codec_id = av_guess_codec(s->oformat, NULL, s->filename,
 +                                                  NULL, ost->st->codec->codec_type);
 +        ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
 +    } else if (!strcmp(codec_name, "copy"))
 +        ost->stream_copy = 1;
 +    else {
 +        ost->enc = find_codec_or_die(codec_name, ost->st->codec->codec_type, 1);
 +        ost->st->codec->codec_id = ost->enc->id;
 +    }
 +}
 +
 +static OutputStream *new_output_stream(OptionsContext *o, AVFormatContext *oc, enum AVMediaType type, int source_index)
 +{
 +    OutputStream *ost;
 +    AVStream *st = avformat_new_stream(oc, NULL);
 +    int idx      = oc->nb_streams - 1, ret = 0;
 +    char *bsf = NULL, *next, *codec_tag = NULL;
 +    AVBitStreamFilterContext *bsfc, *bsfc_prev = NULL;
 +    double qscale = -1;
 +    char *buf = NULL, *arg = NULL, *preset = NULL;
 +    AVIOContext *s = NULL;
 +
 +    if (!st) {
 +        av_log(NULL, AV_LOG_FATAL, "Could not alloc stream.\n");
 +        exit_program(1);
 +    }
 +
 +    if (oc->nb_streams - 1 < o->nb_streamid_map)
 +        st->id = o->streamid_map[oc->nb_streams - 1];
 +
 +    output_streams = grow_array(output_streams, sizeof(*output_streams), &nb_output_streams,
 +                                nb_output_streams + 1);
 +    if (!(ost = av_mallocz(sizeof(*ost))))
 +        exit_program(1);
 +    output_streams[nb_output_streams - 1] = ost;
 +
 +    ost->file_index = nb_output_files;
 +    ost->index      = idx;
 +    ost->st         = st;
 +    st->codec->codec_type = type;
 +    choose_encoder(o, oc, ost);
 +    if (ost->enc) {
 +        ost->opts  = filter_codec_opts(codec_opts, ost->enc->id, oc, st, ost->enc);
 +    }
 +
 +    avcodec_get_context_defaults3(st->codec, ost->enc);
 +    st->codec->codec_type = type; // XXX hack, avcodec_get_context_defaults2() sets type to unknown for stream copy
 +
 +    MATCH_PER_STREAM_OPT(presets, str, preset, oc, st);
 +    if (preset && (!(ret = get_preset_file_2(preset, ost->enc->name, &s)))) {
 +        do  {
 +            buf = get_line(s);
 +            if (!buf[0] || buf[0] == '#') {
 +                av_free(buf);
 +                continue;
 +            }
 +            if (!(arg = strchr(buf, '='))) {
 +                av_log(NULL, AV_LOG_FATAL, "Invalid line found in the preset file.\n");
 +                exit_program(1);
 +            }
 +            *arg++ = 0;
 +            av_dict_set(&ost->opts, buf, arg, AV_DICT_DONT_OVERWRITE);
 +            av_free(buf);
 +        } while (!s->eof_reached);
 +        avio_close(s);
 +    }
 +    if (ret) {
 +        av_log(NULL, AV_LOG_FATAL,
 +               "Preset %s specified for stream %d:%d, but could not be opened.\n",
 +               preset, ost->file_index, ost->index);
 +        exit_program(1);
 +    }
 +
 +    ost->max_frames = INT64_MAX;
 +    MATCH_PER_STREAM_OPT(max_frames, i64, ost->max_frames, oc, st);
 +
 +    MATCH_PER_STREAM_OPT(bitstream_filters, str, bsf, oc, st);
 +    while (bsf) {
 +        if (next = strchr(bsf, ','))
 +            *next++ = 0;
 +        if (!(bsfc = av_bitstream_filter_init(bsf))) {
 +            av_log(NULL, AV_LOG_FATAL, "Unknown bitstream filter %s\n", bsf);
 +            exit_program(1);
 +        }
 +        if (bsfc_prev)
 +            bsfc_prev->next = bsfc;
 +        else
 +            ost->bitstream_filters = bsfc;
 +
 +        bsfc_prev = bsfc;
 +        bsf       = next;
 +    }
 +
 +    MATCH_PER_STREAM_OPT(codec_tags, str, codec_tag, oc, st);
 +    if (codec_tag) {
 +        uint32_t tag = strtol(codec_tag, &next, 0);
 +        if (*next)
 +            tag = AV_RL32(codec_tag);
 +        st->codec->codec_tag = tag;
 +    }
 +
 +    MATCH_PER_STREAM_OPT(qscale, dbl, qscale, oc, st);
 +    if (qscale >= 0 || same_quant) {
 +        st->codec->flags |= CODEC_FLAG_QSCALE;
 +        st->codec->global_quality = FF_QP2LAMBDA * qscale;
 +    }
 +
 +    if (oc->oformat->flags & AVFMT_GLOBALHEADER)
 +        st->codec->flags |= CODEC_FLAG_GLOBAL_HEADER;
 +
 +    av_opt_get_int(sws_opts, "sws_flags", 0, &ost->sws_flags);
 +    av_opt_get_int   (swr_opts, "dither_method", 0, &ost->swr_dither_method);
 +    av_opt_get_double(swr_opts, "dither_scale" , 0, &ost->swr_dither_scale);
 +
 +    ost->source_index = source_index;
 +    if (source_index >= 0) {
 +        ost->sync_ist = input_streams[source_index];
 +        input_streams[source_index]->discard = 0;
 +        input_streams[source_index]->st->discard = AVDISCARD_NONE;
 +    }
 +
 +    return ost;
 +}
 +
 +static void parse_matrix_coeffs(uint16_t *dest, const char *str)
 +{
 +    int i;
 +    const char *p = str;
 +    for (i = 0;; i++) {
 +        dest[i] = atoi(p);
 +        if (i == 63)
 +            break;
 +        p = strchr(p, ',');
 +        if (!p) {
 +            av_log(NULL, AV_LOG_FATAL, "Syntax error in matrix \"%s\" at coeff %d\n", str, i);
 +            exit_program(1);
 +        }
 +        p++;
 +    }
 +}
 +
 +static OutputStream *new_video_stream(OptionsContext *o, AVFormatContext *oc, int source_index)
 +{
 +    AVStream *st;
 +    OutputStream *ost;
 +    AVCodecContext *video_enc;
 +    char *frame_rate = NULL;
 +
 +    ost = new_output_stream(o, oc, AVMEDIA_TYPE_VIDEO, source_index);
 +    st  = ost->st;
 +    video_enc = st->codec;
 +
 +    MATCH_PER_STREAM_OPT(frame_rates, str, frame_rate, oc, st);
 +    if (frame_rate && av_parse_video_rate(&ost->frame_rate, frame_rate) < 0) {
 +        av_log(NULL, AV_LOG_FATAL, "Invalid framerate value: %s\n", frame_rate);
 +        exit_program(1);
 +    }
 +
 +    if (!ost->stream_copy) {
 +        const char *p = NULL;
 +        char *frame_size = NULL;
 +        char *frame_aspect_ratio = NULL, *frame_pix_fmt = NULL;
 +        char *intra_matrix = NULL, *inter_matrix = NULL;
 +        const char *filters = "null";
 +        int i;
 +
 +        MATCH_PER_STREAM_OPT(frame_sizes, str, frame_size, oc, st);
 +        if (frame_size && av_parse_video_size(&video_enc->width, &video_enc->height, frame_size) < 0) {
 +            av_log(NULL, AV_LOG_FATAL, "Invalid frame size: %s.\n", frame_size);
 +            exit_program(1);
 +        }
 +
 +        MATCH_PER_STREAM_OPT(frame_aspect_ratios, str, frame_aspect_ratio, oc, st);
 +        if (frame_aspect_ratio) {
 +            AVRational q;
 +            if (av_parse_ratio(&q, frame_aspect_ratio, 255, 0, NULL) < 0 ||
 +                q.num <= 0 || q.den <= 0) {
 +                av_log(NULL, AV_LOG_FATAL, "Invalid aspect ratio: %s\n", frame_aspect_ratio);
 +                exit_program(1);
 +            }
 +            ost->frame_aspect_ratio = av_q2d(q);
 +        }
 +
 +        video_enc->bits_per_raw_sample = frame_bits_per_raw_sample;
 +        MATCH_PER_STREAM_OPT(frame_pix_fmts, str, frame_pix_fmt, oc, st);
 +        if (frame_pix_fmt && *frame_pix_fmt == '+') {
 +            ost->keep_pix_fmt = 1;
 +            if (!*++frame_pix_fmt)
 +                frame_pix_fmt = NULL;
 +        }
 +        if (frame_pix_fmt && (video_enc->pix_fmt = av_get_pix_fmt(frame_pix_fmt)) == PIX_FMT_NONE) {
 +            av_log(NULL, AV_LOG_FATAL, "Unknown pixel format requested: %s.\n", frame_pix_fmt);
 +            exit_program(1);
 +        }
 +        st->sample_aspect_ratio = video_enc->sample_aspect_ratio;
 +
 +        if (intra_only)
 +            video_enc->gop_size = 0;
 +        MATCH_PER_STREAM_OPT(intra_matrices, str, intra_matrix, oc, st);
 +        if (intra_matrix) {
 +            if (!(video_enc->intra_matrix = av_mallocz(sizeof(*video_enc->intra_matrix) * 64))) {
 +                av_log(NULL, AV_LOG_FATAL, "Could not allocate memory for intra matrix.\n");
 +                exit_program(1);
 +            }
 +            parse_matrix_coeffs(video_enc->intra_matrix, intra_matrix);
 +        }
 +        MATCH_PER_STREAM_OPT(inter_matrices, str, inter_matrix, oc, st);
 +        if (inter_matrix) {
 +            if (!(video_enc->inter_matrix = av_mallocz(sizeof(*video_enc->inter_matrix) * 64))) {
 +                av_log(NULL, AV_LOG_FATAL, "Could not allocate memory for inter matrix.\n");
 +                exit_program(1);
 +            }
 +            parse_matrix_coeffs(video_enc->inter_matrix, inter_matrix);
 +        }
 +
 +        MATCH_PER_STREAM_OPT(rc_overrides, str, p, oc, st);
 +        for (i = 0; p; i++) {
 +            int start, end, q;
 +            int e = sscanf(p, "%d,%d,%d", &start, &end, &q);
 +            if (e != 3) {
 +                av_log(NULL, AV_LOG_FATAL, "error parsing rc_override\n");
 +                exit_program(1);
 +            }
 +            /* FIXME realloc failure */
 +            video_enc->rc_override =
 +                av_realloc(video_enc->rc_override,
 +                           sizeof(RcOverride) * (i + 1));
 +            video_enc->rc_override[i].start_frame = start;
 +            video_enc->rc_override[i].end_frame   = end;
 +            if (q > 0) {
 +                video_enc->rc_override[i].qscale         = q;
 +                video_enc->rc_override[i].quality_factor = 1.0;
 +            }
 +            else {
 +                video_enc->rc_override[i].qscale         = 0;
 +                video_enc->rc_override[i].quality_factor = -q/100.0;
 +            }
 +            p = strchr(p, '/');
 +            if (p) p++;
 +        }
 +        video_enc->rc_override_count = i;
 +        if (!video_enc->rc_initial_buffer_occupancy)
 +            video_enc->rc_initial_buffer_occupancy = video_enc->rc_buffer_size * 3 / 4;
 +        video_enc->intra_dc_precision = intra_dc_precision - 8;
 +
 +        if (do_psnr)
 +            video_enc->flags|= CODEC_FLAG_PSNR;
 +
 +        /* two pass mode */
 +        if (do_pass) {
 +            if (do_pass & 1) {
 +                video_enc->flags |= CODEC_FLAG_PASS1;
 +            }
 +            if (do_pass & 2) {
 +                video_enc->flags |= CODEC_FLAG_PASS2;
 +            }
 +        }
 +
 +        MATCH_PER_STREAM_OPT(forced_key_frames, str, ost->forced_keyframes, oc, st);
 +        if (ost->forced_keyframes)
 +            ost->forced_keyframes = av_strdup(ost->forced_keyframes);
 +
 +        MATCH_PER_STREAM_OPT(force_fps, i, ost->force_fps, oc, st);
 +
 +        ost->top_field_first = -1;
 +        MATCH_PER_STREAM_OPT(top_field_first, i, ost->top_field_first, oc, st);
 +
 +        MATCH_PER_STREAM_OPT(filters, str, filters, oc, st);
 +        ost->avfilter = av_strdup(filters);
 +    } else {
 +        MATCH_PER_STREAM_OPT(copy_initial_nonkeyframes, i, ost->copy_initial_nonkeyframes, oc ,st);
 +    }
 +
 +    return ost;
 +}
 +
 +static OutputStream *new_audio_stream(OptionsContext *o, AVFormatContext *oc, int source_index)
 +{
 +    int n;
 +    AVStream *st;
 +    OutputStream *ost;
 +    AVCodecContext *audio_enc;
 +
 +    ost = new_output_stream(o, oc, AVMEDIA_TYPE_AUDIO, source_index);
 +    st  = ost->st;
 +
 +    audio_enc = st->codec;
 +    audio_enc->codec_type = AVMEDIA_TYPE_AUDIO;
 +
 +    if (!ost->stream_copy) {
 +        char *sample_fmt = NULL;
 +        const char *filters = "anull";
 +
 +        MATCH_PER_STREAM_OPT(audio_channels, i, audio_enc->channels, oc, st);
 +
 +        MATCH_PER_STREAM_OPT(sample_fmts, str, sample_fmt, oc, st);
 +        if (sample_fmt &&
 +            (audio_enc->sample_fmt = av_get_sample_fmt(sample_fmt)) == AV_SAMPLE_FMT_NONE) {
 +            av_log(NULL, AV_LOG_FATAL, "Invalid sample format '%s'\n", sample_fmt);
 +            exit_program(1);
 +        }
 +
 +        MATCH_PER_STREAM_OPT(audio_sample_rate, i, audio_enc->sample_rate, oc, st);
 +
 +        MATCH_PER_STREAM_OPT(filters, str, filters, oc, st);
 +
 +        av_assert1(filters);
 +        ost->avfilter = av_strdup(filters);
 +
 +        /* check for channel mapping for this audio stream */
 +        for (n = 0; n < o->nb_audio_channel_maps; n++) {
 +            AudioChannelMap *map = &o->audio_channel_maps[n];
 +            InputStream *ist = input_streams[ost->source_index];
 +            if ((map->channel_idx == -1 || (ist->file_index == map->file_idx && ist->st->index == map->stream_idx)) &&
 +                (map->ofile_idx   == -1 || ost->file_index == map->ofile_idx) &&
 +                (map->ostream_idx == -1 || ost->st->index  == map->ostream_idx)) {
 +                if (ost->audio_channels_mapped < FF_ARRAY_ELEMS(ost->audio_channels_map))
 +                    ost->audio_channels_map[ost->audio_channels_mapped++] = map->channel_idx;
 +                else
 +                    av_log(NULL, AV_LOG_FATAL, "Max channel mapping for output %d.%d reached\n",
 +                           ost->file_index, ost->st->index);
 +            }
 +        }
 +    }
 +
 +    return ost;
 +}
 +
 +static OutputStream *new_data_stream(OptionsContext *o, AVFormatContext *oc, int source_index)
 +{
 +    OutputStream *ost;
 +
 +    ost = new_output_stream(o, oc, AVMEDIA_TYPE_DATA, source_index);
 +    if (!ost->stream_copy) {
 +        av_log(NULL, AV_LOG_FATAL, "Data stream encoding not supported yet (only streamcopy)\n");
 +        exit_program(1);
 +    }
 +
 +    return ost;
 +}
 +
 +static OutputStream *new_attachment_stream(OptionsContext *o, AVFormatContext *oc, int source_index)
 +{
 +    OutputStream *ost = new_output_stream(o, oc, AVMEDIA_TYPE_ATTACHMENT, source_index);
 +    ost->stream_copy = 1;
 +    return ost;
 +}
 +
 +static OutputStream *new_subtitle_stream(OptionsContext *o, AVFormatContext *oc, int source_index)
 +{
 +    AVStream *st;
 +    OutputStream *ost;
 +    AVCodecContext *subtitle_enc;
 +
 +    ost = new_output_stream(o, oc, AVMEDIA_TYPE_SUBTITLE, source_index);
 +    st  = ost->st;
 +    subtitle_enc = st->codec;
 +
 +    subtitle_enc->codec_type = AVMEDIA_TYPE_SUBTITLE;
 +
 +    MATCH_PER_STREAM_OPT(copy_initial_nonkeyframes, i, ost->copy_initial_nonkeyframes, oc, st);
 +
 +    return ost;
 +}
 +
 +/* arg format is "output-stream-index:streamid-value". */
 +static int opt_streamid(OptionsContext *o, const char *opt, const char *arg)
 +{
 +    int idx;
 +    char *p;
 +    char idx_str[16];
 +
 +    av_strlcpy(idx_str, arg, sizeof(idx_str));
 +    p = strchr(idx_str, ':');
 +    if (!p) {
 +        av_log(NULL, AV_LOG_FATAL,
 +               "Invalid value '%s' for option '%s', required syntax is 'index:value'\n",
 +               arg, opt);
 +        exit_program(1);
 +    }
 +    *p++ = '\0';
 +    idx = parse_number_or_die(opt, idx_str, OPT_INT, 0, MAX_STREAMS-1);
 +    o->streamid_map = grow_array(o->streamid_map, sizeof(*o->streamid_map), &o->nb_streamid_map, idx+1);
 +    o->streamid_map[idx] = parse_number_or_die(opt, p, OPT_INT, 0, INT_MAX);
 +    return 0;
 +}
 +
 +static int copy_chapters(InputFile *ifile, OutputFile *ofile, int copy_metadata)
 +{
 +    AVFormatContext *is = ifile->ctx;
 +    AVFormatContext *os = ofile->ctx;
 +    int i;
 +
 +    for (i = 0; i < is->nb_chapters; i++) {
 +        AVChapter *in_ch = is->chapters[i], *out_ch;
 +        int64_t ts_off   = av_rescale_q(ofile->start_time - ifile->ts_offset,
 +                                       AV_TIME_BASE_Q, in_ch->time_base);
 +        int64_t rt       = (ofile->recording_time == INT64_MAX) ? INT64_MAX :
 +                           av_rescale_q(ofile->recording_time, AV_TIME_BASE_Q, in_ch->time_base);
 +
 +
 +        if (in_ch->end < ts_off)
 +            continue;
 +        if (rt != INT64_MAX && in_ch->start > rt + ts_off)
 +            break;
 +
 +        out_ch = av_mallocz(sizeof(AVChapter));
 +        if (!out_ch)
 +            return AVERROR(ENOMEM);
 +
 +        out_ch->id        = in_ch->id;
 +        out_ch->time_base = in_ch->time_base;
 +        out_ch->start     = FFMAX(0,  in_ch->start - ts_off);
 +        out_ch->end       = FFMIN(rt, in_ch->end   - ts_off);
 +
 +        if (copy_metadata)
 +            av_dict_copy(&out_ch->metadata, in_ch->metadata, 0);
 +
 +        os->nb_chapters++;
 +        os->chapters = av_realloc_f(os->chapters, os->nb_chapters, sizeof(AVChapter));
 +        if (!os->chapters)
 +            return AVERROR(ENOMEM);
 +        os->chapters[os->nb_chapters - 1] = out_ch;
 +    }
 +    return 0;
 +}
 +
 +static int read_ffserver_streams(OptionsContext *o, AVFormatContext *s, const char *filename)
 +{
 +    int i, err;
 +    AVFormatContext *ic = avformat_alloc_context();
 +
 +    ic->interrupt_callback = int_cb;
 +    err = avformat_open_input(&ic, filename, NULL, NULL);
 +    if (err < 0)
 +        return err;
 +    /* copy stream format */
 +    for(i=0;i<ic->nb_streams;i++) {
 +        AVStream *st;
 +        OutputStream *ost;
 +        AVCodec *codec;
 +        AVCodecContext *avctx;
 +
 +        codec = avcodec_find_encoder(ic->streams[i]->codec->codec_id);
 +        ost   = new_output_stream(o, s, codec->type, -1);
 +        st    = ost->st;
 +        avctx = st->codec;
 +        ost->enc = codec;
 +
 +        // FIXME: a more elegant solution is needed
 +        memcpy(st, ic->streams[i], sizeof(AVStream));
 +        st->cur_dts = 0;
 +        st->info = av_malloc(sizeof(*st->info));
 +        memcpy(st->info, ic->streams[i]->info, sizeof(*st->info));
 +        st->codec= avctx;
 +        avcodec_copy_context(st->codec, ic->streams[i]->codec);
 +
 +        if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO && !ost->stream_copy)
 +            choose_sample_fmt(st, codec);
 +        else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && !ost->stream_copy)
 +            choose_pixel_fmt(st, codec, st->codec->pix_fmt);
 +    }
 +
 +    avformat_close_input(&ic);
 +    return 0;
 +}
 +
 +static void init_output_filter(OutputFilter *ofilter, OptionsContext *o,
 +                               AVFormatContext *oc)
 +{
 +    OutputStream *ost;
 +
 +    switch (avfilter_pad_get_type(ofilter->out_tmp->filter_ctx->output_pads,
 +                                  ofilter->out_tmp->pad_idx)) {
 +    case AVMEDIA_TYPE_VIDEO: ost = new_video_stream(o, oc, -1); break;
 +    case AVMEDIA_TYPE_AUDIO: ost = new_audio_stream(o, oc, -1); break;
 +    default:
 +        av_log(NULL, AV_LOG_FATAL, "Only video and audio filters are supported "
 +               "currently.\n");
 +        exit_program(1);
 +    }
 +
 +    ost->source_index = -1;
 +    ost->filter       = ofilter;
 +
 +    ofilter->ost      = ost;
 +
 +    if (ost->stream_copy) {
 +        av_log(NULL, AV_LOG_ERROR, "Streamcopy requested for output stream %d:%d, "
 +               "which is fed from a complex filtergraph. Filtering and streamcopy "
 +               "cannot be used together.\n", ost->file_index, ost->index);
 +        exit_program(1);
 +    }
 +    if (o->recording_time != INT64_MAX)
 +        av_log(NULL, AV_LOG_WARNING,
 +               "-t does not work with -filter_complex (yet).\n");
 +
 +    if (configure_output_filter(ofilter->graph, ofilter, ofilter->out_tmp) < 0) {
 +        av_log(NULL, AV_LOG_FATAL, "Error configuring filter.\n");
 +        exit_program(1);
 +    }
 +    avfilter_inout_free(&ofilter->out_tmp);
 +}
 +
 +static void opt_output_file(void *optctx, const char *filename)
 +{
 +    OptionsContext *o = optctx;
 +    AVFormatContext *oc;
 +    int i, j, err;
 +    AVOutputFormat *file_oformat;
 +    OutputStream *ost;
 +    InputStream  *ist;
 +
 +    if (configure_complex_filters() < 0) {
 +        av_log(NULL, AV_LOG_FATAL, "Error configuring filters.\n");
 +        exit_program(1);
 +    }
 +
 +    if (!strcmp(filename, "-"))
 +        filename = "pipe:";
 +
 +    err = avformat_alloc_output_context2(&oc, NULL, o->format, filename);
 +    if (!oc) {
 +        print_error(filename, err);
 +        exit_program(1);
 +    }
 +    file_oformat= oc->oformat;
 +    oc->interrupt_callback = int_cb;
 +
 +    /* create streams for all unlabeled output pads */
 +    for (i = 0; i < nb_filtergraphs; i++) {
 +        FilterGraph *fg = filtergraphs[i];
 +        for (j = 0; j < fg->nb_outputs; j++) {
 +            OutputFilter *ofilter = fg->outputs[j];
 +
 +            if (!ofilter->out_tmp || ofilter->out_tmp->name)
 +                continue;
 +
 +            switch (avfilter_pad_get_type(ofilter->out_tmp->filter_ctx->output_pads,
 +                                          ofilter->out_tmp->pad_idx)) {
 +            case AVMEDIA_TYPE_VIDEO:    o->video_disable    = 1; break;
 +            case AVMEDIA_TYPE_AUDIO:    o->audio_disable    = 1; break;
 +            case AVMEDIA_TYPE_SUBTITLE: o->subtitle_disable = 1; break;
 +            }
 +            init_output_filter(ofilter, o, oc);
 +        }
 +    }
 +
 +    if (!strcmp(file_oformat->name, "ffm") &&
 +        av_strstart(filename, "http:", NULL)) {
 +        int j;
 +        /* special case for files sent to ffserver: we get the stream
 +           parameters from ffserver */
 +        int err = read_ffserver_streams(o, oc, filename);
 +        if (err < 0) {
 +            print_error(filename, err);
 +            exit_program(1);
 +        }
 +        for(j = nb_output_streams - oc->nb_streams; j < nb_output_streams; j++) {
 +            ost = output_streams[j];
 +            for (i = 0; i < nb_input_streams; i++) {
 +                ist = input_streams[i];
 +                if(ist->st->codec->codec_type == ost->st->codec->codec_type){
 +                    ost->sync_ist= ist;
 +                    ost->source_index= i;
 +                    if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO) ost->avfilter = av_strdup("anull");
 +                    if(ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) ost->avfilter = av_strdup("null");
 +                    ist->discard = 0;
 +                    ist->st->discard = AVDISCARD_NONE;
 +                    break;
 +                }
 +            }
 +            if(!ost->sync_ist){
 +                av_log(NULL, AV_LOG_FATAL, "Missing %s stream which is required by this ffm\n", av_get_media_type_string(ost->st->codec->codec_type));
 +                exit_program(1);
 +            }
 +        }
 +    } else if (!o->nb_stream_maps) {
 +        /* pick the "best" stream of each type */
 +
 +        /* video: highest resolution */
 +        if (!o->video_disable && oc->oformat->video_codec != CODEC_ID_NONE) {
 +            int area = 0, idx = -1;
 +            for (i = 0; i < nb_input_streams; i++) {
 +                ist = input_streams[i];
 +                if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
 +                    ist->st->codec->width * ist->st->codec->height > area) {
 +                    area = ist->st->codec->width * ist->st->codec->height;
 +                    idx = i;
 +                }
 +            }
 +            if (idx >= 0)
 +                new_video_stream(o, oc, idx);
 +        }
 +
 +        /* audio: most channels */
 +        if (!o->audio_disable && oc->oformat->audio_codec != CODEC_ID_NONE) {
 +            int channels = 0, idx = -1;
 +            for (i = 0; i < nb_input_streams; i++) {
 +                ist = input_streams[i];
 +                if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
 +                    ist->st->codec->channels > channels) {
 +                    channels = ist->st->codec->channels;
 +                    idx = i;
 +                }
 +            }
 +            if (idx >= 0)
 +                new_audio_stream(o, oc, idx);
 +        }
 +
 +        /* subtitles: pick first */
 +        if (!o->subtitle_disable && (oc->oformat->subtitle_codec != CODEC_ID_NONE || subtitle_codec_name)) {
 +            for (i = 0; i < nb_input_streams; i++)
 +                if (input_streams[i]->st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
 +                    new_subtitle_stream(o, oc, i);
 +                    break;
 +                }
 +        }
 +        /* do something with data? */
 +    } else {
 +        for (i = 0; i < o->nb_stream_maps; i++) {
 +            StreamMap *map = &o->stream_maps[i];
 +            int src_idx = input_files[map->file_index]->ist_index + map->stream_index;
 +
 +            if (map->disabled)
 +                continue;
 +
 +            if (map->linklabel) {
 +                FilterGraph *fg;
 +                OutputFilter *ofilter = NULL;
 +                int j, k;
 +
 +                for (j = 0; j < nb_filtergraphs; j++) {
 +                    fg = filtergraphs[j];
 +                    for (k = 0; k < fg->nb_outputs; k++) {
 +                        AVFilterInOut *out = fg->outputs[k]->out_tmp;
 +                        if (out && !strcmp(out->name, map->linklabel)) {
 +                            ofilter = fg->outputs[k];
 +                            goto loop_end;
 +                        }
 +                    }
 +                }
 +loop_end:
 +                if (!ofilter) {
 +                    av_log(NULL, AV_LOG_FATAL, "Output with label '%s' does not exist "
 +                           "in any defined filter graph.\n", map->linklabel);
 +                    exit_program(1);
 +                }
 +                init_output_filter(ofilter, o, oc);
 +            } else {
 +                ist = input_streams[input_files[map->file_index]->ist_index + map->stream_index];
 +                if(o->subtitle_disable && ist->st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE)
 +                    continue;
 +                if(o->   audio_disable && ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
 +                    continue;
 +                if(o->   video_disable && ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
 +                    continue;
 +                if(o->    data_disable && ist->st->codec->codec_type == AVMEDIA_TYPE_DATA)
 +                    continue;
 +
 +                switch (ist->st->codec->codec_type) {
 +                case AVMEDIA_TYPE_VIDEO:      ost = new_video_stream     (o, oc, src_idx); break;
 +                case AVMEDIA_TYPE_AUDIO:      ost = new_audio_stream     (o, oc, src_idx); break;
 +                case AVMEDIA_TYPE_SUBTITLE:   ost = new_subtitle_stream  (o, oc, src_idx); break;
 +                case AVMEDIA_TYPE_DATA:       ost = new_data_stream      (o, oc, src_idx); break;
 +                case AVMEDIA_TYPE_ATTACHMENT: ost = new_attachment_stream(o, oc, src_idx); break;
 +                default:
 +                    av_log(NULL, AV_LOG_FATAL, "Cannot map stream #%d:%d - unsupported type.\n",
 +                           map->file_index, map->stream_index);
 +                    exit_program(1);
 +                }
 +            }
 +        }
 +    }
 +
 +
 +    for (i = nb_output_streams - oc->nb_streams; i < nb_output_streams; i++) { //for all streams of this output file
 +        AVDictionaryEntry *e;
 +        ost = output_streams[i];
 +
 +        if (   ost->stream_copy
 +            && (e = av_dict_get(codec_opts, "flags", NULL, AV_DICT_IGNORE_SUFFIX))
 +            && (!e->key[5] || check_stream_specifier(oc, ost->st, e->key+6)))
 +            if (av_opt_set(ost->st->codec, "flags", e->value, 0) < 0)
 +                exit_program(1);
 +    }
 +
 +    /* handle attached files */
 +    for (i = 0; i < o->nb_attachments; i++) {
 +        AVIOContext *pb;
 +        uint8_t *attachment;
 +        const char *p;
 +        int64_t len;
 +
 +        if ((err = avio_open2(&pb, o->attachments[i], AVIO_FLAG_READ, &int_cb, NULL)) < 0) {
 +            av_log(NULL, AV_LOG_FATAL, "Could not open attachment file %s.\n",
 +                   o->attachments[i]);
 +            exit_program(1);
 +        }
 +        if ((len = avio_size(pb)) <= 0) {
 +            av_log(NULL, AV_LOG_FATAL, "Could not get size of the attachment %s.\n",
 +                   o->attachments[i]);
 +            exit_program(1);
 +        }
 +        if (!(attachment = av_malloc(len))) {
 +            av_log(NULL, AV_LOG_FATAL, "Attachment %s too large to fit into memory.\n",
 +                   o->attachments[i]);
 +            exit_program(1);
 +        }
 +        avio_read(pb, attachment, len);
 +
 +        ost = new_attachment_stream(o, oc, -1);
 +        ost->stream_copy               = 0;
 +        ost->attachment_filename       = o->attachments[i];
 +        ost->st->codec->extradata      = attachment;
 +        ost->st->codec->extradata_size = len;
 +
 +        p = strrchr(o->attachments[i], '/');
 +        av_dict_set(&ost->st->metadata, "filename", (p && *p) ? p + 1 : o->attachments[i], AV_DICT_DONT_OVERWRITE);
 +        avio_close(pb);
 +    }
 +
 +    output_files = grow_array(output_files, sizeof(*output_files), &nb_output_files, nb_output_files + 1);
 +    if (!(output_files[nb_output_files - 1] = av_mallocz(sizeof(*output_files[0]))))
 +        exit_program(1);
 +
 +    output_files[nb_output_files - 1]->ctx            = oc;
 +    output_files[nb_output_files - 1]->ost_index      = nb_output_streams - oc->nb_streams;
 +    output_files[nb_output_files - 1]->recording_time = o->recording_time;
 +    if (o->recording_time != INT64_MAX)
 +        oc->duration = o->recording_time;
 +    output_files[nb_output_files - 1]->start_time     = o->start_time;
 +    output_files[nb_output_files - 1]->limit_filesize = o->limit_filesize;
 +    av_dict_copy(&output_files[nb_output_files - 1]->opts, format_opts, 0);
 +
 +    /* check filename in case of an image number is expected */
 +    if (oc->oformat->flags & AVFMT_NEEDNUMBER) {
 +        if (!av_filename_number_test(oc->filename)) {
 +            print_error(oc->filename, AVERROR(EINVAL));
 +            exit_program(1);
 +        }
 +    }
 +
 +    if (!(oc->oformat->flags & AVFMT_NOFILE)) {
 +        /* test if it already exists to avoid losing precious files */
 +        assert_file_overwrite(filename);
 +
 +        /* open the file */
 +        if ((err = avio_open2(&oc->pb, filename, AVIO_FLAG_WRITE,
 +                              &oc->interrupt_callback,
 +                              &output_files[nb_output_files - 1]->opts)) < 0) {
 +            print_error(filename, err);
 +            exit_program(1);
 +        }
 +    }
 +
 +    if (o->mux_preload) {
 +        uint8_t buf[64];
 +        snprintf(buf, sizeof(buf), "%d", (int)(o->mux_preload*AV_TIME_BASE));
 +        av_dict_set(&output_files[nb_output_files - 1]->opts, "preload", buf, 0);
 +    }
 +    oc->max_delay = (int)(o->mux_max_delay * AV_TIME_BASE);
 +
 +    /* copy metadata */
 +    for (i = 0; i < o->nb_metadata_map; i++) {
 +        char *p;
 +        int in_file_index = strtol(o->metadata_map[i].u.str, &p, 0);
 +
 +        if (in_file_index >= nb_input_files) {
 +            av_log(NULL, AV_LOG_FATAL, "Invalid input file index %d while processing metadata maps\n", in_file_index);
 +            exit_program(1);
 +        }
 +        copy_metadata(o->metadata_map[i].specifier, *p ? p + 1 : p, oc, in_file_index >= 0 ? input_files[in_file_index]->ctx : NULL, o);
 +    }
 +
 +    /* copy chapters */
 +    if (o->chapters_input_file >= nb_input_files) {
 +        if (o->chapters_input_file == INT_MAX) {
 +            /* copy chapters from the first input file that has them*/
 +            o->chapters_input_file = -1;
 +            for (i = 0; i < nb_input_files; i++)
 +                if (input_files[i]->ctx->nb_chapters) {
 +                    o->chapters_input_file = i;
 +                    break;
 +                }
 +        } else {
 +            av_log(NULL, AV_LOG_FATAL, "Invalid input file index %d in chapter mapping.\n",
 +                   o->chapters_input_file);
 +            exit_program(1);
 +        }
 +    }
 +    if (o->chapters_input_file >= 0)
 +        copy_chapters(input_files[o->chapters_input_file], output_files[nb_output_files - 1],
 +                      !o->metadata_chapters_manual);
 +
 +    /* copy global metadata by default */
 +    if (!o->metadata_global_manual && nb_input_files){
 +        av_dict_copy(&oc->metadata, input_files[0]->ctx->metadata,
 +                     AV_DICT_DONT_OVERWRITE);
 +        if(o->recording_time != INT64_MAX)
 +            av_dict_set(&oc->metadata, "duration", NULL, 0);
 +        av_dict_set(&oc->metadata, "creation_time", NULL, 0);
 +    }
 +    if (!o->metadata_streams_manual)
 +        for (i = output_files[nb_output_files - 1]->ost_index; i < nb_output_streams; i++) {
 +            InputStream *ist;
 +            if (output_streams[i]->source_index < 0)         /* this is true e.g. for attached files */
 +                continue;
 +            ist = input_streams[output_streams[i]->source_index];
 +            av_dict_copy(&output_streams[i]->st->metadata, ist->st->metadata, AV_DICT_DONT_OVERWRITE);
 +        }
 +
 +    /* process manually set metadata */
 +    for (i = 0; i < o->nb_metadata; i++) {
 +        AVDictionary **m;
 +        char type, *val;
 +        const char *stream_spec;
 +        int index = 0, j, ret = 0;
 +
 +        val = strchr(o->metadata[i].u.str, '=');
 +        if (!val) {
 +            av_log(NULL, AV_LOG_FATAL, "No '=' character in metadata string %s.\n",
 +                   o->metadata[i].u.str);
 +            exit_program(1);
 +        }
 +        *val++ = 0;
 +
 +        parse_meta_type(o->metadata[i].specifier, &type, &index, &stream_spec);
 +        if (type == 's') {
 +            for (j = 0; j < oc->nb_streams; j++) {
 +                if ((ret = check_stream_specifier(oc, oc->streams[j], stream_spec)) > 0) {
 +                    av_dict_set(&oc->streams[j]->metadata, o->metadata[i].u.str, *val ? val : NULL, 0);
 +                } else if (ret < 0)
 +                    exit_program(1);
 +            }
 +        }
 +        else {
 +            switch (type) {
 +            case 'g':
 +                m = &oc->metadata;
 +                break;
 +            case 'c':
 +                if (index < 0 || index >= oc->nb_chapters) {
 +                    av_log(NULL, AV_LOG_FATAL, "Invalid chapter index %d in metadata specifier.\n", index);
 +                    exit_program(1);
 +                }
 +                m = &oc->chapters[index]->metadata;
 +                break;
 +            default:
 +                av_log(NULL, AV_LOG_FATAL, "Invalid metadata specifier %s.\n", o->metadata[i].specifier);
 +                exit_program(1);
 +            }
 +            av_dict_set(m, o->metadata[i].u.str, *val ? val : NULL, 0);
 +        }
 +    }
 +
 +    reset_options(o, 0);
 +}
 +
 +/* same option as mencoder */
 +static int opt_pass(const char *opt, const char *arg)
 +{
 +    do_pass = parse_number_or_die(opt, arg, OPT_INT, 1, 3);
 +    return 0;
 +}
 +
 +static int64_t getmaxrss(void)
 +{
 +#if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
 +    struct rusage rusage;
 +    getrusage(RUSAGE_SELF, &rusage);
 +    return (int64_t)rusage.ru_maxrss * 1024;
 +#elif HAVE_GETPROCESSMEMORYINFO
 +    HANDLE proc;
 +    PROCESS_MEMORY_COUNTERS memcounters;
 +    proc = GetCurrentProcess();
 +    memcounters.cb = sizeof(memcounters);
 +    GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
 +    return memcounters.PeakPagefileUsage;
 +#else
 +    return 0;
 +#endif
 +}
 +
 +static int opt_audio_qscale(OptionsContext *o, const char *opt, const char *arg)
 +{
 +    return parse_option(o, "q:a", arg, options);
 +}
 +
 +static void show_usage(void)
 +{
 +    av_log(NULL, AV_LOG_INFO, "Hyper fast Audio and Video encoder\n");
 +    av_log(NULL, AV_LOG_INFO, "usage: %s [options] [[infile options] -i infile]... {[outfile options] outfile}...\n", program_name);
 +    av_log(NULL, AV_LOG_INFO, "\n");
 +}
 +
 +static int opt_help(const char *opt, const char *arg)
 +{
 +    int flags = AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_ENCODING_PARAM;
 +    av_log_set_callback(log_callback_help);
 +    show_usage();
 +    show_help_options(options, "Main options:\n",
 +                      OPT_EXPERT | OPT_AUDIO | OPT_VIDEO | OPT_SUBTITLE | OPT_GRAB, 0);
 +    show_help_options(options, "\nAdvanced options:\n",
 +                      OPT_EXPERT | OPT_AUDIO | OPT_VIDEO | OPT_SUBTITLE | OPT_GRAB,
 +                      OPT_EXPERT);
 +    show_help_options(options, "\nVideo options:\n",
 +                      OPT_EXPERT | OPT_AUDIO | OPT_VIDEO | OPT_GRAB,
 +                      OPT_VIDEO);
 +    show_help_options(options, "\nAdvanced Video options:\n",
 +                      OPT_EXPERT | OPT_AUDIO | OPT_VIDEO | OPT_GRAB,
 +                      OPT_VIDEO | OPT_EXPERT);
 +    show_help_options(options, "\nAudio options:\n",
 +                      OPT_EXPERT | OPT_AUDIO | OPT_VIDEO | OPT_GRAB,
 +                      OPT_AUDIO);
 +    show_help_options(options, "\nAdvanced Audio options:\n",
 +                      OPT_EXPERT | OPT_AUDIO | OPT_VIDEO | OPT_GRAB,
 +                      OPT_AUDIO | OPT_EXPERT);
 +    show_help_options(options, "\nSubtitle options:\n",
 +                      OPT_SUBTITLE | OPT_GRAB,
 +                      OPT_SUBTITLE);
 +    show_help_options(options, "\nAudio/Video grab options:\n",
 +                      OPT_GRAB,
 +                      OPT_GRAB);
 +    printf("\n");
 +    show_help_children(avcodec_get_class(), flags);
 +    show_help_children(avformat_get_class(), flags);
 +    show_help_children(sws_get_class(), flags);
 +    show_help_children(swr_get_class(), AV_OPT_FLAG_AUDIO_PARAM);
 +
 +    return 0;
 +}
 +
 +static int opt_target(OptionsContext *o, const char *opt, const char *arg)
 +{
 +    enum { PAL, NTSC, FILM, UNKNOWN } norm = UNKNOWN;
 +    static const char *const frame_rates[] = { "25", "30000/1001", "24000/1001" };
 +
 +    if (!strncmp(arg, "pal-", 4)) {
 +        norm = PAL;
 +        arg += 4;
 +    } else if (!strncmp(arg, "ntsc-", 5)) {
 +        norm = NTSC;
 +        arg += 5;
 +    } else if (!strncmp(arg, "film-", 5)) {
 +        norm = FILM;
 +        arg += 5;
 +    } else {
 +        /* Try to determine PAL/NTSC by peeking in the input files */
 +        if (nb_input_files) {
 +            int i, j, fr;
 +            for (j = 0; j < nb_input_files; j++) {
 +                for (i = 0; i < input_files[j]->nb_streams; i++) {
 +                    AVCodecContext *c = input_files[j]->ctx->streams[i]->codec;
 +                    if (c->codec_type != AVMEDIA_TYPE_VIDEO)
 +                        continue;
 +                    fr = c->time_base.den * 1000 / c->time_base.num;
 +                    if (fr == 25000) {
 +                        norm = PAL;
 +                        break;
 +                    } else if ((fr == 29970) || (fr == 23976)) {
 +                        norm = NTSC;
 +                        break;
 +                    }
 +                }
 +                if (norm != UNKNOWN)
 +                    break;
 +            }
 +        }
 +        if (norm != UNKNOWN)
 +            av_log(NULL, AV_LOG_INFO, "Assuming %s for target.\n", norm == PAL ? "PAL" : "NTSC");
 +    }
 +
 +    if (norm == UNKNOWN) {
 +        av_log(NULL, AV_LOG_FATAL, "Could not determine norm (PAL/NTSC/NTSC-Film) for target.\n");
 +        av_log(NULL, AV_LOG_FATAL, "Please prefix target with \"pal-\", \"ntsc-\" or \"film-\",\n");
 +        av_log(NULL, AV_LOG_FATAL, "or set a framerate with \"-r xxx\".\n");
 +        exit_program(1);
 +    }
 +
 +    if (!strcmp(arg, "vcd")) {
 +        opt_video_codec(o, "c:v", "mpeg1video");
 +        opt_audio_codec(o, "c:a", "mp2");
 +        parse_option(o, "f", "vcd", options);
 +
 +        parse_option(o, "s", norm == PAL ? "352x288" : "352x240", options);
 +        parse_option(o, "r", frame_rates[norm], options);
 +        opt_default("g", norm == PAL ? "15" : "18");
 +
 +        opt_default("b:v", "1150000");
 +        opt_default("maxrate", "1150000");
 +        opt_default("minrate", "1150000");
 +        opt_default("bufsize", "327680"); // 40*1024*8;
 +
 +        opt_default("b:a", "224000");
 +        parse_option(o, "ar", "44100", options);
 +        parse_option(o, "ac", "2", options);
 +
 +        opt_default("packetsize", "2324");
 +        opt_default("muxrate", "1411200"); // 2352 * 75 * 8;
 +
 +        /* We have to offset the PTS, so that it is consistent with the SCR.
 +           SCR starts at 36000, but the first two packs contain only padding
 +           and the first pack from the other stream, respectively, may also have
 +           been written before.
 +           So the real data starts at SCR 36000+3*1200. */
 +        o->mux_preload = (36000 + 3 * 1200) / 90000.0; // 0.44
 +    } else if (!strcmp(arg, "svcd")) {
 +
 +        opt_video_codec(o, "c:v", "mpeg2video");
 +        opt_audio_codec(o, "c:a", "mp2");
 +        parse_option(o, "f", "svcd", options);
 +
 +        parse_option(o, "s", norm == PAL ? "480x576" : "480x480", options);
 +        parse_option(o, "r", frame_rates[norm], options);
 +        parse_option(o, "pix_fmt", "yuv420p", options);
 +        opt_default("g", norm == PAL ? "15" : "18");
 +
 +        opt_default("b:v", "2040000");
 +        opt_default("maxrate", "2516000");
 +        opt_default("minrate", "0"); // 1145000;
 +        opt_default("bufsize", "1835008"); // 224*1024*8;
 +        opt_default("scan_offset", "1");
 +
 +
 +        opt_default("b:a", "224000");
 +        parse_option(o, "ar", "44100", options);
 +
 +        opt_default("packetsize", "2324");
 +
 +    } else if (!strcmp(arg, "dvd")) {
 +
 +        opt_video_codec(o, "c:v", "mpeg2video");
 +        opt_audio_codec(o, "c:a", "ac3");
 +        parse_option(o, "f", "dvd", options);
 +
 +        parse_option(o, "s", norm == PAL ? "720x576" : "720x480", options);
 +        parse_option(o, "r", frame_rates[norm], options);
 +        parse_option(o, "pix_fmt", "yuv420p", options);
 +        opt_default("g", norm == PAL ? "15" : "18");
 +
 +        opt_default("b:v", "6000000");
 +        opt_default("maxrate", "9000000");
 +        opt_default("minrate", "0"); // 1500000;
 +        opt_default("bufsize", "1835008"); // 224*1024*8;
 +
 +        opt_default("packetsize", "2048");  // from www.mpucoder.com: DVD sectors contain 2048 bytes of data, this is also the size of one pack.
 +        opt_default("muxrate", "10080000"); // from mplex project: data_rate = 1260000. mux_rate = data_rate * 8
 +
 +        opt_default("b:a", "448000");
 +        parse_option(o, "ar", "48000", options);
 +
 +    } else if (!strncmp(arg, "dv", 2)) {
 +
 +        parse_option(o, "f", "dv", options);
 +
 +        parse_option(o, "s", norm == PAL ? "720x576" : "720x480", options);
 +        parse_option(o, "pix_fmt", !strncmp(arg, "dv50", 4) ? "yuv422p" :
 +                          norm == PAL ? "yuv420p" : "yuv411p", options);
 +        parse_option(o, "r", frame_rates[norm], options);
 +
 +        parse_option(o, "ar", "48000", options);
 +        parse_option(o, "ac", "2", options);
 +
 +    } else {
 +        av_log(NULL, AV_LOG_ERROR, "Unknown target: %s\n", arg);
 +        return AVERROR(EINVAL);
 +    }
 +    return 0;
 +}
 +
 +static int opt_vstats_file(const char *opt, const char *arg)
 +{
 +    av_free (vstats_filename);
 +    vstats_filename = av_strdup (arg);
 +    return 0;
 +}
 +
 +static int opt_vstats(const char *opt, const char *arg)
 +{
 +    char filename[40];
 +    time_t today2 = time(NULL);
 +    struct tm *today = localtime(&today2);
 +
 +    snprintf(filename, sizeof(filename), "vstats_%02d%02d%02d.log", today->tm_hour, today->tm_min,
 +             today->tm_sec);
 +    return opt_vstats_file(opt, filename);
 +}
 +
 +static int opt_video_frames(OptionsContext *o, const char *opt, const char *arg)
 +{
 +    return parse_option(o, "frames:v", arg, options);
 +}
 +
 +static int opt_audio_frames(OptionsContext *o, const char *opt, const char *arg)
 +{
 +    return parse_option(o, "frames:a", arg, options);
 +}
 +
 +static int opt_data_frames(OptionsContext *o, const char *opt, const char *arg)
 +{
 +    return parse_option(o, "frames:d", arg, options);
 +}
 +
 +static int opt_preset(OptionsContext *o, const char *opt, const char *arg)
 +{
 +    FILE *f=NULL;
 +    char filename[1000], line[1000], tmp_line[1000];
 +    const char *codec_name = *opt == 'v' ? video_codec_name :
 +                             *opt == 'a' ? audio_codec_name :
 +                                           subtitle_codec_name;
 +
 +    if (!(f = get_preset_file(filename, sizeof(filename), arg, *opt == 'f', codec_name))) {
 +        if(!strncmp(arg, "libx264-lossless", strlen("libx264-lossless"))){
 +            av_log(NULL, AV_LOG_FATAL, "Please use -preset <speed> -qp 0\n");
 +        }else
 +            av_log(NULL, AV_LOG_FATAL, "File for preset '%s' not found\n", arg);
 +        exit_program(1);
 +    }
 +
 +    while (fgets(line, sizeof(line), f)) {
 +        char *key = tmp_line, *value, *endptr;
 +
 +        if (strcspn(line, "#\n\r") == 0)
 +            continue;
 +        strcpy(tmp_line, line);
 +        if (!av_strtok(key,   "=",    &value) ||
 +            !av_strtok(value, "\r\n", &endptr)) {
 +            av_log(NULL, AV_LOG_FATAL, "%s: Invalid syntax: '%s'\n", filename, line);
 +            exit_program(1);
 +        }
 +        av_log(NULL, AV_LOG_DEBUG, "ffpreset[%s]: set '%s' = '%s'\n", filename, key, value);
 +
 +        if      (!strcmp(key, "acodec")) opt_audio_codec   (o, key, value);
 +        else if (!strcmp(key, "vcodec")) opt_video_codec   (o, key, value);
 +        else if (!strcmp(key, "scodec")) opt_subtitle_codec(o, key, value);
 +        else if (!strcmp(key, "dcodec")) opt_data_codec    (o, key, value);
 +        else if (opt_default(key, value) < 0) {
 +            av_log(NULL, AV_LOG_FATAL, "%s: Invalid option or argument: '%s', parsed as '%s' = '%s'\n",
 +                   filename, line, key, value);
 +            exit_program(1);
 +        }
 +    }
 +
 +    fclose(f);
 +
 +    return 0;
 +}
 +
 +static void log_callback_null(void *ptr, int level, const char *fmt, va_list vl)
 +{
 +}
 +
 +static int opt_passlogfile(const char *opt, const char *arg)
 +{
 +    pass_logfilename_prefix = arg;
 +#if CONFIG_LIBX264_ENCODER
 +    return opt_default(opt, arg);
 +#else
 +    return 0;
 +#endif
 +}
 +
 +static int opt_old2new(OptionsContext *o, const char *opt, const char *arg)
 +{
 +    char *s = av_asprintf("%s:%c", opt + 1, *opt);
 +    int ret = parse_option(o, s, arg, options);
 +    av_free(s);
 +    return ret;
 +}
 +
 +static int opt_bitrate(OptionsContext *o, const char *opt, const char *arg)
 +{
 +    if(!strcmp(opt, "b")){
 +        av_log(NULL, AV_LOG_WARNING, "Please use -b:a or -b:v, -b is ambiguous\n");
 +        return parse_option(o, "b:v", arg, options);
 +    }
 +    return opt_default(opt, arg);
 +}
 +
 +static int opt_qscale(OptionsContext *o, const char *opt, const char *arg)
 +{
 +    char *s;
 +    int ret;
 +    if(!strcmp(opt, "qscale")){
 +        av_log(NULL, AV_LOG_WARNING, "Please use -q:a or -q:v, -qscale is ambiguous\n");
 +        return parse_option(o, "q:v", arg, options);
 +    }
 +    s = av_asprintf("q%s", opt + 6);
 +    ret = parse_option(o, s, arg, options);
 +    av_free(s);
 +    return ret;
 +}
 +
 +static int opt_profile(OptionsContext *o, const char *opt, const char *arg)
 +{
 +    if(!strcmp(opt, "profile")){
 +        av_log(NULL, AV_LOG_WARNING, "Please use -profile:a or -profile:v, -profile is ambiguous\n");
 +        return parse_option(o, "profile:v", arg, options);
 +    }
 +    return opt_default(opt, arg);
 +}
 +
 +static int opt_video_filters(OptionsContext *o, const char *opt, const char *arg)
 +{
 +    return parse_option(o, "filter:v", arg, options);
 +}
 +
 +static int opt_audio_filters(OptionsContext *o, const char *opt, const char *arg)
 +{
 +    return parse_option(o, "filter:a", arg, options);
 +}
 +
 +static int opt_vsync(const char *opt, const char *arg)
 +{
 +    if      (!av_strcasecmp(arg, "cfr"))         video_sync_method = VSYNC_CFR;
 +    else if (!av_strcasecmp(arg, "vfr"))         video_sync_method = VSYNC_VFR;
 +    else if (!av_strcasecmp(arg, "passthrough")) video_sync_method = VSYNC_PASSTHROUGH;
 +    else if (!av_strcasecmp(arg, "drop"))        video_sync_method = VSYNC_DROP;
 +
 +    if (video_sync_method == VSYNC_AUTO)
 +        video_sync_method = parse_number_or_die("vsync", arg, OPT_INT, VSYNC_AUTO, VSYNC_VFR);
 +    return 0;
 +}
 +
 +static int opt_deinterlace(const char *opt, const char *arg)
 +{
 +    av_log(NULL, AV_LOG_WARNING, "-%s is deprecated, use -filter:v yadif instead\n", opt);
 +    do_deinterlace = 1;
 +    return 0;
 +}
 +
 +static int opt_timecode(OptionsContext *o, const char *opt, const char *arg)
 +{
 +    char *tcr = av_asprintf("timecode=%s", arg);
 +    int ret = parse_option(o, "metadata:g", tcr, options);
 +    if (ret >= 0)
 +        ret = opt_default("gop_timecode", arg);
 +    av_free(tcr);
 +    return ret;
 +}
 +
 +static void parse_cpuflags(int argc, char **argv, const OptionDef *options)
 +{
 +    int idx = locate_option(argc, argv, options, "cpuflags");
 +    if (idx && argv[idx + 1])
 +        opt_cpuflags("cpuflags", argv[idx + 1]);
 +}
 +
 +static int opt_channel_layout(OptionsContext *o, const char *opt, const char *arg)
 +{
 +    char layout_str[32];
 +    char *stream_str;
 +    char *ac_str;
 +    int ret, channels, ac_str_size;
 +    uint64_t layout;
 +
 +    layout = av_get_channel_layout(arg);
 +    if (!layout) {
 +        av_log(NULL, AV_LOG_ERROR, "Unknown channel layout: %s\n", arg);
 +        return AVERROR(EINVAL);
 +    }
 +    snprintf(layout_str, sizeof(layout_str), "%"PRIu64, layout);
 +    ret = opt_default(opt, layout_str);
 +    if (ret < 0)
 +        return ret;
 +
 +    /* set 'ac' option based on channel layout */
 +    channels = av_get_channel_layout_nb_channels(layout);
 +    snprintf(layout_str, sizeof(layout_str), "%d", channels);
 +    stream_str = strchr(opt, ':');
 +    ac_str_size = 3 + (stream_str ? strlen(stream_str) : 0);
 +    ac_str = av_mallocz(ac_str_size);
 +    if (!ac_str)
 +        return AVERROR(ENOMEM);
 +    av_strlcpy(ac_str, "ac", 3);
 +    if (stream_str)
 +        av_strlcat(ac_str, stream_str, ac_str_size);
 +    ret = parse_option(o, ac_str, layout_str, options);
 +    av_free(ac_str);
 +
 +    return ret;
 +}
 +
 +static int opt_filter_complex(const char *opt, const char *arg)
 +{
 +    filtergraphs = grow_array(filtergraphs, sizeof(*filtergraphs),
 +                              &nb_filtergraphs, nb_filtergraphs + 1);
 +    if (!(filtergraphs[nb_filtergraphs - 1] = av_mallocz(sizeof(*filtergraphs[0]))))
 +        return AVERROR(ENOMEM);
 +    filtergraphs[nb_filtergraphs - 1]->index       = nb_filtergraphs - 1;
 +    filtergraphs[nb_filtergraphs - 1]->graph_desc = arg;
 +    return 0;
 +}
 +
 +static int opt_progress(const char *opt, const char *arg)
 +{
 +    AVIOContext *avio = NULL;
 +    int ret;
 +
 +    if (!strcmp(arg, "-"))
 +        arg = "pipe:";
 +    ret = avio_open2(&avio, arg, AVIO_FLAG_WRITE, &int_cb, NULL);
 +    if (ret < 0) {
 +        av_log(0, AV_LOG_ERROR, "Failed to open progress URL \"%s\": %s\n",
 +               arg, av_err2str(ret));
 +        return ret;
 +    }
 +    progress_avio = avio;
 +    return 0;
 +}
 +
 +#define OFFSET(x) offsetof(OptionsContext, x)
++static const OptionDef real_options[] = {
 +    /* main options */
 +#include "cmdutils_common_opts.h"
 +    { "f", HAS_ARG | OPT_STRING | OPT_OFFSET, {.off = OFFSET(format)}, "force format", "fmt" },
 +    { "i", HAS_ARG | OPT_FUNC2, {(void*)opt_input_file}, "input file name", "filename" },
 +    { "y", OPT_BOOL, {(void*)&file_overwrite}, "overwrite output files" },
 +    { "n", OPT_BOOL, {(void*)&no_file_overwrite}, "do not overwrite output files" },
 +    { "c", HAS_ARG | OPT_STRING | OPT_SPEC, {.off = OFFSET(codec_names)}, "codec name", "codec" },
 +    { "codec", HAS_ARG | OPT_STRING | OPT_SPEC, {.off = OFFSET(codec_names)}, "codec name", "codec" },
 +    { "pre", HAS_ARG | OPT_STRING | OPT_SPEC, {.off = OFFSET(presets)}, "preset name", "preset" },
 +    { "map", HAS_ARG | OPT_EXPERT | OPT_FUNC2, {(void*)opt_map}, "set input stream mapping", "[-]input_file_id[:stream_specifier][,sync_file_id[:stream_specifier]]" },
 +    { "map_channel", HAS_ARG | OPT_EXPERT | OPT_FUNC2, {(void*)opt_map_channel}, "map an audio channel from one stream to another", "file.stream.channel[:syncfile.syncstream]" },
 +    { "map_metadata", HAS_ARG | OPT_STRING | OPT_SPEC, {.off = OFFSET(metadata_map)}, "set metadata information of outfile from infile",
 +      "outfile[,metadata]:infile[,metadata]" },
 +    { "map_chapters",  OPT_INT | HAS_ARG | OPT_EXPERT | OPT_OFFSET, {.off = OFFSET(chapters_input_file)},  "set chapters mapping", "input_file_index" },
 +    { "t", HAS_ARG | OPT_TIME | OPT_OFFSET, {.off = OFFSET(recording_time)}, "record or transcode \"duration\" seconds of audio/video", "duration" },
 +    { "fs", HAS_ARG | OPT_INT64 | OPT_OFFSET, {.off = OFFSET(limit_filesize)}, "set the limit file size in bytes", "limit_size" }, //
 +    { "ss", HAS_ARG | OPT_TIME | OPT_OFFSET, {.off = OFFSET(start_time)}, "set the start time offset", "time_off" },
 +    { "itsoffset", HAS_ARG | OPT_TIME | OPT_OFFSET, {.off = OFFSET(input_ts_offset)}, "set the input ts offset", "time_off" },
 +    { "itsscale", HAS_ARG | OPT_DOUBLE | OPT_SPEC, {.off = OFFSET(ts_scale)}, "set the input ts scale", "scale" },
 +    { "timestamp", HAS_ARG | OPT_FUNC2, {(void*)opt_recording_timestamp}, "set the recording timestamp ('now' to set the current time)", "time" },
 +    { "metadata", HAS_ARG | OPT_STRING | OPT_SPEC, {.off = OFFSET(metadata)}, "add metadata", "string=string" },
 +    { "dframes", HAS_ARG | OPT_FUNC2, {(void*)opt_data_frames}, "set the number of data frames to record", "number" },
 +    { "benchmark", OPT_BOOL | OPT_EXPERT, {(void*)&do_benchmark},
 +      "add timings for benchmarking" },
 +    { "benchmark_all", OPT_BOOL | OPT_EXPERT, {(void*)&do_benchmark_all},
 +      "add timings for each task" },
 +    { "progress", HAS_ARG | OPT_EXPERT, {(void*)opt_progress},
 +      "write program-readable progress information", "url" },
 +    { "stdin", OPT_BOOL | OPT_EXPERT, {(void*)&stdin_interaction},
 +      "enable or disable interaction on standard input" },
 +    { "timelimit", HAS_ARG, {(void*)opt_timelimit}, "set max runtime in seconds", "limit" },
 +    { "dump", OPT_BOOL | OPT_EXPERT, {(void*)&do_pkt_dump},
 +      "dump each input packet" },
 +    { "hex", OPT_BOOL | OPT_EXPERT, {(void*)&do_hex_dump},
 +      "when dumping packets, also dump the payload" },
 +    { "re", OPT_BOOL | OPT_EXPERT | OPT_OFFSET, {.off = OFFSET(rate_emu)}, "read input at native frame rate", "" },
 +    { "target", HAS_ARG | OPT_FUNC2, {(void*)opt_target}, "specify target file type (\"vcd\", \"svcd\", \"dvd\", \"dv\", \"dv50\", \"pal-vcd\", \"ntsc-svcd\", ...)", "type" },
 +    { "vsync", HAS_ARG | OPT_EXPERT, {(void*)opt_vsync}, "video sync method", "" },
 +    { "async", HAS_ARG | OPT_INT | OPT_EXPERT, {(void*)&audio_sync_method}, "audio sync method", "" },
 +    { "adrift_threshold", HAS_ARG | OPT_FLOAT | OPT_EXPERT, {(void*)&audio_drift_threshold}, "audio drift threshold", "threshold" },
 +    { "copyts", OPT_BOOL | OPT_EXPERT, {(void*)&copy_ts}, "copy timestamps" },
 +    { "copytb", HAS_ARG | OPT_INT | OPT_EXPERT, {(void*)&copy_tb}, "copy input stream time base when stream copying", "mode" },
 +    { "shortest", OPT_BOOL | OPT_EXPERT, {(void*)&opt_shortest}, "finish encoding within shortest input" }, //
 +    { "dts_delta_threshold", HAS_ARG | OPT_FLOAT | OPT_EXPERT, {(void*)&dts_delta_threshold}, "timestamp discontinuity delta threshold", "threshold" },
 +    { "dts_error_threshold", HAS_ARG | OPT_FLOAT | OPT_EXPERT, {(void*)&dts_error_threshold}, "timestamp error delta threshold", "threshold" },
 +    { "xerror", OPT_BOOL, {(void*)&exit_on_error}, "exit on error", "error" },
 +    { "copyinkf", OPT_BOOL | OPT_EXPERT | OPT_SPEC, {.off = OFFSET(copy_initial_nonkeyframes)}, "copy initial non-keyframes" },
 +    { "frames", OPT_INT64 | HAS_ARG | OPT_SPEC, {.off = OFFSET(max_frames)}, "set the number of frames to record", "number" },
 +    { "tag",   OPT_STRING | HAS_ARG | OPT_SPEC, {.off = OFFSET(codec_tags)}, "force codec tag/fourcc", "fourcc/tag" },
 +    { "q", HAS_ARG | OPT_EXPERT | OPT_DOUBLE | OPT_SPEC, {.off = OFFSET(qscale)}, "use fixed quality scale (VBR)", "q" },
 +    { "qscale", HAS_ARG | OPT_EXPERT | OPT_FUNC2, {(void*)opt_qscale}, "use fixed quality scale (VBR)", "q" },
 +    { "profile", HAS_ARG | OPT_EXPERT | OPT_FUNC2, {(void*)opt_profile}, "set profile", "profile" },
 +    { "filter", HAS_ARG | OPT_STRING | OPT_SPEC, {.off = OFFSET(filters)}, "set stream filterchain", "filter_list" },
 +    { "filter_complex", HAS_ARG | OPT_EXPERT, {(void*)opt_filter_complex}, "create a complex filtergraph", "graph_description" },
 +    { "stats", OPT_BOOL, {&print_stats}, "print progress report during encoding", },
 +    { "attach", HAS_ARG | OPT_FUNC2, {(void*)opt_attach}, "add an attachment to the output file", "filename" },
 +    { "dump_attachment", HAS_ARG | OPT_STRING | OPT_SPEC, {.off = OFFSET(dump_attachment)}, "extract an attachment into a file", "filename" },
 +    { "debug_ts", OPT_BOOL | OPT_EXPERT, {&debug_ts}, "print timestamp debugging info" },
 +
 +    /* video options */
 +    { "vframes", HAS_ARG | OPT_VIDEO | OPT_FUNC2, {(void*)opt_video_frames}, "set the number of video frames to record", "number" },
 +    { "r", HAS_ARG | OPT_VIDEO | OPT_STRING | OPT_SPEC, {.off = OFFSET(frame_rates)}, "set frame rate (Hz value, fraction or abbreviation)", "rate" },
 +    { "s", HAS_ARG | OPT_VIDEO | OPT_STRING | OPT_SPEC, {.off = OFFSET(frame_sizes)}, "set frame size (WxH or abbreviation)", "size" },
 +    { "aspect", HAS_ARG | OPT_VIDEO | OPT_STRING | OPT_SPEC, {.off = OFFSET(frame_aspect_ratios)}, "set aspect ratio (4:3, 16:9 or 1.3333, 1.7777)", "aspect" },
 +    { "pix_fmt", HAS_ARG | OPT_EXPERT | OPT_VIDEO | OPT_STRING | OPT_SPEC, {.off = OFFSET(frame_pix_fmts)}, "set pixel format", "format" },
 +    { "bits_per_raw_sample", OPT_INT | HAS_ARG | OPT_VIDEO, {(void*)&frame_bits_per_raw_sample}, "set the number of bits per raw sample", "number" },
 +    { "croptop",  HAS_ARG | OPT_VIDEO, {(void*)opt_frame_crop}, "Removed, use the crop filter instead", "size" },
 +    { "cropbottom", HAS_ARG | OPT_VIDEO, {(void*)opt_frame_crop}, "Removed, use the crop filter instead", "size" },
 +    { "cropleft", HAS_ARG | OPT_VIDEO, {(void*)opt_frame_crop}, "Removed, use the crop filter instead", "size" },
 +    { "cropright", HAS_ARG | OPT_VIDEO, {(void*)opt_frame_crop}, "Removed, use the crop filter instead", "size" },
 +    { "padtop", HAS_ARG | OPT_VIDEO, {(void*)opt_pad}, "Removed, use the pad filter instead", "size" },
 +    { "padbottom", HAS_ARG | OPT_VIDEO, {(void*)opt_pad}, "Removed, use the pad filter instead", "size" },
 +    { "padleft", HAS_ARG | OPT_VIDEO, {(void*)opt_pad}, "Removed, use the pad filter instead", "size" },
 +    { "padright", HAS_ARG | OPT_VIDEO, {(void*)opt_pad}, "Removed, use the pad filter instead", "size" },
 +    { "padcolor", HAS_ARG | OPT_VIDEO, {(void*)opt_pad}, "Removed, use the pad filter instead", "color" },
 +    { "intra", OPT_BOOL | OPT_EXPERT | OPT_VIDEO, {(void*)&intra_only}, "deprecated use -g 1"},
 +    { "vn", OPT_BOOL | OPT_VIDEO | OPT_OFFSET, {.off = OFFSET(video_disable)}, "disable video" },
 +    { "vdt", OPT_INT | HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)&video_discard}, "discard threshold", "n" },
 +    { "rc_override", HAS_ARG | OPT_EXPERT | OPT_VIDEO | OPT_STRING | OPT_SPEC, {.off = OFFSET(rc_overrides)}, "rate control override for specific intervals", "override" },
 +    { "vcodec", HAS_ARG | OPT_VIDEO | OPT_FUNC2, {(void*)opt_video_codec}, "force video codec ('copy' to copy stream)", "codec" },
 +    { "sameq", OPT_BOOL | OPT_VIDEO, {(void*)&same_quant}, "use same quantizer as source (implies VBR)" },
 +    { "same_quant", OPT_BOOL | OPT_VIDEO, {(void*)&same_quant},
 +      "use same quantizer as source (implies VBR)" },
 +    { "timecode", HAS_ARG | OPT_VIDEO | OPT_FUNC2, {(void*)opt_timecode}, "set initial TimeCode value.", "hh:mm:ss[:;.]ff" },
 +    { "pass", HAS_ARG | OPT_VIDEO, {(void*)opt_pass}, "select the pass number (1 or 2)", "n" },
 +    { "passlogfile", HAS_ARG | OPT_VIDEO, {(void*)&opt_passlogfile}, "select two pass log file name prefix", "prefix" },
 +    { "deinterlace", OPT_EXPERT | OPT_VIDEO, {(void*)opt_deinterlace},
 +      "this option is deprecated, use the yadif filter instead" },
 +    { "psnr", OPT_BOOL | OPT_EXPERT | OPT_VIDEO, {(void*)&do_psnr}, "calculate PSNR of compressed frames" },
 +    { "vstats", OPT_EXPERT | OPT_VIDEO, {(void*)&opt_vstats}, "dump video coding statistics to file" },
 +    { "vstats_file", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_vstats_file}, "dump video coding statistics to file", "file" },
 +    { "vf", HAS_ARG | OPT_VIDEO | OPT_FUNC2, {(void*)opt_video_filters}, "video filters", "filter list" },
 +    { "intra_matrix", HAS_ARG | OPT_EXPERT | OPT_VIDEO | OPT_STRING | OPT_SPEC, {.off = OFFSET(intra_matrices)}, "specify intra matrix coeffs", "matrix" },
 +    { "inter_matrix", HAS_ARG | OPT_EXPERT | OPT_VIDEO | OPT_STRING | OPT_SPEC, {.off = OFFSET(inter_matrices)}, "specify inter matrix coeffs", "matrix" },
 +    { "top", HAS_ARG | OPT_EXPERT | OPT_VIDEO | OPT_INT| OPT_SPEC, {.off = OFFSET(top_field_first)}, "top=1/bottom=0/auto=-1 field first", "" },
 +    { "dc", OPT_INT | HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)&intra_dc_precision}, "intra_dc_precision", "precision" },
 +    { "vtag", HAS_ARG | OPT_EXPERT | OPT_VIDEO | OPT_FUNC2, {(void*)opt_old2new}, "force video tag/fourcc", "fourcc/tag" },
 +    { "qphist", OPT_BOOL | OPT_EXPERT | OPT_VIDEO, { (void *)&qp_hist }, "show QP histogram" },
 +    { "force_fps", OPT_BOOL | OPT_EXPERT | OPT_VIDEO | OPT_SPEC, {.off = OFFSET(force_fps)}, "force the selected framerate, disable the best supported framerate selection" },
 +    { "streamid", HAS_ARG | OPT_EXPERT | OPT_FUNC2, {(void*)opt_streamid}, "set the value of an outfile streamid", "streamIndex:value" },
 +    { "force_key_frames", OPT_STRING | HAS_ARG | OPT_EXPERT | OPT_VIDEO | OPT_SPEC, {.off = OFFSET(forced_key_frames)}, "force key frames at specified timestamps", "timestamps" },
 +    { "b", HAS_ARG | OPT_VIDEO | OPT_FUNC2, {(void*)opt_bitrate}, "video bitrate (please use -b:v)", "bitrate" },
 +
 +    /* audio options */
 +    { "aframes", HAS_ARG | OPT_AUDIO | OPT_FUNC2, {(void*)opt_audio_frames}, "set the number of audio frames to record", "number" },
 +    { "aq", HAS_ARG | OPT_AUDIO | OPT_FUNC2, {(void*)opt_audio_qscale}, "set audio quality (codec-specific)", "quality", },
 +    { "ar", HAS_ARG | OPT_AUDIO | OPT_INT | OPT_SPEC, {.off = OFFSET(audio_sample_rate)}, "set audio sampling rate (in Hz)", "rate" },
 +    { "ac", HAS_ARG | OPT_AUDIO | OPT_INT | OPT_SPEC, {.off = OFFSET(audio_channels)}, "set number of audio channels", "channels" },
 +    { "an", OPT_BOOL | OPT_AUDIO | OPT_OFFSET, {.off = OFFSET(audio_disable)}, "disable audio" },
 +    { "acodec", HAS_ARG | OPT_AUDIO | OPT_FUNC2, {(void*)opt_audio_codec}, "force audio codec ('copy' to copy stream)", "codec" },
 +    { "atag", HAS_ARG | OPT_EXPERT | OPT_AUDIO | OPT_FUNC2, {(void*)opt_old2new}, "force audio tag/fourcc", "fourcc/tag" },
 +    { "vol", OPT_INT | HAS_ARG | OPT_AUDIO, {(void*)&audio_volume}, "change audio volume (256=normal)" , "volume" }, //
 +    { "sample_fmt", HAS_ARG | OPT_EXPERT | OPT_AUDIO | OPT_SPEC | OPT_STRING, {.off = OFFSET(sample_fmts)}, "set sample format", "format" },
 +    { "channel_layout", HAS_ARG | OPT_EXPERT | OPT_AUDIO | OPT_FUNC2, {(void*)opt_channel_layout}, "set channel layout", "layout" },
 +    { "af", HAS_ARG | OPT_AUDIO | OPT_FUNC2, {(void*)opt_audio_filters}, "audio filters", "filter list" },
 +
 +    /* subtitle options */
 +    { "sn", OPT_BOOL | OPT_SUBTITLE | OPT_OFFSET, {.off = OFFSET(subtitle_disable)}, "disable subtitle" },
 +    { "scodec", HAS_ARG | OPT_SUBTITLE | OPT_FUNC2, {(void*)opt_subtitle_codec}, "force subtitle codec ('copy' to copy stream)", "codec" },
 +    { "stag", HAS_ARG | OPT_EXPERT | OPT_SUBTITLE | OPT_FUNC2, {(void*)opt_old2new}, "force subtitle tag/fourcc", "fourcc/tag" },
 +
 +    /* grab options */
 +    { "vc", HAS_ARG | OPT_EXPERT | OPT_VIDEO | OPT_GRAB, {(void*)opt_video_channel}, "deprecated, use -channel", "channel" },
 +    { "tvstd", HAS_ARG | OPT_EXPERT | OPT_VIDEO | OPT_GRAB, {(void*)opt_video_standard}, "deprecated, use -standard", "standard" },
 +    { "isync", OPT_BOOL | OPT_EXPERT | OPT_GRAB, {(void*)&input_sync}, "sync read on input", "" },
 +
 +    /* muxer options */
 +    { "muxdelay", OPT_FLOAT | HAS_ARG | OPT_EXPERT   | OPT_OFFSET, {.off = OFFSET(mux_max_delay)}, "set the maximum demux-decode delay", "seconds" },
 +    { "muxpreload", OPT_FLOAT | HAS_ARG | OPT_EXPERT | OPT_OFFSET, {.off = OFFSET(mux_preload)},   "set the initial demux-decode delay", "seconds" },
 +
 +    { "bsf", HAS_ARG | OPT_STRING | OPT_SPEC, {.off = OFFSET(bitstream_filters)}, "A comma-separated list of bitstream filters", "bitstream_filters" },
 +    { "absf", HAS_ARG | OPT_AUDIO | OPT_EXPERT| OPT_FUNC2, {(void*)opt_old2new}, "deprecated", "audio bitstream_filters" },
 +    { "vbsf", HAS_ARG | OPT_VIDEO | OPT_EXPERT| OPT_FUNC2, {(void*)opt_old2new}, "deprecated", "video bitstream_filters" },
 +
 +    { "apre", HAS_ARG | OPT_AUDIO | OPT_EXPERT| OPT_FUNC2, {(void*)opt_preset}, "set the audio options to the indicated preset", "preset" },
 +    { "vpre", HAS_ARG | OPT_VIDEO | OPT_EXPERT| OPT_FUNC2, {(void*)opt_preset}, "set the video options to the indicated preset", "preset" },
 +    { "spre", HAS_ARG | OPT_SUBTITLE | OPT_EXPERT| OPT_FUNC2, {(void*)opt_preset}, "set the subtitle options to the indicated preset", "preset" },
 +    { "fpre", HAS_ARG | OPT_EXPERT| OPT_FUNC2, {(void*)opt_preset}, "set options from indicated preset file", "filename" },
 +    /* data codec support */
 +    { "dcodec", HAS_ARG | OPT_DATA | OPT_FUNC2, {(void*)opt_data_codec}, "force data codec ('copy' to copy stream)", "codec" },
 +    { "dn", OPT_BOOL | OPT_VIDEO | OPT_OFFSET, {.off = OFFSET(data_disable)}, "disable data" },
 +
 +    { "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, {(void*)opt_default}, "generic catch all option", "" },
 +    { NULL, },
 +};
 +
 +int main(int argc, char **argv)
 +{
 +    OptionsContext o = { 0 };
 +    int64_t ti;
 +
++    options = real_options;
 +    reset_options(&o, 0);
 +
 +    av_log_set_flags(AV_LOG_SKIP_REPEATED);
 +    parse_loglevel(argc, argv, options);
 +
 +    if(argc>1 && !strcmp(argv[1], "-d")){
 +        run_as_daemon=1;
 +        av_log_set_callback(log_callback_null);
 +        argc--;
 +        argv++;
 +    }
 +
 +    avcodec_register_all();
 +#if CONFIG_AVDEVICE
 +    avdevice_register_all();
 +#endif
 +    avfilter_register_all();
 +    av_register_all();
 +    avformat_network_init();
 +
 +    show_banner(argc, argv, options);
 +
 +    term_init();
 +
 +    parse_cpuflags(argc, argv, options);
 +
 +    /* parse options */
 +    parse_options(&o, argc, argv, options, opt_output_file);
 +
 +    if (nb_output_files <= 0 && nb_input_files == 0) {
 +        show_usage();
 +        av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
 +        exit_program(1);
 +    }
 +
 +    /* file converter / grab */
 +    if (nb_output_files <= 0) {
 +        av_log(NULL, AV_LOG_FATAL, "At least one output file must be specified\n");
 +        exit_program(1);
 +    }
 +
 +    if (nb_input_files == 0) {
 +        av_log(NULL, AV_LOG_FATAL, "At least one input file must be specified\n");
 +        exit_program(1);
 +    }
 +
 +    current_time = ti = getutime();
 +    if (transcode() < 0)
 +        exit_program(1);
 +    ti = getutime() - ti;
 +    if (do_benchmark) {
 +        int maxrss = getmaxrss() / 1024;
 +        printf("bench: utime=%0.3fs maxrss=%ikB\n", ti / 1000000.0, maxrss);
 +    }
 +
 +    exit_program(0);
 +    return 0;
 +}
diff --cc ffprobe.c
index e261db1,0000000..e14de3b
mode 100644,000000..100644
--- /dev/null
+++ b/ffprobe.c
@@@ -1,2213 -1,0 +1,2214 @@@
- static const OptionDef options[];
 +/*
 + * Copyright (c) 2007-2010 Stefano Sabatini
 + *
 + * This file is part of FFmpeg.
 + *
 + * FFmpeg is free software; you can redistribute it and/or
 + * modify it under the terms of the GNU Lesser General Public
 + * License as published by the Free Software Foundation; either
 + * version 2.1 of the License, or (at your option) any later version.
 + *
 + * FFmpeg is distributed in the hope that it will be useful,
 + * but WITHOUT ANY WARRANTY; without even the implied warranty of
 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 + * Lesser General Public License for more details.
 + *
 + * You should have received a copy of the GNU Lesser General Public
 + * License along with FFmpeg; if not, write to the Free Software
 + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 + */
 +
 +/**
 + * @file
 + * simple media prober based on the FFmpeg libraries
 + */
 +
 +#include "config.h"
 +#include "version.h"
 +
 +#include "libavformat/avformat.h"
 +#include "libavcodec/avcodec.h"
 +#include "libavutil/avstring.h"
 +#include "libavutil/bprint.h"
 +#include "libavutil/opt.h"
 +#include "libavutil/pixdesc.h"
 +#include "libavutil/dict.h"
 +#include "libavutil/timecode.h"
 +#include "libavdevice/avdevice.h"
 +#include "libswscale/swscale.h"
 +#include "libswresample/swresample.h"
 +#include "libpostproc/postprocess.h"
 +#include "cmdutils.h"
 +
 +const char program_name[] = "ffprobe";
 +const int program_birth_year = 2007;
 +
 +static int do_count_frames = 0;
 +static int do_count_packets = 0;
 +static int do_read_frames  = 0;
 +static int do_read_packets = 0;
 +static int do_show_error   = 0;
 +static int do_show_format  = 0;
 +static int do_show_frames  = 0;
 +static AVDictionary *fmt_entries_to_show = NULL;
 +static int do_show_packets = 0;
 +static int do_show_streams = 0;
 +static int do_show_data    = 0;
 +static int do_show_program_version  = 0;
 +static int do_show_library_versions = 0;
 +
 +static int show_value_unit              = 0;
 +static int use_value_prefix             = 0;
 +static int use_byte_value_binary_prefix = 0;
 +static int use_value_sexagesimal_format = 0;
 +static int show_private_data            = 1;
 +
 +static char *print_format;
 +
- static const OptionDef options[] = {
++static const OptionDef *options;
 +
 +/* FFprobe context */
 +static const char *input_filename;
 +static AVInputFormat *iformat = NULL;
 +
 +static const char *const binary_unit_prefixes [] = { "", "Ki", "Mi", "Gi", "Ti", "Pi" };
 +static const char *const decimal_unit_prefixes[] = { "", "K" , "M" , "G" , "T" , "P"  };
 +
 +static const char unit_second_str[]         = "s"    ;
 +static const char unit_hertz_str[]          = "Hz"   ;
 +static const char unit_byte_str[]           = "byte" ;
 +static const char unit_bit_per_second_str[] = "bit/s";
 +static uint64_t *nb_streams_packets;
 +static uint64_t *nb_streams_frames;
 +
 +void av_noreturn exit_program(int ret)
 +{
 +    av_dict_free(&fmt_entries_to_show);
 +    exit(ret);
 +}
 +
 +struct unit_value {
 +    union { double d; long long int i; } val;
 +    const char *unit;
 +};
 +
 +static char *value_string(char *buf, int buf_size, struct unit_value uv)
 +{
 +    double vald;
 +    int show_float = 0;
 +
 +    if (uv.unit == unit_second_str) {
 +        vald = uv.val.d;
 +        show_float = 1;
 +    } else {
 +        vald = uv.val.i;
 +    }
 +
 +    if (uv.unit == unit_second_str && use_value_sexagesimal_format) {
 +        double secs;
 +        int hours, mins;
 +        secs  = vald;
 +        mins  = (int)secs / 60;
 +        secs  = secs - mins * 60;
 +        hours = mins / 60;
 +        mins %= 60;
 +        snprintf(buf, buf_size, "%d:%02d:%09.6f", hours, mins, secs);
 +    } else {
 +        const char *prefix_string = "";
 +        int l;
 +
 +        if (use_value_prefix && vald > 1) {
 +            long long int index;
 +
 +            if (uv.unit == unit_byte_str && use_byte_value_binary_prefix) {
 +                index = (long long int) (log(vald)/log(2)) / 10;
 +                index = av_clip(index, 0, FF_ARRAY_ELEMS(binary_unit_prefixes) - 1);
 +                vald /= pow(2, index * 10);
 +                prefix_string = binary_unit_prefixes[index];
 +            } else {
 +                index = (long long int) (log10(vald)) / 3;
 +                index = av_clip(index, 0, FF_ARRAY_ELEMS(decimal_unit_prefixes) - 1);
 +                vald /= pow(10, index * 3);
 +                prefix_string = decimal_unit_prefixes[index];
 +            }
 +        }
 +
 +        if (show_float || (use_value_prefix && vald != (long long int)vald))
 +            l = snprintf(buf, buf_size, "%f", vald);
 +        else
 +            l = snprintf(buf, buf_size, "%lld", (long long int)vald);
 +        snprintf(buf+l, buf_size-l, "%s%s%s", *prefix_string || show_value_unit ? " " : "",
 +                 prefix_string, show_value_unit ? uv.unit : "");
 +    }
 +
 +    return buf;
 +}
 +
 +/* WRITERS API */
 +
 +typedef struct WriterContext WriterContext;
 +
 +#define WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS 1
 +#define WRITER_FLAG_PUT_PACKETS_AND_FRAMES_IN_SAME_CHAPTER 2
 +
 +typedef struct Writer {
 +    int priv_size;                  ///< private size for the writer context
 +    const char *name;
 +
 +    int  (*init)  (WriterContext *wctx, const char *args, void *opaque);
 +    void (*uninit)(WriterContext *wctx);
 +
 +    void (*print_header)(WriterContext *ctx);
 +    void (*print_footer)(WriterContext *ctx);
 +
 +    void (*print_chapter_header)(WriterContext *wctx, const char *);
 +    void (*print_chapter_footer)(WriterContext *wctx, const char *);
 +    void (*print_section_header)(WriterContext *wctx, const char *);
 +    void (*print_section_footer)(WriterContext *wctx, const char *);
 +    void (*print_integer)       (WriterContext *wctx, const char *, long long int);
 +    void (*print_rational)      (WriterContext *wctx, AVRational *q, char *sep);
 +    void (*print_string)        (WriterContext *wctx, const char *, const char *);
 +    void (*show_tags)           (WriterContext *wctx, AVDictionary *dict);
 +    int flags;                  ///< a combination or WRITER_FLAG_*
 +} Writer;
 +
 +struct WriterContext {
 +    const AVClass *class;           ///< class of the writer
 +    const Writer *writer;           ///< the Writer of which this is an instance
 +    char *name;                     ///< name of this writer instance
 +    void *priv;                     ///< private data for use by the filter
 +    unsigned int nb_item;           ///< number of the item printed in the given section, starting at 0
 +    unsigned int nb_section;        ///< number of the section printed in the given section sequence, starting at 0
 +    unsigned int nb_section_packet; ///< number of the packet section in case we are in "packets_and_frames" section
 +    unsigned int nb_section_frame;  ///< number of the frame  section in case we are in "packets_and_frames" section
 +    unsigned int nb_section_packet_frame; ///< nb_section_packet or nb_section_frame according if is_packets_and_frames
 +    unsigned int nb_chapter;        ///< number of the chapter, starting at 0
 +
 +    int multiple_sections;          ///< tells if the current chapter can contain multiple sections
 +    int is_fmt_chapter;             ///< tells if the current chapter is "format", required by the print_format_entry option
 +    int is_packets_and_frames;      ///< tells if the current section is "packets_and_frames"
 +};
 +
 +static const char *writer_get_name(void *p)
 +{
 +    WriterContext *wctx = p;
 +    return wctx->writer->name;
 +}
 +
 +static const AVClass writer_class = {
 +    "Writer",
 +    writer_get_name,
 +    NULL,
 +    LIBAVUTIL_VERSION_INT,
 +};
 +
 +static void writer_close(WriterContext **wctx)
 +{
 +    if (!*wctx)
 +        return;
 +
 +    if ((*wctx)->writer->uninit)
 +        (*wctx)->writer->uninit(*wctx);
 +    av_freep(&((*wctx)->priv));
 +    av_freep(wctx);
 +}
 +
 +static int writer_open(WriterContext **wctx, const Writer *writer,
 +                       const char *args, void *opaque)
 +{
 +    int ret = 0;
 +
 +    if (!(*wctx = av_malloc(sizeof(WriterContext)))) {
 +        ret = AVERROR(ENOMEM);
 +        goto fail;
 +    }
 +
 +    if (!((*wctx)->priv = av_mallocz(writer->priv_size))) {
 +        ret = AVERROR(ENOMEM);
 +        goto fail;
 +    }
 +
 +    (*wctx)->class = &writer_class;
 +    (*wctx)->writer = writer;
 +    if ((*wctx)->writer->init)
 +        ret = (*wctx)->writer->init(*wctx, args, opaque);
 +    if (ret < 0)
 +        goto fail;
 +
 +    return 0;
 +
 +fail:
 +    writer_close(wctx);
 +    return ret;
 +}
 +
 +static inline void writer_print_header(WriterContext *wctx)
 +{
 +    if (wctx->writer->print_header)
 +        wctx->writer->print_header(wctx);
 +    wctx->nb_chapter = 0;
 +}
 +
 +static inline void writer_print_footer(WriterContext *wctx)
 +{
 +    if (wctx->writer->print_footer)
 +        wctx->writer->print_footer(wctx);
 +}
 +
 +static inline void writer_print_chapter_header(WriterContext *wctx,
 +                                               const char *chapter)
 +{
 +    wctx->nb_section =
 +    wctx->nb_section_packet = wctx->nb_section_frame =
 +    wctx->nb_section_packet_frame = 0;
 +    wctx->is_packets_and_frames = !strcmp(chapter, "packets_and_frames");
 +    wctx->multiple_sections = !strcmp(chapter, "packets") || !strcmp(chapter, "frames" ) ||
 +                              wctx->is_packets_and_frames ||
 +                              !strcmp(chapter, "streams") || !strcmp(chapter, "library_versions");
 +    wctx->is_fmt_chapter = !strcmp(chapter, "format");
 +
 +    if (wctx->writer->print_chapter_header)
 +        wctx->writer->print_chapter_header(wctx, chapter);
 +}
 +
 +static inline void writer_print_chapter_footer(WriterContext *wctx,
 +                                               const char *chapter)
 +{
 +    if (wctx->writer->print_chapter_footer)
 +        wctx->writer->print_chapter_footer(wctx, chapter);
 +    wctx->nb_chapter++;
 +}
 +
 +static inline void writer_print_section_header(WriterContext *wctx,
 +                                               const char *section)
 +{
 +    if (wctx->is_packets_and_frames)
 +        wctx->nb_section_packet_frame = !strcmp(section, "packet") ? wctx->nb_section_packet
 +                                                                   : wctx->nb_section_frame;
 +    if (wctx->writer->print_section_header)
 +        wctx->writer->print_section_header(wctx, section);
 +    wctx->nb_item = 0;
 +}
 +
 +static inline void writer_print_section_footer(WriterContext *wctx,
 +                                               const char *section)
 +{
 +    if (wctx->writer->print_section_footer)
 +        wctx->writer->print_section_footer(wctx, section);
 +    if (wctx->is_packets_and_frames) {
 +        if (!strcmp(section, "packet")) wctx->nb_section_packet++;
 +        else                            wctx->nb_section_frame++;
 +    }
 +    wctx->nb_section++;
 +}
 +
 +static inline void writer_print_integer(WriterContext *wctx,
 +                                        const char *key, long long int val)
 +{
 +    if (!wctx->is_fmt_chapter || !fmt_entries_to_show || av_dict_get(fmt_entries_to_show, key, NULL, 0)) {
 +        wctx->writer->print_integer(wctx, key, val);
 +        wctx->nb_item++;
 +    }
 +}
 +
 +static inline void writer_print_rational(WriterContext *wctx,
 +                                         const char *key, AVRational q, char sep)
 +{
 +    AVBPrint buf;
 +    av_bprint_init(&buf, 0, AV_BPRINT_SIZE_AUTOMATIC);
 +    av_bprintf(&buf, "%d%c%d", q.num, sep, q.den);
 +    wctx->writer->print_string(wctx, key, buf.str);
 +    wctx->nb_item++;
 +}
 +
 +static inline void writer_print_string(WriterContext *wctx,
 +                                       const char *key, const char *val, int opt)
 +{
 +    if (opt && !(wctx->writer->flags & WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS))
 +        return;
 +    if (!wctx->is_fmt_chapter || !fmt_entries_to_show || av_dict_get(fmt_entries_to_show, key, NULL, 0)) {
 +        wctx->writer->print_string(wctx, key, val);
 +        wctx->nb_item++;
 +    }
 +}
 +
 +static void writer_print_time(WriterContext *wctx, const char *key,
 +                              int64_t ts, const AVRational *time_base, int is_duration)
 +{
 +    char buf[128];
 +
 +    if (!wctx->is_fmt_chapter || !fmt_entries_to_show || av_dict_get(fmt_entries_to_show, key, NULL, 0)) {
 +        if ((!is_duration && ts == AV_NOPTS_VALUE) || (is_duration && ts == 0)) {
 +            writer_print_string(wctx, key, "N/A", 1);
 +        } else {
 +            double d = ts * av_q2d(*time_base);
 +            value_string(buf, sizeof(buf), (struct unit_value){.val.d=d, .unit=unit_second_str});
 +            writer_print_string(wctx, key, buf, 0);
 +        }
 +    }
 +}
 +
 +static void writer_print_ts(WriterContext *wctx, const char *key, int64_t ts, int is_duration)
 +{
 +    if ((!is_duration && ts == AV_NOPTS_VALUE) || (is_duration && ts == 0)) {
 +        writer_print_string(wctx, key, "N/A", 1);
 +    } else {
 +        writer_print_integer(wctx, key, ts);
 +    }
 +}
 +
 +static inline void writer_show_tags(WriterContext *wctx, AVDictionary *dict)
 +{
 +    wctx->writer->show_tags(wctx, dict);
 +}
 +
 +static void writer_print_data(WriterContext *wctx, const char *name,
 +                              uint8_t *data, int size)
 +{
 +    AVBPrint bp;
 +    int offset = 0, l, i;
 +
 +    av_bprint_init(&bp, 0, AV_BPRINT_SIZE_UNLIMITED);
 +    av_bprintf(&bp, "\n");
 +    while (size) {
 +        av_bprintf(&bp, "%08x: ", offset);
 +        l = FFMIN(size, 16);
 +        for (i = 0; i < l; i++) {
 +            av_bprintf(&bp, "%02x", data[i]);
 +            if (i & 1)
 +                av_bprintf(&bp, " ");
 +        }
 +        av_bprint_chars(&bp, ' ', 41 - 2 * i - i / 2);
 +        for (i = 0; i < l; i++)
 +            av_bprint_chars(&bp, data[i] - 32U < 95 ? data[i] : '.', 1);
 +        av_bprintf(&bp, "\n");
 +        offset += l;
 +        data   += l;
 +        size   -= l;
 +    }
 +    writer_print_string(wctx, name, bp.str, 0);
 +    av_bprint_finalize(&bp, NULL);
 +}
 +
 +#define MAX_REGISTERED_WRITERS_NB 64
 +
 +static const Writer *registered_writers[MAX_REGISTERED_WRITERS_NB + 1];
 +
 +static int writer_register(const Writer *writer)
 +{
 +    static int next_registered_writer_idx = 0;
 +
 +    if (next_registered_writer_idx == MAX_REGISTERED_WRITERS_NB)
 +        return AVERROR(ENOMEM);
 +
 +    registered_writers[next_registered_writer_idx++] = writer;
 +    return 0;
 +}
 +
 +static const Writer *writer_get_by_name(const char *name)
 +{
 +    int i;
 +
 +    for (i = 0; registered_writers[i]; i++)
 +        if (!strcmp(registered_writers[i]->name, name))
 +            return registered_writers[i];
 +
 +    return NULL;
 +}
 +
 +
 +/* WRITERS */
 +
 +/* Default output */
 +
 +typedef struct DefaultContext {
 +    const AVClass *class;
 +    int nokey;
 +    int noprint_wrappers;
 +} DefaultContext;
 +
 +#define OFFSET(x) offsetof(DefaultContext, x)
 +
 +static const AVOption default_options[] = {
 +    { "noprint_wrappers", "do not print headers and footers", OFFSET(noprint_wrappers), AV_OPT_TYPE_INT, {.dbl=0}, 0, 1 },
 +    { "nw",               "do not print headers and footers", OFFSET(noprint_wrappers), AV_OPT_TYPE_INT, {.dbl=0}, 0, 1 },
 +    { "nokey",          "force no key printing",     OFFSET(nokey),          AV_OPT_TYPE_INT, {.dbl=0}, 0, 1 },
 +    { "nk",             "force no key printing",     OFFSET(nokey),          AV_OPT_TYPE_INT, {.dbl=0}, 0, 1 },
 +    {NULL},
 +};
 +
 +static const char *default_get_name(void *ctx)
 +{
 +    return "default";
 +}
 +
 +static const AVClass default_class = {
 +    "DefaultContext",
 +    default_get_name,
 +    default_options
 +};
 +
 +static av_cold int default_init(WriterContext *wctx, const char *args, void *opaque)
 +{
 +    DefaultContext *def = wctx->priv;
 +    int err;
 +
 +    def->class = &default_class;
 +    av_opt_set_defaults(def);
 +
 +    if (args &&
 +        (err = (av_set_options_string(def, args, "=", ":"))) < 0) {
 +        av_log(wctx, AV_LOG_ERROR, "Error parsing options string: '%s'\n", args);
 +        return err;
 +    }
 +
 +    return 0;
 +}
 +
 +static void default_print_footer(WriterContext *wctx)
 +{
 +    DefaultContext *def = wctx->priv;
 +
 +    if (!def->noprint_wrappers)
 +        printf("\n");
 +}
 +
 +static void default_print_chapter_header(WriterContext *wctx, const char *chapter)
 +{
 +    DefaultContext *def = wctx->priv;
 +
 +    if (!def->noprint_wrappers && wctx->nb_chapter)
 +        printf("\n");
 +}
 +
 +/* lame uppercasing routine, assumes the string is lower case ASCII */
 +static inline char *upcase_string(char *dst, size_t dst_size, const char *src)
 +{
 +    int i;
 +    for (i = 0; src[i] && i < dst_size-1; i++)
 +        dst[i] = av_toupper(src[i]);
 +    dst[i] = 0;
 +    return dst;
 +}
 +
 +static void default_print_section_header(WriterContext *wctx, const char *section)
 +{
 +    DefaultContext *def = wctx->priv;
 +    char buf[32];
 +
 +    if (wctx->nb_section)
 +        printf("\n");
 +    if (!def->noprint_wrappers)
 +        printf("[%s]\n", upcase_string(buf, sizeof(buf), section));
 +}
 +
 +static void default_print_section_footer(WriterContext *wctx, const char *section)
 +{
 +    DefaultContext *def = wctx->priv;
 +    char buf[32];
 +
 +    if (!def->noprint_wrappers)
 +        printf("[/%s]", upcase_string(buf, sizeof(buf), section));
 +}
 +
 +static void default_print_str(WriterContext *wctx, const char *key, const char *value)
 +{
 +    DefaultContext *def = wctx->priv;
 +    if (!def->nokey)
 +        printf("%s=", key);
 +    printf("%s\n", value);
 +}
 +
 +static void default_print_int(WriterContext *wctx, const char *key, long long int value)
 +{
 +    DefaultContext *def = wctx->priv;
 +
 +    if (!def->nokey)
 +        printf("%s=", key);
 +    printf("%lld\n", value);
 +}
 +
 +static void default_show_tags(WriterContext *wctx, AVDictionary *dict)
 +{
 +    AVDictionaryEntry *tag = NULL;
 +    while ((tag = av_dict_get(dict, "", tag, AV_DICT_IGNORE_SUFFIX))) {
 +        if (!fmt_entries_to_show || (tag->key && av_dict_get(fmt_entries_to_show, tag->key, NULL, 0)))
 +            printf("TAG:");
 +        writer_print_string(wctx, tag->key, tag->value, 0);
 +    }
 +}
 +
 +static const Writer default_writer = {
 +    .name                  = "default",
 +    .priv_size             = sizeof(DefaultContext),
 +    .init                  = default_init,
 +    .print_footer          = default_print_footer,
 +    .print_chapter_header  = default_print_chapter_header,
 +    .print_section_header  = default_print_section_header,
 +    .print_section_footer  = default_print_section_footer,
 +    .print_integer         = default_print_int,
 +    .print_string          = default_print_str,
 +    .show_tags             = default_show_tags,
 +    .flags = WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS,
 +};
 +
 +/* Compact output */
 +
 +/**
 + * Apply C-language-like string escaping.
 + */
 +static const char *c_escape_str(AVBPrint *dst, const char *src, const char sep, void *log_ctx)
 +{
 +    const char *p;
 +
 +    for (p = src; *p; p++) {
 +        switch (*p) {
 +        case '\b': av_bprintf(dst, "%s", "\\b");  break;
 +        case '\f': av_bprintf(dst, "%s", "\\f");  break;
 +        case '\n': av_bprintf(dst, "%s", "\\n");  break;
 +        case '\r': av_bprintf(dst, "%s", "\\r");  break;
 +        case '\\': av_bprintf(dst, "%s", "\\\\"); break;
 +        default:
 +            if (*p == sep)
 +                av_bprint_chars(dst, '\\', 1);
 +            av_bprint_chars(dst, *p, 1);
 +        }
 +    }
 +    return dst->str;
 +}
 +
 +/**
 + * Quote fields containing special characters, check RFC4180.
 + */
 +static const char *csv_escape_str(AVBPrint *dst, const char *src, const char sep, void *log_ctx)
 +{
 +    const char *p;
 +    int quote = 0;
 +
 +    /* check if input needs quoting */
 +    for (p = src; *p; p++)
 +        if (*p == '"' || *p == sep || *p == '\n' || *p == '\r')
 +            quote = 1;
 +
 +    if (quote)
 +        av_bprint_chars(dst, '\"', 1);
 +
 +    for (p = src; *p; p++) {
 +        if (*p == '"')
 +            av_bprint_chars(dst, '\"', 1);
 +        av_bprint_chars(dst, *p, 1);
 +    }
 +    if (quote)
 +        av_bprint_chars(dst, '\"', 1);
 +    return dst->str;
 +}
 +
 +static const char *none_escape_str(AVBPrint *dst, const char *src, const char sep, void *log_ctx)
 +{
 +    return src;
 +}
 +
 +typedef struct CompactContext {
 +    const AVClass *class;
 +    char *item_sep_str;
 +    char item_sep;
 +    int nokey;
 +    char *escape_mode_str;
 +    const char * (*escape_str)(AVBPrint *dst, const char *src, const char sep, void *log_ctx);
 +} CompactContext;
 +
 +#undef OFFSET
 +#define OFFSET(x) offsetof(CompactContext, x)
 +
 +static const AVOption compact_options[]= {
 +    {"item_sep", "set item separator",    OFFSET(item_sep_str),    AV_OPT_TYPE_STRING, {.str="|"},  CHAR_MIN, CHAR_MAX },
 +    {"s",        "set item separator",    OFFSET(item_sep_str),    AV_OPT_TYPE_STRING, {.str="|"},  CHAR_MIN, CHAR_MAX },
 +    {"nokey",    "force no key printing", OFFSET(nokey),           AV_OPT_TYPE_INT,    {.dbl=0},    0,        1        },
 +    {"nk",       "force no key printing", OFFSET(nokey),           AV_OPT_TYPE_INT,    {.dbl=0},    0,        1        },
 +    {"escape",   "set escape mode",       OFFSET(escape_mode_str), AV_OPT_TYPE_STRING, {.str="c"},  CHAR_MIN, CHAR_MAX },
 +    {"e",        "set escape mode",       OFFSET(escape_mode_str), AV_OPT_TYPE_STRING, {.str="c"},  CHAR_MIN, CHAR_MAX },
 +    {NULL},
 +};
 +
 +static const char *compact_get_name(void *ctx)
 +{
 +    return "compact";
 +}
 +
 +static const AVClass compact_class = {
 +    "CompactContext",
 +    compact_get_name,
 +    compact_options
 +};
 +
 +static av_cold int compact_init(WriterContext *wctx, const char *args, void *opaque)
 +{
 +    CompactContext *compact = wctx->priv;
 +    int err;
 +
 +    compact->class = &compact_class;
 +    av_opt_set_defaults(compact);
 +
 +    if (args &&
 +        (err = (av_set_options_string(compact, args, "=", ":"))) < 0) {
 +        av_log(wctx, AV_LOG_ERROR, "Error parsing options string: '%s'\n", args);
 +        return err;
 +    }
 +    if (strlen(compact->item_sep_str) != 1) {
 +        av_log(wctx, AV_LOG_ERROR, "Item separator '%s' specified, but must contain a single character\n",
 +               compact->item_sep_str);
 +        return AVERROR(EINVAL);
 +    }
 +    compact->item_sep = compact->item_sep_str[0];
 +
 +    if      (!strcmp(compact->escape_mode_str, "none")) compact->escape_str = none_escape_str;
 +    else if (!strcmp(compact->escape_mode_str, "c"   )) compact->escape_str = c_escape_str;
 +    else if (!strcmp(compact->escape_mode_str, "csv" )) compact->escape_str = csv_escape_str;
 +    else {
 +        av_log(wctx, AV_LOG_ERROR, "Unknown escape mode '%s'\n", compact->escape_mode_str);
 +        return AVERROR(EINVAL);
 +    }
 +
 +    return 0;
 +}
 +
 +static av_cold void compact_uninit(WriterContext *wctx)
 +{
 +    CompactContext *compact = wctx->priv;
 +
 +    av_freep(&compact->item_sep_str);
 +    av_freep(&compact->escape_mode_str);
 +}
 +
 +static void compact_print_section_header(WriterContext *wctx, const char *section)
 +{
 +    CompactContext *compact = wctx->priv;
 +
 +    printf("%s%c", section, compact->item_sep);
 +}
 +
 +static void compact_print_section_footer(WriterContext *wctx, const char *section)
 +{
 +    printf("\n");
 +}
 +
 +static void compact_print_str(WriterContext *wctx, const char *key, const char *value)
 +{
 +    CompactContext *compact = wctx->priv;
 +    AVBPrint buf;
 +
 +    if (wctx->nb_item) printf("%c", compact->item_sep);
 +    if (!compact->nokey)
 +        printf("%s=", key);
 +    av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);
 +    printf("%s", compact->escape_str(&buf, value, compact->item_sep, wctx));
 +    av_bprint_finalize(&buf, NULL);
 +}
 +
 +static void compact_print_int(WriterContext *wctx, const char *key, long long int value)
 +{
 +    CompactContext *compact = wctx->priv;
 +
 +    if (wctx->nb_item) printf("%c", compact->item_sep);
 +    if (!compact->nokey)
 +        printf("%s=", key);
 +    printf("%lld", value);
 +}
 +
 +static void compact_show_tags(WriterContext *wctx, AVDictionary *dict)
 +{
 +    CompactContext *compact = wctx->priv;
 +    AVDictionaryEntry *tag = NULL;
 +    AVBPrint buf;
 +
 +    av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);
 +    while ((tag = av_dict_get(dict, "", tag, AV_DICT_IGNORE_SUFFIX))) {
 +        if (wctx->nb_item) printf("%c", compact->item_sep);
 +        if (!compact->nokey) {
 +            av_bprint_clear(&buf);
 +            printf("tag:%s=", compact->escape_str(&buf, tag->key, compact->item_sep, wctx));
 +        }
 +        av_bprint_clear(&buf);
 +        printf("%s", compact->escape_str(&buf, tag->value, compact->item_sep, wctx));
 +    }
 +    av_bprint_finalize(&buf, NULL);
 +}
 +
 +static const Writer compact_writer = {
 +    .name                 = "compact",
 +    .priv_size            = sizeof(CompactContext),
 +    .init                 = compact_init,
 +    .uninit               = compact_uninit,
 +    .print_section_header = compact_print_section_header,
 +    .print_section_footer = compact_print_section_footer,
 +    .print_integer        = compact_print_int,
 +    .print_string         = compact_print_str,
 +    .show_tags            = compact_show_tags,
 +    .flags = WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS,
 +};
 +
 +/* CSV output */
 +
 +static av_cold int csv_init(WriterContext *wctx, const char *args, void *opaque)
 +{
 +    return compact_init(wctx, "item_sep=,:nokey=1:escape=csv", opaque);
 +}
 +
 +static const Writer csv_writer = {
 +    .name                 = "csv",
 +    .priv_size            = sizeof(CompactContext),
 +    .init                 = csv_init,
 +    .uninit               = compact_uninit,
 +    .print_section_header = compact_print_section_header,
 +    .print_section_footer = compact_print_section_footer,
 +    .print_integer        = compact_print_int,
 +    .print_string         = compact_print_str,
 +    .show_tags            = compact_show_tags,
 +    .flags = WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS,
 +};
 +
 +/* Flat output */
 +
 +typedef struct FlatContext {
 +    const AVClass *class;
 +    const char *section, *chapter;
 +    const char *sep_str;
 +    char sep;
 +    int hierarchical;
 +} FlatContext;
 +
 +#undef OFFSET
 +#define OFFSET(x) offsetof(FlatContext, x)
 +
 +static const AVOption flat_options[]= {
 +    {"sep_char", "set separator",    OFFSET(sep_str),    AV_OPT_TYPE_STRING, {.str="."},  CHAR_MIN, CHAR_MAX },
 +    {"s",        "set separator",    OFFSET(sep_str),    AV_OPT_TYPE_STRING, {.str="."},  CHAR_MIN, CHAR_MAX },
 +    {"hierarchical", "specify if the section specification should be hierarchical", OFFSET(hierarchical), AV_OPT_TYPE_INT, {.dbl=1}, 0, 1 },
 +    {"h",           "specify if the section specification should be hierarchical", OFFSET(hierarchical), AV_OPT_TYPE_INT, {.dbl=1}, 0, 1 },
 +    {NULL},
 +};
 +
 +static const char *flat_get_name(void *ctx)
 +{
 +    return "flat";
 +}
 +
 +static const AVClass flat_class = {
 +    "FlatContext",
 +    flat_get_name,
 +    flat_options
 +};
 +
 +static av_cold int flat_init(WriterContext *wctx, const char *args, void *opaque)
 +{
 +    FlatContext *flat = wctx->priv;
 +    int err;
 +
 +    flat->class = &flat_class;
 +    av_opt_set_defaults(flat);
 +
 +    if (args &&
 +        (err = (av_set_options_string(flat, args, "=", ":"))) < 0) {
 +        av_log(wctx, AV_LOG_ERROR, "Error parsing options string: '%s'\n", args);
 +        return err;
 +    }
 +    if (strlen(flat->sep_str) != 1) {
 +        av_log(wctx, AV_LOG_ERROR, "Item separator '%s' specified, but must contain a single character\n",
 +               flat->sep_str);
 +        return AVERROR(EINVAL);
 +    }
 +    flat->sep = flat->sep_str[0];
 +    return 0;
 +}
 +
 +static const char *flat_escape_key_str(AVBPrint *dst, const char *src, const char sep)
 +{
 +    const char *p;
 +
 +    for (p = src; *p; p++) {
 +        if (!((*p >= '0' && *p <= '9') ||
 +              (*p >= 'a' && *p <= 'z') ||
 +              (*p >= 'A' && *p <= 'Z')))
 +            av_bprint_chars(dst, '_', 1);
 +        else
 +            av_bprint_chars(dst, *p, 1);
 +    }
 +    return dst->str;
 +}
 +
 +static const char *flat_escape_value_str(AVBPrint *dst, const char *src)
 +{
 +    const char *p;
 +
 +    for (p = src; *p; p++) {
 +        switch (*p) {
 +        case '\n': av_bprintf(dst, "%s", "\\n");  break;
 +        case '\r': av_bprintf(dst, "%s", "\\r");  break;
 +        case '\\': av_bprintf(dst, "%s", "\\\\"); break;
 +        case '"':  av_bprintf(dst, "%s", "\\\""); break;
 +        case '`':  av_bprintf(dst, "%s", "\\`");  break;
 +        case '$':  av_bprintf(dst, "%s", "\\$");  break;
 +        default:   av_bprint_chars(dst, *p, 1);   break;
 +        }
 +    }
 +    return dst->str;
 +}
 +
 +static void flat_print_chapter_header(WriterContext *wctx, const char *chapter)
 +{
 +    FlatContext *flat = wctx->priv;
 +    flat->chapter = chapter;
 +}
 +
 +static void flat_print_section_header(WriterContext *wctx, const char *section)
 +{
 +    FlatContext *flat = wctx->priv;
 +    flat->section = section;
 +}
 +
 +static void flat_print_section(WriterContext *wctx)
 +{
 +    FlatContext *flat = wctx->priv;
 +    int n = wctx->is_packets_and_frames ? wctx->nb_section_packet_frame
 +                                        : wctx->nb_section;
 +
 +    if (flat->hierarchical && wctx->multiple_sections)
 +        printf("%s%c", flat->chapter, flat->sep);
 +    printf("%s%c", flat->section, flat->sep);
 +    if (wctx->multiple_sections)
 +        printf("%d%c", n, flat->sep);
 +}
 +
 +static void flat_print_int(WriterContext *wctx, const char *key, long long int value)
 +{
 +    flat_print_section(wctx);
 +    printf("%s=%lld\n", key, value);
 +}
 +
 +static void flat_print_str(WriterContext *wctx, const char *key, const char *value)
 +{
 +    FlatContext *flat = wctx->priv;
 +    AVBPrint buf;
 +
 +    flat_print_section(wctx);
 +    av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);
 +    printf("%s=", flat_escape_key_str(&buf, key, flat->sep));
 +    av_bprint_clear(&buf);
 +    printf("\"%s\"\n", flat_escape_value_str(&buf, value));
 +    av_bprint_finalize(&buf, NULL);
 +}
 +
 +static void flat_show_tags(WriterContext *wctx, AVDictionary *dict)
 +{
 +    FlatContext *flat = wctx->priv;
 +    AVBPrint buf;
 +    AVDictionaryEntry *tag = NULL;
 +
 +    av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);
 +    while ((tag = av_dict_get(dict, "", tag, AV_DICT_IGNORE_SUFFIX))) {
 +        flat_print_section(wctx);
 +        av_bprint_clear(&buf);
 +        printf("tags%c%s=", flat->sep, flat_escape_key_str(&buf, tag->key, flat->sep));
 +        av_bprint_clear(&buf);
 +        printf("\"%s\"\n", flat_escape_value_str(&buf, tag->value));
 +    }
 +    av_bprint_finalize(&buf, NULL);
 +}
 +
 +static const Writer flat_writer = {
 +    .name                  = "flat",
 +    .priv_size             = sizeof(FlatContext),
 +    .init                  = flat_init,
 +    .print_chapter_header  = flat_print_chapter_header,
 +    .print_section_header  = flat_print_section_header,
 +    .print_integer         = flat_print_int,
 +    .print_string          = flat_print_str,
 +    .show_tags             = flat_show_tags,
 +    .flags = WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS|WRITER_FLAG_PUT_PACKETS_AND_FRAMES_IN_SAME_CHAPTER,
 +};
 +
 +/* INI format output */
 +
 +typedef struct {
 +    const AVClass *class;
 +    AVBPrint chapter_name, section_name;
 +    int hierarchical;
 +} INIContext;
 +
 +#undef OFFSET
 +#define OFFSET(x) offsetof(INIContext, x)
 +
 +static const AVOption ini_options[] = {
 +    {"hierarchical", "specify if the section specification should be hierarchical", OFFSET(hierarchical), AV_OPT_TYPE_INT, {.dbl=1}, 0, 1 },
 +    {"h",           "specify if the section specification should be hierarchical", OFFSET(hierarchical), AV_OPT_TYPE_INT, {.dbl=1}, 0, 1 },
 +    {NULL},
 +};
 +
 +static const char *ini_get_name(void *ctx)
 +{
 +    return "ini";
 +}
 +
 +static const AVClass ini_class = {
 +    "INIContext",
 +    ini_get_name,
 +    ini_options
 +};
 +
 +static av_cold int ini_init(WriterContext *wctx, const char *args, void *opaque)
 +{
 +    INIContext *ini = wctx->priv;
 +    int err;
 +
 +    av_bprint_init(&ini->chapter_name, 1, AV_BPRINT_SIZE_UNLIMITED);
 +    av_bprint_init(&ini->section_name, 1, AV_BPRINT_SIZE_UNLIMITED);
 +
 +    ini->class = &ini_class;
 +    av_opt_set_defaults(ini);
 +
 +    if (args && (err = av_set_options_string(ini, args, "=", ":")) < 0) {
 +        av_log(wctx, AV_LOG_ERROR, "Error parsing options string: '%s'\n", args);
 +        return err;
 +    }
 +
 +    return 0;
 +}
 +
 +static av_cold void ini_uninit(WriterContext *wctx)
 +{
 +    INIContext *ini = wctx->priv;
 +    av_bprint_finalize(&ini->chapter_name, NULL);
 +    av_bprint_finalize(&ini->section_name, NULL);
 +}
 +
 +static void ini_print_header(WriterContext *wctx)
 +{
 +    printf("# ffprobe output\n\n");
 +}
 +
 +static char *ini_escape_str(AVBPrint *dst, const char *src)
 +{
 +    int i = 0;
 +    char c = 0;
 +
 +    while (c = src[i++]) {
 +        switch (c) {
 +        case '\b': av_bprintf(dst, "%s", "\\b"); break;
 +        case '\f': av_bprintf(dst, "%s", "\\f"); break;
 +        case '\n': av_bprintf(dst, "%s", "\\n"); break;
 +        case '\r': av_bprintf(dst, "%s", "\\r"); break;
 +        case '\t': av_bprintf(dst, "%s", "\\t"); break;
 +        case '\\':
 +        case '#' :
 +        case '=' :
 +        case ':' : av_bprint_chars(dst, '\\', 1);
 +        default:
 +            if ((unsigned char)c < 32)
 +                av_bprintf(dst, "\\x00%02x", c & 0xff);
 +            else
 +                av_bprint_chars(dst, c, 1);
 +            break;
 +        }
 +    }
 +    return dst->str;
 +}
 +
 +static void ini_print_chapter_header(WriterContext *wctx, const char *chapter)
 +{
 +    INIContext *ini = wctx->priv;
 +
 +    av_bprint_clear(&ini->chapter_name);
 +    av_bprintf(&ini->chapter_name, "%s", chapter);
 +
 +    if (wctx->nb_chapter)
 +        printf("\n");
 +}
 +
 +static void ini_print_section_header(WriterContext *wctx, const char *section)
 +{
 +    INIContext *ini = wctx->priv;
 +    int n = wctx->is_packets_and_frames ? wctx->nb_section_packet_frame
 +                                        : wctx->nb_section;
 +    if (wctx->nb_section)
 +        printf("\n");
 +    av_bprint_clear(&ini->section_name);
 +
 +    if (ini->hierarchical && wctx->multiple_sections)
 +        av_bprintf(&ini->section_name, "%s.", ini->chapter_name.str);
 +    av_bprintf(&ini->section_name, "%s", section);
 +
 +    if (wctx->multiple_sections)
 +        av_bprintf(&ini->section_name, ".%d", n);
 +    printf("[%s]\n", ini->section_name.str);
 +}
 +
 +static void ini_print_str(WriterContext *wctx, const char *key, const char *value)
 +{
 +    AVBPrint buf;
 +
 +    av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);
 +    printf("%s=", ini_escape_str(&buf, key));
 +    av_bprint_clear(&buf);
 +    printf("%s\n", ini_escape_str(&buf, value));
 +    av_bprint_finalize(&buf, NULL);
 +}
 +
 +static void ini_print_int(WriterContext *wctx, const char *key, long long int value)
 +{
 +    printf("%s=%lld\n", key, value);
 +}
 +
 +static void ini_show_tags(WriterContext *wctx, AVDictionary *dict)
 +{
 +    INIContext *ini = wctx->priv;
 +    AVDictionaryEntry *tag = NULL;
 +    int is_first = 1;
 +
 +    while ((tag = av_dict_get(dict, "", tag, AV_DICT_IGNORE_SUFFIX))) {
 +        if (is_first) {
 +            printf("\n[%s.tags]\n", ini->section_name.str);
 +            is_first = 0;
 +        }
 +        writer_print_string(wctx, tag->key, tag->value, 0);
 +    }
 +}
 +
 +static const Writer ini_writer = {
 +    .name                  = "ini",
 +    .priv_size             = sizeof(INIContext),
 +    .init                  = ini_init,
 +    .uninit                = ini_uninit,
 +    .print_header          = ini_print_header,
 +    .print_chapter_header  = ini_print_chapter_header,
 +    .print_section_header  = ini_print_section_header,
 +    .print_integer         = ini_print_int,
 +    .print_string          = ini_print_str,
 +    .show_tags             = ini_show_tags,
 +    .flags = WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS|WRITER_FLAG_PUT_PACKETS_AND_FRAMES_IN_SAME_CHAPTER,
 +};
 +
 +/* JSON output */
 +
 +typedef struct {
 +    const AVClass *class;
 +    int indent_level;
 +    int compact;
 +    const char *item_sep, *item_start_end;
 +} JSONContext;
 +
 +#undef OFFSET
 +#define OFFSET(x) offsetof(JSONContext, x)
 +
 +static const AVOption json_options[]= {
 +    { "compact", "enable compact output", OFFSET(compact), AV_OPT_TYPE_INT, {.dbl=0}, 0, 1 },
 +    { "c",       "enable compact output", OFFSET(compact), AV_OPT_TYPE_INT, {.dbl=0}, 0, 1 },
 +    { NULL }
 +};
 +
 +static const char *json_get_name(void *ctx)
 +{
 +    return "json";
 +}
 +
 +static const AVClass json_class = {
 +    "JSONContext",
 +    json_get_name,
 +    json_options
 +};
 +
 +static av_cold int json_init(WriterContext *wctx, const char *args, void *opaque)
 +{
 +    JSONContext *json = wctx->priv;
 +    int err;
 +
 +    json->class = &json_class;
 +    av_opt_set_defaults(json);
 +
 +    if (args &&
 +        (err = (av_set_options_string(json, args, "=", ":"))) < 0) {
 +        av_log(wctx, AV_LOG_ERROR, "Error parsing options string: '%s'\n", args);
 +        return err;
 +    }
 +
 +    json->item_sep       = json->compact ? ", " : ",\n";
 +    json->item_start_end = json->compact ? " "  : "\n";
 +
 +    return 0;
 +}
 +
 +static const char *json_escape_str(AVBPrint *dst, const char *src, void *log_ctx)
 +{
 +    static const char json_escape[] = {'"', '\\', '\b', '\f', '\n', '\r', '\t', 0};
 +    static const char json_subst[]  = {'"', '\\',  'b',  'f',  'n',  'r',  't', 0};
 +    const char *p;
 +
 +    for (p = src; *p; p++) {
 +        char *s = strchr(json_escape, *p);
 +        if (s) {
 +            av_bprint_chars(dst, '\\', 1);
 +            av_bprint_chars(dst, json_subst[s - json_escape], 1);
 +        } else if ((unsigned char)*p < 32) {
 +            av_bprintf(dst, "\\u00%02x", *p & 0xff);
 +        } else {
 +            av_bprint_chars(dst, *p, 1);
 +        }
 +    }
 +    return dst->str;
 +}
 +
 +static void json_print_header(WriterContext *wctx)
 +{
 +    JSONContext *json = wctx->priv;
 +    printf("{");
 +    json->indent_level++;
 +}
 +
 +static void json_print_footer(WriterContext *wctx)
 +{
 +    JSONContext *json = wctx->priv;
 +    json->indent_level--;
 +    printf("\n}\n");
 +}
 +
 +#define JSON_INDENT() printf("%*c", json->indent_level * 4, ' ')
 +
 +static void json_print_chapter_header(WriterContext *wctx, const char *chapter)
 +{
 +    JSONContext *json = wctx->priv;
 +    AVBPrint buf;
 +
 +    if (wctx->nb_chapter)
 +        printf(",");
 +    printf("\n");
 +    if (wctx->multiple_sections) {
 +        JSON_INDENT();
 +        av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);
 +        printf("\"%s\": [\n", json_escape_str(&buf, chapter, wctx));
 +        av_bprint_finalize(&buf, NULL);
 +        json->indent_level++;
 +    }
 +}
 +
 +static void json_print_chapter_footer(WriterContext *wctx, const char *chapter)
 +{
 +    JSONContext *json = wctx->priv;
 +
 +    if (wctx->multiple_sections) {
 +        printf("\n");
 +        json->indent_level--;
 +        JSON_INDENT();
 +        printf("]");
 +    }
 +}
 +
 +static void json_print_section_header(WriterContext *wctx, const char *section)
 +{
 +    JSONContext *json = wctx->priv;
 +
 +    if (wctx->nb_section)
 +        printf(",\n");
 +    JSON_INDENT();
 +    if (!wctx->multiple_sections)
 +        printf("\"%s\": ", section);
 +    printf("{%s", json->item_start_end);
 +    json->indent_level++;
 +    /* this is required so the parser can distinguish between packets and frames */
 +    if (wctx->is_packets_and_frames) {
 +        if (!json->compact)
 +            JSON_INDENT();
 +        printf("\"type\": \"%s\"%s", section, json->item_sep);
 +    }
 +}
 +
 +static void json_print_section_footer(WriterContext *wctx, const char *section)
 +{
 +    JSONContext *json = wctx->priv;
 +
 +    printf("%s", json->item_start_end);
 +    json->indent_level--;
 +    if (!json->compact)
 +        JSON_INDENT();
 +    printf("}");
 +}
 +
 +static inline void json_print_item_str(WriterContext *wctx,
 +                                       const char *key, const char *value)
 +{
 +    AVBPrint buf;
 +
 +    av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);
 +    printf("\"%s\":", json_escape_str(&buf, key,   wctx));
 +    av_bprint_clear(&buf);
 +    printf(" \"%s\"", json_escape_str(&buf, value, wctx));
 +    av_bprint_finalize(&buf, NULL);
 +}
 +
 +static void json_print_str(WriterContext *wctx, const char *key, const char *value)
 +{
 +    JSONContext *json = wctx->priv;
 +
 +    if (wctx->nb_item) printf("%s", json->item_sep);
 +    if (!json->compact)
 +        JSON_INDENT();
 +    json_print_item_str(wctx, key, value);
 +}
 +
 +static void json_print_int(WriterContext *wctx, const char *key, long long int value)
 +{
 +    JSONContext *json = wctx->priv;
 +    AVBPrint buf;
 +
 +    if (wctx->nb_item) printf("%s", json->item_sep);
 +    if (!json->compact)
 +        JSON_INDENT();
 +
 +    av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);
 +    printf("\"%s\": %lld", json_escape_str(&buf, key, wctx), value);
 +    av_bprint_finalize(&buf, NULL);
 +}
 +
 +static void json_show_tags(WriterContext *wctx, AVDictionary *dict)
 +{
 +    JSONContext *json = wctx->priv;
 +    AVDictionaryEntry *tag = NULL;
 +    int is_first = 1;
 +    if (!dict)
 +        return;
 +    printf("%s", json->item_sep);
 +    if (!json->compact)
 +        JSON_INDENT();
 +    printf("\"tags\": {%s", json->item_start_end);
 +    json->indent_level++;
 +    while ((tag = av_dict_get(dict, "", tag, AV_DICT_IGNORE_SUFFIX))) {
 +        if (is_first) is_first = 0;
 +        else          printf("%s", json->item_sep);
 +        if (!json->compact)
 +            JSON_INDENT();
 +        json_print_item_str(wctx, tag->key, tag->value);
 +    }
 +    json->indent_level--;
 +    printf("%s", json->item_start_end);
 +    if (!json->compact)
 +        JSON_INDENT();
 +    printf("}");
 +}
 +
 +static const Writer json_writer = {
 +    .name                 = "json",
 +    .priv_size            = sizeof(JSONContext),
 +    .init                 = json_init,
 +    .print_header         = json_print_header,
 +    .print_footer         = json_print_footer,
 +    .print_chapter_header = json_print_chapter_header,
 +    .print_chapter_footer = json_print_chapter_footer,
 +    .print_section_header = json_print_section_header,
 +    .print_section_footer = json_print_section_footer,
 +    .print_integer        = json_print_int,
 +    .print_string         = json_print_str,
 +    .show_tags            = json_show_tags,
 +    .flags = WRITER_FLAG_PUT_PACKETS_AND_FRAMES_IN_SAME_CHAPTER,
 +};
 +
 +/* XML output */
 +
 +typedef struct {
 +    const AVClass *class;
 +    int within_tag;
 +    int indent_level;
 +    int fully_qualified;
 +    int xsd_strict;
 +} XMLContext;
 +
 +#undef OFFSET
 +#define OFFSET(x) offsetof(XMLContext, x)
 +
 +static const AVOption xml_options[] = {
 +    {"fully_qualified", "specify if the output should be fully qualified", OFFSET(fully_qualified), AV_OPT_TYPE_INT, {.dbl=0},  0, 1 },
 +    {"q",               "specify if the output should be fully qualified", OFFSET(fully_qualified), AV_OPT_TYPE_INT, {.dbl=0},  0, 1 },
 +    {"xsd_strict",      "ensure that the output is XSD compliant",         OFFSET(xsd_strict),      AV_OPT_TYPE_INT, {.dbl=0},  0, 1 },
 +    {"x",               "ensure that the output is XSD compliant",         OFFSET(xsd_strict),      AV_OPT_TYPE_INT, {.dbl=0},  0, 1 },
 +    {NULL},
 +};
 +
 +static const char *xml_get_name(void *ctx)
 +{
 +    return "xml";
 +}
 +
 +static const AVClass xml_class = {
 +    "XMLContext",
 +    xml_get_name,
 +    xml_options
 +};
 +
 +static av_cold int xml_init(WriterContext *wctx, const char *args, void *opaque)
 +{
 +    XMLContext *xml = wctx->priv;
 +    int err;
 +
 +    xml->class = &xml_class;
 +    av_opt_set_defaults(xml);
 +
 +    if (args &&
 +        (err = (av_set_options_string(xml, args, "=", ":"))) < 0) {
 +        av_log(wctx, AV_LOG_ERROR, "Error parsing options string: '%s'\n", args);
 +        return err;
 +    }
 +
 +    if (xml->xsd_strict) {
 +        xml->fully_qualified = 1;
 +#define CHECK_COMPLIANCE(opt, opt_name)                                 \
 +        if (opt) {                                                      \
 +            av_log(wctx, AV_LOG_ERROR,                                  \
 +                   "XSD-compliant output selected but option '%s' was selected, XML output may be non-compliant.\n" \
 +                   "You need to disable such option with '-no%s'\n", opt_name, opt_name); \
 +            return AVERROR(EINVAL);                                     \
 +        }
 +        CHECK_COMPLIANCE(show_private_data, "private");
 +        CHECK_COMPLIANCE(show_value_unit,   "unit");
 +        CHECK_COMPLIANCE(use_value_prefix,  "prefix");
 +
 +        if (do_show_frames && do_show_packets) {
 +            av_log(wctx, AV_LOG_ERROR,
 +                   "Interleaved frames and packets are not allowed in XSD. "
 +                   "Select only one between the -show_frames and the -show_packets options.\n");
 +            return AVERROR(EINVAL);
 +        }
 +    }
 +
 +    return 0;
 +}
 +
 +static const char *xml_escape_str(AVBPrint *dst, const char *src, void *log_ctx)
 +{
 +    const char *p;
 +
 +    for (p = src; *p; p++) {
 +        switch (*p) {
 +        case '&' : av_bprintf(dst, "%s", "&amp;");  break;
 +        case '<' : av_bprintf(dst, "%s", "&lt;");   break;
 +        case '>' : av_bprintf(dst, "%s", "&gt;");   break;
 +        case '\"': av_bprintf(dst, "%s", "&quot;"); break;
 +        case '\'': av_bprintf(dst, "%s", "&apos;"); break;
 +        default: av_bprint_chars(dst, *p, 1);
 +        }
 +    }
 +
 +    return dst->str;
 +}
 +
 +static void xml_print_header(WriterContext *wctx)
 +{
 +    XMLContext *xml = wctx->priv;
 +    const char *qual = " xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' "
 +        "xmlns:ffprobe='http://www.ffmpeg.org/schema/ffprobe' "
 +        "xsi:schemaLocation='http://www.ffmpeg.org/schema/ffprobe ffprobe.xsd'";
 +
 +    printf("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n");
 +    printf("<%sffprobe%s>\n",
 +           xml->fully_qualified ? "ffprobe:" : "",
 +           xml->fully_qualified ? qual : "");
 +
 +    xml->indent_level++;
 +}
 +
 +static void xml_print_footer(WriterContext *wctx)
 +{
 +    XMLContext *xml = wctx->priv;
 +
 +    xml->indent_level--;
 +    printf("</%sffprobe>\n", xml->fully_qualified ? "ffprobe:" : "");
 +}
 +
 +#define XML_INDENT() printf("%*c", xml->indent_level * 4, ' ')
 +
 +static void xml_print_chapter_header(WriterContext *wctx, const char *chapter)
 +{
 +    XMLContext *xml = wctx->priv;
 +
 +    if (wctx->nb_chapter)
 +        printf("\n");
 +    if (wctx->multiple_sections) {
 +        XML_INDENT(); printf("<%s>\n", chapter);
 +        xml->indent_level++;
 +    }
 +}
 +
 +static void xml_print_chapter_footer(WriterContext *wctx, const char *chapter)
 +{
 +    XMLContext *xml = wctx->priv;
 +
 +    if (wctx->multiple_sections) {
 +        xml->indent_level--;
 +        XML_INDENT(); printf("</%s>\n", chapter);
 +    }
 +}
 +
 +static void xml_print_section_header(WriterContext *wctx, const char *section)
 +{
 +    XMLContext *xml = wctx->priv;
 +
 +    XML_INDENT(); printf("<%s ", section);
 +    xml->within_tag = 1;
 +}
 +
 +static void xml_print_section_footer(WriterContext *wctx, const char *section)
 +{
 +    XMLContext *xml = wctx->priv;
 +
 +    if (xml->within_tag)
 +        printf("/>\n");
 +    else {
 +        XML_INDENT(); printf("</%s>\n", section);
 +    }
 +}
 +
 +static void xml_print_str(WriterContext *wctx, const char *key, const char *value)
 +{
 +    AVBPrint buf;
 +
 +    if (wctx->nb_item)
 +        printf(" ");
 +    av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);
 +    printf("%s=\"%s\"", key, xml_escape_str(&buf, value, wctx));
 +    av_bprint_finalize(&buf, NULL);
 +}
 +
 +static void xml_print_int(WriterContext *wctx, const char *key, long long int value)
 +{
 +    if (wctx->nb_item)
 +        printf(" ");
 +    printf("%s=\"%lld\"", key, value);
 +}
 +
 +static void xml_show_tags(WriterContext *wctx, AVDictionary *dict)
 +{
 +    XMLContext *xml = wctx->priv;
 +    AVDictionaryEntry *tag = NULL;
 +    int is_first = 1;
 +    AVBPrint buf;
 +
 +    av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);
 +    xml->indent_level++;
 +    while ((tag = av_dict_get(dict, "", tag, AV_DICT_IGNORE_SUFFIX))) {
 +        if (is_first) {
 +            /* close section tag */
 +            printf(">\n");
 +            xml->within_tag = 0;
 +            is_first = 0;
 +        }
 +        XML_INDENT();
 +
 +        av_bprint_clear(&buf);
 +        printf("<tag key=\"%s\"", xml_escape_str(&buf, tag->key, wctx));
 +        av_bprint_clear(&buf);
 +        printf(" value=\"%s\"/>\n", xml_escape_str(&buf, tag->value, wctx));
 +    }
 +    av_bprint_finalize(&buf, NULL);
 +    xml->indent_level--;
 +}
 +
 +static Writer xml_writer = {
 +    .name                 = "xml",
 +    .priv_size            = sizeof(XMLContext),
 +    .init                 = xml_init,
 +    .print_header         = xml_print_header,
 +    .print_footer         = xml_print_footer,
 +    .print_chapter_header = xml_print_chapter_header,
 +    .print_chapter_footer = xml_print_chapter_footer,
 +    .print_section_header = xml_print_section_header,
 +    .print_section_footer = xml_print_section_footer,
 +    .print_integer        = xml_print_int,
 +    .print_string         = xml_print_str,
 +    .show_tags            = xml_show_tags,
 +    .flags = WRITER_FLAG_PUT_PACKETS_AND_FRAMES_IN_SAME_CHAPTER,
 +};
 +
 +static void writer_register_all(void)
 +{
 +    static int initialized;
 +
 +    if (initialized)
 +        return;
 +    initialized = 1;
 +
 +    writer_register(&default_writer);
 +    writer_register(&compact_writer);
 +    writer_register(&csv_writer);
 +    writer_register(&flat_writer);
 +    writer_register(&ini_writer);
 +    writer_register(&json_writer);
 +    writer_register(&xml_writer);
 +}
 +
 +#define print_fmt(k, f, ...) do {              \
 +    av_bprint_clear(&pbuf);                    \
 +    av_bprintf(&pbuf, f, __VA_ARGS__);         \
 +    writer_print_string(w, k, pbuf.str, 0);    \
 +} while (0)
 +
 +#define print_int(k, v)         writer_print_integer(w, k, v)
 +#define print_q(k, v, s)        writer_print_rational(w, k, v, s)
 +#define print_str(k, v)         writer_print_string(w, k, v, 0)
 +#define print_str_opt(k, v)     writer_print_string(w, k, v, 1)
 +#define print_time(k, v, tb)    writer_print_time(w, k, v, tb, 0)
 +#define print_ts(k, v)          writer_print_ts(w, k, v, 0)
 +#define print_duration_time(k, v, tb) writer_print_time(w, k, v, tb, 1)
 +#define print_duration_ts(k, v)       writer_print_ts(w, k, v, 1)
 +#define print_val(k, v, u)      writer_print_string(w, k, \
 +    value_string(val_str, sizeof(val_str), (struct unit_value){.val.i = v, .unit=u}), 0)
 +#define print_section_header(s) writer_print_section_header(w, s)
 +#define print_section_footer(s) writer_print_section_footer(w, s)
 +#define show_tags(metadata)     writer_show_tags(w, metadata)
 +
 +static void show_packet(WriterContext *w, AVFormatContext *fmt_ctx, AVPacket *pkt, int packet_idx)
 +{
 +    char val_str[128];
 +    AVStream *st = fmt_ctx->streams[pkt->stream_index];
 +    AVBPrint pbuf;
 +    const char *s;
 +
 +    av_bprint_init(&pbuf, 1, AV_BPRINT_SIZE_UNLIMITED);
 +
 +    print_section_header("packet");
 +    s = av_get_media_type_string(st->codec->codec_type);
 +    if (s) print_str    ("codec_type", s);
 +    else   print_str_opt("codec_type", "unknown");
 +    print_int("stream_index",     pkt->stream_index);
 +    print_ts  ("pts",             pkt->pts);
 +    print_time("pts_time",        pkt->pts, &st->time_base);
 +    print_ts  ("dts",             pkt->dts);
 +    print_time("dts_time",        pkt->dts, &st->time_base);
 +    print_duration_ts("duration",        pkt->duration);
 +    print_duration_time("duration_time", pkt->duration, &st->time_base);
 +    print_duration_ts("convergence_duration", pkt->convergence_duration);
 +    print_duration_time("convergence_duration_time", pkt->convergence_duration, &st->time_base);
 +    print_val("size",             pkt->size, unit_byte_str);
 +    if (pkt->pos != -1) print_fmt    ("pos", "%"PRId64, pkt->pos);
 +    else                print_str_opt("pos", "N/A");
 +    print_fmt("flags", "%c",      pkt->flags & AV_PKT_FLAG_KEY ? 'K' : '_');
 +    if (do_show_data)
 +        writer_print_data(w, "data", pkt->data, pkt->size);
 +    print_section_footer("packet");
 +
 +    av_bprint_finalize(&pbuf, NULL);
 +    fflush(stdout);
 +}
 +
 +static void show_frame(WriterContext *w, AVFrame *frame, AVStream *stream,
 +                       AVFormatContext *fmt_ctx)
 +{
 +    AVBPrint pbuf;
 +    const char *s;
 +
 +    av_bprint_init(&pbuf, 1, AV_BPRINT_SIZE_UNLIMITED);
 +
 +    print_section_header("frame");
 +
 +    s = av_get_media_type_string(stream->codec->codec_type);
 +    if (s) print_str    ("media_type", s);
 +    else   print_str_opt("media_type", "unknown");
 +    print_int("key_frame",              frame->key_frame);
 +    print_ts  ("pkt_pts",               frame->pkt_pts);
 +    print_time("pkt_pts_time",          frame->pkt_pts, &stream->time_base);
 +    print_ts  ("pkt_dts",               frame->pkt_dts);
 +    print_time("pkt_dts_time",          frame->pkt_dts, &stream->time_base);
 +    print_duration_ts  ("pkt_duration",      frame->pkt_duration);
 +    print_duration_time("pkt_duration_time", frame->pkt_duration, &stream->time_base);
 +    if (frame->pkt_pos != -1) print_fmt    ("pkt_pos", "%"PRId64, frame->pkt_pos);
 +    else                      print_str_opt("pkt_pos", "N/A");
 +
 +    switch (stream->codec->codec_type) {
 +        AVRational sar;
 +
 +    case AVMEDIA_TYPE_VIDEO:
 +        print_int("width",                  frame->width);
 +        print_int("height",                 frame->height);
 +        s = av_get_pix_fmt_name(frame->format);
 +        if (s) print_str    ("pix_fmt", s);
 +        else   print_str_opt("pix_fmt", "unknown");
 +        sar = av_guess_sample_aspect_ratio(fmt_ctx, stream, frame);
 +        if (sar.num) {
 +            print_q("sample_aspect_ratio", sar, ':');
 +        } else {
 +            print_str_opt("sample_aspect_ratio", "N/A");
 +        }
 +        print_fmt("pict_type",              "%c", av_get_picture_type_char(frame->pict_type));
 +        print_int("coded_picture_number",   frame->coded_picture_number);
 +        print_int("display_picture_number", frame->display_picture_number);
 +        print_int("interlaced_frame",       frame->interlaced_frame);
 +        print_int("top_field_first",        frame->top_field_first);
 +        print_int("repeat_pict",            frame->repeat_pict);
 +        print_int("reference",              frame->reference);
 +        break;
 +
 +    case AVMEDIA_TYPE_AUDIO:
 +        s = av_get_sample_fmt_name(frame->format);
 +        if (s) print_str    ("sample_fmt", s);
 +        else   print_str_opt("sample_fmt", "unknown");
 +        print_int("nb_samples",         frame->nb_samples);
 +        break;
 +    }
 +    show_tags(av_frame_get_metadata(frame));
 +
 +    print_section_footer("frame");
 +
 +    av_bprint_finalize(&pbuf, NULL);
 +    fflush(stdout);
 +}
 +
 +static av_always_inline int get_decoded_frame(AVFormatContext *fmt_ctx,
 +                                              AVFrame *frame, int *got_frame,
 +                                              AVPacket *pkt)
 +{
 +    AVCodecContext *dec_ctx = fmt_ctx->streams[pkt->stream_index]->codec;
 +    int ret = 0;
 +
 +    *got_frame = 0;
 +    if (dec_ctx->codec) {
 +        switch (dec_ctx->codec_type) {
 +        case AVMEDIA_TYPE_VIDEO:
 +            ret = avcodec_decode_video2(dec_ctx, frame, got_frame, pkt);
 +            break;
 +
 +        case AVMEDIA_TYPE_AUDIO:
 +            ret = avcodec_decode_audio4(dec_ctx, frame, got_frame, pkt);
 +            break;
 +        }
 +    }
 +
 +    return ret;
 +}
 +
 +static void read_packets(WriterContext *w, AVFormatContext *fmt_ctx)
 +{
 +    AVPacket pkt, pkt1;
 +    AVFrame frame;
 +    int i = 0, ret, got_frame;
 +
 +    av_init_packet(&pkt);
 +
 +    while (!av_read_frame(fmt_ctx, &pkt)) {
 +        if (do_read_packets) {
 +            if (do_show_packets)
 +                show_packet(w, fmt_ctx, &pkt, i++);
 +            nb_streams_packets[pkt.stream_index]++;
 +        }
 +        if (do_read_frames) {
 +            pkt1 = pkt;
 +            while (pkt1.size) {
 +                avcodec_get_frame_defaults(&frame);
 +                ret = get_decoded_frame(fmt_ctx, &frame, &got_frame, &pkt1);
 +                if (ret < 0 || !got_frame)
 +                    break;
 +                if (do_show_frames)
 +                    show_frame(w, &frame, fmt_ctx->streams[pkt.stream_index], fmt_ctx);
 +                pkt1.data += ret;
 +                pkt1.size -= ret;
 +                nb_streams_frames[pkt.stream_index]++;
 +            }
 +        }
 +        av_free_packet(&pkt);
 +    }
 +    av_init_packet(&pkt);
 +    pkt.data = NULL;
 +    pkt.size = 0;
 +    //Flush remaining frames that are cached in the decoder
 +    for (i = 0; i < fmt_ctx->nb_streams; i++) {
 +        pkt.stream_index = i;
 +        while (get_decoded_frame(fmt_ctx, &frame, &got_frame, &pkt) >= 0 && got_frame) {
 +            if (do_read_frames) {
 +                if (do_show_frames)
 +                    show_frame(w, &frame, fmt_ctx->streams[pkt.stream_index], fmt_ctx);
 +                nb_streams_frames[pkt.stream_index]++;
 +            }
 +        }
 +    }
 +}
 +
 +static void show_stream(WriterContext *w, AVFormatContext *fmt_ctx, int stream_idx)
 +{
 +    AVStream *stream = fmt_ctx->streams[stream_idx];
 +    AVCodecContext *dec_ctx;
 +    AVCodec *dec;
 +    char val_str[128];
 +    const char *s;
 +    AVRational sar, dar;
 +    AVBPrint pbuf;
 +
 +    av_bprint_init(&pbuf, 1, AV_BPRINT_SIZE_UNLIMITED);
 +
 +    print_section_header("stream");
 +
 +    print_int("index", stream->index);
 +
 +    if ((dec_ctx = stream->codec)) {
 +        const char *profile = NULL;
 +        if ((dec = dec_ctx->codec)) {
 +            print_str("codec_name",      dec->name);
 +            print_str("codec_long_name", dec->long_name);
 +        } else {
 +            print_str_opt("codec_name",      "unknown");
 +            print_str_opt("codec_long_name", "unknown");
 +        }
 +
 +        if (dec && (profile = av_get_profile_name(dec, dec_ctx->profile)))
 +            print_str("profile", profile);
 +        else
 +            print_str_opt("profile", "unknown");
 +
 +        s = av_get_media_type_string(dec_ctx->codec_type);
 +        if (s) print_str    ("codec_type", s);
 +        else   print_str_opt("codec_type", "unknown");
 +        print_q("codec_time_base", dec_ctx->time_base, '/');
 +
 +        /* print AVI/FourCC tag */
 +        av_get_codec_tag_string(val_str, sizeof(val_str), dec_ctx->codec_tag);
 +        print_str("codec_tag_string",    val_str);
 +        print_fmt("codec_tag", "0x%04x", dec_ctx->codec_tag);
 +
 +        switch (dec_ctx->codec_type) {
 +        case AVMEDIA_TYPE_VIDEO:
 +            print_int("width",        dec_ctx->width);
 +            print_int("height",       dec_ctx->height);
 +            print_int("has_b_frames", dec_ctx->has_b_frames);
 +            sar = av_guess_sample_aspect_ratio(fmt_ctx, stream, NULL);
 +            if (sar.den) {
 +                print_q("sample_aspect_ratio", sar, ':');
 +                av_reduce(&dar.num, &dar.den,
 +                          dec_ctx->width  * sar.num,
 +                          dec_ctx->height * sar.den,
 +                          1024*1024);
 +                print_q("display_aspect_ratio", dar, ':');
 +            } else {
 +                print_str_opt("sample_aspect_ratio", "N/A");
 +                print_str_opt("display_aspect_ratio", "N/A");
 +            }
 +            s = av_get_pix_fmt_name(dec_ctx->pix_fmt);
 +            if (s) print_str    ("pix_fmt", s);
 +            else   print_str_opt("pix_fmt", "unknown");
 +            print_int("level",   dec_ctx->level);
 +            if (dec_ctx->timecode_frame_start >= 0) {
 +                char tcbuf[AV_TIMECODE_STR_SIZE];
 +                av_timecode_make_mpeg_tc_string(tcbuf, dec_ctx->timecode_frame_start);
 +                print_str("timecode", tcbuf);
 +            } else {
 +                print_str_opt("timecode", "N/A");
 +            }
 +            break;
 +
 +        case AVMEDIA_TYPE_AUDIO:
 +            s = av_get_sample_fmt_name(dec_ctx->sample_fmt);
 +            if (s) print_str    ("sample_fmt", s);
 +            else   print_str_opt("sample_fmt", "unknown");
 +            print_val("sample_rate",     dec_ctx->sample_rate, unit_hertz_str);
 +            print_int("channels",        dec_ctx->channels);
 +            print_int("bits_per_sample", av_get_bits_per_sample(dec_ctx->codec_id));
 +            break;
 +        }
 +    } else {
 +        print_str_opt("codec_type", "unknown");
 +    }
 +    if (dec_ctx->codec && dec_ctx->codec->priv_class && show_private_data) {
 +        const AVOption *opt = NULL;
 +        while (opt = av_opt_next(dec_ctx->priv_data,opt)) {
 +            uint8_t *str;
 +            if (opt->flags) continue;
 +            if (av_opt_get(dec_ctx->priv_data, opt->name, 0, &str) >= 0) {
 +                print_str(opt->name, str);
 +                av_free(str);
 +            }
 +        }
 +    }
 +
 +    if (fmt_ctx->iformat->flags & AVFMT_SHOW_IDS) print_fmt    ("id", "0x%x", stream->id);
 +    else                                          print_str_opt("id", "N/A");
 +    print_q("r_frame_rate",   stream->r_frame_rate,   '/');
 +    print_q("avg_frame_rate", stream->avg_frame_rate, '/');
 +    print_q("time_base",      stream->time_base,      '/');
 +    print_time("start_time",    stream->start_time, &stream->time_base);
 +    print_time("duration",      stream->duration,   &stream->time_base);
 +    if (dec_ctx->bit_rate > 0) print_val    ("bit_rate", dec_ctx->bit_rate, unit_bit_per_second_str);
 +    else                       print_str_opt("bit_rate", "N/A");
 +    if (stream->nb_frames) print_fmt    ("nb_frames", "%"PRId64, stream->nb_frames);
 +    else                   print_str_opt("nb_frames", "N/A");
 +    if (nb_streams_frames[stream_idx])  print_fmt    ("nb_read_frames", "%"PRIu64, nb_streams_frames[stream_idx]);
 +    else                                print_str_opt("nb_read_frames", "N/A");
 +    if (nb_streams_packets[stream_idx]) print_fmt    ("nb_read_packets", "%"PRIu64, nb_streams_packets[stream_idx]);
 +    else                                print_str_opt("nb_read_packets", "N/A");
 +    show_tags(stream->metadata);
 +    if (do_show_data)
 +        writer_print_data(w, "extradata", dec_ctx->extradata,
 +                                          dec_ctx->extradata_size);
 +
 +    print_section_footer("stream");
 +    av_bprint_finalize(&pbuf, NULL);
 +    fflush(stdout);
 +}
 +
 +static void show_streams(WriterContext *w, AVFormatContext *fmt_ctx)
 +{
 +    int i;
 +    for (i = 0; i < fmt_ctx->nb_streams; i++)
 +        show_stream(w, fmt_ctx, i);
 +}
 +
 +static void show_format(WriterContext *w, AVFormatContext *fmt_ctx)
 +{
 +    char val_str[128];
 +    int64_t size = fmt_ctx->pb ? avio_size(fmt_ctx->pb) : -1;
 +
 +    print_section_header("format");
 +    print_str("filename",         fmt_ctx->filename);
 +    print_int("nb_streams",       fmt_ctx->nb_streams);
 +    print_str("format_name",      fmt_ctx->iformat->name);
 +    print_str("format_long_name", fmt_ctx->iformat->long_name);
 +    print_time("start_time",      fmt_ctx->start_time, &AV_TIME_BASE_Q);
 +    print_time("duration",        fmt_ctx->duration,   &AV_TIME_BASE_Q);
 +    if (size >= 0) print_val    ("size", size, unit_byte_str);
 +    else           print_str_opt("size", "N/A");
 +    if (fmt_ctx->bit_rate > 0) print_val    ("bit_rate", fmt_ctx->bit_rate, unit_bit_per_second_str);
 +    else                       print_str_opt("bit_rate", "N/A");
 +    show_tags(fmt_ctx->metadata);
 +    print_section_footer("format");
 +    fflush(stdout);
 +}
 +
 +static void show_error(WriterContext *w, int err)
 +{
 +    char errbuf[128];
 +    const char *errbuf_ptr = errbuf;
 +
 +    if (av_strerror(err, errbuf, sizeof(errbuf)) < 0)
 +        errbuf_ptr = strerror(AVUNERROR(err));
 +
 +    writer_print_chapter_header(w, "error");
 +    print_section_header("error");
 +    print_int("code", err);
 +    print_str("string", errbuf_ptr);
 +    print_section_footer("error");
 +    writer_print_chapter_footer(w, "error");
 +}
 +
 +static int open_input_file(AVFormatContext **fmt_ctx_ptr, const char *filename)
 +{
 +    int err, i;
 +    AVFormatContext *fmt_ctx = NULL;
 +    AVDictionaryEntry *t;
 +
 +    if ((err = avformat_open_input(&fmt_ctx, filename,
 +                                   iformat, &format_opts)) < 0) {
 +        print_error(filename, err);
 +        return err;
 +    }
 +    if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
 +        av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
 +        return AVERROR_OPTION_NOT_FOUND;
 +    }
 +
 +
 +    /* fill the streams in the format context */
 +    if ((err = avformat_find_stream_info(fmt_ctx, NULL)) < 0) {
 +        print_error(filename, err);
 +        return err;
 +    }
 +
 +    av_dump_format(fmt_ctx, 0, filename, 0);
 +
 +    /* bind a decoder to each input stream */
 +    for (i = 0; i < fmt_ctx->nb_streams; i++) {
 +        AVStream *stream = fmt_ctx->streams[i];
 +        AVCodec *codec;
 +
 +        if (stream->codec->codec_id == CODEC_ID_PROBE) {
 +            av_log(NULL, AV_LOG_ERROR,
 +                   "Failed to probe codec for input stream %d\n",
 +                    stream->index);
 +        } else if (!(codec = avcodec_find_decoder(stream->codec->codec_id))) {
 +            av_log(NULL, AV_LOG_ERROR,
 +                    "Unsupported codec with id %d for input stream %d\n",
 +                    stream->codec->codec_id, stream->index);
 +        } else if (avcodec_open2(stream->codec, codec, NULL) < 0) {
 +            av_log(NULL, AV_LOG_ERROR, "Error while opening codec for input stream %d\n",
 +                   stream->index);
 +        }
 +    }
 +
 +  &n