Remove avconv
authorMichael Niedermayer <michaelni@gmx.at>
Tue, 24 Jan 2012 20:55:47 +0000 (21:55 +0100)
committerMichael Niedermayer <michaelni@gmx.at>
Wed, 25 Jan 2012 21:46:37 +0000 (22:46 +0100)
All features have been merged into ffmpeg.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Makefile
avconv.c [deleted file]
configure
doc/avconv.texi [deleted file]

index 69b4c9f..55c26e1 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -11,7 +11,6 @@ vpath %.texi $(SRC_PATH)
 vpath %/fate_config.sh.template $(SRC_PATH)
 
 PROGS-$(CONFIG_FFMPEG)   += ffmpeg
-PROGS-$(CONFIG_AVCONV)   += avconv
 PROGS-$(CONFIG_FFPLAY)   += ffplay
 PROGS-$(CONFIG_FFPROBE)  += ffprobe
 PROGS-$(CONFIG_FFSERVER) += ffserver
@@ -24,7 +23,7 @@ HOSTPROGS  := $(TESTTOOLS:%=tests/%)
 TOOLS       = qt-faststart trasher
 TOOLS-$(CONFIG_ZLIB) += cws2fws
 
-BASENAMES   = ffmpeg avconv ffplay ffprobe ffserver
+BASENAMES   = ffmpeg ffplay ffprobe ffserver
 ALLPROGS    = $(BASENAMES:%=%$(PROGSSUF)$(EXESUF))
 ALLPROGS_G  = $(BASENAMES:%=%$(PROGSSUF)_g$(EXESUF))
 ALLMANPAGES = $(BASENAMES:%=%.1)
diff --git a/avconv.c b/avconv.c
deleted file mode 100644 (file)
index 59e12ff..0000000
--- a/avconv.c
+++ /dev/null
@@ -1,4669 +0,0 @@
-/*
- * ffmpeg main
- * 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
- */
-
-#include "config.h"
-#include <ctype.h>
-#include <string.h>
-#include <math.h>
-#include <stdlib.h>
-#include <errno.h>
-#include <signal.h>
-#include <limits.h>
-#include <unistd.h>
-#include "libavformat/avformat.h"
-#include "libavdevice/avdevice.h"
-#include "libswscale/swscale.h"
-#include "libavutil/opt.h"
-#include "libavcodec/audioconvert.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 "libavformat/os_support.h"
-
-#include "libavformat/ffm.h" // not public API
-
-#if CONFIG_AVFILTER
-# include "libavfilter/avcodec.h"
-# include "libavfilter/avfilter.h"
-# include "libavfilter/avfiltergraph.h"
-# include "libavfilter/buffersink.h"
-# include "libavfilter/buffersrc.h"
-# include "libavfilter/vsrc_buffer.h"
-#endif
-
-#if HAVE_SYS_RESOURCE_H
-#include <sys/types.h>
-#include <sys/time.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
-#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
-
-const char program_name[] = "avconv";
-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;
-} StreamMap;
-
-/**
- * select an input file for an output file
- */
-typedef struct MetadataMap {
-    int  file;      ///< file index
-    char type;      ///< type of metadata to copy -- (g)lobal, (s)tream, (c)hapter or (p)rogram
-    int  index;     ///< stream/chapter/program number
-} MetadataMap;
-
-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 file_overwrite = 0;
-static int no_file_overwrite = 0;
-static int do_benchmark = 0;
-static int do_hex_dump = 0;
-static int do_pkt_dump = 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 using_stdin = 0;
-static int run_as_daemon  = 0;
-static int q_pressed = 0;
-static int64_t video_size = 0;
-static int64_t audio_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 int print_stats = 1;
-
-static uint8_t *audio_buf;
-static unsigned int allocated_audio_buf_size;
-
-#define DEFAULT_PASS_LOGFILENAME_PREFIX "av2pass"
-
-typedef struct FrameBuffer {
-    uint8_t *base[4];
-    uint8_t *data[4];
-    int  linesize[4];
-
-    int h, w;
-    enum PixelFormat pix_fmt;
-
-    int refcount;
-    struct InputStream *ist;
-    struct FrameBuffer *next;
-} FrameBuffer;
-
-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;
-    AVFrame *filtered_frame;
-
-    int64_t       start;     /* time when read started */
-    int64_t       next_pts;  /* synthetic pts for cases where pkt.pts
-                                is not defined */
-    int64_t       pts;       /* current pts */
-    double ts_scale;
-    int is_start;            /* is 1 at the start and after a discontinuity */
-    int showed_multi_packet_warning;
-    AVDictionary *opts;
-
-    /* a pool of free buffers for decoded data */
-    FrameBuffer *buffer_pool;
-} InputStream;
-
-typedef struct InputFile {
-    AVFormatContext *ctx;
-    int eof_reached;      /* true if eof reached */
-    int ist_index;        /* index of first stream in ist_table */
-    int buffer_size;      /* current total buffer size */
-    int64_t ts_offset;
-    int nb_streams;       /* number of stream that avconv is aware of; may be different
-                             from ctx.nb_streams if new streams appear during av_read_frame() */
-    int rate_emu;
-} 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 */
-    // double sync_ipts;        /* dts from the AVPacket of the demuxer in second units */
-    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
-    AVBitStreamFilterContext *bitstream_filters;
-    AVCodec *enc;
-    int64_t max_frames;
-    AVFrame *output_frame;
-
-    /* video only */
-    int video_resample;
-    AVFrame resample_frame;              /* temporary frame for image resampling */
-    struct SwsContext *img_resample_ctx; /* for image resampling */
-    int resample_height;
-    int resample_width;
-    int resample_pix_fmt;
-    AVRational frame_rate;
-    int force_fps;
-    int top_field_first;
-
-    float frame_aspect_ratio;
-
-    /* forced key frames */
-    int64_t *forced_kf_pts;
-    int forced_kf_count;
-    int forced_kf_index;
-
-    /* audio only */
-    int audio_resample;
-    ReSampleContext *resample; /* for audio resampling */
-    int resample_sample_fmt;
-    int resample_channels;
-    int resample_sample_rate;
-    int reformat_pair;
-    AVAudioConvert *reformat_ctx;
-    AVFifoBuffer *fifo;     /* for compression: one audio fifo per codec */
-    FILE *logfile;
-
-#if CONFIG_AVFILTER
-    AVFilterContext *output_video_filter;
-    AVFilterContext *input_video_filter;
-    AVFilterBufferRef *picref;
-    char *avfilter;
-    AVFilterGraph *graph;
-#endif
-
-    int64_t sws_flags;
-    AVDictionary *opts;
-    int is_past_recording_time;
-    int stream_copy;
-    const char *attachment_filename;
-    int copy_initial_nonkeyframes;
-} OutputStream;
-
-#if HAVE_TERMIOS_H
-
-/* init terminal so that we can grab keys */
-static struct termios oldtty;
-#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 */
-    int64_t start_time;     /* start time in microseconds */
-    uint64_t limit_filesize;
-} 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;
-
-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;
-    /* first item specifies output metadata, second is input */
-    MetadataMap (*meta_data_maps)[2];
-    int nb_meta_data_maps;
-    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;
-#if CONFIG_AVFILTER
-    SpecifierOpt *filters;
-    int        nb_filters;
-#endif
-} OptionsContext;
-
-#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 void reset_options(OptionsContext *o)
-{
-    const OptionDef *po = options;
-
-    /* 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++;
-    }
-
-    av_freep(&o->stream_maps);
-    av_freep(&o->meta_data_maps);
-    av_freep(&o->streamid_map);
-
-    memset(o, 0, sizeof(*o));
-
-    o->mux_max_delay  = 0.7;
-    o->recording_time = INT64_MAX;
-    o->limit_filesize = UINT64_MAX;
-    o->chapters_input_file = INT_MAX;
-
-    uninit_opts();
-    init_opts();
-}
-
-static int alloc_buffer(InputStream *ist, FrameBuffer **pbuf)
-{
-    AVCodecContext *s = ist->st->codec;
-    FrameBuffer  *buf = av_mallocz(sizeof(*buf));
-    int ret;
-    const int pixel_size = av_pix_fmt_descriptors[s->pix_fmt].comp[0].step_minus1+1;
-    int h_chroma_shift, v_chroma_shift;
-    int edge = 32; // XXX should be avcodec_get_edge_width(), but that fails on svq1
-    int w = s->width, h = s->height;
-
-    if (!buf)
-        return AVERROR(ENOMEM);
-
-    if (!(s->flags & CODEC_FLAG_EMU_EDGE)) {
-        w += 2*edge;
-        h += 2*edge;
-    }
-
-    avcodec_align_dimensions(s, &w, &h);
-    if ((ret = av_image_alloc(buf->base, buf->linesize, w, h,
-                              s->pix_fmt, 32)) < 0) {
-        av_freep(&buf);
-        return ret;
-    }
-    /* XXX this shouldn't be needed, but some tests break without this line
-     * those decoders are buggy and need to be fixed.
-     * the following tests fail:
-     * bethsoft-vid, cdgraphics, ansi, aasc, fraps-v1, qtrle-1bit
-     */
-    memset(buf->base[0], 128, ret);
-
-    avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
-    for (int i = 0; i < FF_ARRAY_ELEMS(buf->data); i++) {
-        const int h_shift = i==0 ? 0 : h_chroma_shift;
-        const int v_shift = i==0 ? 0 : v_chroma_shift;
-        if (s->flags & CODEC_FLAG_EMU_EDGE)
-            buf->data[i] = buf->base[i];
-        else
-            buf->data[i] = buf->base[i] +
-                           FFALIGN((buf->linesize[i]*edge >> v_shift) +
-                                   (pixel_size*edge >> h_shift), 32);
-    }
-    buf->w       = s->width;
-    buf->h       = s->height;
-    buf->pix_fmt = s->pix_fmt;
-    buf->ist     = ist;
-
-    *pbuf = buf;
-    return 0;
-}
-
-static void free_buffer_pool(InputStream *ist)
-{
-    FrameBuffer *buf = ist->buffer_pool;
-    while (buf) {
-        ist->buffer_pool = buf->next;
-        av_freep(&buf->base[0]);
-        av_free(buf);
-        buf = ist->buffer_pool;
-    }
-}
-
-static void unref_buffer(InputStream *ist, FrameBuffer *buf)
-{
-    av_assert0(buf->refcount);
-    buf->refcount--;
-    if (!buf->refcount) {
-        buf->next = ist->buffer_pool;
-        ist->buffer_pool = buf;
-    }
-}
-
-static int codec_get_buffer(AVCodecContext *s, AVFrame *frame)
-{
-    InputStream *ist = s->opaque;
-    FrameBuffer *buf;
-    int ret, i;
-
-    if (!ist->buffer_pool && (ret = alloc_buffer(ist, &ist->buffer_pool)) < 0)
-        return ret;
-
-    buf              = ist->buffer_pool;
-    ist->buffer_pool = buf->next;
-    buf->next        = NULL;
-    if (buf->w != s->width || buf->h != s->height || buf->pix_fmt != s->pix_fmt) {
-        av_freep(&buf->base[0]);
-        av_free(buf);
-        if ((ret = alloc_buffer(ist, &buf)) < 0)
-            return ret;
-    }
-    buf->refcount++;
-
-    frame->opaque        = buf;
-    frame->type          = FF_BUFFER_TYPE_USER;
-    frame->extended_data = frame->data;
-    frame->pkt_pts       = s->pkt ? s->pkt->pts : AV_NOPTS_VALUE;
-
-    for (i = 0; i < FF_ARRAY_ELEMS(buf->data); i++) {
-        frame->base[i]     = buf->base[i];  // XXX h264.c uses base though it shouldn't
-        frame->data[i]     = buf->data[i];
-        frame->linesize[i] = buf->linesize[i];
-    }
-
-    return 0;
-}
-
-static void codec_release_buffer(AVCodecContext *s, AVFrame *frame)
-{
-    InputStream *ist = s->opaque;
-    FrameBuffer *buf = frame->opaque;
-    int i;
-
-    for (i = 0; i < FF_ARRAY_ELEMS(frame->data); i++)
-        frame->data[i] = NULL;
-
-    unref_buffer(ist, buf);
-}
-
-static void filter_release_buffer(AVFilterBuffer *fb)
-{
-    FrameBuffer *buf = fb->priv;
-    av_free(fb);
-    unref_buffer(buf->ist, buf);
-}
-
-#if CONFIG_AVFILTER
-
-static int configure_video_filters(InputStream *ist, OutputStream *ost)
-{
-    AVFilterContext *last_filter, *filter;
-    /** filter graph containing all filters including input & output */
-    AVCodecContext *codec = ost->st->codec;
-    AVCodecContext *icodec = ist->st->codec;
-    enum PixelFormat pix_fmts[] = { codec->pix_fmt, PIX_FMT_NONE };
-    AVBufferSinkParams *buffersink_params = av_buffersink_params_alloc();
-    AVRational sample_aspect_ratio;
-    char args[255];
-    int ret;
-
-    ost->graph = avfilter_graph_alloc();
-
-    if (ist->st->sample_aspect_ratio.num) {
-        sample_aspect_ratio = ist->st->sample_aspect_ratio;
-    } else
-        sample_aspect_ratio = ist->st->codec->sample_aspect_ratio;
-
-    snprintf(args, 255, "%d:%d:%d:%d:%d:%d:%d", ist->st->codec->width,
-             ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE,
-             sample_aspect_ratio.num, sample_aspect_ratio.den);
-
-    ret = avfilter_graph_create_filter(&ost->input_video_filter, avfilter_get_by_name("buffer"),
-                                       "src", args, NULL, ost->graph);
-    if (ret < 0)
-        return ret;
-#if FF_API_OLD_VSINK_API
-    ret = avfilter_graph_create_filter(&ost->output_video_filter, avfilter_get_by_name("buffersink"),
-                                       "out", NULL, pix_fmts, ost->graph);
-#else
-    buffersink_params->pixel_fmts = pix_fmts;
-    ret = avfilter_graph_create_filter(&ost->output_video_filter, avfilter_get_by_name("buffersink"),
-                                       "out", NULL, buffersink_params, ost->graph);
-#endif
-    av_freep(&buffersink_params);
-    if (ret < 0)
-        return ret;
-    last_filter = ost->input_video_filter;
-
-    if (codec->width != icodec->width || codec->height != icodec->height) {
-        snprintf(args, 255, "%d:%d:flags=0x%X",
-                 codec->width,
-                 codec->height,
-                 (unsigned)ost->sws_flags);
-        if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
-                                                NULL, args, NULL, ost->graph)) < 0)
-            return ret;
-        if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
-            return ret;
-        last_filter = filter;
-    }
-
-    snprintf(args, sizeof(args), "flags=0x%X", (unsigned)ost->sws_flags);
-    ost->graph->scale_sws_opts = av_strdup(args);
-
-    if (ost->avfilter) {
-        AVFilterInOut *outputs = avfilter_inout_alloc();
-        AVFilterInOut *inputs  = avfilter_inout_alloc();
-
-        outputs->name    = av_strdup("in");
-        outputs->filter_ctx = last_filter;
-        outputs->pad_idx = 0;
-        outputs->next    = NULL;
-
-        inputs->name    = av_strdup("out");
-        inputs->filter_ctx = ost->output_video_filter;
-        inputs->pad_idx = 0;
-        inputs->next    = NULL;
-
-        if ((ret = avfilter_graph_parse(ost->graph, ost->avfilter, &inputs, &outputs, NULL)) < 0)
-            return ret;
-    } else {
-        if ((ret = avfilter_link(last_filter, 0, ost->output_video_filter, 0)) < 0)
-            return ret;
-    }
-
-    if ((ret = avfilter_graph_config(ost->graph, NULL)) < 0)
-        return ret;
-
-    codec->width  = ost->output_video_filter->inputs[0]->w;
-    codec->height = ost->output_video_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->output_video_filter->inputs[0]->sample_aspect_ratio;
-
-    return 0;
-}
-#endif /* CONFIG_AVFILTER */
-
-static void term_exit(void)
-{
-    av_log(NULL, AV_LOG_QUIET, "%s", "");
-#if HAVE_TERMIOS_H
-    if(!run_as_daemon)
-        tcsetattr (0, TCSANOW, &oldtty);
-#endif
-}
-
-static volatile int received_sigterm = 0;
-
-static void
-sigterm_handler(int sig)
-{
-    received_sigterm = sig;
-    q_pressed++;
-    term_exit();
-}
-
-static void term_init(void)
-{
-#if HAVE_TERMIOS_H
-    if(!run_as_daemon){
-    struct termios tty;
-
-    tcgetattr (0, &tty);
-    oldtty = tty;
-    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
-
-    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)
-{
-#if HAVE_TERMIOS_H
-    int n = 1;
-    unsigned char ch;
-    struct timeval tv;
-    fd_set rfds;
-
-    if(run_as_daemon)
-        return -1;
-
-    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(kbhit())
-        return(getch());
-#endif
-    return -1;
-}
-
-static int decode_interrupt_cb(void *ctx)
-{
-    q_pressed += read_key() == 'q';
-    return q_pressed > 1;
-}
-
-static const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
-
-void exit_program(int ret)
-{
-    int i;
-
-    /* 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);
-    }
-    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;
-
-        if (output_streams[i].output_frame) {
-            AVFrame *frame = output_streams[i].output_frame;
-            if (frame->extended_data != frame->data)
-                av_freep(&frame->extended_data);
-            av_freep(&frame);
-        }
-
-#if CONFIG_AVFILTER
-        av_freep(&output_streams[i].avfilter);
-#endif
-    }
-    for (i = 0; i < nb_input_files; i++) {
-        avformat_close_input(&input_files[i].ctx);
-    }
-    for (i = 0; i < nb_input_streams; i++) {
-        av_freep(&input_streams[i].decoded_frame);
-        av_freep(&input_streams[i].filtered_frame);
-        av_dict_free(&input_streams[i].opts);
-        free_buffer_pool(&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();
-    av_free(audio_buf);
-    allocated_audio_buf_size = 0;
-
-#if CONFIG_AVFILTER
-    avfilter_uninit();
-#endif
-    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, "Convertion 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 choose_sample_rate(AVStream *st, AVCodec *codec)
-{
-    if (codec && codec->supported_samplerates) {
-        const int *p  = codec->supported_samplerates;
-        int best      = 0;
-        int best_dist = INT_MAX;
-        for (; *p; p++) {
-            int dist = abs(st->codec->sample_rate - *p);
-            if (dist < best_dist) {
-                best_dist = dist;
-                best      = *p;
-            }
-        }
-        if (best_dist) {
-            av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
-        }
-        st->codec->sample_rate = best;
-    }
-}
-
-static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
-{
-    if (codec && codec->pix_fmts) {
-        const enum PixelFormat *p = codec->pix_fmts;
-        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++) {
-            if (*p == st->codec->pix_fmt)
-                break;
-        }
-        if (*p == PIX_FMT_NONE) {
-            if (st->codec->pix_fmt != 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[st->codec->pix_fmt].name,
-                       codec->name,
-                       av_pix_fmt_descriptors[codec->pix_fmts[0]].name);
-            st->codec->pix_fmt = codec->pix_fmts[0];
-        }
-    }
-}
-
-static double
-get_sync_ipts(const OutputStream *ost)
-{
-    const InputStream *ist = ost->sync_ist;
-    OutputFile *of = &output_files[ost->file_index];
-    return (double)(ist->pts - of->start_time) / AV_TIME_BASE;
-}
-
-static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
-{
-    AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
-    AVCodecContext          *avctx = ost->st->codec;
-    int ret;
-
-    /*
-     * 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)
-            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, "%s failed for stream %d, 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;
-    }
-
-    ret = av_interleaved_write_frame(s, pkt);
-    if (ret < 0) {
-        print_error("av_interleaved_write_frame()", ret);
-        exit_program(1);
-    }
-}
-
-static void generate_silence(uint8_t* buf, enum AVSampleFormat sample_fmt, size_t size)
-{
-    int fill_char = 0x00;
-    if (sample_fmt == AV_SAMPLE_FMT_U8)
-        fill_char = 0x80;
-    memset(buf, fill_char, size);
-}
-
-static int encode_audio_frame(AVFormatContext *s, OutputStream *ost,
-                              const uint8_t *buf, int buf_size)
-{
-    AVCodecContext *enc = ost->st->codec;
-    AVFrame *frame = NULL;
-    AVPacket pkt;
-    int ret, got_packet;
-
-    av_init_packet(&pkt);
-    pkt.data = NULL;
-    pkt.size = 0;
-
-    if (buf) {
-        if (!ost->output_frame) {
-            ost->output_frame = avcodec_alloc_frame();
-            if (!ost->output_frame) {
-                av_log(NULL, AV_LOG_FATAL, "out-of-memory in encode_audio_frame()\n");
-                exit_program(1);
-            }
-        }
-        frame = ost->output_frame;
-        if (frame->extended_data != frame->data)
-            av_freep(&frame->extended_data);
-        avcodec_get_frame_defaults(frame);
-
-        frame->nb_samples  = buf_size /
-                             (enc->channels * av_get_bytes_per_sample(enc->sample_fmt));
-        if ((ret = avcodec_fill_audio_frame(frame, enc->channels, enc->sample_fmt,
-                                            buf, buf_size, 1)) < 0) {
-            av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
-            exit_program(1);
-        }
-    }
-
-    got_packet = 0;
-    if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
-        av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
-        exit_program(1);
-    }
-
-    if (got_packet) {
-        pkt.stream_index = ost->index;
-        if (pkt.pts != AV_NOPTS_VALUE)
-            pkt.pts      = av_rescale_q(pkt.pts,      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);
-
-        write_frame(s, &pkt, ost);
-
-        audio_size += pkt.size;
-    }
-
-    if (frame)
-        ost->sync_opts += frame->nb_samples;
-
-    return pkt.size;
-}
-
-static void do_audio_out(AVFormatContext *s, OutputStream *ost,
-                         InputStream *ist, AVFrame *decoded_frame)
-{
-    uint8_t *buftmp;
-    int64_t audio_buf_size;
-
-    int size_out, frame_bytes, resample_changed;
-    AVCodecContext *enc = ost->st->codec;
-    AVCodecContext *dec = ist->st->codec;
-    int osize = av_get_bytes_per_sample(enc->sample_fmt);
-    int isize = av_get_bytes_per_sample(dec->sample_fmt);
-    uint8_t *buf = decoded_frame->data[0];
-    int size     = decoded_frame->nb_samples * dec->channels * isize;
-    int64_t allocated_for_size = size;
-
-need_realloc:
-    audio_buf_size  = (allocated_for_size + isize * dec->channels - 1) / (isize * dec->channels);
-    audio_buf_size  = (audio_buf_size * enc->sample_rate + dec->sample_rate) / dec->sample_rate;
-    audio_buf_size  = audio_buf_size * 2 + 10000; // safety factors for the deprecated resampling API
-    audio_buf_size  = FFMAX(audio_buf_size, enc->frame_size);
-    audio_buf_size *= osize * enc->channels;
-
-    if (audio_buf_size > INT_MAX) {
-        av_log(NULL, AV_LOG_FATAL, "Buffer sizes too large\n");
-        exit_program(1);
-    }
-
-    av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
-    if (!audio_buf) {
-        av_log(NULL, AV_LOG_FATAL, "Out of memory in do_audio_out\n");
-        exit_program(1);
-    }
-
-    if (enc->channels != dec->channels)
-        ost->audio_resample = 1;
-
-    resample_changed = ost->resample_sample_fmt  != dec->sample_fmt ||
-                       ost->resample_channels    != dec->channels   ||
-                       ost->resample_sample_rate != dec->sample_rate;
-
-    if ((ost->audio_resample && !ost->resample) || resample_changed) {
-        if (resample_changed) {
-            av_log(NULL, AV_LOG_INFO, "Input stream #%d:%d frame changed from rate:%d fmt:%s ch:%d to rate:%d fmt:%s ch:%d\n",
-                   ist->file_index, ist->st->index,
-                   ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
-                   dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
-            ost->resample_sample_fmt  = dec->sample_fmt;
-            ost->resample_channels    = dec->channels;
-            ost->resample_sample_rate = dec->sample_rate;
-            if (ost->resample)
-                audio_resample_close(ost->resample);
-        }
-        /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
-        if (audio_sync_method <= 1 &&
-            ost->resample_sample_fmt  == enc->sample_fmt &&
-            ost->resample_channels    == enc->channels   &&
-            ost->resample_sample_rate == enc->sample_rate) {
-            ost->resample = NULL;
-            ost->audio_resample = 0;
-        } else {
-            if (dec->sample_fmt != AV_SAMPLE_FMT_S16)
-                av_log(NULL, AV_LOG_WARNING, "Using s16 intermediate sample format for resampling\n");
-            ost->resample = av_audio_resample_init(enc->channels,    dec->channels,
-                                                   enc->sample_rate, dec->sample_rate,
-                                                   enc->sample_fmt,  dec->sample_fmt,
-                                                   16, 10, 0, 0.8);
-            if (!ost->resample) {
-                av_log(NULL, AV_LOG_FATAL, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
-                       dec->channels, dec->sample_rate,
-                       enc->channels, enc->sample_rate);
-                exit_program(1);
-            }
-        }
-    }
-
-#define MAKE_SFMT_PAIR(a,b) ((a)+AV_SAMPLE_FMT_NB*(b))
-    if (!ost->audio_resample && dec->sample_fmt != enc->sample_fmt &&
-        MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt) != ost->reformat_pair) {
-        if (ost->reformat_ctx)
-            av_audio_convert_free(ost->reformat_ctx);
-        ost->reformat_ctx = av_audio_convert_alloc(enc->sample_fmt, 1,
-                                                   dec->sample_fmt, 1, NULL, 0);
-        if (!ost->reformat_ctx) {
-            av_log(NULL, AV_LOG_FATAL, "Cannot convert %s sample format to %s sample format\n",
-                   av_get_sample_fmt_name(dec->sample_fmt),
-                   av_get_sample_fmt_name(enc->sample_fmt));
-            exit_program(1);
-        }
-        ost->reformat_pair = MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt);
-    }
-
-    if (audio_sync_method) {
-        double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts -
-                       av_fifo_size(ost->fifo) / (enc->channels * osize);
-        int idelta = delta * dec->sample_rate / enc->sample_rate;
-        int byte_delta = idelta * isize * dec->channels;
-
-        // FIXME resample delay
-        if (fabs(delta) > 50) {
-            if (ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate) {
-                if (byte_delta < 0) {
-                    byte_delta = FFMAX(byte_delta, -size);
-                    size += byte_delta;
-                    buf  -= byte_delta;
-                    av_log(NULL, AV_LOG_VERBOSE, "discarding %d audio samples\n",
-                           -byte_delta / (isize * dec->channels));
-                    if (!size)
-                        return;
-                    ist->is_start = 0;
-                } else {
-                    static uint8_t *input_tmp = NULL;
-                    input_tmp = av_realloc(input_tmp, byte_delta + size);
-
-                    if (byte_delta > allocated_for_size - size) {
-                        allocated_for_size = byte_delta + (int64_t)size;
-                        goto need_realloc;
-                    }
-                    ist->is_start = 0;
-
-                    generate_silence(input_tmp, dec->sample_fmt, byte_delta);
-                    memcpy(input_tmp + byte_delta, buf, size);
-                    buf = input_tmp;
-                    size += byte_delta;
-                    av_log(NULL, AV_LOG_VERBOSE, "adding %d audio samples of silence\n", idelta);
-                }
-            } else if (audio_sync_method > 1) {
-                int comp = av_clip(delta, -audio_sync_method, audio_sync_method);
-                av_assert0(ost->audio_resample);
-                av_log(NULL, AV_LOG_VERBOSE, "compensating audio timestamp drift:%f compensation:%d in:%d\n",
-                       delta, comp, enc->sample_rate);
-//                fprintf(stderr, "drift:%f len:%d opts:%"PRId64" ipts:%"PRId64" fifo:%d\n", delta, -1, ost->sync_opts, (int64_t)(get_sync_ipts(ost) * enc->sample_rate), av_fifo_size(ost->fifo)/(ost->st->codec->channels * 2));
-                av_resample_compensate(*(struct AVResampleContext**)ost->resample, comp, enc->sample_rate);
-            }
-        }
-    } else
-        ost->sync_opts = lrintf(get_sync_ipts(ost) * enc->sample_rate) -
-                                av_fifo_size(ost->fifo) / (enc->channels * osize); // FIXME wrong
-
-    if (ost->audio_resample) {
-        buftmp = audio_buf;
-        size_out = audio_resample(ost->resample,
-                                  (short *)buftmp, (short *)buf,
-                                  size / (dec->channels * isize));
-        size_out = size_out * enc->channels * osize;
-    } else {
-        buftmp = buf;
-        size_out = size;
-    }
-
-    if (!ost->audio_resample && dec->sample_fmt != enc->sample_fmt) {
-        const void *ibuf[6] = { buftmp };
-        void *obuf[6]  = { audio_buf };
-        int istride[6] = { isize };
-        int ostride[6] = { osize };
-        int len = size_out / istride[0];
-        if (av_audio_convert(ost->reformat_ctx, obuf, ostride, ibuf, istride, len) < 0) {
-            printf("av_audio_convert() failed\n");
-            if (exit_on_error)
-                exit_program(1);
-            return;
-        }
-        buftmp = audio_buf;
-        size_out = len * osize;
-    }
-
-    /* now encode as many frames as possible */
-    if (!(enc->codec->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE)) {
-        /* output resampled raw samples */
-        if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
-            av_log(NULL, AV_LOG_FATAL, "av_fifo_realloc2() failed\n");
-            exit_program(1);
-        }
-        av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
-
-        frame_bytes = enc->frame_size * osize * enc->channels;
-
-        while (av_fifo_size(ost->fifo) >= frame_bytes) {
-            av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
-            encode_audio_frame(s, ost, audio_buf, frame_bytes);
-        }
-    } else {
-        encode_audio_frame(s, ost, buftmp, size_out);
-    }
-}
-
-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)
-{
-    static uint8_t *subtitle_out = NULL;
-    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++) {
-        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.stream_index = ost->index;
-        pkt.data = subtitle_out;
-        pkt.size = subtitle_out_size;
-        pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, 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);
-    }
-}
-
-static int bit_buffer_size = 1024 * 256;
-static uint8_t *bit_buffer = NULL;
-
-#if !CONFIG_AVFILTER
-static void do_video_resample(OutputStream *ost,
-                              InputStream *ist,
-                              AVFrame *in_picture,
-                              AVFrame **out_picture)
-{
-    int resample_changed = 0;
-    AVCodecContext *dec = ist->st->codec;
-    AVCodecContext *enc = ost->st->codec;
-    *out_picture = in_picture;
-
-    resample_changed = ost->resample_width   != in_picture->width  ||
-                       ost->resample_height  != in_picture->height ||
-                       ost->resample_pix_fmt != in_picture->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 / frm size:%dx%d fmt:%s\n",
-               ist->file_index, ist->st->index,
-               ost->resample_width, ost->resample_height, av_get_pix_fmt_name(ost->resample_pix_fmt),
-               dec->width         , dec->height         , av_get_pix_fmt_name(dec->pix_fmt),
-               in_picture->width, in_picture->height, av_get_pix_fmt_name(in_picture->format));
-        ost->resample_width   = in_picture->width;
-        ost->resample_height  = in_picture->height;
-        ost->resample_pix_fmt = in_picture->format;
-    }
-
-    ost->video_resample = dec->width   != enc->width  ||
-                          dec->height  != enc->height ||
-                          dec->pix_fmt != enc->pix_fmt;
-
-
-    if (ost->video_resample) {
-        *out_picture = &ost->resample_frame;
-        if (!ost->img_resample_ctx || resample_changed) {
-            /* initialize the destination picture */
-            if (!ost->resample_frame.data[0]) {
-                avcodec_get_frame_defaults(&ost->resample_frame);
-                if (avpicture_alloc((AVPicture *)&ost->resample_frame, enc->pix_fmt,
-                                    enc->width, enc->height)) {
-                    fprintf(stderr, "Cannot allocate temp picture, check pix fmt\n");
-                    exit_program(1);
-                }
-            }
-            /* initialize a new scaler context */
-            sws_freeContext(ost->img_resample_ctx);
-            ost->img_resample_ctx = sws_getContext(dec->width, dec->height, dec->pix_fmt,
-                                                   enc->width, enc->height, enc->pix_fmt,
-                                                   ost->sws_flags, NULL, NULL, NULL);
-            if (ost->img_resample_ctx == NULL) {
-                av_log(NULL, AV_LOG_FATAL, "Cannot get resampling context\n");
-                exit_program(1);
-            }
-        }
-        sws_scale(ost->img_resample_ctx, in_picture->data, in_picture->linesize,
-              0, ost->resample_height, (*out_picture)->data, (*out_picture)->linesize);
-    }
-    if (resample_changed) {
-        ost->resample_width   = in_picture->width;
-        ost->resample_height  = in_picture->height;
-        ost->resample_pix_fmt = in_picture->format;
-    }
-}
-#endif
-
-
-static void do_video_out(AVFormatContext *s,
-                         OutputStream *ost,
-                         InputStream *ist,
-                         AVFrame *in_picture,
-                         int *frame_size, float quality)
-{
-    int nb_frames, i, ret, format_video_sync;
-    AVFrame *final_picture;
-    AVCodecContext *enc;
-    double sync_ipts;
-
-    enc = ost->st->codec;
-
-    sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
-
-    /* by default, we output a single frame */
-    nb_frames = 1;
-
-    *frame_size = 0;
-
-    format_video_sync = video_sync_method;
-    if (format_video_sync == VSYNC_AUTO)
-        format_video_sync = (s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH :
-                            (s->oformat->flags & AVFMT_VARIABLE_FPS) ? VSYNC_VFR : VSYNC_CFR;
-
-    if (format_video_sync != VSYNC_PASSTHROUGH) {
-        double vdelta = sync_ipts - ost->sync_opts;
-        // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
-        if (vdelta < -1.1)
-            nb_frames = 0;
-        else if (format_video_sync == VSYNC_VFR) {
-            if (vdelta <= -0.6) {
-                nb_frames = 0;
-            } else if (vdelta > 0.6)
-                ost->sync_opts = lrintf(sync_ipts);
-        } else if (vdelta > 1.1)
-            nb_frames = lrintf(vdelta);
-//fprintf(stderr, "vdelta:%f, ost->sync_opts:%"PRId64", ost->sync_ipts:%f nb_frames:%d\n", vdelta, ost->sync_opts, get_sync_ipts(ost), nb_frames);
-        if (nb_frames == 0) {
-            ++nb_frames_drop;
-            av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
-        } else if (nb_frames > 1) {
-            nb_frames_dup += nb_frames - 1;
-            av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
-        }
-    } else
-        ost->sync_opts = lrintf(sync_ipts);
-
-    nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
-    if (nb_frames <= 0)
-        return;
-
-#if !CONFIG_AVFILTER
-    do_video_resample(ost, ist, in_picture, &final_picture);
-#else
-    final_picture = in_picture;
-#endif
-
-    /* duplicates frame if needed */
-    for (i = 0; i < nb_frames; i++) {
-        AVPacket pkt;
-        av_init_packet(&pkt);
-        pkt.stream_index = ost->index;
-
-        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 *)final_picture;
-            pkt.size   =  sizeof(AVPicture);
-            pkt.pts    = av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
-            pkt.flags |= AV_PKT_FLAG_KEY;
-
-            write_frame(s, &pkt, ost);
-        } else {
-            AVFrame big_picture;
-
-            big_picture = *final_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;
-//            big_picture.pts = AV_NOPTS_VALUE;
-            big_picture.pts = ost->sync_opts;
-//            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
-// av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
-            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++;
-            }
-            ret = avcodec_encode_video(enc,
-                                       bit_buffer, bit_buffer_size,
-                                       &big_picture);
-            if (ret < 0) {
-                av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
-                exit_program(1);
-            }
-
-            if (ret > 0) {
-                pkt.data = bit_buffer;
-                pkt.size = ret;
-                if (enc->coded_frame->pts != AV_NOPTS_VALUE)
-                    pkt.pts = av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
-/*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
-   pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
-   pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
-
-                if (enc->coded_frame->key_frame)
-                    pkt.flags |= AV_PKT_FLAG_KEY;
-                write_frame(s, &pkt, ost);
-                *frame_size = ret;
-                video_size += ret;
-                // fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
-                //         enc->frame_number-1, ret, enc->pict_type);
-                /* 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++;
-    }
-}
-
-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));
-    }
-}
-
-static void print_report(OutputFile *output_files,
-                         OutputStream *ost_table, int nb_ostreams,
-                         int is_last_report, int64_t timer_start)
-{
-    char buf[1024];
-    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)
-        return;
-
-    if (!is_last_report) {
-        int64_t cur_time;
-        /* display the report every 0.5 seconds */
-        cur_time = av_gettime();
-        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);
-
-    buf[0] = '\0';
-    vid = 0;
-    for (i = 0; i < nb_ostreams; i++) {
-        float q = -1;
-        ost = &ost_table[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);
-        }
-        if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
-            float t = (av_gettime() - timer_start) / 1000000.0;
-
-            frame_number = ost->frame_number;
-            snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
-                     frame_number, (t > 1) ? (int)(frame_number / t + 0.5) : 0, 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;
-                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;
-                    snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error / scale));
-                }
-                snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
-            }
-            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);
-
-    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_log(NULL, AV_LOG_INFO, "%s    \r", buf);
-
-    fflush(stderr);
-
-    if (is_last_report) {
-        int64_t raw= audio_size + video_size + extra_size;
-        av_log(NULL, AV_LOG_INFO, "\n");
-        av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
-               video_size / 1024.0,
-               audio_size / 1024.0,
-               extra_size / 1024.0,
-               100.0 * (total_size - raw) / raw
-        );
-    }
-}
-
-static void flush_encoders(OutputStream *ost_table, int nb_ostreams)
-{
-    int i, ret;
-
-    for (i = 0; i < nb_ostreams; i++) {
-        OutputStream   *ost = &ost_table[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 (;;) {
-            AVPacket pkt;
-            int fifo_bytes;
-            av_init_packet(&pkt);
-            pkt.data = NULL;
-            pkt.size = 0;
-
-            switch (ost->st->codec->codec_type) {
-            case AVMEDIA_TYPE_AUDIO:
-                fifo_bytes = av_fifo_size(ost->fifo);
-                if (fifo_bytes > 0) {
-                    /* encode any samples remaining in fifo */
-                    int frame_bytes = fifo_bytes;
-
-                    av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
-
-                    /* pad last frame with silence if needed */
-                    if (!(enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME)) {
-                        frame_bytes = enc->frame_size * enc->channels *
-                                      av_get_bytes_per_sample(enc->sample_fmt);
-                        if (allocated_audio_buf_size < frame_bytes)
-                            exit_program(1);
-                        generate_silence(audio_buf+fifo_bytes, enc->sample_fmt, frame_bytes - fifo_bytes);
-                    }
-                    encode_audio_frame(os, ost, audio_buf, frame_bytes);
-                } else {
-                    /* flush encoder with NULL frames until it is done
-                       returning packets */
-                    if (encode_audio_frame(os, ost, NULL, 0) == 0) {
-                        stop_encoding = 1;
-                        break;
-                    }
-                }
-                break;
-            case AVMEDIA_TYPE_VIDEO:
-                ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
-                if (ret < 0) {
-                    av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
-                    exit_program(1);
-                }
-                video_size += ret;
-                if (enc->coded_frame && enc->coded_frame->key_frame)
-                    pkt.flags |= AV_PKT_FLAG_KEY;
-                if (ost->logfile && enc->stats_out) {
-                    fprintf(ost->logfile, "%s", enc->stats_out);
-                }
-                if (ret <= 0) {
-                    stop_encoding = 1;
-                    break;
-                }
-                pkt.stream_index = ost->index;
-                pkt.data = bit_buffer;
-                pkt.size = ret;
-                if (enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
-                    pkt.pts = av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
-                write_frame(os, &pkt, ost);
-                break;
-            default:
-                stop_encoding = 1;
-            }
-            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  = ist - input_streams;
-
-    if (ost->source_index != ist_index)
-        return 0;
-
-    if (of->start_time && ist->pts < of->start_time)
-        return 0;
-
-    if (of->recording_time != INT64_MAX &&
-        av_compare_ts(ist->pts, AV_TIME_BASE_Q, of->recording_time + of->start_time,
-                      (AVRational){ 1, 1000000 }) >= 0) {
-        ost->is_past_recording_time = 1;
-        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;
-
-    /* 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++;
-    }
-
-    opkt.stream_index = ost->index;
-    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->pts, 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
-       ) {
-        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->pts, 1000000, AV_TIME_BASE);
-        int64_t now = av_gettime() - ist->start;
-        if (pts > now)
-            usleep(pts - now);
-    }
-}
-
-static int transcode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
-{
-    AVFrame *decoded_frame;
-    AVCodecContext *avctx = ist->st->codec;
-    int bps = av_get_bytes_per_sample(ist->st->codec->sample_fmt);
-    int i, ret;
-
-    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;
-
-    ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
-    if (ret < 0) {
-        return ret;
-    }
-
-    if (!*got_output) {
-        /* no audio frame */
-        return ret;
-    }
-
-    /* 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->next_pts = decoded_frame->pts;
-
-    /* increment next_pts 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;
-
-    // preprocess audio (volume)
-    if (audio_volume != 256) {
-        int decoded_data_size = decoded_frame->nb_samples * avctx->channels * bps;
-        void *samples = decoded_frame->data[0];
-        switch (avctx->sample_fmt) {
-        case AV_SAMPLE_FMT_U8:
-        {
-            uint8_t *volp = samples;
-            for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
-                int v = (((*volp - 128) * audio_volume + 128) >> 8) + 128;
-                *volp++ = av_clip_uint8(v);
-            }
-            break;
-        }
-        case AV_SAMPLE_FMT_S16:
-        {
-            int16_t *volp = samples;
-            for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
-                int v = ((*volp) * audio_volume + 128) >> 8;
-                *volp++ = av_clip_int16(v);
-            }
-            break;
-        }
-        case AV_SAMPLE_FMT_S32:
-        {
-            int32_t *volp = samples;
-            for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
-                int64_t v = (((int64_t)*volp * audio_volume + 128) >> 8);
-                *volp++ = av_clipl_int32(v);
-            }
-            break;
-        }
-        case AV_SAMPLE_FMT_FLT:
-        {
-            float *volp = samples;
-            float scale = audio_volume / 256.f;
-            for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
-                *volp++ *= scale;
-            }
-            break;
-        }
-        case AV_SAMPLE_FMT_DBL:
-        {
-            double *volp = samples;
-            double scale = audio_volume / 256.;
-            for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
-                *volp++ *= scale;
-            }
-            break;
-        }
-        default:
-            av_log(NULL, AV_LOG_FATAL,
-                   "Audio volume adjustment on sample format %s is not supported.\n",
-                   av_get_sample_fmt_name(ist->st->codec->sample_fmt));
-            exit_program(1);
-        }
-    }
-
-    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_audio_out(output_files[ost->file_index].ctx, ost, ist, decoded_frame);
-    }
-
-    return ret;
-}
-
-static int transcode_video(InputStream *ist, AVPacket *pkt, int *got_output, int64_t *pkt_pts)
-{
-    AVFrame *decoded_frame, *filtered_frame = NULL;
-    void *buffer_to_free = NULL;
-    int i, ret = 0;
-    float quality;
-#if CONFIG_AVFILTER
-    int frame_available = 1;
-#endif
-
-    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->pts  = *pkt_pts;
-    pkt->dts  = ist->pts;
-    *pkt_pts  = AV_NOPTS_VALUE;
-
-    ret = avcodec_decode_video2(ist->st->codec,
-                                decoded_frame, got_output, pkt);
-    if (ret < 0)
-        return ret;
-
-    quality = same_quant ? decoded_frame->quality : 0;
-    if (!*got_output) {
-        /* no picture yet */
-        return ret;
-    }
-    ist->next_pts = ist->pts = decoded_frame->best_effort_timestamp;
-    if (pkt->duration)
-        ist->next_pts += 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_pts += ((int64_t)AV_TIME_BASE *
-                          ist->st->codec->time_base.num * ticks) /
-                          ist->st->codec->time_base.den;
-    }
-    pkt->size = 0;
-    pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
-
-    rate_emu_sleep(ist);
-
-    for (i = 0; i < nb_output_streams; i++) {
-        OutputStream *ost = &output_streams[i];
-        int frame_size, resample_changed;
-
-        if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
-            continue;
-
-#if CONFIG_AVFILTER
-        resample_changed = ost->resample_width   != decoded_frame->width  ||
-                           ost->resample_height  != decoded_frame->height ||
-                           ost->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,
-                    ost->resample_width,  ost->resample_height,  av_get_pix_fmt_name(ost->resample_pix_fmt),
-                    decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
-
-            avfilter_graph_free(&ost->graph);
-            if (configure_video_filters(ist, ost)) {
-                av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
-                exit_program(1);
-            }
-
-            ost->resample_width   = decoded_frame->width;
-            ost->resample_height  = decoded_frame->height;
-            ost->resample_pix_fmt = decoded_frame->format;
-        }
-
-        if (!decoded_frame->sample_aspect_ratio.num)
-            decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
-        decoded_frame->pts = ist->pts;
-        if (ist->st->codec->codec->capabilities & CODEC_CAP_DR1) {
-            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->pts                 = ist->pts;
-            fb->buf->priv           = buf;
-            fb->buf->free           = filter_release_buffer;
-
-            buf->refcount++;
-            av_buffersrc_buffer(ost->input_video_filter, fb);
-        } else
-            av_vsrc_buffer_add_frame(ost->input_video_filter, decoded_frame, AV_VSRC_BUF_FLAG_OVERWRITE);
-
-        if (!ist->filtered_frame && !(ist->filtered_frame = avcodec_alloc_frame())) {
-            av_free(buffer_to_free);
-            return AVERROR(ENOMEM);
-        } else
-            avcodec_get_frame_defaults(ist->filtered_frame);
-        filtered_frame = ist->filtered_frame;
-
-        frame_available = avfilter_poll_frame(ost->output_video_filter->inputs[0]);
-        while (frame_available) {
-            if (ost->output_video_filter) {
-                AVRational ist_pts_tb = ost->output_video_filter->inputs[0]->time_base;
-                if (av_buffersink_get_buffer_ref(ost->output_video_filter, &ost->picref, 0) < 0)
-                    goto cont;
-                if (ost->picref) {
-                    avfilter_fill_frame_from_video_buffer_ref(filtered_frame, ost->picref);
-                    ist->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
-                }
-            }
-            if (ost->picref->video && !ost->frame_aspect_ratio)
-                ost->st->codec->sample_aspect_ratio = ost->picref->video->sample_aspect_ratio;
-#else
-            filtered_frame = decoded_frame;
-#endif
-
-            do_video_out(output_files[ost->file_index].ctx, ost, ist, filtered_frame, &frame_size,
-                         same_quant ? quality : ost->st->codec->global_quality);
-            if (vstats_filename && frame_size)
-                do_video_stats(output_files[ost->file_index].ctx, ost, frame_size);
-#if CONFIG_AVFILTER
-            cont:
-            frame_available = ost->output_video_filter && avfilter_poll_frame(ost->output_video_filter->inputs[0]);
-            if (ost->picref)
-                avfilter_unref_buffer(ost->picref);
-        }
-#endif
-    }
-
-    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,
-                         OutputStream *ost_table, int nb_ostreams,
-                         const AVPacket *pkt)
-{
-    int i;
-    int got_output;
-    int64_t pkt_pts = AV_NOPTS_VALUE;
-    AVPacket avpkt;
-
-    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_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
-    if (pkt->pts != AV_NOPTS_VALUE)
-        pkt_pts = av_rescale_q(pkt->pts, 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 ret = 0;
-    handle_eof:
-
-        ist->pts = ist->next_pts;
-
-        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 = transcode_audio    (ist, &avpkt, &got_output);
-            break;
-        case AVMEDIA_TYPE_VIDEO:
-            ret = transcode_video    (ist, &avpkt, &got_output, &pkt_pts);
-            break;
-        case AVMEDIA_TYPE_SUBTITLE:
-            ret = transcode_subtitles(ist, &avpkt, &got_output);
-            break;
-        default:
-            return -1;
-        }
-
-        if (ret < 0)
-            return ret;
-        // touch data and size only if not EOF
-        if (pkt) {
-            avpkt.data += ret;
-            avpkt.size -= ret;
-        }
-        if (!got_output) {
-            continue;
-        }
-    }
-
-    /* handle stream copy */
-    if (!ist->decoding_needed) {
-        rate_emu_sleep(ist);
-        ist->pts = ist->next_pts;
-        switch (ist->st->codec->codec_type) {
-        case AVMEDIA_TYPE_AUDIO:
-            ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
-                             ist->st->codec->sample_rate;
-            break;
-        case AVMEDIA_TYPE_VIDEO:
-            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_pts += ((int64_t)AV_TIME_BASE *
-                                  ist->st->codec->time_base.num * ticks) /
-                                  ist->st->codec->time_base.den;
-            }
-            break;
-        }
-    }
-    for (i = 0; pkt && i < nb_ostreams; i++) {
-        OutputStream *ost = &ost_table[i];
-
-        if (!check_output_constraints(ist, ost) || ost->encoding_needed)
-            continue;
-
-        do_streamcopy(ist, ost, pkt);
-    }
-
-    return 0;
-}
-
-static void print_sdp(OutputFile *output_files, int n)
-{
-    char sdp[2048];
-    int i;
-    AVFormatContext **avc = av_malloc(sizeof(*avc) * n);
-
-    if (!avc)
-        exit_program(1);
-    for (i = 0; i < n; i++)
-        avc[i] = output_files[i].ctx;
-
-    av_sdp_create(avc, n, sdp, sizeof(sdp));
-    printf("SDP:\n%s\n", sdp);
-    fflush(stdout);
-    av_freep(&avc);
-}
-
-static int init_input_stream(int ist_index, OutputStream *output_streams, int nb_output_streams,
-                             char *error, int error_len)
-{
-    int i;
-    InputStream *ist = &input_streams[ist_index];
-    if (ist->decoding_needed) {
-        AVCodec *codec = ist->dec;
-        if (!codec) {
-            snprintf(error, error_len, "Decoder (codec id %d) not found for input stream #%d:%d",
-                    ist->st->codec->codec_id, ist->file_index, ist->st->index);
-            return AVERROR(EINVAL);
-        }
-
-        if (codec->type == AVMEDIA_TYPE_VIDEO && codec->capabilities & CODEC_CAP_DR1) {
-            ist->st->codec->get_buffer     = codec_get_buffer;
-            ist->st->codec->release_buffer = codec_release_buffer;
-            ist->st->codec->opaque         = ist;
-        }
-
-        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->pts = ist->st->avg_frame_rate.num ? - ist->st->codec->has_b_frames * AV_TIME_BASE / av_q2d(ist->st->avg_frame_rate) : 0;
-    ist->next_pts = AV_NOPTS_VALUE;
-    ist->is_start = 1;
-
-    return 0;
-}
-
-static int transcode_init(OutputFile *output_files,
-                          int nb_output_files,
-                          InputFile *input_files,
-                          int nb_input_files)
-{
-    int ret = 0, i, j, k;
-    AVFormatContext *oc;
-    AVCodecContext *codec, *icodec;
-    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);
-        }
-    }
-
-    /* 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 = &input_streams[ost->source_index];
-
-        if (ost->attachment_filename)
-            continue;
-
-        codec  = ost->st->codec;
-        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 = (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;
-            if (!copy_tb) {
-                codec->time_base      = icodec->time_base;
-                codec->time_base.num *= icodec->ticks_per_frame;
-                av_reduce(&codec->time_base.num, &codec->time_base.den,
-                          codec->time_base.num, codec->time_base.den, INT_MAX);
-            } else
-                codec->time_base = ist->st->time_base;
-
-            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;
-                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};
-                }
-                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(ost->st->codec->codec_id);
-
-            ist->decoding_needed = 1;
-            ost->encoding_needed = 1;
-
-            switch (codec->codec_type) {
-            case AVMEDIA_TYPE_AUDIO:
-                ost->fifo = av_fifo_alloc(1024);
-                if (!ost->fifo) {
-                    return AVERROR(ENOMEM);
-                }
-                ost->reformat_pair = MAKE_SFMT_PAIR(AV_SAMPLE_FMT_NONE,AV_SAMPLE_FMT_NONE);
-
-                if (!codec->sample_rate)
-                    codec->sample_rate = icodec->sample_rate;
-                choose_sample_rate(ost->st, ost->enc);
-                codec->time_base = (AVRational){ 1, codec->sample_rate };
-
-                if (codec->sample_fmt == AV_SAMPLE_FMT_NONE)
-                    codec->sample_fmt = icodec->sample_fmt;
-                choose_sample_fmt(ost->st, ost->enc);
-
-                if (!codec->channels) {
-                    codec->channels = icodec->channels;
-                    codec->channel_layout = icodec->channel_layout;
-                }
-                if (av_get_channel_layout_nb_channels(codec->channel_layout) != codec->channels)
-                    codec->channel_layout = 0;
-
-                ost->audio_resample       = codec-> sample_rate != icodec->sample_rate || audio_sync_method > 1;
-                icodec->request_channels  = codec-> channels;
-                ost->resample_sample_fmt  = icodec->sample_fmt;
-                ost->resample_sample_rate = icodec->sample_rate;
-                ost->resample_channels    = icodec->channels;
-                break;
-            case AVMEDIA_TYPE_VIDEO:
-                if (codec->pix_fmt == PIX_FMT_NONE)
-                    codec->pix_fmt = icodec->pix_fmt;
-                choose_pixel_fmt(ost->st, ost->enc);
-
-                if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
-                    av_log(NULL, AV_LOG_FATAL, "Video pixel format is unknown, stream cannot be encoded\n");
-                    exit_program(1);
-                }
-
-                if (!codec->width || !codec->height) {
-                    codec->width  = icodec->width;
-                    codec->height = icodec->height;
-                }
-
-                ost->video_resample = codec->width   != icodec->width  ||
-                                      codec->height  != icodec->height ||
-                                      codec->pix_fmt != icodec->pix_fmt;
-                if (ost->video_resample) {
-                    codec->bits_per_raw_sample= frame_bits_per_raw_sample;
-                }
-
-                ost->resample_height  = icodec->height;
-                ost->resample_width   = icodec->width;
-                ost->resample_pix_fmt = icodec->pix_fmt;
-
-                if (!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];
-                }
-                codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
-                if(   av_q2d(codec->time_base) < 0.001 && video_sync_method
-                   && (video_sync_method==1 || (video_sync_method<0 && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
-                    av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not effciciently supporting it.\n"
-                                               "Please consider specifiying a lower framerate, a different muxer or -vsync 2\n");
-                }
-
-#if CONFIG_AVFILTER
-                if (configure_video_filters(ist, ost)) {
-                    av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
-                    exit(1);
-                }
-#endif
-                break;
-            case AVMEDIA_TYPE_SUBTITLE:
-                break;
-            default:
-                abort();
-                break;
-            }
-            /* two pass mode */
-            if (codec->codec_id != CODEC_ID_H264 &&
-                (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 (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;
-                } else {
-                    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->codec_type == AVMEDIA_TYPE_VIDEO) {
-            /* maximum video buffer size is 6-bytes per pixel, plus DPX header size */
-            int        size = codec->width * codec->height;
-            bit_buffer_size = FFMAX(bit_buffer_size, 6 * size + 1664);
-        }
-    }
-
-    if (!bit_buffer)
-        bit_buffer = av_malloc(bit_buffer_size);
-    if (!bit_buffer) {
-        av_log(NULL, AV_LOG_ERROR, "Cannot allocate %d bytes output buffer\n",
-               bit_buffer_size);
-        return AVERROR(ENOMEM);
-    }
-
-    /* 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 = input_streams[ost->source_index].st->codec;
-            if (!codec) {
-                snprintf(error, sizeof(error), "Encoder (codec id %d) not found for output stream #%d:%d",
-                         ost->st->codec->codec_id, ost->file_index, ost->index);
-                ret = AVERROR(EINVAL);
-                goto dump_format;
-            }
-            if (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;
-            }
-            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, output_streams, nb_output_streams, 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 (avformat_write_header(oc, &output_files[i].opts) < 0) {
-            snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
-            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_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;
-        }
-        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(output_files, nb_output_files);
-    }
-
-    return 0;
-}
-
-/*
- * The following code is the main loop of the file converter
- */
-static int transcode(OutputFile *output_files,
-                     int nb_output_files,
-                     InputFile *input_files,
-                     int nb_input_files)
-{
-    int ret, i;
-    AVFormatContext *is, *os;
-    OutputStream *ost;
-    InputStream *ist;
-    uint8_t *no_packet;
-    int no_packet_count = 0;
-    int64_t timer_start;
-    int key;
-
-    if (!(no_packet = av_mallocz(nb_input_files)))
-        exit_program(1);
-
-    ret = transcode_init(output_files, nb_output_files, input_files, nb_input_files);
-    if (ret < 0)
-        goto fail;
-
-    if (!using_stdin) {
-        av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
-        avio_set_interrupt_cb(decode_interrupt_cb);
-    }
-    term_init();
-
-    timer_start = av_gettime();
-
-    for (; received_sigterm == 0;) {
-        int file_index, ist_index;
-        AVPacket pkt;
-        int64_t ipts_min;
-        double opts_min;
-
-        ipts_min = INT64_MAX;
-        opts_min = 1e100;
-        /* if 'q' pressed, exits */
-        if (!using_stdin) {
-            if (q_pressed)
-                break;
-            /* read_key() returns 0 on EOF */
-            key = read_key();
-            if (key == 'q')
-                break;
-            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 == '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
-                    scanf("%d", &debug);
-                for(i=0;i<nb_input_streams;i++) {
-                    input_streams[i].st->codec->debug = debug;
-                }
-                for(i=0;i<nb_output_streams;i++) {
-                    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"
-                                "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"
-                );
-            }
-        }
-
-        /* select the stream that we must read now by looking at the
-           smallest output pts */
-        file_index = -1;
-        for (i = 0; i < nb_output_streams; i++) {
-            OutputFile *of;
-            int64_t ipts;
-            double  opts;
-            ost = &output_streams[i];
-            of = &output_files[ost->file_index];
-            os = output_files[ost->file_index].ctx;
-            ist = &input_streams[ost->source_index];
-            if (ost->is_past_recording_time || no_packet[ist->file_index] ||
-                (os->pb && avio_tell(os->pb) >= of->limit_filesize))
-                continue;
-            opts = ost->st->pts.val * av_q2d(ost->st->time_base);
-            ipts = ist->pts;
-            if (!input_files[ist->file_index].eof_reached) {
-                if (ipts < ipts_min) {
-                    ipts_min = ipts;
-                    if (input_sync)
-                        file_index = ist->file_index;
-                }
-                if (opts < opts_min) {
-                    opts_min = opts;
-                    if (!input_sync) file_index = ist->file_index;
-                }
-            }
-            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;
-            }
-        }
-        /* if none, if is finished */
-        if (file_index < 0) {
-            if (no_packet_count) {
-                no_packet_count = 0;
-                memset(no_packet, 0, nb_input_files);
-                usleep(10000);
-                continue;
-            }
-            break;
-        }
-
-        /* read a frame from it and output it in the fifo */
-        is  = input_files[file_index].ctx;
-        ret = av_read_frame(is, &pkt);
-        if (ret == AVERROR(EAGAIN)) {
-            no_packet[file_index] = 1;
-            no_packet_count++;
-            continue;
-        }
-        if (ret < 0) {
-            input_files[file_index].eof_reached = 1;
-            if (opt_shortest)
-                break;
-            else
-                continue;
-        }
-
-        no_packet_count = 0;
-        memset(no_packet, 0, nb_input_files);
-
-        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)
-            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 (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;
-
-        //fprintf(stderr, "next:%"PRId64" dts:%"PRId64" off:%"PRId64" %d\n",
-        //        ist->next_pts,
-        //        pkt.dts, input_files[ist->file_index].ts_offset,
-        //        ist->st->codec->codec_type);
-        if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
-            && (is->iformat->flags & AVFMT_TS_DISCONT)) {
-            int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
-            int64_t delta   = pkt_dts - ist->next_pts;
-            if ((FFABS(delta) > 1LL * dts_delta_threshold * AV_TIME_BASE || pkt_dts + 1 < ist->pts) && !copy_ts) {
-                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);
-            }
-        }
-
-        // fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
-        if (output_packet(ist, output_streams, nb_output_streams, &pkt) < 0) {
-
-            av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d\n",
-                   ist->file_index, ist->st->index);
-            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(output_files, output_streams, nb_output_streams, 0, timer_start);
-    }
-
-    /* at the end of stream, we must flush the decoder buffers */
-    for (i = 0; i < nb_input_streams; i++) {
-        ist = &input_streams[i];
-        if (ist->decoding_needed) {
-            output_packet(ist, output_streams, nb_output_streams, NULL);
-        }
-    }
-    flush_encoders(output_streams, nb_output_streams);
-
-    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(output_files, output_streams, nb_output_streams, 1, timer_start);
-
-    /* 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);
-        }
-#if CONFIG_AVFILTER
-        avfilter_graph_free(&ost->graph);
-#endif
-    }
-
-    /* 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:
-    av_freep(&bit_buffer);
-    av_freep(&no_packet);
-
-    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_fifo_free(ost->fifo); /* works even if fifo is not
-                                             initialized but set to zero */
-                av_freep(&ost->st->codec->subtitle_header);
-                av_free(ost->resample_frame.data[0]);
-                av_free(ost->forced_kf_pts);
-                if (ost->video_resample)
-                    sws_freeContext(ost->img_resample_ctx);
-                if (ost->resample)
-                    audio_resample_close(ost->resample);
-                if (ost->reformat_ctx)
-                    av_audio_convert_free(ost->reformat_ctx);
-                av_dict_free(&ost->opts);
-            }
-        }
-    }
-    return ret;
-}
-
-static double parse_frame_aspect_ratio(const char *arg)
-{
-    int x = 0, y = 0;
-    double ar = 0;
-    const char *p;
-    char *end;
-
-    p = strchr(arg, ':');
-    if (p) {
-        x = strtol(arg, &end, 10);
-        if (end == p)
-            y = strtol(end + 1, &end, 10);
-        if (x > 0 && y > 0)
-            ar = (double)x / (double)y;
-    } else
-        ar = strtod(arg, NULL);
-
-    if (!ar) {
-        av_log(NULL, AV_LOG_FATAL, "Incorrect aspect ratio specification.\n");
-        exit_program(1);
-    }
-    return ar;
-}
-
-static int opt_audio_codec(OptionsContext *o, const char *opt, const char *arg)
-{
-    return parse_option(o, "codec:a", arg, options);
-}
-
-static int opt_video_codec(OptionsContext *o, const char *opt, const char *arg)
-{
-    return parse_option(o, "codec:v", arg, options);
-}
-
-static int opt_subtitle_codec(OptionsContext *o, const char *opt, const char *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;
-    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);
-        }
-    }
-
-
-    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;
-}
-
-/**
- * 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;
-    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 (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;\
-        }\
-
-    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 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;
-
-    for (i = 0; i < ic->nb_streams; i++) {
-        AVStream *st = ic->streams[i];
-        AVCodecContext *dec = st->codec;
-        InputStream *ist;
-
-        input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
-        ist = &input_streams[nb_input_streams - 1];
-        ist->st = st;
-        ist->file_index = nb_input_files;
-        ist->discard = 1;
-        ist->opts = filter_codec_opts(codec_opts, choose_decoder(o, ic, st), ic, st);
-
-        ist->ts_scale = 1.0;
-        MATCH_PER_STREAM_OPT(ts_scale, dbl, ist->ts_scale, ic, st);
-
-        ist->dec = choose_decoder(o, ic, st);
-
-        switch (dec->codec_type) {
-        case AVMEDIA_TYPE_AUDIO:
-            if(!ist->dec)
-                ist->dec = avcodec_find_decoder(dec->codec_id);
-            if(o->audio_disable)
-                st->discard = AVDISCARD_ALL;
-            break;
-        case AVMEDIA_TYPE_VIDEO:
-            if(!ist->dec)
-                ist->dec = avcodec_find_decoder(dec->codec_id);
-            if (dec->lowres) {
-                dec->flags |= CODEC_FLAG_EMU_EDGE;
-            }
-
-            if (o->video_disable)
-                st->discard = AVDISCARD_ALL;
-            else if (video_discard)
-                st->discard = video_discard;
-            break;
-        case AVMEDIA_TYPE_DATA:
-            break;
-        case AVMEDIA_TYPE_SUBTITLE:
-            if(!ist->dec)
-                ist->dec = avcodec_find_decoder(dec->codec_id);
-            if(o->subtitle_disable)
-                st->discard = AVDISCARD_ALL;
-            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 (!using_stdin && (!no_file_overwrite || file_overwrite)) {
-                fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
-                fflush(stderr);
-                if (!read_yesno()) {
-                    fprintf(stderr, "Not overwriting - exiting\n");
-                    exit_program(1);
-                }
-            }
-            else {
-                fprintf(stderr,"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:";
-
-    using_stdin |= !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) {
-        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) {
-        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->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);
-    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);
-    return 0;
-}
-
-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);
-    }
-    for (i = 0; i < n; i++) {
-        p = i ? strchr(p, ',') + 1 : kf;
-        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);
-    }
-}
-
-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)
-{
-    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);
-    ost = &output_streams[nb_output_streams - 1];
-    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, oc, st);
-    }
-
-    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);
-    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)
-{
-    AVStream *st;
-    OutputStream *ost;
-    AVCodecContext *video_enc;
-
-    ost = new_output_stream(o, oc, AVMEDIA_TYPE_VIDEO);
-    st  = ost->st;
-    video_enc = st->codec;
-
-    if (!ost->stream_copy) {
-        const char *p = NULL;
-        char *forced_key_frames = NULL, *frame_rate = NULL, *frame_size = NULL;
-        char *frame_aspect_ratio = NULL, *frame_pix_fmt = NULL;
-        char *intra_matrix = NULL, *inter_matrix = NULL, *filters = NULL;
-        int i;
-
-        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);
-        }
-
-        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)
-            ost->frame_aspect_ratio = parse_frame_aspect_ratio(frame_aspect_ratio);
-
-        MATCH_PER_STREAM_OPT(frame_pix_fmts, str, frame_pix_fmt, oc, st);
-        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;
-
-        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);
-            }
-            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;
-
-        /* two pass mode */
-        if (do_pass) {
-            if (do_pass == 1) {
-                video_enc->flags |= CODEC_FLAG_PASS1;
-            } else {
-                video_enc->flags |= CODEC_FLAG_PASS2;
-            }
-        }
-
-        MATCH_PER_STREAM_OPT(forced_key_frames, str, forced_key_frames, oc, st);
-        if (forced_key_frames)
-            parse_forced_key_frames(forced_key_frames, ost, video_enc);
-
-        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);
-
-#if CONFIG_AVFILTER
-        MATCH_PER_STREAM_OPT(filters, str, filters, oc, st);
-        if (filters)
-            ost->avfilter = av_strdup(filters);
-#endif
-    } 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)
-{
-    AVStream *st;
-    OutputStream *ost;
-    AVCodecContext *audio_enc;
-
-    ost = new_output_stream(o, oc, AVMEDIA_TYPE_AUDIO);
-    st  = ost->st;
-
-    audio_enc = st->codec;
-    audio_enc->codec_type = AVMEDIA_TYPE_AUDIO;
-
-    if (!ost->stream_copy) {
-        char *sample_fmt = NULL;
-
-        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);
-    }
-
-    return ost;
-}
-
-static OutputStream *new_data_stream(OptionsContext *o, AVFormatContext *oc)
-{
-    OutputStream *ost;
-
-    ost = new_output_stream(o, oc, AVMEDIA_TYPE_DATA);
-    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)
-{
-    OutputStream *ost = new_output_stream(o, oc, AVMEDIA_TYPE_ATTACHMENT);
-    ost->stream_copy = 1;
-    return ost;
-}
-
-static OutputStream *new_subtitle_stream(OptionsContext *o, AVFormatContext *oc)
-{
-    AVStream *st;
-    OutputStream *ost;
-    AVCodecContext *subtitle_enc;
-
-    ost = new_output_stream(o, oc, AVMEDIA_TYPE_SUBTITLE);
-    st  = ost->st;
-    subtitle_enc = st->codec;
-
-    subtitle_enc->codec_type = AVMEDIA_TYPE_SUBTITLE;
-
-    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(os->chapters, sizeof(AVChapter) * os->nb_chapters);
-        if (!os->chapters)
-            return AVERROR(ENOMEM);
-        os->chapters[os->nb_chapters - 1] = out_ch;
-    }
-    return 0;
-}
-
-static void opt_output_file(void *optctx, const char *filename)
-{
-    OptionsContext *o = optctx;
-    AVFormatContext *oc;
-    int i, err;
-    AVOutputFormat *file_oformat;
-    OutputStream *ost;
-    InputStream  *ist;
-
-    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;
-
-    if (!o->nb_stream_maps) {
-        /* pick the "best" stream of each type */
-#define NEW_STREAM(type, index)\
-        if (index >= 0) {\
-            ost = new_ ## type ## _stream(o, oc);\
-            ost->source_index = index;\
-            ost->sync_ist     = &input_streams[index];\
-            input_streams[index].discard = 0;\
-        }
-
-        /* 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;
-                }
-            }
-            NEW_STREAM(video, 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;
-                }
-            }
-            NEW_STREAM(audio, idx);
-        }
-
-        /* subtitles: pick first */
-        if (!o->subtitle_disable && oc->oformat->subtitle_codec != CODEC_ID_NONE) {
-            for (i = 0; i < nb_input_streams; i++)
-                if (input_streams[i].st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
-                    NEW_STREAM(subtitle, i);
-                    break;
-                }
-        }
-        /* do something with data? */
-    } else {
-        for (i = 0; i < o->nb_stream_maps; i++) {
-            StreamMap *map = &o->stream_maps[i];
-
-            if (map->disabled)
-                continue;
-
-            ist = &input_streams[input_files[map->file_index].ist_index + map->stream_index];
-            switch (ist->st->codec->codec_type) {
-            case AVMEDIA_TYPE_VIDEO:    ost = new_video_stream(o, oc);    break;
-            case AVMEDIA_TYPE_AUDIO:    ost = new_audio_stream(o, oc);    break;
-            case AVMEDIA_TYPE_SUBTITLE: ost = new_subtitle_stream(o, oc); break;
-            case AVMEDIA_TYPE_DATA:     ost = new_data_stream(o, oc);     break;
-            case AVMEDIA_TYPE_ATTACHMENT: ost = new_attachment_stream(o, oc); 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);
-            }
-
-            ost->source_index = input_files[map->file_index].ist_index + map->stream_index;
-            ost->sync_ist     = &input_streams[input_files[map->sync_file_index].ist_index +
-                                           map->sync_stream_index];
-            ist->discard = 0;
-        }
-    }
-
-    /* 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);
-        ost->stream_copy               = 0;
-        ost->source_index              = -1;
-        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);
-    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;
-    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 < 0)
-            continue;
-        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, input_files[in_file_index].ctx, 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->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;
-
-        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);
-            }
-            printf("ret %d, stream_spec %s\n", ret, stream_spec);
-        }
-        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);
-}
-
-/* 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, 2);
-    return 0;
-}
-
-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 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);
-
-    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", "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);
-        opt_default("g", norm == PAL ? "15" : "18");
-
-        opt_default("b", "2040000");
-        opt_default("maxrate", "2516000");
-        opt_default("minrate", "0"); // 1145000;
-        opt_default("bufsize", "1835008"); // 224*1024*8;
-        opt_default("flags", "+scan_offset");
-
-
-        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);
-        opt_default("g", norm == PAL ? "15" : "18");
-
-        opt_default("b", "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 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("passlogfile", arg);
-#else
-    return 0;
-#endif
-}
-
-static int opt_video_tag(OptionsContext *o, const char *opt, const char *arg)
-{
-    return parse_option(o, "tag:v", arg, options);
-}
-
-static int opt_audio_tag(OptionsContext *o, const char *opt, const char *arg)
-{
-    return parse_option(o, "tag:a", arg, options);
-}
-
-static int opt_subtitle_tag(OptionsContext *o, const char *opt, const char *arg)
-{
-    return parse_option(o, "tag:s", arg, options);
-}
-
-static int opt_video_filters(OptionsContext *o, const char *opt, const char *arg)
-{
-    return parse_option(o, "filter:v", 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;
-
-    if (video_sync_method == VSYNC_AUTO)
-        video_sync_method = parse_number_or_die("vsync", arg, OPT_INT, VSYNC_AUTO, VSYNC_VFR);
-    return 0;
-}
-
-#define OFFSET(x) offsetof(OptionsContext, x)
-static const OptionDef 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_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" },
-    { "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" },
-    { "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", OPT_BOOL | OPT_EXPERT, {(void*)&copy_tb}, "copy input stream time base when stream copying" },
-    { "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" },
-    { "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_DOUBLE | OPT_SPEC, {.off = OFFSET(qscale)}, "use fixed quality scale (VBR)", "q" },
-#if CONFIG_AVFILTER
-    { "filter", HAS_ARG | OPT_STRING | OPT_SPEC, {.off = OFFSET(filters)}, "set stream filterchain", "filter_list" },
-#endif
-    { "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" },
-
-    /* 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" },
-    { "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" },
-    { "same_quant", OPT_BOOL | OPT_VIDEO, {(void*)&same_quant},
-      "use same quantizer as source (implies VBR)" },
-    { "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_BOOL | OPT_EXPERT | OPT_VIDEO, {(void*)&do_deinterlace},
-      "deinterlace pictures" },
-    { "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" },
-#if CONFIG_AVFILTER
-    { "vf", HAS_ARG | OPT_VIDEO | OPT_FUNC2, {(void*)opt_video_filters}, "video filters", "filter list" },
-#endif
-    { "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_video_tag}, "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" },
-
-    /* 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_audio_tag}, "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" },
-
-    /* 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_subtitle_tag}, "force subtitle tag/fourcc", "fourcc/tag" },
-
-    /* grab options */
-    { "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" },
-
-    /* data codec support */
-    { "dcodec", HAS_ARG | OPT_DATA | OPT_FUNC2, {(void*)opt_data_codec}, "force data codec ('copy' to copy stream)", "codec" },
-
-    { "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;
-
-    reset_options(&o);
-
-    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
-#if CONFIG_AVFILTER
-    avfilter_register_all();
-#endif
-    av_register_all();
-    avformat_network_init();
-
-    show_banner(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) {
-        fprintf(stderr, "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);
-    }
-
-    ti = getutime();
-    if (transcode(output_files, nb_output_files, input_files, nb_input_files) < 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;
-}
index 03753be..07d473e 100755 (executable)
--- a/configure
+++ b/configure
@@ -81,7 +81,6 @@ Configuration options:
                            and binaries will be unredistributable [no]
   --disable-doc            do not build documentation
   --disable-ffmpeg         disable ffmpeg build
-  --enable-avconv          enable  avconv build
   --disable-ffplay         disable ffplay build
   --disable-ffprobe        disable ffprobe build
   --disable-ffserver       disable ffserver build
@@ -997,7 +996,6 @@ PROGRAM_LIST="
 CONFIG_LIST="
     $COMPONENT_LIST
     $PROGRAM_LIST
-    avconv
     avplay
     avprobe
     avserver
@@ -1673,7 +1671,6 @@ avformat_deps="avcodec"
 postproc_deps="gpl"
 
 # programs
-avconv_deps="avcodec avformat swscale"
 ffplay_deps="avcodec avformat swscale sdl"
 ffplay_select="buffersink_filter rdft"
 ffprobe_deps="avcodec avformat"
diff --git a/doc/avconv.texi b/doc/avconv.texi
deleted file mode 100644 (file)
index 85c1457..0000000
+++ /dev/null
@@ -1,1063 +0,0 @@
-\input texinfo @c -*- texinfo -*-
-
-@settitle avconv Documentation
-@titlepage
-@center @titlefont{avconv Documentation}
-@end titlepage
-
-@top
-
-@contents
-
-@chapter Synopsis
-
-The generic syntax is:
-
-@example
-@c man begin SYNOPSIS
-avconv [global options] [[infile options][@option{-i} @var{infile}]]... @{[outfile options] @var{outfile}@}...
-@c man end
-@end example
-
-@chapter Description
-@c man begin DESCRIPTION
-
-avconv is a very fast video and audio converter that can also grab from
-a live audio/video source. It can also convert between arbitrary sample
-rates and resize video on the fly with a high quality polyphase filter.
-
-avconv reads from an arbitrary number of input "files" (which can be regular
-files, pipes, network streams, grabbing devices, etc.), specified by the
-@code{-i} option, and writes to an arbitrary number of output "files", which are
-specified by a plain output filename. Anything found on the command line which
-cannot be interpreted as an option is considered to be an output filename.
-
-Each input or output file can in principle contain any number of streams of
-different types (video/audio/subtitle/attachment/data). Allowed number and/or
-types of streams can be limited by the container format. Selecting, which
-streams from which inputs go into output, is done either automatically or with
-the @code{-map} option (see the Stream selection chapter).
-
-To refer to input files in options, you must use their indices (0-based). E.g.
-the first input file is @code{0}, the second is @code{1} etc. Similarly, streams
-within a file are referred to by their indices. E.g. @code{2:3} refers to the
-fourth stream in the third input file. See also the Stream specifiers chapter.
-
-As a general rule, options are applied to the next specified
-file. Therefore, order is important, and you can have the same
-option on the command line multiple times. Each occurrence is
-then applied to the next input or output file.
-Exceptions from this rule are the global options (e.g. verbosity level),
-which should be specified first.
-
-Do not mix input and output files -- first specify all input files, then all
-output files. Also do not mix options which belong to different files. All
-options apply ONLY to the next input or output file and are reset between files.
-
-@itemize
-@item
-To set the video bitrate of the output file to 64kbit/s:
-@example
-avconv -i input.avi -b 64k output.avi
-@end example
-
-@item
-To force the frame rate of the output file to 24 fps:
-@example
-avconv -i input.avi -r 24 output.avi
-@end example
-
-@item
-To force the frame rate of the input file (valid for raw formats only)
-to 1 fps and the frame rate of the output file to 24 fps:
-@example
-avconv -r 1 -i input.m2v -r 24 output.avi
-@end example
-@end itemize
-
-The format option may be needed for raw input files.
-
-@c man end DESCRIPTION
-
-@chapter Stream selection
-@c man begin STREAM SELECTION
-
-By default avconv tries to pick the "best" stream of each type present in input
-files and add them to each output file. For video, this means the highest
-resolution, for audio the highest channel count. For subtitle it's simply the
-first subtitle stream.
-
-You can disable some of those defaults by using @code{-vn/-an/-sn} options. For
-full manual control, use the @code{-map} option, which disables the defaults just
-described.
-
-@c man end STREAM SELECTION
-
-@chapter Options
-@c man begin OPTIONS
-
-@include avtools-common-opts.texi
-
-@section Main options
-
-@table @option
-
-@item -f @var{fmt} (@emph{input/output})
-Force input or output file format. The format is normally autodetected for input
-files and guessed from file extension for output files, so this option is not
-needed in most cases.
-
-@item -i @var{filename} (@emph{input})
-input file name
-
-@item -y (@emph{global})
-Overwrite output files without asking.
-
-@item -n (@emph{global})
-Do not overwrite output files but exit if file exists.
-
-@item -c[:@var{stream_specifier}] @var{codec} (@emph{input/output,per-stream})
-@itemx -codec[:@var{stream_specifier}] @var{codec} (@emph{input/output,per-stream})
-Select an encoder (when used before an output file) or a decoder (when used
-before an input file) for one or more streams. @var{codec} is the name of a
-decoder/encoder or a special value @code{copy} (output only) to indicate that
-the stream is not to be reencoded.
-
-For example
-@example
-avconv -i INPUT -map 0 -c:v libx264 -c:a copy OUTPUT
-@end example
-encodes all video streams with libx264 and copies all audio streams.
-
-For each stream, the last matching @code{c} option is applied, so
-@example
-avconv -i INPUT -map 0 -c copy -c:v:1 libx264 -c:a:137 libvorbis OUTPUT
-@end example
-will copy all the streams except the second video, which will be encoded with
-libx264, and the 138th audio, which will be encoded with libvorbis.
-
-@item -t @var{duration} (@emph{output})
-Stop writing the output after its duration reaches @var{duration}.
-@var{duration} may be a number in seconds, or in @code{hh:mm:ss[.xxx]} form.
-
-@item -fs @var{limit_size} (@emph{output})
-Set the file size limit.
-
-@item -ss @var{position} (@emph{input/output})
-When used as an input option (before @code{-i}), seeks in this input file to
-@var{position}. When used as an output option (before an output filename),
-decodes but discards input until the timestamps reach @var{position}. This is
-slower, but more accurate.
-
-@var{position} may be either in seconds or in @code{hh:mm:ss[.xxx]} form.
-
-@item -itsoffset @var{offset} (@emph{input})
-Set the input time offset in seconds.
-@code{[-]hh:mm:ss[.xxx]} syntax is also supported.
-The offset is added to the timestamps of the input files.
-Specifying a positive offset means that the corresponding
-streams are delayed by @var{offset} seconds.
-
-@item -metadata[:metadata_specifier] @var{key}=@var{value} (@emph{output,per-metadata})
-Set a metadata key/value pair.
-
-An optional @var{metadata_specifier} may be given to set metadata
-on streams or chapters. See @code{-map_metadata} documentation for
-details.
-
-This option overrides metadata set with @code{-map_metadata}. It is
-also possible to delete metadata by using an empty value.
-
-For example, for setting the title in the output file:
-@example
-avconv -i in.avi -metadata title="my title" out.flv
-@end example
-
-To set the language of the first audio stream:
-@example
-avconv -i INPUT -metadata:s:a:0 language=eng OUTPUT
-@end example
-
-@item -target @var{type} (@emph{output})
-Specify target file type (@code{vcd}, @code{svcd}, @code{dvd}, @code{dv},
-@code{dv50}). @var{type} may be prefixed with @code{pal-}, @code{ntsc-} or
-@code{film-} to use the corresponding standard. All the format options
-(bitrate, codecs, buffer sizes) are then set automatically. You can just type:
-
-@example
-avconv -i myfile.avi -target vcd /tmp/vcd.mpg
-@end example
-
-Nevertheless you can specify additional options as long as you know
-they do not conflict with the standard, as in:
-
-@example
-avconv -i myfile.avi -target vcd -bf 2 /tmp/vcd.mpg
-@end example
-
-@item -dframes @var{number} (@emph{output})
-Set the number of data frames to record. This is an alias for @code{-frames:d}.
-
-@item -frames[:@var{stream_specifier}] @var{framecount} (@emph{output,per-stream})
-Stop writing to the stream after @var{framecount} frames.
-
-@item -q[:@var{stream_specifier}] @var{q} (@emph{output,per-stream})
-@itemx -qscale[:@var{stream_specifier}] @var{q} (@emph{output,per-stream})
-Use fixed quality scale (VBR). The meaning of @var{q} is
-codec-dependent.
-
-@item -filter[:@var{stream_specifier}] @var{filter_graph} (@emph{output,per-stream})
-@var{filter_graph} is a description of the filter graph to apply to
-the stream. Use @code{-filters} to show all the available filters
-(including also sources and sinks).
-@item -pre[:@var{stream_specifier}] @var{preset_name} (@emph{output,per-stream})
-Specify the preset for matching stream(s).
-
-@item -stats (@emph{global})
-Print encoding progress/statistics. On by default.
-
-@item -attach @var{filename} (@emph{output})
-Add an attachment to the output file. This is supported by a few formats
-like Matroska for e.g. fonts used in rendering subtitles. Attachments
-are implemented as a specific type of stream, so this option will add
-a new stream to the file. It is then possible to use per-stream options
-on this stream in the usual way. Attachment streams created with this
-option will be created after all the other streams (i.e. those created
-with @code{-map} or automatic mappings).
-
-Note that for Matroska you also have to set the mimetype metadata tag:
-@example
-avconv -i INPUT -attach DejaVuSans.ttf -metadata:s:2 mimetype=application/x-truetype-font out.mkv
-@end example
-(assuming that the attachment stream will be third in the output file).
-
-@item -dump_attachment[:@var{stream_specifier}] @var{filename} (@emph{input,per-stream})
-Extract the matching attachment stream into a file named @var{filename}. If
-@var{filename} is empty, then the value of the @code{filename} metadata tag
-will be used.
-
-E.g. to extract the first attachment to a file named 'out.ttf':
-@example
-avconv -dump_attachment:t:0 out.ttf INPUT
-@end example
-To extract all attachments to files determined by the @code{filename} tag:
-@example
-avconv -dump_attachment:t "" INPUT
-@end example
-
-Technical note -- attachments are implemented as codec extradata, so this
-option can actually be used to extract extradata from any stream, not just
-attachments.
-
-@end table
-
-@section Video Options
-
-@table @option
-@item -vframes @var{number} (@emph{output})
-Set the number of video frames to record. This is an alias for @code{-frames:v}.
-@item -r[:@var{stream_specifier}] @var{fps} (@emph{input/output,per-stream})
-Set frame rate (Hz value, fraction or abbreviation), (default = 25).
-@item -s[:@var{stream_specifier}] @var{size} (@emph{input/output,per-stream})
-Set frame size. The format is @samp{wxh} (default - same as source).
-The following abbreviations are recognized:
-@table @samp
-@item sqcif
-128x96
-@item qcif
-176x144
-@item cif
-352x288
-@item 4cif
-704x576
-@item 16cif
-1408x1152
-@item qqvga
-160x120
-@item qvga
-320x240
-@item vga
-640x480
-@item svga
-800x600
-@item xga
-1024x768
-@item uxga
-1600x1200
-@item qxga
-2048x1536
-@item sxga
-1280x1024
-@item qsxga
-2560x2048
-@item hsxga
-5120x4096
-@item wvga
-852x480
-@item wxga
-1366x768
-@item wsxga
-1600x1024
-@item wuxga
-1920x1200
-@item woxga
-2560x1600
-@item wqsxga
-3200x2048
-@item wquxga
-3840x2400
-@item whsxga
-6400x4096
-@item whuxga
-7680x4800
-@item cga
-320x200
-@item ega
-640x350
-@item hd480
-852x480
-@item hd720
-1280x720
-@item hd1080
-1920x1080
-@end table
-
-@item -aspect[:@var{stream_specifier}] @var{aspect} (@emph{output,per-stream})
-Set the video display aspect ratio specified by @var{aspect}.
-
-@var{aspect} can be a floating point number string, or a string of the
-form @var{num}:@var{den}, where @var{num} and @var{den} are the
-numerator and denominator of the aspect ratio. For example "4:3",
-"16:9", "1.3333", and "1.7777" are valid argument values.
-
-@item -vn (@emph{output})
-Disable video recording.
-@item -bt @var{tolerance}
-Set video bitrate tolerance (in bits, default 4000k).
-Has a minimum value of: (target_bitrate/target_framerate).
-In 1-pass mode, bitrate tolerance specifies how far ratecontrol is
-willing to deviate from the target average bitrate value. This is
-not related to min/max bitrate. Lowering tolerance too much has
-an adverse effect on quality.
-@item -maxrate @var{bitrate}
-Set max video bitrate (in bit/s).
-Requires -bufsize to be set.
-@item -minrate @var{bitrate}
-Set min video bitrate (in bit/s).
-Most useful in setting up a CBR encode:
-@example
-avconv -i myfile.avi -b 4000k -minrate 4000k -maxrate 4000k -bufsize 1835k out.m2v
-@end example
-It is of little use elsewise.
-@item -bufsize @var{size}
-Set video buffer verifier buffer size (in bits).
-@item -vcodec @var{codec} (@emph{output})
-Set the video codec. This is an alias for @code{-codec:v}.
-@item -same_quant
-Use same quantizer as source (implies VBR).
-
-Note that this is NOT SAME QUALITY. Do not use this option unless you know you
-need it.
-
-@item -pass @var{n}
-Select the pass number (1 or 2). It is used to do two-pass
-video encoding. The statistics of the video are recorded in the first
-pass into a log file (see also the option -passlogfile),
-and in the second pass that log file is used to generate the video
-at the exact requested bitrate.
-On pass 1, you may just deactivate audio and set output to null,
-examples for Windows and Unix:
-@example
-avconv -i foo.mov -c:v libxvid -pass 1 -an -f rawvideo -y NUL
-avconv -i foo.mov -c:v libxvid -pass 1 -an -f rawvideo -y /dev/null
-@end example
-
-@item -passlogfile @var{prefix} (@emph{global})
-Set two-pass log file name prefix to @var{prefix}, the default file name
-prefix is ``av2pass''. The complete file name will be
-@file{PREFIX-N.log}, where N is a number specific to the output
-stream.
-
-@item -vf @var{filter_graph} (@emph{output})
-@var{filter_graph} is a description of the filter graph to apply to
-the input video.
-Use the option "-filters" to show all the available filters (including
-also sources and sinks).  This is an alias for @code{-filter:v}.
-
-@end table
-
-@section Advanced Video Options
-
-@table @option
-@item -pix_fmt[:@var{stream_specifier}] @var{format} (@emph{input/output,per-stream})
-Set pixel format. Use @code{-pix_fmts} to show all the supported
-pixel formats.
-@item -sws_flags @var{flags} (@emph{input/output})
-Set SwScaler flags.
-@item -g @var{gop_size}
-Set the group of pictures size.
-@item -vdt @var{n}
-Discard threshold.
-@item -qmin @var{q}
-minimum video quantizer scale (VBR)
-@item -qmax @var{q}
-maximum video quantizer scale (VBR)
-@item -qdiff @var{q}
-maximum difference between the quantizer scales (VBR)
-@item -qblur @var{blur}
-video quantizer scale blur (VBR) (range 0.0 - 1.0)
-@item -qcomp @var{compression}
-video quantizer scale compression (VBR) (default 0.5).
-Constant of ratecontrol equation. Recommended range for default rc_eq: 0.0-1.0
-
-@item -lmin @var{lambda}
-minimum video lagrange factor (VBR)
-@item -lmax @var{lambda}
-max video lagrange factor (VBR)
-@item -mblmin @var{lambda}
-minimum macroblock quantizer scale (VBR)
-@item -mblmax @var{lambda}
-maximum macroblock quantizer scale (VBR)
-
-These four options (lmin, lmax, mblmin, mblmax) use 'lambda' units,
-but you may use the QP2LAMBDA constant to easily convert from 'q' units:
-@example
-avconv -i src.ext -lmax 21*QP2LAMBDA dst.ext
-@end example
-
-@item -rc_init_cplx @var{complexity}
-initial complexity for single pass encoding
-@item -b_qfactor @var{factor}
-qp factor between P- and B-frames
-@item -i_qfactor @var{factor}
-qp factor between P- and I-frames
-@item -b_qoffset @var{offset}
-qp offset between P- and B-frames
-@item -i_qoffset @var{offset}
-qp offset between P- and I-frames
-@item -rc_eq @var{equation}
-Set rate control equation (see section "Expression Evaluation")
-(default = @code{tex^qComp}).
-
-When computing the rate control equation expression, besides the
-standard functions defined in the section "Expression Evaluation", the
-following functions are available:
-@table @var
-@item bits2qp(bits)
-@item qp2bits(qp)
-@end table
-
-and the following constants are available:
-@table @var
-@item iTex
-@item pTex
-@item tex
-@item mv
-@item fCode
-@item iCount
-@item mcVar
-@item var
-@item isI
-@item isP
-@item isB
-@item avgQP
-@item qComp
-@item avgIITex
-@item avgPITex
-@item avgPPTex
-@item avgBPTex
-@item avgTex
-@end table
-
-@item -rc_override[:@var{stream_specifier}] @var{override} (@emph{output,per-stream})
-rate control override for specific intervals
-@item -me_method @var{method}
-Set motion estimation method to @var{method}.
-Available methods are (from lowest to best quality):
-@table @samp
-@item zero
-Try just the (0, 0) vector.
-@item phods
-@item log
-@item x1
-@item hex
-@item umh
-@item epzs
-(default method)
-@item full
-exhaustive search (slow and marginally better than epzs)
-@end table
-
-@item -er @var{n}
-Set error resilience to @var{n}.
-@table @samp
-@item 1
-FF_ER_CAREFUL (default)
-@item 2
-FF_ER_COMPLIANT
-@item 3
-FF_ER_AGGRESSIVE
-@item 4
-FF_ER_VERY_AGGRESSIVE
-@end table
-
-@item -ec @var{bit_mask}
-Set error concealment to @var{bit_mask}. @var{bit_mask} is a bit mask of
-the following values:
-@table @samp
-@item 1
-FF_EC_GUESS_MVS (default = enabled)
-@item 2
-FF_EC_DEBLOCK (default = enabled)
-@end table
-
-@item -bf @var{frames}
-Use 'frames' B-frames (supported for MPEG-1, MPEG-2 and MPEG-4).
-@item -mbd @var{mode}
-macroblock decision
-@table @samp
-@item 0
-FF_MB_DECISION_SIMPLE: Use mb_cmp (cannot change it yet in avconv).
-@item 1
-FF_MB_DECISION_BITS: Choose the one which needs the fewest bits.
-@item 2
-FF_MB_DECISION_RD: rate distortion
-@end table
-
-@item -bug @var{param}
-Work around encoder bugs that are not auto-detected.
-@item -strict @var{strictness}
-How strictly to follow the standards.
-
-@item -deinterlace
-Deinterlace pictures.
-@item -vstats
-Dump video coding statistics to @file{vstats_HHMMSS.log}.
-@item -vstats_file @var{file}
-Dump video coding statistics to @var{file}.
-@item -top[:@var{stream_specifier}] @var{n} (@emph{output,per-stream})
-top=1/bottom=0/auto=-1 field first
-@item -dc @var{precision}
-Intra_dc_precision.
-@item -vtag @var{fourcc/tag} (@emph{output})
-Force video tag/fourcc. This is an alias for @code{-tag:v}.
-@item -qphist (@emph{global})
-Show QP histogram.
-@item -force_key_frames[:@var{stream_specifier}] @var{time}[,@var{time}...] (@emph{output,per-stream})
-Force key frames at the specified timestamps, more precisely at the first
-frames after each specified time.
-This option can be useful to ensure that a seek point is present at a
-chapter mark or any other designated place in the output file.
-The timestamps must be specified in ascending order.
-
-@item -copyinkf[:@var{stream_specifier}] (@emph{output,per-stream})
-When doing stream copy, copy also non-key frames found at the
-beginning.
-@end table
-
-@section Audio Options
-
-@table @option
-@item -aframes @var{number} (@emph{output})
-Set the number of audio frames to record. This is an alias for @code{-frames:a}.
-@item -ar[:@var{stream_specifier}] @var{freq} (@emph{input/output,per-stream})
-Set the audio sampling frequency. For output streams it is set by
-default to the frequency of the corresponding input stream. For input
-streams this option only makes sense for audio grabbing devices and raw
-demuxers and is mapped to the corresponding demuxer options.
-@item -aq @var{q} (@emph{output})
-Set the audio quality (codec-specific, VBR). This is an alias for -q:a.
-@item -ac[:@var{stream_specifier}] @var{channels} (@emph{input/output,per-stream})
-Set the number of audio channels. For output streams it is set by
-default to the number of input audio channels. For input streams
-this option only makes sense for audio grabbing devices and raw demuxers
-and is mapped to the corresponding demuxer options.
-@item -an (@emph{output})
-Disable audio recording.
-@item -acodec @var{codec} (@emph{input/output})
-Set the audio codec. This is an alias for @code{-codec:a}.
-@item -sample_fmt[:@var{stream_specifier}] @var{sample_fmt} (@emph{output,per-stream})
-Set the audio sample format. Use @code{-sample_fmts} to get a list
-of supported sample formats.
-@end table
-
-@section Advanced Audio options:
-
-@table @option
-@item -atag @var{fourcc/tag} (@emph{output})
-Force audio tag/fourcc. This is an alias for @code{-tag:a}.
-@item -audio_service_type @var{type}
-Set the type of service that the audio stream contains.
-@table @option
-@item ma
-Main Audio Service (default)
-@item ef
-Effects
-@item vi
-Visually Impaired
-@item hi
-Hearing Impaired
-@item di
-Dialogue
-@item co
-Commentary
-@item em
-Emergency
-@item vo
-Voice Over
-@item ka
-Karaoke
-@end table
-@end table
-
-@section Subtitle options:
-
-@table @option
-@item -scodec @var{codec} (@emph{input/output})
-Set the subtitle codec. This is an alias for @code{-codec:s}.
-@item -sn (@emph{output})
-Disable subtitle recording.
-@end table
-
-@section Audio/Video grab options
-
-@table @option
-@item -isync (@emph{global})
-Synchronize read on input.
-@end table
-
-@section Advanced options
-
-@table @option
-@item -map [-]@var{input_file_id}[:@var{stream_specifier}][,@var{sync_file_id}[:@var{stream_specifier}]] (@emph{output})
-
-Designate one or more input streams as a source for the output file. Each input
-stream is identified by the input file index @var{input_file_id} and
-the input stream index @var{input_stream_id} within the input
-file. Both indices start at 0. If specified,
-@var{sync_file_id}:@var{stream_specifier} sets which input stream
-is used as a presentation sync reference.
-
-The first @code{-map} option on the command line specifies the
-source for output stream 0, the second @code{-map} option specifies
-the source for output stream 1, etc.
-
-A @code{-} character before the stream identifier creates a "negative" mapping.
-It disables matching streams from already created mappings.
-
-For example, to map ALL streams from the first input file to output
-@example
-avconv -i INPUT -map 0 output
-@end example
-
-For example, if you have two audio streams in the first input file,
-these streams are identified by "0:0" and "0:1". You can use
-@code{-map} to select which streams to place in an output file. For
-example:
-@example
-avconv -i INPUT -map 0:1 out.wav
-@end example
-will map the input stream in @file{INPUT} identified by "0:1" to
-the (single) output stream in @file{out.wav}.
-
-For example, to select the stream with index 2 from input file
-@file{a.mov} (specified by the identifier "0:2"), and stream with
-index 6 from input @file{b.mov} (specified by the identifier "1:6"),
-and copy them to the output file @file{out.mov}:
-@example
-avconv -i a.mov -i b.mov -c copy -map 0:2 -map 1:6 out.mov
-@end example
-
-To select all video and the third audio stream from an input file:
-@example
-avconv -i INPUT -map 0:v -map 0:a:2 OUTPUT
-@end example
-
-To map all the streams except the second audio, use negative mappings
-@example
-avconv -i INPUT -map 0 -map -0:a:1 OUTPUT
-@end example
-
-Note that using this option disables the default mappings for this output file.
-
-@item -map_metadata[:@var{metadata_spec_out}] @var{infile}[:@var{metadata_spec_in}] (@emph{output,per-metadata})
-Set metadata information of the next output file from @var{infile}. Note that
-those are file indices (zero-based), not filenames.
-Optional @var{metadata_spec_in/out} parameters specify, which metadata to copy.
-A metadata specifier can have the following forms:
-@table @option
-@item @var{g}
-global metadata, i.e. metadata that applies to the whole file
-
-@item @var{s}[:@var{stream_spec}]
-per-stream metadata. @var{stream_spec} is a stream specifier as described
-in the @ref{Stream specifiers} chapter. In an input metadata specifier, the first
-matching stream is copied from. In an output metadata specifier, all matching
-streams are copied to.
-
-@item @var{c}:@var{chapter_index}
-per-chapter metadata. @var{chapter_index} is the zero-based chapter index.
-
-@item @var{p}:@var{program_index}
-per-program metadata. @var{program_index} is the zero-based program index.
-@end table
-If metadata specifier is omitted, it defaults to global.
-
-By default, global metadata is copied from the first input file,
-per-stream and per-chapter metadata is copied along with streams/chapters. These
-default mappings are disabled by creating any mapping of the relevant type. A negative
-file index can be used to create a dummy mapping that just disables automatic copying.
-
-For example to copy metadata from the first stream of the input file to global metadata
-of the output file:
-@example
-avconv -i in.ogg -map_metadata 0:s:0 out.mp3
-@end example
-
-To do the reverse, i.e. copy global metadata to all audio streams:
-@example
-avconv -i in.mkv -map_metadata:s:a 0:g out.mkv
-@end example
-Note that simple @code{0} would work as well in this example, since global
-metadata is assumed by default.
-
-@item -map_chapters @var{input_file_index} (@emph{output})
-Copy chapters from input file with index @var{input_file_index} to the next
-output file. If no chapter mapping is specified, then chapters are copied from
-the first input file with at least one chapter. Use a negative file index to
-disable any chapter copying.
-@item -debug
-Print specific debug info.
-@item -benchmark (@emph{global})
-Show benchmarking information at the end of an encode.
-Shows CPU time used and maximum memory consumption.
-Maximum memory consumption is not supported on all systems,
-it will usually display as 0 if not supported.
-@item -timelimit @var{duration} (@emph{global})
-Exit after avconv has been running for @var{duration} seconds.
-@item -dump (@emph{global})
-Dump each input packet to stderr.
-@item -hex (@emph{global})
-When dumping packets, also dump the payload.
-@item -ps @var{size}
-Set RTP payload size in bytes.
-@item -re (@emph{input})
-Read input at native frame rate. Mainly used to simulate a grab device.
-@item -threads @var{count}
-Thread count.
-@item -vsync @var{parameter}
-Video sync method.
-
-@table @option
-@item passthrough
-Each frame is passed with its timestamp from the demuxer to the muxer.
-@item cfr
-Frames will be duplicated and dropped to achieve exactly the requested
-constant framerate.
-@item vfr
-Frames are passed through with their timestamp or dropped so as to
-prevent 2 frames from having the same timestamp.
-@item auto
-Chooses between 1 and 2 depending on muxer capabilities. This is the
-default method.
-@end table
-
-With -map you can select from which stream the timestamps should be
-taken. You can leave either video or audio unchanged and sync the
-remaining stream(s) to the unchanged one.
-
-@item -async @var{samples_per_second}
-Audio sync method. "Stretches/squeezes" the audio stream to match the timestamps,
-the parameter is the maximum samples per second by which the audio is changed.
--async 1 is a special case where only the start of the audio stream is corrected
-without any later correction.
-@item -copyts
-Copy timestamps from input to output.
-@item -copytb
-Copy input stream time base from input to output when stream copying.
-@item -shortest
-Finish encoding when the shortest input stream ends.
-@item -dts_delta_threshold
-Timestamp discontinuity delta threshold.
-@item -muxdelay @var{seconds} (@emph{input})
-Set the maximum demux-decode delay.
-@item -muxpreload @var{seconds} (@emph{input})
-Set the initial demux-decode delay.
-@item -streamid @var{output-stream-index}:@var{new-value} (@emph{output})
-Assign a new stream-id value to an output stream. This option should be
-specified prior to the output filename to which it applies.
-For the situation where multiple output files exist, a streamid
-may be reassigned to a different value.
-
-For example, to set the stream 0 PID to 33 and the stream 1 PID to 36 for
-an output mpegts file:
-@example
-avconv -i infile -streamid 0:33 -streamid 1:36 out.ts
-@end example
-
-@item -bsf[:@var{stream_specifier}] @var{bitstream_filters} (@emph{output,per-stream})
-Set bitstream filters for matching streams. @var{bistream_filters} is
-a comma-separated list of bitstream filters. Use the @code{-bsfs} option
-to get the list of bitstream filters.
-@example
-avconv -i h264.mp4 -c:v copy -vbsf h264_mp4toannexb -an out.h264
-@end example
-@example
-avconv -i file.mov -an -vn -sbsf mov2textsub -c:s copy -f rawvideo sub.txt
-@end example
-
-@item -tag[:@var{stream_specifier}] @var{codec_tag} (@emph{output,per-stream})
-Force a tag/fourcc for matching streams.
-@end table
-@c man end OPTIONS
-
-@chapter Tips
-@c man begin TIPS
-
-@itemize
-@item
-For streaming at very low bitrate application, use a low frame rate
-and a small GOP size. This is especially true for RealVideo where
-the Linux player does not seem to be very fast, so it can miss
-frames. An example is:
-
-@example
-avconv -g 3 -r 3 -t 10 -b 50k -s qcif -f rv10 /tmp/b.rm
-@end example
-
-@item
-The parameter 'q' which is displayed while encoding is the current
-quantizer. The value 1 indicates that a very good quality could
-be achieved. The value 31 indicates the worst quality. If q=31 appears
-too often, it means that the encoder cannot compress enough to meet
-your bitrate. You must either increase the bitrate, decrease the
-frame rate or decrease the frame size.
-
-@item
-If your computer is not fast enough, you can speed up the
-compression at the expense of the compression ratio. You can use
-'-me zero' to speed up motion estimation, and '-intra' to disable
-motion estimation completely (you have only I-frames, which means it
-is about as good as JPEG compression).
-
-@item
-To have very low audio bitrates, reduce the sampling frequency
-(down to 22050 Hz for MPEG audio, 22050 or 11025 for AC-3).
-
-@item
-To have a constant quality (but a variable bitrate), use the option
-'-qscale n' when 'n' is between 1 (excellent quality) and 31 (worst
-quality).
-
-@end itemize
-@c man end TIPS
-
-@chapter Examples
-@c man begin EXAMPLES
-
-@section Preset files
-
-A preset file contains a sequence of @var{option=value} pairs, one for
-each line, specifying a sequence of options which can be specified also on
-the command line. Lines starting with the hash ('#') character are ignored and
-are used to provide comments. Empty lines are also ignored. Check the
-@file{presets} directory in the Libav source tree for examples.
-
-Preset files are specified with the @code{pre} option, this option takes a
-preset name as input.  Avconv searches for a file named @var{preset_name}.avpreset in
-the directories @file{$AVCONV_DATADIR} (if set), and @file{$HOME/.avconv}, and in
-the data directory defined at configuration time (usually @file{$PREFIX/share/avconv})
-in that order.  For example, if the argument is @code{libx264-max}, it will
-search for the file @file{libx264-max.avpreset}.
-
-@section Video and Audio grabbing
-
-If you specify the input format and device then avconv can grab video
-and audio directly.
-
-@example
-avconv -f oss -i /dev/dsp -f video4linux2 -i /dev/video0 /tmp/out.mpg
-@end example
-
-Note that you must activate the right video source and channel before
-launching avconv with any TV viewer such as
-@uref{http://linux.bytesex.org/xawtv/, xawtv} by Gerd Knorr. You also
-have to set the audio recording levels correctly with a
-standard mixer.
-
-@section X11 grabbing
-
-Grab the X11 display with avconv via
-
-@example
-avconv -f x11grab -s cif -r 25 -i :0.0 /tmp/out.mpg
-@end example
-
-0.0 is display.screen number of your X11 server, same as
-the DISPLAY environment variable.
-
-@example
-avconv -f x11grab -s cif -r 25 -i :0.0+10,20 /tmp/out.mpg
-@end example
-
-0.0 is display.screen number of your X11 server, same as the DISPLAY environment
-variable. 10 is the x-offset and 20 the y-offset for the grabbing.
-
-@section Video and Audio file format conversion
-
-Any supported file format and protocol can serve as input to avconv:
-
-Examples:
-@itemize
-@item
-You can use YUV files as input:
-
-@example
-avconv -i /tmp/test%d.Y /tmp/out.mpg
-@end example
-
-It will use the files:
-@example
-/tmp/test0.Y, /tmp/test0.U, /tmp/test0.V,
-/tmp/test1.Y, /tmp/test1.U, /tmp/test1.V, etc...
-@end example
-
-The Y files use twice the resolution of the U and V files. They are
-raw files, without header. They can be generated by all decent video
-decoders. You must specify the size of the image with the @option{-s} option
-if avconv cannot guess it.
-
-@item
-You can input from a raw YUV420P file:
-
-@example
-avconv -i /tmp/test.yuv /tmp/out.avi
-@end example
-
-test.yuv is a file containing raw YUV planar data. Each frame is composed
-of the Y plane followed by the U and V planes at half vertical and
-horizontal resolution.
-
-@item
-You can output to a raw YUV420P file:
-
-@example
-avconv -i mydivx.avi hugefile.yuv
-@end example
-
-@item
-You can set several input files and output files:
-
-@example
-avconv -i /tmp/a.wav -s 640x480 -i /tmp/a.yuv /tmp/a.mpg
-@end example
-
-Converts the audio file a.wav and the raw YUV video file a.yuv
-to MPEG file a.mpg.
-
-@item
-You can also do audio and video conversions at the same time:
-
-@example
-avconv -i /tmp/a.wav -ar 22050 /tmp/a.mp2
-@end example
-
-Converts a.wav to MPEG audio at 22050 Hz sample rate.
-
-@item
-You can encode to several formats at the same time and define a
-mapping from input stream to output streams:
-
-@example
-avconv -i /tmp/a.wav -map 0:a -b 64k /tmp/a.mp2 -map 0:a -b 128k /tmp/b.mp2
-@end example
-
-Converts a.wav to a.mp2 at 64 kbits and to b.mp2 at 128 kbits. '-map
-file:index' specifies which input stream is used for each output
-stream, in the order of the definition of output streams.
-
-@item
-You can transcode decrypted VOBs:
-
-@example
-avconv -i snatch_1.vob -f avi -c:v mpeg4 -b:v 800k -g 300 -bf 2 -c:a libmp3lame -b:a 128k snatch.avi
-@end example
-
-This is a typical DVD ripping example; the input is a VOB file, the
-output an AVI file with MPEG-4 video and MP3 audio. Note that in this
-command we use B-frames so the MPEG-4 stream is DivX5 compatible, and
-GOP size is 300 which means one intra frame every 10 seconds for 29.97fps
-input video. Furthermore, the audio stream is MP3-encoded so you need
-to enable LAME support by passing @code{--enable-libmp3lame} to configure.
-The mapping is particularly useful for DVD transcoding
-to get the desired audio language.
-
-NOTE: To see the supported input formats, use @code{avconv -formats}.
-
-@item
-You can extract images from a video, or create a video from many images:
-
-For extracting images from a video:
-@example
-avconv -i foo.avi -r 1 -s WxH -f image2 foo-%03d.jpeg
-@end example
-
-This will extract one video frame per second from the video and will
-output them in files named @file{foo-001.jpeg}, @file{foo-002.jpeg},
-etc. Images will be rescaled to fit the new WxH values.
-
-If you want to extract just a limited number of frames, you can use the
-above command in combination with the -vframes or -t option, or in
-combination with -ss to start extracting from a certain point in time.
-
-For creating a video from many images:
-@example
-avconv -f image2 -i foo-%03d.jpeg -r 12 -s WxH foo.avi
-@end example
-
-The syntax @code{foo-%03d.jpeg} specifies to use a decimal number
-composed of three digits padded with zeroes to express the sequence
-number. It is the same syntax supported by the C printf function, but
-only formats accepting a normal integer are suitable.
-
-@item
-You can put many streams of the same type in the output:
-
-@example
-avconv -i test1.avi -i test2.avi -map 0.3 -map 0.2 -map 0.1 -map 0.0 -c copy test12.nut
-@end example
-
-The resulting output file @file{test12.avi} will contain first four streams from
-the input file in reverse order.
-
-@end itemize
-@c man end EXAMPLES
-
-@include eval.texi
-@include encoders.texi
-@include demuxers.texi
-@include muxers.texi
-@include indevs.texi
-@include outdevs.texi
-@include protocols.texi
-@include bitstream_filters.texi
-@include filters.texi
-@include metadata.texi
-
-@ignore
-
-@setfilename avconv
-@settitle avconv video converter
-
-@c man begin SEEALSO
-ffplay(1), ffprobe(1), ffserver(1) and the FFmpeg HTML documentation
-
-@c man end
-
-@c man begin AUTHORS
-The Libav developers
-@c man end
-
-@end ignore
-
-@bye