Merge remote-tracking branch 'qatar/master'
[ffmpeg.git] / ffmpeg.c
1 /*
2  * Copyright (c) 2000-2003 Fabrice Bellard
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20
21 /**
22  * @file
23  * multimedia converter based on the FFmpeg libraries
24  */
25
26 #include "config.h"
27 #include <ctype.h>
28 #include <string.h>
29 #include <math.h>
30 #include <stdlib.h>
31 #include <errno.h>
32 #include <signal.h>
33 #include <limits.h>
34 #include <unistd.h>
35 #include "libavformat/avformat.h"
36 #include "libavdevice/avdevice.h"
37 #include "libswscale/swscale.h"
38 #include "libavutil/opt.h"
39 #include "libavcodec/audioconvert.h"
40 #include "libavutil/audioconvert.h"
41 #include "libavutil/parseutils.h"
42 #include "libavutil/samplefmt.h"
43 #include "libavutil/colorspace.h"
44 #include "libavutil/fifo.h"
45 #include "libavutil/intreadwrite.h"
46 #include "libavutil/dict.h"
47 #include "libavutil/mathematics.h"
48 #include "libavutil/pixdesc.h"
49 #include "libavutil/avstring.h"
50 #include "libavutil/libm.h"
51 #include "libavutil/imgutils.h"
52 #include "libavformat/os_support.h"
53 #include "libswresample/swresample.h"
54
55 #include "libavformat/ffm.h" // not public API
56
57 #if CONFIG_AVFILTER
58 # include "libavfilter/avcodec.h"
59 # include "libavfilter/avfilter.h"
60 # include "libavfilter/avfiltergraph.h"
61 # include "libavfilter/buffersink.h"
62 # include "libavfilter/buffersrc.h"
63 # include "libavfilter/vsrc_buffer.h"
64 #endif
65
66 #if HAVE_SYS_RESOURCE_H
67 #include <sys/types.h>
68 #include <sys/time.h>
69 #include <sys/resource.h>
70 #elif HAVE_GETPROCESSTIMES
71 #include <windows.h>
72 #endif
73 #if HAVE_GETPROCESSMEMORYINFO
74 #include <windows.h>
75 #include <psapi.h>
76 #endif
77
78 #if HAVE_SYS_SELECT_H
79 #include <sys/select.h>
80 #endif
81
82 #if HAVE_TERMIOS_H
83 #include <fcntl.h>
84 #include <sys/ioctl.h>
85 #include <sys/time.h>
86 #include <termios.h>
87 #elif HAVE_KBHIT
88 #include <conio.h>
89 #endif
90 #include <time.h>
91
92 #include "cmdutils.h"
93
94 #include "libavutil/avassert.h"
95
96 #define VSYNC_AUTO       -1
97 #define VSYNC_PASSTHROUGH 0
98 #define VSYNC_CFR         1
99 #define VSYNC_VFR         2
100 #define VSYNC_DROP        0xff
101
102 const char program_name[] = "ffmpeg";
103 const int program_birth_year = 2000;
104
105 /* select an input stream for an output stream */
106 typedef struct StreamMap {
107     int disabled;           /** 1 is this mapping is disabled by a negative map */
108     int file_index;
109     int stream_index;
110     int sync_file_index;
111     int sync_stream_index;
112 } StreamMap;
113
114 typedef struct {
115     int  file_idx,  stream_idx,  channel_idx; // input
116     int ofile_idx, ostream_idx;               // output
117 } AudioChannelMap;
118
119 /**
120  * select an input file for an output file
121  */
122 typedef struct MetadataMap {
123     int  file;      ///< file index
124     char type;      ///< type of metadata to copy -- (g)lobal, (s)tream, (c)hapter or (p)rogram
125     int  index;     ///< stream/chapter/program number
126 } MetadataMap;
127
128 static const OptionDef options[];
129
130 #define MAX_STREAMS 1024    /* arbitrary sanity check value */
131
132 static int frame_bits_per_raw_sample = 0;
133 static int video_discard = 0;
134 static int same_quant = 0;
135 static int do_deinterlace = 0;
136 static int intra_dc_precision = 8;
137 static int qp_hist = 0;
138 static int intra_only = 0;
139 static const char *video_codec_name    = NULL;
140 static const char *audio_codec_name    = NULL;
141 static const char *subtitle_codec_name = NULL;
142
143 static int file_overwrite = 0;
144 static int no_file_overwrite = 0;
145 static int do_benchmark = 0;
146 static int do_hex_dump = 0;
147 static int do_pkt_dump = 0;
148 static int do_psnr = 0;
149 static int do_pass = 0;
150 static const char *pass_logfilename_prefix;
151 static int video_sync_method = VSYNC_AUTO;
152 static int audio_sync_method = 0;
153 static float audio_drift_threshold = 0.1;
154 static int copy_ts = 0;
155 static int copy_tb = -1;
156 static int opt_shortest = 0;
157 static char *vstats_filename;
158 static FILE *vstats_file;
159
160 static int audio_volume = 256;
161
162 static int exit_on_error = 0;
163 static int using_stdin = 0;
164 static int run_as_daemon  = 0;
165 static volatile int received_nb_signals = 0;
166 static int64_t video_size = 0;
167 static int64_t audio_size = 0;
168 static int64_t extra_size = 0;
169 static int nb_frames_dup = 0;
170 static int nb_frames_drop = 0;
171 static int input_sync;
172
173 static float dts_delta_threshold = 10;
174
175 static int print_stats = 1;
176
177 static uint8_t *audio_buf;
178 static unsigned int allocated_audio_buf_size;
179
180 static uint8_t *input_tmp= NULL;
181
182 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
183
184 typedef struct FrameBuffer {
185     uint8_t *base[4];
186     uint8_t *data[4];
187     int  linesize[4];
188
189     int h, w;
190     enum PixelFormat pix_fmt;
191
192     int refcount;
193     struct InputStream *ist;
194     struct FrameBuffer *next;
195 } FrameBuffer;
196
197 typedef struct InputStream {
198     int file_index;
199     AVStream *st;
200     int discard;             /* true if stream data should be discarded */
201     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
202     AVCodec *dec;
203     AVFrame *decoded_frame;
204     AVFrame *filtered_frame;
205
206     int64_t       start;     /* time when read started */
207     int64_t       next_pts;  /* synthetic pts for cases where pkt.pts
208                                 is not defined */
209     int64_t       pts;       /* current pts */
210     double ts_scale;
211     int is_start;            /* is 1 at the start and after a discontinuity */
212     int showed_multi_packet_warning;
213     AVDictionary *opts;
214
215     /* a pool of free buffers for decoded data */
216     FrameBuffer *buffer_pool;
217     int dr1;
218 } InputStream;
219
220 typedef struct InputFile {
221     AVFormatContext *ctx;
222     int eof_reached;      /* true if eof reached */
223     int ist_index;        /* index of first stream in input_streams */
224     int buffer_size;      /* current total buffer size */
225     int64_t ts_offset;
226     int nb_streams;       /* number of stream that ffmpeg is aware of; may be different
227                              from ctx.nb_streams if new streams appear during av_read_frame() */
228     int rate_emu;
229 } InputFile;
230
231 typedef struct OutputStream {
232     int file_index;          /* file index */
233     int index;               /* stream index in the output file */
234     int source_index;        /* InputStream index */
235     AVStream *st;            /* stream in the output file */
236     int encoding_needed;     /* true if encoding needed for this stream */
237     int frame_number;
238     /* input pts and corresponding output pts
239        for A/V sync */
240     struct InputStream *sync_ist; /* input stream to sync against */
241     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ // FIXME look at frame_number
242     AVBitStreamFilterContext *bitstream_filters;
243     AVCodec *enc;
244     int64_t max_frames;
245     AVFrame *output_frame;
246
247     /* video only */
248     int video_resample;
249     AVFrame resample_frame;              /* temporary frame for image resampling */
250     struct SwsContext *img_resample_ctx; /* for image resampling */
251     int resample_height;
252     int resample_width;
253     int resample_pix_fmt;
254     AVRational frame_rate;
255     int force_fps;
256     int top_field_first;
257
258     float frame_aspect_ratio;
259
260     /* forced key frames */
261     int64_t *forced_kf_pts;
262     int forced_kf_count;
263     int forced_kf_index;
264
265     /* audio only */
266     int audio_resample;
267     int audio_channels_map[SWR_CH_MAX];  ///< list of the channels id to pick from the source stream
268     int audio_channels_mapped;           ///< number of channels in audio_channels_map
269     int resample_sample_fmt;
270     int resample_channels;
271     int resample_sample_rate;
272     float rematrix_volume;
273     AVFifoBuffer *fifo;     /* for compression: one audio fifo per codec */
274     FILE *logfile;
275
276     struct SwrContext *swr;
277
278 #if CONFIG_AVFILTER
279     AVFilterContext *output_video_filter;
280     AVFilterContext *input_video_filter;
281     AVFilterBufferRef *picref;
282     char *avfilter;
283     AVFilterGraph *graph;
284 #endif
285
286     int64_t sws_flags;
287     AVDictionary *opts;
288     int is_past_recording_time;
289     int stream_copy;
290     const char *attachment_filename;
291     int copy_initial_nonkeyframes;
292 } OutputStream;
293
294
295 #if HAVE_TERMIOS_H
296
297 /* init terminal so that we can grab keys */
298 static struct termios oldtty;
299 static int restore_tty;
300 #endif
301
302 typedef struct OutputFile {
303     AVFormatContext *ctx;
304     AVDictionary *opts;
305     int ost_index;       /* index of the first stream in output_streams */
306     int64_t recording_time; /* desired length of the resulting file in microseconds */
307     int64_t start_time;     /* start time in microseconds */
308     uint64_t limit_filesize; /* filesize limit expressed in bytes */
309 } OutputFile;
310
311 static InputStream *input_streams   = NULL;
312 static int         nb_input_streams = 0;
313 static InputFile   *input_files     = NULL;
314 static int         nb_input_files   = 0;
315
316 static OutputStream *output_streams = NULL;
317 static int        nb_output_streams = 0;
318 static OutputFile   *output_files   = NULL;
319 static int        nb_output_files   = 0;
320
321 typedef struct OptionsContext {
322     /* input/output options */
323     int64_t start_time;
324     const char *format;
325
326     SpecifierOpt *codec_names;
327     int        nb_codec_names;
328     SpecifierOpt *audio_channels;
329     int        nb_audio_channels;
330     SpecifierOpt *audio_sample_rate;
331     int        nb_audio_sample_rate;
332     SpecifierOpt *rematrix_volume;
333     int        nb_rematrix_volume;
334     SpecifierOpt *frame_rates;
335     int        nb_frame_rates;
336     SpecifierOpt *frame_sizes;
337     int        nb_frame_sizes;
338     SpecifierOpt *frame_pix_fmts;
339     int        nb_frame_pix_fmts;
340
341     /* input options */
342     int64_t input_ts_offset;
343     int rate_emu;
344
345     SpecifierOpt *ts_scale;
346     int        nb_ts_scale;
347     SpecifierOpt *dump_attachment;
348     int        nb_dump_attachment;
349
350     /* output options */
351     StreamMap *stream_maps;
352     int     nb_stream_maps;
353     AudioChannelMap *audio_channel_maps; ///< one info entry per -map_channel
354     int           nb_audio_channel_maps; ///< number of (valid) -map_channel settings
355     /* first item specifies output metadata, second is input */
356     MetadataMap (*meta_data_maps)[2];
357     int nb_meta_data_maps;
358     int metadata_global_manual;
359     int metadata_streams_manual;
360     int metadata_chapters_manual;
361     const char **attachments;
362     int       nb_attachments;
363
364     int chapters_input_file;
365
366     int64_t recording_time;
367     uint64_t limit_filesize;
368     float mux_preload;
369     float mux_max_delay;
370
371     int video_disable;
372     int audio_disable;
373     int subtitle_disable;
374     int data_disable;
375
376     /* indexed by output file stream index */
377     int   *streamid_map;
378     int nb_streamid_map;
379
380     SpecifierOpt *metadata;
381     int        nb_metadata;
382     SpecifierOpt *max_frames;
383     int        nb_max_frames;
384     SpecifierOpt *bitstream_filters;
385     int        nb_bitstream_filters;
386     SpecifierOpt *codec_tags;
387     int        nb_codec_tags;
388     SpecifierOpt *sample_fmts;
389     int        nb_sample_fmts;
390     SpecifierOpt *qscale;
391     int        nb_qscale;
392     SpecifierOpt *forced_key_frames;
393     int        nb_forced_key_frames;
394     SpecifierOpt *force_fps;
395     int        nb_force_fps;
396     SpecifierOpt *frame_aspect_ratios;
397     int        nb_frame_aspect_ratios;
398     SpecifierOpt *rc_overrides;
399     int        nb_rc_overrides;
400     SpecifierOpt *intra_matrices;
401     int        nb_intra_matrices;
402     SpecifierOpt *inter_matrices;
403     int        nb_inter_matrices;
404     SpecifierOpt *top_field_first;
405     int        nb_top_field_first;
406     SpecifierOpt *metadata_map;
407     int        nb_metadata_map;
408     SpecifierOpt *presets;
409     int        nb_presets;
410     SpecifierOpt *copy_initial_nonkeyframes;
411     int        nb_copy_initial_nonkeyframes;
412 #if CONFIG_AVFILTER
413     SpecifierOpt *filters;
414     int        nb_filters;
415 #endif
416 } OptionsContext;
417
418 #define MATCH_PER_STREAM_OPT(name, type, outvar, fmtctx, st)\
419 {\
420     int i, ret;\
421     for (i = 0; i < o->nb_ ## name; i++) {\
422         char *spec = o->name[i].specifier;\
423         if ((ret = check_stream_specifier(fmtctx, st, spec)) > 0)\
424             outvar = o->name[i].u.type;\
425         else if (ret < 0)\
426             exit_program(1);\
427     }\
428 }
429
430 static void reset_options(OptionsContext *o, int is_input)
431 {
432     const OptionDef *po = options;
433     OptionsContext bak= *o;
434
435     /* all OPT_SPEC and OPT_STRING can be freed in generic way */
436     while (po->name) {
437         void *dst = (uint8_t*)o + po->u.off;
438
439         if (po->flags & OPT_SPEC) {
440             SpecifierOpt **so = dst;
441             int i, *count = (int*)(so + 1);
442             for (i = 0; i < *count; i++) {
443                 av_freep(&(*so)[i].specifier);
444                 if (po->flags & OPT_STRING)
445                     av_freep(&(*so)[i].u.str);
446             }
447             av_freep(so);
448             *count = 0;
449         } else if (po->flags & OPT_OFFSET && po->flags & OPT_STRING)
450             av_freep(dst);
451         po++;
452     }
453
454     av_freep(&o->stream_maps);
455     av_freep(&o->audio_channel_maps);
456     av_freep(&o->meta_data_maps);
457     av_freep(&o->streamid_map);
458
459     memset(o, 0, sizeof(*o));
460
461     if(is_input) o->recording_time = bak.recording_time;
462     else         o->recording_time = INT64_MAX;
463     o->mux_max_delay  = 0.7;
464     o->limit_filesize = UINT64_MAX;
465     o->chapters_input_file = INT_MAX;
466
467     uninit_opts();
468     init_opts();
469 }
470
471 static int alloc_buffer(AVCodecContext *s, InputStream *ist, FrameBuffer **pbuf)
472 {
473     FrameBuffer  *buf = av_mallocz(sizeof(*buf));
474     int i, ret;
475     const int pixel_size = av_pix_fmt_descriptors[s->pix_fmt].comp[0].step_minus1+1;
476     int h_chroma_shift, v_chroma_shift;
477     int edge = 32; // XXX should be avcodec_get_edge_width(), but that fails on svq1
478     int w = s->width, h = s->height;
479
480     if (!buf)
481         return AVERROR(ENOMEM);
482
483     if (!(s->flags & CODEC_FLAG_EMU_EDGE)) {
484         w += 2*edge;
485         h += 2*edge;
486     }
487
488     avcodec_align_dimensions(s, &w, &h);
489     if ((ret = av_image_alloc(buf->base, buf->linesize, w, h,
490                               s->pix_fmt, 32)) < 0) {
491         av_freep(&buf);
492         return ret;
493     }
494     /* XXX this shouldn't be needed, but some tests break without this line
495      * those decoders are buggy and need to be fixed.
496      * the following tests fail:
497      * bethsoft-vid, cdgraphics, ansi, aasc, fraps-v1, qtrle-1bit
498      */
499     memset(buf->base[0], 128, ret);
500
501     avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
502     for (i = 0; i < FF_ARRAY_ELEMS(buf->data); i++) {
503         const int h_shift = i==0 ? 0 : h_chroma_shift;
504         const int v_shift = i==0 ? 0 : v_chroma_shift;
505         if (s->flags & CODEC_FLAG_EMU_EDGE)
506             buf->data[i] = buf->base[i];
507         else
508             buf->data[i] = buf->base[i] +
509                            FFALIGN((buf->linesize[i]*edge >> v_shift) +
510                                    (pixel_size*edge >> h_shift), 32);
511     }
512     buf->w       = s->width;
513     buf->h       = s->height;
514     buf->pix_fmt = s->pix_fmt;
515     buf->ist     = ist;
516
517     *pbuf = buf;
518     return 0;
519 }
520
521 static void free_buffer_pool(InputStream *ist)
522 {
523     FrameBuffer *buf = ist->buffer_pool;
524     while (buf) {
525         ist->buffer_pool = buf->next;
526         av_freep(&buf->base[0]);
527         av_free(buf);
528         buf = ist->buffer_pool;
529     }
530 }
531
532 static void unref_buffer(InputStream *ist, FrameBuffer *buf)
533 {
534     av_assert0(buf->refcount);
535     buf->refcount--;
536     if (!buf->refcount) {
537         buf->next = ist->buffer_pool;
538         ist->buffer_pool = buf;
539     }
540 }
541
542 static int codec_get_buffer(AVCodecContext *s, AVFrame *frame)
543 {
544     InputStream *ist = s->opaque;
545     FrameBuffer *buf;
546     int ret, i;
547
548     if(av_image_check_size(s->width, s->height, 0, s))
549         return -1;
550
551     if (!ist->buffer_pool && (ret = alloc_buffer(s, ist, &ist->buffer_pool)) < 0)
552         return ret;
553
554     buf              = ist->buffer_pool;
555     ist->buffer_pool = buf->next;
556     buf->next        = NULL;
557     if (buf->w != s->width || buf->h != s->height || buf->pix_fmt != s->pix_fmt) {
558         av_freep(&buf->base[0]);
559         av_free(buf);
560         ist->dr1 = 0;
561         if ((ret = alloc_buffer(s, ist, &buf)) < 0)
562             return ret;
563     }
564     buf->refcount++;
565
566     frame->opaque        = buf;
567     frame->type          = FF_BUFFER_TYPE_USER;
568     frame->extended_data = frame->data;
569     frame->pkt_pts       = s->pkt ? s->pkt->pts : AV_NOPTS_VALUE;
570
571     for (i = 0; i < FF_ARRAY_ELEMS(buf->data); i++) {
572         frame->base[i]     = buf->base[i];  // XXX h264.c uses base though it shouldn't
573         frame->data[i]     = buf->data[i];
574         frame->linesize[i] = buf->linesize[i];
575     }
576
577     return 0;
578 }
579
580 static void codec_release_buffer(AVCodecContext *s, AVFrame *frame)
581 {
582     InputStream *ist = s->opaque;
583     FrameBuffer *buf = frame->opaque;
584     int i;
585
586     if(frame->type!=FF_BUFFER_TYPE_USER)
587         return avcodec_default_release_buffer(s, frame);
588
589     for (i = 0; i < FF_ARRAY_ELEMS(frame->data); i++)
590         frame->data[i] = NULL;
591
592     unref_buffer(ist, buf);
593 }
594
595 static void filter_release_buffer(AVFilterBuffer *fb)
596 {
597     FrameBuffer *buf = fb->priv;
598     av_free(fb);
599     unref_buffer(buf->ist, buf);
600 }
601
602 #if CONFIG_AVFILTER
603
604 static int configure_video_filters(InputStream *ist, OutputStream *ost)
605 {
606     AVFilterContext *last_filter, *filter;
607     /** filter graph containing all filters including input & output */
608     AVCodecContext *codec = ost->st->codec;
609     AVCodecContext *icodec = ist->st->codec;
610     enum PixelFormat pix_fmts[] = { codec->pix_fmt, PIX_FMT_NONE };
611     AVBufferSinkParams *buffersink_params = av_buffersink_params_alloc();
612     AVRational sample_aspect_ratio;
613     char args[255];
614     int ret;
615
616     ost->graph = avfilter_graph_alloc();
617
618     if (ist->st->sample_aspect_ratio.num) {
619         sample_aspect_ratio = ist->st->sample_aspect_ratio;
620     } else
621         sample_aspect_ratio = ist->st->codec->sample_aspect_ratio;
622
623     snprintf(args, 255, "%d:%d:%d:%d:%d:%d:%d", ist->st->codec->width,
624              ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE,
625              sample_aspect_ratio.num, sample_aspect_ratio.den);
626
627     ret = avfilter_graph_create_filter(&ost->input_video_filter, avfilter_get_by_name("buffer"),
628                                        "src", args, NULL, ost->graph);
629     if (ret < 0)
630         return ret;
631
632 #if FF_API_OLD_VSINK_API
633     ret = avfilter_graph_create_filter(&ost->output_video_filter, avfilter_get_by_name("buffersink"),
634                                        "out", NULL, pix_fmts, ost->graph);
635 #else
636     buffersink_params->pixel_fmts = pix_fmts;
637     ret = avfilter_graph_create_filter(&ost->output_video_filter, avfilter_get_by_name("buffersink"),
638                                        "out", NULL, buffersink_params, ost->graph);
639 #endif
640     av_freep(&buffersink_params);
641
642     if (ret < 0)
643         return ret;
644     last_filter = ost->input_video_filter;
645
646     if (codec->width != icodec->width || codec->height != icodec->height) {
647         snprintf(args, 255, "%d:%d:flags=0x%X",
648                  codec->width,
649                  codec->height,
650                  (unsigned)ost->sws_flags);
651         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
652                                                 NULL, args, NULL, ost->graph)) < 0)
653             return ret;
654         if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
655             return ret;
656         last_filter = filter;
657     }
658
659     snprintf(args, sizeof(args), "flags=0x%X", (unsigned)ost->sws_flags);
660     ost->graph->scale_sws_opts = av_strdup(args);
661
662     if (ost->avfilter) {
663         AVFilterInOut *outputs = avfilter_inout_alloc();
664         AVFilterInOut *inputs  = avfilter_inout_alloc();
665
666         outputs->name    = av_strdup("in");
667         outputs->filter_ctx = last_filter;
668         outputs->pad_idx = 0;
669         outputs->next    = NULL;
670
671         inputs->name    = av_strdup("out");
672         inputs->filter_ctx = ost->output_video_filter;
673         inputs->pad_idx = 0;
674         inputs->next    = NULL;
675
676         if ((ret = avfilter_graph_parse(ost->graph, ost->avfilter, &inputs, &outputs, NULL)) < 0)
677             return ret;
678         av_freep(&ost->avfilter);
679     } else {
680         if ((ret = avfilter_link(last_filter, 0, ost->output_video_filter, 0)) < 0)
681             return ret;
682     }
683
684     if ((ret = avfilter_graph_config(ost->graph, NULL)) < 0)
685         return ret;
686
687     codec->width  = ost->output_video_filter->inputs[0]->w;
688     codec->height = ost->output_video_filter->inputs[0]->h;
689     codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
690         ost->frame_aspect_ratio ? // overridden by the -aspect cli option
691         av_d2q(ost->frame_aspect_ratio * codec->height/codec->width, 255) :
692         ost->output_video_filter->inputs[0]->sample_aspect_ratio;
693
694     return 0;
695 }
696 #endif /* CONFIG_AVFILTER */
697
698 static void term_exit(void)
699 {
700     av_log(NULL, AV_LOG_QUIET, "%s", "");
701 #if HAVE_TERMIOS_H
702     if(restore_tty)
703         tcsetattr (0, TCSANOW, &oldtty);
704 #endif
705 }
706
707 static volatile int received_sigterm = 0;
708
709 static void sigterm_handler(int sig)
710 {
711     received_sigterm = sig;
712     received_nb_signals++;
713     term_exit();
714     if(received_nb_signals > 3)
715         exit(123);
716 }
717
718 static void term_init(void)
719 {
720 #if HAVE_TERMIOS_H
721     if(!run_as_daemon){
722     struct termios tty;
723
724     if (tcgetattr (0, &tty) == 0) {
725     oldtty = tty;
726     restore_tty = 1;
727     atexit(term_exit);
728
729     tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
730                           |INLCR|IGNCR|ICRNL|IXON);
731     tty.c_oflag |= OPOST;
732     tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
733     tty.c_cflag &= ~(CSIZE|PARENB);
734     tty.c_cflag |= CS8;
735     tty.c_cc[VMIN] = 1;
736     tty.c_cc[VTIME] = 0;
737
738     tcsetattr (0, TCSANOW, &tty);
739     }
740     signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
741     }
742 #endif
743     avformat_network_deinit();
744
745     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
746     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
747 #ifdef SIGXCPU
748     signal(SIGXCPU, sigterm_handler);
749 #endif
750 }
751
752 /* read a key without blocking */
753 static int read_key(void)
754 {
755     unsigned char ch;
756 #if HAVE_TERMIOS_H
757     int n = 1;
758     struct timeval tv;
759     fd_set rfds;
760
761     FD_ZERO(&rfds);
762     FD_SET(0, &rfds);
763     tv.tv_sec = 0;
764     tv.tv_usec = 0;
765     n = select(1, &rfds, NULL, NULL, &tv);
766     if (n > 0) {
767         n = read(0, &ch, 1);
768         if (n == 1)
769             return ch;
770
771         return n;
772     }
773 #elif HAVE_KBHIT
774 #    if HAVE_PEEKNAMEDPIPE
775     static int is_pipe;
776     static HANDLE input_handle;
777     DWORD dw, nchars;
778     if(!input_handle){
779         input_handle = GetStdHandle(STD_INPUT_HANDLE);
780         is_pipe = !GetConsoleMode(input_handle, &dw);
781     }
782
783     if (stdin->_cnt > 0) {
784         read(0, &ch, 1);
785         return ch;
786     }
787     if (is_pipe) {
788         /* When running under a GUI, you will end here. */
789         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL))
790             return -1;
791         //Read it
792         if(nchars != 0) {
793             read(0, &ch, 1);
794             return ch;
795         }else{
796             return -1;
797         }
798     }
799 #    endif
800     if(kbhit())
801         return(getch());
802 #endif
803     return -1;
804 }
805
806 static int decode_interrupt_cb(void *ctx)
807 {
808     return received_nb_signals > 1;
809 }
810
811 static const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
812
813 void av_noreturn exit_program(int ret)
814 {
815     int i;
816
817     /* close files */
818     for (i = 0; i < nb_output_files; i++) {
819         AVFormatContext *s = output_files[i].ctx;
820         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
821             avio_close(s->pb);
822         avformat_free_context(s);
823         av_dict_free(&output_files[i].opts);
824     }
825     for (i = 0; i < nb_output_streams; i++) {
826         AVBitStreamFilterContext *bsfc = output_streams[i].bitstream_filters;
827         while (bsfc) {
828             AVBitStreamFilterContext *next = bsfc->next;
829             av_bitstream_filter_close(bsfc);
830             bsfc = next;
831         }
832         output_streams[i].bitstream_filters = NULL;
833
834         if (output_streams[i].output_frame) {
835             AVFrame *frame = output_streams[i].output_frame;
836             if (frame->extended_data != frame->data)
837                 av_freep(&frame->extended_data);
838             av_freep(&frame);
839         }
840     }
841     for (i = 0; i < nb_input_files; i++) {
842         avformat_close_input(&input_files[i].ctx);
843     }
844     for (i = 0; i < nb_input_streams; i++) {
845         av_freep(&input_streams[i].decoded_frame);
846         av_freep(&input_streams[i].filtered_frame);
847         av_dict_free(&input_streams[i].opts);
848         free_buffer_pool(&input_streams[i]);
849     }
850
851     if (vstats_file)
852         fclose(vstats_file);
853     av_free(vstats_filename);
854
855     av_freep(&input_streams);
856     av_freep(&input_files);
857     av_freep(&output_streams);
858     av_freep(&output_files);
859
860     uninit_opts();
861     av_free(audio_buf);
862     allocated_audio_buf_size = 0;
863
864 #if CONFIG_AVFILTER
865     avfilter_uninit();
866 #endif
867     avformat_network_deinit();
868
869     av_freep(&input_tmp);
870
871     if (received_sigterm) {
872         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
873                (int) received_sigterm);
874         exit (255);
875     }
876
877     exit(ret); /* not all OS-es handle main() return value */
878 }
879
880 static void assert_avoptions(AVDictionary *m)
881 {
882     AVDictionaryEntry *t;
883     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
884         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
885         exit_program(1);
886     }
887 }
888
889 static void assert_codec_experimental(AVCodecContext *c, int encoder)
890 {
891     const char *codec_string = encoder ? "encoder" : "decoder";
892     AVCodec *codec;
893     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
894         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
895         av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
896                 "results.\nAdd '-strict experimental' if you want to use it.\n",
897                 codec_string, c->codec->name);
898         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
899         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
900             av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
901                    codec_string, codec->name);
902         exit_program(1);
903     }
904 }
905
906 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
907 {
908     if (codec && codec->sample_fmts) {
909         const enum AVSampleFormat *p = codec->sample_fmts;
910         for (; *p != -1; p++) {
911             if (*p == st->codec->sample_fmt)
912                 break;
913         }
914         if (*p == -1) {
915             if((codec->capabilities & CODEC_CAP_LOSSLESS) && av_get_sample_fmt_name(st->codec->sample_fmt) > av_get_sample_fmt_name(codec->sample_fmts[0]))
916                 av_log(NULL, AV_LOG_ERROR, "Conversion will not be lossless.\n");
917             if(av_get_sample_fmt_name(st->codec->sample_fmt))
918             av_log(NULL, AV_LOG_WARNING,
919                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
920                    av_get_sample_fmt_name(st->codec->sample_fmt),
921                    codec->name,
922                    av_get_sample_fmt_name(codec->sample_fmts[0]));
923             st->codec->sample_fmt = codec->sample_fmts[0];
924         }
925     }
926 }
927
928 static void choose_sample_rate(AVStream *st, AVCodec *codec)
929 {
930     if (codec && codec->supported_samplerates) {
931         const int *p  = codec->supported_samplerates;
932         int best      = 0;
933         int best_dist = INT_MAX;
934         for (; *p; p++) {
935             int dist = abs(st->codec->sample_rate - *p);
936             if (dist < best_dist) {
937                 best_dist = dist;
938                 best      = *p;
939             }
940         }
941         if (best_dist) {
942             av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
943         }
944         st->codec->sample_rate = best;
945     }
946 }
947
948 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
949 {
950     if (codec && codec->pix_fmts) {
951         const enum PixelFormat *p = codec->pix_fmts;
952         int has_alpha= av_pix_fmt_descriptors[st->codec->pix_fmt].nb_components % 2 == 0;
953         enum PixelFormat best= PIX_FMT_NONE;
954         if (st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
955             if (st->codec->codec_id == CODEC_ID_MJPEG) {
956                 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE };
957             } else if (st->codec->codec_id == CODEC_ID_LJPEG) {
958                 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUVJ444P, PIX_FMT_YUV420P,
959                                                  PIX_FMT_YUV422P, PIX_FMT_YUV444P, PIX_FMT_BGRA, PIX_FMT_NONE };
960             }
961         }
962         for (; *p != PIX_FMT_NONE; p++) {
963             best= avcodec_find_best_pix_fmt2(best, *p, st->codec->pix_fmt, has_alpha, NULL);
964             if (*p == st->codec->pix_fmt)
965                 break;
966         }
967         if (*p == PIX_FMT_NONE) {
968             if (st->codec->pix_fmt != PIX_FMT_NONE)
969                 av_log(NULL, AV_LOG_WARNING,
970                        "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
971                        av_pix_fmt_descriptors[st->codec->pix_fmt].name,
972                        codec->name,
973                        av_pix_fmt_descriptors[best].name);
974             st->codec->pix_fmt = best;
975         }
976     }
977 }
978
979 static double get_sync_ipts(const OutputStream *ost)
980 {
981     const InputStream *ist = ost->sync_ist;
982     OutputFile *of = &output_files[ost->file_index];
983     return (double)(ist->pts - of->start_time) / AV_TIME_BASE;
984 }
985
986 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
987 {
988     AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
989     AVCodecContext          *avctx = ost->st->codec;
990     int ret;
991
992     /*
993      * Audio encoders may split the packets --  #frames in != #packets out.
994      * But there is no reordering, so we can limit the number of output packets
995      * by simply dropping them here.
996      * Counting encoded video frames needs to be done separately because of
997      * reordering, see do_video_out()
998      */
999     if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
1000         if (ost->frame_number >= ost->max_frames)
1001             return;
1002         ost->frame_number++;
1003     }
1004
1005     while (bsfc) {
1006         AVPacket new_pkt = *pkt;
1007         int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
1008                                            &new_pkt.data, &new_pkt.size,
1009                                            pkt->data, pkt->size,
1010                                            pkt->flags & AV_PKT_FLAG_KEY);
1011         if (a > 0) {
1012             av_free_packet(pkt);
1013             new_pkt.destruct = av_destruct_packet;
1014         } else if (a < 0) {
1015             av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
1016                    bsfc->filter->name, pkt->stream_index,
1017                    avctx->codec ? avctx->codec->name : "copy");
1018             print_error("", a);
1019             if (exit_on_error)
1020                 exit_program(1);
1021         }
1022         *pkt = new_pkt;
1023
1024         bsfc = bsfc->next;
1025     }
1026
1027     pkt->stream_index = ost->index;
1028     ret = av_interleaved_write_frame(s, pkt);
1029     if (ret < 0) {
1030         print_error("av_interleaved_write_frame()", ret);
1031         exit_program(1);
1032     }
1033 }
1034
1035 static void generate_silence(uint8_t* buf, enum AVSampleFormat sample_fmt, size_t size)
1036 {
1037     int fill_char = 0x00;
1038     if (sample_fmt == AV_SAMPLE_FMT_U8)
1039         fill_char = 0x80;
1040     memset(buf, fill_char, size);
1041 }
1042
1043 static int encode_audio_frame(AVFormatContext *s, OutputStream *ost,
1044                               const uint8_t *buf, int buf_size)
1045 {
1046     AVCodecContext *enc = ost->st->codec;
1047     AVFrame *frame = NULL;
1048     AVPacket pkt;
1049     int ret, got_packet;
1050
1051     av_init_packet(&pkt);
1052     pkt.data = NULL;
1053     pkt.size = 0;
1054
1055     if (buf) {
1056         if (!ost->output_frame) {
1057             ost->output_frame = avcodec_alloc_frame();
1058             if (!ost->output_frame) {
1059                 av_log(NULL, AV_LOG_FATAL, "out-of-memory in encode_audio_frame()\n");
1060                 exit_program(1);
1061             }
1062         }
1063         frame = ost->output_frame;
1064         if (frame->extended_data != frame->data)
1065             av_freep(&frame->extended_data);
1066         avcodec_get_frame_defaults(frame);
1067
1068         frame->nb_samples  = buf_size /
1069                              (enc->channels * av_get_bytes_per_sample(enc->sample_fmt));
1070         if ((ret = avcodec_fill_audio_frame(frame, enc->channels, enc->sample_fmt,
1071                                             buf, buf_size, 1)) < 0) {
1072             av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1073             exit_program(1);
1074         }
1075     }
1076
1077     got_packet = 0;
1078     if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
1079         av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1080         exit_program(1);
1081     }
1082
1083     ret = pkt.size;
1084
1085     if (got_packet) {
1086         if (pkt.pts != AV_NOPTS_VALUE)
1087             pkt.pts      = av_rescale_q(pkt.pts,      enc->time_base, ost->st->time_base);
1088         if (pkt.duration > 0)
1089             pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
1090
1091         write_frame(s, &pkt, ost);
1092
1093         audio_size += pkt.size;
1094
1095         av_free_packet(&pkt);
1096     }
1097
1098     if (frame)
1099         ost->sync_opts += frame->nb_samples;
1100
1101     return ret;
1102 }
1103
1104 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
1105                          InputStream *ist, AVFrame *decoded_frame)
1106 {
1107     uint8_t *buftmp;
1108     int64_t audio_buf_size, size_out;
1109
1110     int frame_bytes, resample_changed;
1111     AVCodecContext *enc = ost->st->codec;
1112     AVCodecContext *dec = ist->st->codec;
1113     int osize = av_get_bytes_per_sample(enc->sample_fmt);
1114     int isize = av_get_bytes_per_sample(dec->sample_fmt);
1115     uint8_t *buf = decoded_frame->data[0];
1116     int size     = decoded_frame->nb_samples * dec->channels * isize;
1117     int64_t allocated_for_size = size;
1118
1119 need_realloc:
1120     audio_buf_size  = (allocated_for_size + isize * dec->channels - 1) / (isize * dec->channels);
1121     audio_buf_size  = (audio_buf_size * enc->sample_rate + dec->sample_rate) / dec->sample_rate;
1122     audio_buf_size  = audio_buf_size * 2 + 10000; // safety factors for the deprecated resampling API
1123     audio_buf_size  = FFMAX(audio_buf_size, enc->frame_size);
1124     audio_buf_size *= osize * enc->channels;
1125
1126     if (audio_buf_size > INT_MAX) {
1127         av_log(NULL, AV_LOG_FATAL, "Buffer sizes too large\n");
1128         exit_program(1);
1129     }
1130
1131     av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
1132     if (!audio_buf) {
1133         av_log(NULL, AV_LOG_FATAL, "Out of memory in do_audio_out\n");
1134         exit_program(1);
1135     }
1136
1137     if (enc->channels != dec->channels
1138      || enc->sample_fmt != dec->sample_fmt
1139      || enc->sample_rate!= dec->sample_rate
1140     )
1141         ost->audio_resample = 1;
1142
1143     resample_changed = ost->resample_sample_fmt  != dec->sample_fmt ||
1144                        ost->resample_channels    != dec->channels   ||
1145                        ost->resample_sample_rate != dec->sample_rate;
1146
1147     if ((ost->audio_resample && !ost->swr) || resample_changed || ost->audio_channels_mapped) {
1148         if (resample_changed) {
1149             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",
1150                    ist->file_index, ist->st->index,
1151                    ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
1152                    dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
1153             ost->resample_sample_fmt  = dec->sample_fmt;
1154             ost->resample_channels    = dec->channels;
1155             ost->resample_sample_rate = dec->sample_rate;
1156             swr_free(&ost->swr);
1157         }
1158         /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
1159         if (audio_sync_method <= 1 && !ost->audio_channels_mapped &&
1160             ost->resample_sample_fmt  == enc->sample_fmt &&
1161             ost->resample_channels    == enc->channels   &&
1162             ost->resample_sample_rate == enc->sample_rate) {
1163             //ost->swr = NULL;
1164             ost->audio_resample = 0;
1165         } else {
1166             ost->swr = swr_alloc_set_opts(ost->swr,
1167                                           enc->channel_layout, enc->sample_fmt, enc->sample_rate,
1168                                           dec->channel_layout, dec->sample_fmt, dec->sample_rate,
1169                                           0, NULL);
1170             if (ost->audio_channels_mapped)
1171                 swr_set_channel_mapping(ost->swr, ost->audio_channels_map);
1172             av_opt_set_double(ost->swr, "rmvol", ost->rematrix_volume, 0);
1173             if (ost->audio_channels_mapped) {
1174                 av_opt_set_int(ost->swr, "icl", av_get_default_channel_layout(ost->audio_channels_mapped), 0);
1175                 av_opt_set_int(ost->swr, "uch", ost->audio_channels_mapped, 0);
1176             }
1177             if (av_opt_set_int(ost->swr, "ich", dec->channels, 0) < 0) {
1178                 av_log(NULL, AV_LOG_FATAL, "Unsupported number of input channels\n");
1179                 exit_program(1);
1180             }
1181             if (av_opt_set_int(ost->swr, "och", enc->channels, 0) < 0) {
1182                 av_log(NULL, AV_LOG_FATAL, "Unsupported number of output channels\n");
1183                 exit_program(1);
1184             }
1185             if(audio_sync_method>1) av_opt_set_int(ost->swr, "flags", SWR_FLAG_RESAMPLE, 0);
1186             if(ost->swr && swr_init(ost->swr) < 0){
1187                 av_log(NULL, AV_LOG_FATAL, "swr_init() failed\n");
1188                 swr_free(&ost->swr);
1189             }
1190
1191             if (!ost->swr) {
1192                 av_log(NULL, AV_LOG_FATAL, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
1193                         dec->channels, dec->sample_rate,
1194                         enc->channels, enc->sample_rate);
1195                 exit_program(1);
1196             }
1197         }
1198     }
1199
1200     av_assert0(ost->audio_resample || dec->sample_fmt==enc->sample_fmt);
1201
1202     if (audio_sync_method) {
1203         double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts -
1204                        av_fifo_size(ost->fifo) / (enc->channels * osize);
1205         int idelta = delta * dec->sample_rate / enc->sample_rate;
1206         int byte_delta = idelta * isize * dec->channels;
1207
1208         // FIXME resample delay
1209         if (fabs(delta) > 50) {
1210             if (ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate) {
1211                 if (byte_delta < 0) {
1212                     byte_delta = FFMAX(byte_delta, -size);
1213                     size += byte_delta;
1214                     buf  -= byte_delta;
1215                     av_log(NULL, AV_LOG_VERBOSE, "discarding %d audio samples\n",
1216                            -byte_delta / (isize * dec->channels));
1217                     if (!size)
1218                         return;
1219                     ist->is_start = 0;
1220                 } else {
1221                     input_tmp = av_realloc(input_tmp, byte_delta + size);
1222
1223                     if (byte_delta > allocated_for_size - size) {
1224                         allocated_for_size = byte_delta + (int64_t)size;
1225                         goto need_realloc;
1226                     }
1227                     ist->is_start = 0;
1228
1229                     generate_silence(input_tmp, dec->sample_fmt, byte_delta);
1230                     memcpy(input_tmp + byte_delta, buf, size);
1231                     buf = input_tmp;
1232                     size += byte_delta;
1233                     av_log(NULL, AV_LOG_VERBOSE, "adding %d audio samples of silence\n", idelta);
1234                 }
1235             } else if (audio_sync_method > 1) {
1236                 int comp = av_clip(delta, -audio_sync_method, audio_sync_method);
1237                 av_assert0(ost->audio_resample);
1238                 av_log(NULL, AV_LOG_VERBOSE, "compensating audio timestamp drift:%f compensation:%d in:%d\n",
1239                        delta, comp, enc->sample_rate);
1240 //                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));
1241                 swr_set_compensation(ost->swr, comp, enc->sample_rate);
1242             }
1243         }
1244     } else
1245         ost->sync_opts = lrintf(get_sync_ipts(ost) * enc->sample_rate) -
1246                                 av_fifo_size(ost->fifo) / (enc->channels * osize); // FIXME wrong
1247
1248     if (ost->audio_resample || ost->audio_channels_mapped) {
1249         buftmp = audio_buf;
1250         size_out = swr_convert(ost->swr, (      uint8_t*[]){buftmp}, audio_buf_size / (enc->channels * osize),
1251                                          (const uint8_t*[]){buf   }, size / (dec->channels * isize));
1252         size_out = size_out * enc->channels * osize;
1253     } else {
1254         buftmp = buf;
1255         size_out = size;
1256     }
1257
1258     av_assert0(ost->audio_resample || dec->sample_fmt==enc->sample_fmt);
1259
1260     /* now encode as many frames as possible */
1261     if (!(enc->codec->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE)) {
1262         /* output resampled raw samples */
1263         if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
1264             av_log(NULL, AV_LOG_FATAL, "av_fifo_realloc2() failed\n");
1265             exit_program(1);
1266         }
1267         av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
1268
1269         frame_bytes = enc->frame_size * osize * enc->channels;
1270
1271         while (av_fifo_size(ost->fifo) >= frame_bytes) {
1272             av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
1273             encode_audio_frame(s, ost, audio_buf, frame_bytes);
1274         }
1275     } else {
1276         encode_audio_frame(s, ost, buftmp, size_out);
1277     }
1278 }
1279
1280 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
1281 {
1282     AVCodecContext *dec;
1283     AVPicture *picture2;
1284     AVPicture picture_tmp;
1285     uint8_t *buf = 0;
1286
1287     dec = ist->st->codec;
1288
1289     /* deinterlace : must be done before any resize */
1290     if (do_deinterlace) {
1291         int size;
1292
1293         /* create temporary picture */
1294         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1295         buf  = av_malloc(size);
1296         if (!buf)
1297             return;
1298
1299         picture2 = &picture_tmp;
1300         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1301
1302         if (avpicture_deinterlace(picture2, picture,
1303                                  dec->pix_fmt, dec->width, dec->height) < 0) {
1304             /* if error, do not deinterlace */
1305             av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
1306             av_free(buf);
1307             buf = NULL;
1308             picture2 = picture;
1309         }
1310     } else {
1311         picture2 = picture;
1312     }
1313
1314     if (picture != picture2)
1315         *picture = *picture2;
1316     *bufp = buf;
1317 }
1318
1319 static void do_subtitle_out(AVFormatContext *s,
1320                             OutputStream *ost,
1321                             InputStream *ist,
1322                             AVSubtitle *sub,
1323                             int64_t pts)
1324 {
1325     static uint8_t *subtitle_out = NULL;
1326     int subtitle_out_max_size = 1024 * 1024;
1327     int subtitle_out_size, nb, i;
1328     AVCodecContext *enc;
1329     AVPacket pkt;
1330
1331     if (pts == AV_NOPTS_VALUE) {
1332         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
1333         if (exit_on_error)
1334             exit_program(1);
1335         return;
1336     }
1337
1338     enc = ost->st->codec;
1339
1340     if (!subtitle_out) {
1341         subtitle_out = av_malloc(subtitle_out_max_size);
1342     }
1343
1344     /* Note: DVB subtitle need one packet to draw them and one other
1345        packet to clear them */
1346     /* XXX: signal it in the codec context ? */
1347     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1348         nb = 2;
1349     else
1350         nb = 1;
1351
1352     for (i = 0; i < nb; i++) {
1353         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1354         // start_display_time is required to be 0
1355         sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
1356         sub->end_display_time  -= sub->start_display_time;
1357         sub->start_display_time = 0;
1358         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1359                                                     subtitle_out_max_size, sub);
1360         if (subtitle_out_size < 0) {
1361             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
1362             exit_program(1);
1363         }
1364
1365         av_init_packet(&pkt);
1366         pkt.data = subtitle_out;
1367         pkt.size = subtitle_out_size;
1368         pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1369         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1370             /* XXX: the pts correction is handled here. Maybe handling
1371                it in the codec would be better */
1372             if (i == 0)
1373                 pkt.pts += 90 * sub->start_display_time;
1374             else
1375                 pkt.pts += 90 * sub->end_display_time;
1376         }
1377         write_frame(s, &pkt, ost);
1378     }
1379 }
1380
1381 static int bit_buffer_size = 1024 * 256;
1382 static uint8_t *bit_buffer = NULL;
1383
1384 static void do_video_resample(OutputStream *ost,
1385                               InputStream *ist,
1386                               AVFrame *in_picture,
1387                               AVFrame **out_picture)
1388 {
1389 #if CONFIG_AVFILTER
1390     *out_picture = in_picture;
1391 #else
1392     AVCodecContext *dec = ist->st->codec;
1393     AVCodecContext *enc = ost->st->codec;
1394     int resample_changed = ost->resample_width   != in_picture->width  ||
1395                            ost->resample_height  != in_picture->height ||
1396                            ost->resample_pix_fmt != in_picture->format;
1397
1398     *out_picture = in_picture;
1399     if (resample_changed) {
1400         av_log(NULL, AV_LOG_INFO,
1401                "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",
1402                ist->file_index, ist->st->index,
1403                ost->resample_width, ost->resample_height, av_get_pix_fmt_name(ost->resample_pix_fmt),
1404                dec->width         , dec->height         , av_get_pix_fmt_name(dec->pix_fmt),
1405                in_picture->width, in_picture->height, av_get_pix_fmt_name(in_picture->format));
1406         ost->resample_width   = in_picture->width;
1407         ost->resample_height  = in_picture->height;
1408         ost->resample_pix_fmt = in_picture->format;
1409     }
1410
1411     ost->video_resample = in_picture->width   != enc->width  ||
1412                           in_picture->height  != enc->height ||
1413                           in_picture->format  != enc->pix_fmt;
1414
1415     if (ost->video_resample) {
1416         *out_picture = &ost->resample_frame;
1417         if (!ost->img_resample_ctx || resample_changed) {
1418             /* initialize the destination picture */
1419             if (!ost->resample_frame.data[0]) {
1420                 avcodec_get_frame_defaults(&ost->resample_frame);
1421                 if (avpicture_alloc((AVPicture *)&ost->resample_frame, enc->pix_fmt,
1422                                     enc->width, enc->height)) {
1423                     av_log(NULL, AV_LOG_FATAL, "Cannot allocate temp picture, check pix fmt\n");
1424                     exit_program(1);
1425                 }
1426             }
1427             /* initialize a new scaler context */
1428             sws_freeContext(ost->img_resample_ctx);
1429             ost->img_resample_ctx = sws_getContext(in_picture->width, in_picture->height, in_picture->format,
1430                                                    enc->width, enc->height, enc->pix_fmt,
1431                                                    ost->sws_flags, NULL, NULL, NULL);
1432             if (ost->img_resample_ctx == NULL) {
1433                 av_log(NULL, AV_LOG_FATAL, "Cannot get resampling context\n");
1434                 exit_program(1);
1435             }
1436         }
1437         sws_scale(ost->img_resample_ctx, in_picture->data, in_picture->linesize,
1438               0, ost->resample_height, (*out_picture)->data, (*out_picture)->linesize);
1439     }
1440 #endif
1441 }
1442
1443
1444 static void do_video_out(AVFormatContext *s,
1445                          OutputStream *ost,
1446                          InputStream *ist,
1447                          AVFrame *in_picture,
1448                          int *frame_size, float quality)
1449 {
1450     int nb_frames, i, ret, format_video_sync;
1451     AVFrame *final_picture;
1452     AVCodecContext *enc;
1453     double sync_ipts;
1454     double duration = 0;
1455
1456     enc = ost->st->codec;
1457
1458     if (ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE) {
1459         duration = FFMAX(av_q2d(ist->st->time_base), av_q2d(ist->st->codec->time_base));
1460         if(ist->st->avg_frame_rate.num)
1461             duration= FFMAX(duration, 1/av_q2d(ist->st->avg_frame_rate));
1462
1463         duration /= av_q2d(enc->time_base);
1464     }
1465
1466     sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1467
1468     /* by default, we output a single frame */
1469     nb_frames = 1;
1470
1471     *frame_size = 0;
1472
1473     format_video_sync = video_sync_method;
1474     if (format_video_sync == VSYNC_AUTO)
1475         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : 1;
1476
1477     if (format_video_sync != VSYNC_PASSTHROUGH && format_video_sync != VSYNC_DROP) {
1478         double vdelta = sync_ipts - ost->sync_opts + duration;
1479         // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1480         if (vdelta < -1.1)
1481             nb_frames = 0;
1482         else if (format_video_sync == VSYNC_VFR) {
1483             if (vdelta <= -0.6) {
1484                 nb_frames = 0;
1485             } else if (vdelta > 0.6)
1486                 ost->sync_opts = lrintf(sync_ipts);
1487         } else if (vdelta > 1.1)
1488             nb_frames = lrintf(vdelta);
1489         if (nb_frames == 0) {
1490             ++nb_frames_drop;
1491             av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
1492         } else if (nb_frames > 1) {
1493             nb_frames_dup += nb_frames - 1;
1494             av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
1495         }
1496     } else
1497         ost->sync_opts = lrintf(sync_ipts);
1498
1499     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
1500     if (nb_frames <= 0)
1501         return;
1502
1503     do_video_resample(ost, ist, in_picture, &final_picture);
1504
1505     /* duplicates frame if needed */
1506     for (i = 0; i < nb_frames; i++) {
1507         AVPacket pkt;
1508         av_init_packet(&pkt);
1509
1510         if (s->oformat->flags & AVFMT_RAWPICTURE &&
1511             enc->codec->id == CODEC_ID_RAWVIDEO) {
1512             /* raw pictures are written as AVPicture structure to
1513                avoid any copies. We support temporarily the older
1514                method. */
1515             enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
1516             enc->coded_frame->top_field_first  = in_picture->top_field_first;
1517             pkt.data   = (uint8_t *)final_picture;
1518             pkt.size   =  sizeof(AVPicture);
1519             pkt.pts    = av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1520             pkt.flags |= AV_PKT_FLAG_KEY;
1521
1522             write_frame(s, &pkt, ost);
1523         } else {
1524             AVFrame big_picture;
1525
1526             big_picture = *final_picture;
1527             /* better than nothing: use input picture interlaced
1528                settings */
1529             big_picture.interlaced_frame = in_picture->interlaced_frame;
1530             if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1531                 if (ost->top_field_first == -1)
1532                     big_picture.top_field_first = in_picture->top_field_first;
1533                 else
1534                     big_picture.top_field_first = !!ost->top_field_first;
1535             }
1536
1537             /* handles same_quant here. This is not correct because it may
1538                not be a global option */
1539             big_picture.quality = quality;
1540             if (!enc->me_threshold)
1541                 big_picture.pict_type = 0;
1542             big_picture.pts = ost->sync_opts;
1543             if (ost->forced_kf_index < ost->forced_kf_count &&
1544                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1545                 big_picture.pict_type = AV_PICTURE_TYPE_I;
1546                 ost->forced_kf_index++;
1547             }
1548             ret = avcodec_encode_video(enc,
1549                                        bit_buffer, bit_buffer_size,
1550                                        &big_picture);
1551             if (ret < 0) {
1552                 av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1553                 exit_program(1);
1554             }
1555
1556             if (ret > 0) {
1557                 pkt.data = bit_buffer;
1558                 pkt.size = ret;
1559                 if (!(enc->codec->capabilities & CODEC_CAP_DELAY))
1560                     pkt.pts = av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1561                 if (enc->coded_frame->pts != AV_NOPTS_VALUE)
1562                     pkt.pts = av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1563
1564                 if (enc->coded_frame->key_frame)
1565                     pkt.flags |= AV_PKT_FLAG_KEY;
1566                 if (format_video_sync == VSYNC_DROP)
1567                     pkt.pts = pkt.dts = AV_NOPTS_VALUE;
1568                 write_frame(s, &pkt, ost);
1569                 *frame_size = ret;
1570                 video_size += ret;
1571
1572                 /* if two pass, output log */
1573                 if (ost->logfile && enc->stats_out) {
1574                     fprintf(ost->logfile, "%s", enc->stats_out);
1575                 }
1576             }
1577         }
1578         ost->sync_opts++;
1579         /*
1580          * For video, number of frames in == number of packets out.
1581          * But there may be reordering, so we can't throw away frames on encoder
1582          * flush, we need to limit them here, before they go into encoder.
1583          */
1584         ost->frame_number++;
1585     }
1586 }
1587
1588 static double psnr(double d)
1589 {
1590     return -10.0 * log(d) / log(10.0);
1591 }
1592
1593 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1594                            int frame_size)
1595 {
1596     AVCodecContext *enc;
1597     int frame_number;
1598     double ti1, bitrate, avg_bitrate;
1599
1600     /* this is executed just the first time do_video_stats is called */
1601     if (!vstats_file) {
1602         vstats_file = fopen(vstats_filename, "w");
1603         if (!vstats_file) {
1604             perror("fopen");
1605             exit_program(1);
1606         }
1607     }
1608
1609     enc = ost->st->codec;
1610     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1611         frame_number = ost->frame_number;
1612         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
1613         if (enc->flags&CODEC_FLAG_PSNR)
1614             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
1615
1616         fprintf(vstats_file,"f_size= %6d ", frame_size);
1617         /* compute pts value */
1618         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1619         if (ti1 < 0.01)
1620             ti1 = 0.01;
1621
1622         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1623         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1624         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1625                (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1626         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1627     }
1628 }
1629
1630 static void print_report(OutputFile *output_files,
1631                          OutputStream *ost_table, int nb_ostreams,
1632                          int is_last_report, int64_t timer_start, int64_t cur_time)
1633 {
1634     char buf[1024];
1635     OutputStream *ost;
1636     AVFormatContext *oc;
1637     int64_t total_size;
1638     AVCodecContext *enc;
1639     int frame_number, vid, i;
1640     double bitrate;
1641     int64_t pts = INT64_MAX;
1642     static int64_t last_time = -1;
1643     static int qp_histogram[52];
1644     int hours, mins, secs, us;
1645
1646     if (!print_stats && !is_last_report)
1647         return;
1648
1649     if (!is_last_report) {
1650         if (last_time == -1) {
1651             last_time = cur_time;
1652             return;
1653         }
1654         if ((cur_time - last_time) < 500000)
1655             return;
1656         last_time = cur_time;
1657     }
1658
1659
1660     oc = output_files[0].ctx;
1661
1662     total_size = avio_size(oc->pb);
1663     if (total_size < 0) { // FIXME improve avio_size() so it works with non seekable output too
1664         total_size = avio_tell(oc->pb);
1665         if (total_size < 0)
1666             total_size = 0;
1667     }
1668
1669     buf[0] = '\0';
1670     vid = 0;
1671     for (i = 0; i < nb_ostreams; i++) {
1672         float q = -1;
1673         ost = &ost_table[i];
1674         enc = ost->st->codec;
1675         if (!ost->stream_copy && enc->coded_frame)
1676             q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
1677         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1678             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1679         }
1680         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1681             float t = (cur_time-timer_start) / 1000000.0;
1682
1683             frame_number = ost->frame_number;
1684             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1685                      frame_number, (t > 1) ? (int)(frame_number / t + 0.5) : 0, q);
1686             if (is_last_report)
1687                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1688             if (qp_hist) {
1689                 int j;
1690                 int qp = lrintf(q);
1691                 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
1692                     qp_histogram[qp]++;
1693                 for (j = 0; j < 32; j++)
1694                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j] + 1) / log(2)));
1695             }
1696             if (enc->flags&CODEC_FLAG_PSNR) {
1697                 int j;
1698                 double error, error_sum = 0;
1699                 double scale, scale_sum = 0;
1700                 char type[3] = { 'Y','U','V' };
1701                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1702                 for (j = 0; j < 3; j++) {
1703                     if (is_last_report) {
1704                         error = enc->error[j];
1705                         scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
1706                     } else {
1707                         error = enc->coded_frame->error[j];
1708                         scale = enc->width * enc->height * 255.0 * 255.0;
1709                     }
1710                     if (j)
1711                         scale /= 4;
1712                     error_sum += error;
1713                     scale_sum += scale;
1714                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error / scale));
1715                 }
1716                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
1717             }
1718             vid = 1;
1719         }
1720         /* compute min output value */
1721         pts = FFMIN(pts, av_rescale_q(ost->st->pts.val,
1722                                       ost->st->time_base, AV_TIME_BASE_Q));
1723     }
1724
1725     secs = pts / AV_TIME_BASE;
1726     us = pts % AV_TIME_BASE;
1727     mins = secs / 60;
1728     secs %= 60;
1729     hours = mins / 60;
1730     mins %= 60;
1731
1732     bitrate = pts ? total_size * 8 / (pts / 1000.0) : 0;
1733
1734     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1735              "size=%8.0fkB time=", total_size / 1024.0);
1736     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1737              "%02d:%02d:%02d.%02d ", hours, mins, secs,
1738              (100 * us) / AV_TIME_BASE);
1739     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1740              "bitrate=%6.1fkbits/s", bitrate);
1741
1742     if (nb_frames_dup || nb_frames_drop)
1743         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1744                 nb_frames_dup, nb_frames_drop);
1745
1746     av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
1747
1748     fflush(stderr);
1749
1750     if (is_last_report) {
1751         int64_t raw= audio_size + video_size + extra_size;
1752         av_log(NULL, AV_LOG_INFO, "\n");
1753         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1754                video_size / 1024.0,
1755                audio_size / 1024.0,
1756                extra_size / 1024.0,
1757                100.0 * (total_size - raw) / raw
1758         );
1759         if(video_size + audio_size + extra_size == 0){
1760             av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
1761         }
1762     }
1763 }
1764
1765 static void flush_encoders(OutputStream *ost_table, int nb_ostreams)
1766 {
1767     int i, ret;
1768
1769     for (i = 0; i < nb_ostreams; i++) {
1770         OutputStream   *ost = &ost_table[i];
1771         AVCodecContext *enc = ost->st->codec;
1772         AVFormatContext *os = output_files[ost->file_index].ctx;
1773         int stop_encoding = 0;
1774
1775         if (!ost->encoding_needed)
1776             continue;
1777
1778         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
1779             continue;
1780         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == CODEC_ID_RAWVIDEO)
1781             continue;
1782
1783         for (;;) {
1784             AVPacket pkt;
1785             int fifo_bytes;
1786             av_init_packet(&pkt);
1787             pkt.data = NULL;
1788             pkt.size = 0;
1789
1790             switch (ost->st->codec->codec_type) {
1791             case AVMEDIA_TYPE_AUDIO:
1792                 fifo_bytes = av_fifo_size(ost->fifo);
1793                 if (fifo_bytes > 0) {
1794                     /* encode any samples remaining in fifo */
1795                     int frame_bytes = fifo_bytes;
1796
1797                     av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1798
1799                     /* pad last frame with silence if needed */
1800                     if (!(enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME)) {
1801                         frame_bytes = enc->frame_size * enc->channels *
1802                                       av_get_bytes_per_sample(enc->sample_fmt);
1803                         if (allocated_audio_buf_size < frame_bytes)
1804                             exit_program(1);
1805                         generate_silence(audio_buf+fifo_bytes, enc->sample_fmt, frame_bytes - fifo_bytes);
1806                     }
1807                     encode_audio_frame(os, ost, audio_buf, frame_bytes);
1808                 } else {
1809                     /* flush encoder with NULL frames until it is done
1810                        returning packets */
1811                     if (encode_audio_frame(os, ost, NULL, 0) == 0) {
1812                         stop_encoding = 1;
1813                         break;
1814                     }
1815                 }
1816                 break;
1817             case AVMEDIA_TYPE_VIDEO:
1818                 ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1819                 if (ret < 0) {
1820                     av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1821                     exit_program(1);
1822                 }
1823                 video_size += ret;
1824                 if (enc->coded_frame && enc->coded_frame->key_frame)
1825                     pkt.flags |= AV_PKT_FLAG_KEY;
1826                 if (ost->logfile && enc->stats_out) {
1827                     fprintf(ost->logfile, "%s", enc->stats_out);
1828                 }
1829                 if (ret <= 0) {
1830                     stop_encoding = 1;
1831                     break;
1832                 }
1833                 pkt.data = bit_buffer;
1834                 pkt.size = ret;
1835                 if (enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1836                     pkt.pts = av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1837                 write_frame(os, &pkt, ost);
1838                 break;
1839             default:
1840                 stop_encoding = 1;
1841             }
1842             if (stop_encoding)
1843                 break;
1844         }
1845     }
1846 }
1847
1848 /*
1849  * Check whether a packet from ist should be written into ost at this time
1850  */
1851 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1852 {
1853     OutputFile *of = &output_files[ost->file_index];
1854     int ist_index  = ist - input_streams;
1855
1856     if (ost->source_index != ist_index)
1857         return 0;
1858
1859     if (of->start_time && ist->pts < of->start_time)
1860         return 0;
1861
1862     if (of->recording_time != INT64_MAX &&
1863         av_compare_ts(ist->pts, AV_TIME_BASE_Q, of->recording_time + of->start_time,
1864                       (AVRational){ 1, 1000000 }) >= 0) {
1865         ost->is_past_recording_time = 1;
1866         return 0;
1867     }
1868
1869     return 1;
1870 }
1871
1872 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1873 {
1874     OutputFile *of = &output_files[ost->file_index];
1875     int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1876     AVPicture pict;
1877     AVPacket opkt;
1878
1879     av_init_packet(&opkt);
1880
1881     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1882         !ost->copy_initial_nonkeyframes)
1883         return;
1884
1885     /* force the input stream PTS */
1886     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1887         audio_size += pkt->size;
1888     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1889         video_size += pkt->size;
1890         ost->sync_opts++;
1891     }
1892
1893     if (pkt->pts != AV_NOPTS_VALUE)
1894         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1895     else
1896         opkt.pts = AV_NOPTS_VALUE;
1897
1898     if (pkt->dts == AV_NOPTS_VALUE)
1899         opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1900     else
1901         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1902     opkt.dts -= ost_tb_start_time;
1903
1904     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1905     opkt.flags    = pkt->flags;
1906
1907     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1908     if (  ost->st->codec->codec_id != CODEC_ID_H264
1909        && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1910        && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1911        ) {
1912         if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY))
1913             opkt.destruct = av_destruct_packet;
1914     } else {
1915         opkt.data = pkt->data;
1916         opkt.size = pkt->size;
1917     }
1918     if (of->ctx->oformat->flags & AVFMT_RAWPICTURE) {
1919         /* store AVPicture in AVPacket, as expected by the output format */
1920         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1921         opkt.data = (uint8_t *)&pict;
1922         opkt.size = sizeof(AVPicture);
1923         opkt.flags |= AV_PKT_FLAG_KEY;
1924     }
1925
1926     write_frame(of->ctx, &opkt, ost);
1927     ost->st->codec->frame_number++;
1928     av_free_packet(&opkt);
1929 }
1930
1931 static void rate_emu_sleep(InputStream *ist)
1932 {
1933     if (input_files[ist->file_index].rate_emu) {
1934         int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1935         int64_t now = av_gettime() - ist->start;
1936         if (pts > now)
1937             usleep(pts - now);
1938     }
1939 }
1940
1941 static int transcode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1942 {
1943     AVFrame *decoded_frame;
1944     AVCodecContext *avctx = ist->st->codec;
1945     int bps = av_get_bytes_per_sample(ist->st->codec->sample_fmt);
1946     int i, ret;
1947
1948     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1949         return AVERROR(ENOMEM);
1950     else
1951         avcodec_get_frame_defaults(ist->decoded_frame);
1952     decoded_frame = ist->decoded_frame;
1953
1954     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1955     if (ret < 0) {
1956         return ret;
1957     }
1958
1959     if (!*got_output) {
1960         /* no audio frame */
1961         return ret;
1962     }
1963
1964     /* if the decoder provides a pts, use it instead of the last packet pts.
1965        the decoder could be delaying output by a packet or more. */
1966     if (decoded_frame->pts != AV_NOPTS_VALUE)
1967         ist->next_pts = decoded_frame->pts;
1968
1969     /* increment next_pts to use for the case where the input stream does not
1970        have timestamps or there are multiple frames in the packet */
1971     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1972                      avctx->sample_rate;
1973
1974     // preprocess audio (volume)
1975     if (audio_volume != 256) {
1976         int decoded_data_size = decoded_frame->nb_samples * avctx->channels * bps;
1977         void *samples = decoded_frame->data[0];
1978         switch (avctx->sample_fmt) {
1979         case AV_SAMPLE_FMT_U8:
1980         {
1981             uint8_t *volp = samples;
1982             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1983                 int v = (((*volp - 128) * audio_volume + 128) >> 8) + 128;
1984                 *volp++ = av_clip_uint8(v);
1985             }
1986             break;
1987         }
1988         case AV_SAMPLE_FMT_S16:
1989         {
1990             int16_t *volp = samples;
1991             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1992                 int v = ((*volp) * audio_volume + 128) >> 8;
1993                 *volp++ = av_clip_int16(v);
1994             }
1995             break;
1996         }
1997         case AV_SAMPLE_FMT_S32:
1998         {
1999             int32_t *volp = samples;
2000             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
2001                 int64_t v = (((int64_t)*volp * audio_volume + 128) >> 8);
2002                 *volp++ = av_clipl_int32(v);
2003             }
2004             break;
2005         }
2006         case AV_SAMPLE_FMT_FLT:
2007         {
2008             float *volp = samples;
2009             float scale = audio_volume / 256.f;
2010             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
2011                 *volp++ *= scale;
2012             }
2013             break;
2014         }
2015         case AV_SAMPLE_FMT_DBL:
2016         {
2017             double *volp = samples;
2018             double scale = audio_volume / 256.;
2019             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
2020                 *volp++ *= scale;
2021             }
2022             break;
2023         }
2024         default:
2025             av_log(NULL, AV_LOG_FATAL,
2026                    "Audio volume adjustment on sample format %s is not supported.\n",
2027                    av_get_sample_fmt_name(ist->st->codec->sample_fmt));
2028             exit_program(1);
2029         }
2030     }
2031
2032     rate_emu_sleep(ist);
2033
2034     for (i = 0; i < nb_output_streams; i++) {
2035         OutputStream *ost = &output_streams[i];
2036
2037         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
2038             continue;
2039         do_audio_out(output_files[ost->file_index].ctx, ost, ist, decoded_frame);
2040     }
2041
2042     return ret;
2043 }
2044
2045 static int transcode_video(InputStream *ist, AVPacket *pkt, int *got_output, int64_t *pkt_pts, int64_t *pkt_dts)
2046 {
2047     AVFrame *decoded_frame, *filtered_frame = NULL;
2048     void *buffer_to_free = NULL;
2049     int i, ret = 0;
2050     float quality = 0;
2051 #if CONFIG_AVFILTER
2052     int frame_available = 1;
2053 #endif
2054     int duration=0;
2055     int64_t *best_effort_timestamp;
2056     AVRational *frame_sample_aspect;
2057
2058     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
2059         return AVERROR(ENOMEM);
2060     else
2061         avcodec_get_frame_defaults(ist->decoded_frame);
2062     decoded_frame = ist->decoded_frame;
2063     pkt->pts  = *pkt_pts;
2064     pkt->dts  = *pkt_dts;
2065     *pkt_pts  = AV_NOPTS_VALUE;
2066
2067     if (pkt->duration) {
2068         duration = av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
2069     } else if(ist->st->codec->time_base.num != 0) {
2070         int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
2071         duration = ((int64_t)AV_TIME_BASE *
2072                           ist->st->codec->time_base.num * ticks) /
2073                           ist->st->codec->time_base.den;
2074     }
2075
2076     if(*pkt_dts != AV_NOPTS_VALUE && duration) {
2077         *pkt_dts += duration;
2078     }else
2079         *pkt_dts = AV_NOPTS_VALUE;
2080
2081     ret = avcodec_decode_video2(ist->st->codec,
2082                                 decoded_frame, got_output, pkt);
2083     if (ret < 0)
2084         return ret;
2085
2086     quality = same_quant ? decoded_frame->quality : 0;
2087     if (!*got_output) {
2088         /* no picture yet */
2089         return ret;
2090     }
2091
2092     best_effort_timestamp= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "best_effort_timestamp");
2093     if(*best_effort_timestamp != AV_NOPTS_VALUE)
2094         ist->next_pts = ist->pts = *best_effort_timestamp;
2095
2096     ist->next_pts += duration;
2097     pkt->size = 0;
2098
2099     pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
2100
2101 #if CONFIG_AVFILTER
2102     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
2103     for(i=0;i<nb_output_streams;i++) {
2104         OutputStream *ost = ost = &output_streams[i];
2105         if(check_output_constraints(ist, ost) && ost->encoding_needed){
2106             if (!frame_sample_aspect->num)
2107                 *frame_sample_aspect = ist->st->sample_aspect_ratio;
2108             decoded_frame->pts = ist->pts;
2109             if (ist->dr1 && decoded_frame->type==FF_BUFFER_TYPE_USER) {
2110                 FrameBuffer      *buf = decoded_frame->opaque;
2111                 AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays(
2112                                             decoded_frame->data, decoded_frame->linesize,
2113                                             AV_PERM_READ | AV_PERM_PRESERVE,
2114                                             ist->st->codec->width, ist->st->codec->height,
2115                                             ist->st->codec->pix_fmt);
2116
2117                 avfilter_copy_frame_props(fb, decoded_frame);
2118                 fb->pts                 = ist->pts;
2119                 fb->buf->priv           = buf;
2120                 fb->buf->free           = filter_release_buffer;
2121
2122                 buf->refcount++;
2123                 av_buffersrc_buffer(ost->input_video_filter, fb);
2124             } else
2125             if((av_vsrc_buffer_add_frame(ost->input_video_filter, decoded_frame, AV_VSRC_BUF_FLAG_OVERWRITE)) < 0){
2126                 av_log(0, AV_LOG_FATAL, "Failed to inject frame into filter network\n");
2127                 exit_program(1);
2128             }
2129         }
2130     }
2131 #endif
2132
2133     rate_emu_sleep(ist);
2134
2135     for (i = 0; i < nb_output_streams; i++) {
2136         OutputStream *ost = &output_streams[i];
2137         int frame_size;
2138
2139         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
2140             continue;
2141
2142 #if CONFIG_AVFILTER
2143         if (ost->input_video_filter) {
2144             frame_available = av_buffersink_poll_frame(ost->output_video_filter);
2145         }
2146         while (frame_available) {
2147             if (ost->output_video_filter) {
2148                 AVRational ist_pts_tb = ost->output_video_filter->inputs[0]->time_base;
2149                 if (av_buffersink_get_buffer_ref(ost->output_video_filter, &ost->picref, 0) < 0){
2150                     av_log(0, AV_LOG_WARNING, "AV Filter told us it has a frame available but failed to output one\n");
2151                     goto cont;
2152                 }
2153                 if (!ist->filtered_frame && !(ist->filtered_frame = avcodec_alloc_frame())) {
2154                     av_free(buffer_to_free);
2155                     return AVERROR(ENOMEM);
2156                 } else
2157                     avcodec_get_frame_defaults(ist->filtered_frame);
2158                 filtered_frame = ist->filtered_frame;
2159                 *filtered_frame= *decoded_frame; //for me_threshold
2160                 if (ost->picref) {
2161                     avfilter_fill_frame_from_video_buffer_ref(filtered_frame, ost->picref);
2162                     ist->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
2163                 }
2164             }
2165             if (ost->picref->video && !ost->frame_aspect_ratio)
2166                 ost->st->codec->sample_aspect_ratio = ost->picref->video->sample_aspect_ratio;
2167 #else
2168             filtered_frame = decoded_frame;
2169 #endif
2170
2171             do_video_out(output_files[ost->file_index].ctx, ost, ist, filtered_frame, &frame_size,
2172                          same_quant ? quality : ost->st->codec->global_quality);
2173             if (vstats_filename && frame_size)
2174                 do_video_stats(output_files[ost->file_index].ctx, ost, frame_size);
2175 #if CONFIG_AVFILTER
2176             cont:
2177             frame_available = ost->output_video_filter && av_buffersink_poll_frame(ost->output_video_filter);
2178             avfilter_unref_buffer(ost->picref);
2179         }
2180 #endif
2181     }
2182
2183     av_free(buffer_to_free);
2184     return ret;
2185 }
2186
2187 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
2188 {
2189     AVSubtitle subtitle;
2190     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
2191                                           &subtitle, got_output, pkt);
2192     if (ret < 0)
2193         return ret;
2194     if (!*got_output)
2195         return ret;
2196
2197     rate_emu_sleep(ist);
2198
2199     for (i = 0; i < nb_output_streams; i++) {
2200         OutputStream *ost = &output_streams[i];
2201
2202         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
2203             continue;
2204
2205         do_subtitle_out(output_files[ost->file_index].ctx, ost, ist, &subtitle, pkt->pts);
2206     }
2207
2208     avsubtitle_free(&subtitle);
2209     return ret;
2210 }
2211
2212 /* pkt = NULL means EOF (needed to flush decoder buffers) */
2213 static int output_packet(InputStream *ist,
2214                          OutputStream *ost_table, int nb_ostreams,
2215                          const AVPacket *pkt)
2216 {
2217     int ret = 0, i;
2218     int got_output;
2219     int64_t pkt_dts = AV_NOPTS_VALUE;
2220     int64_t pkt_pts = AV_NOPTS_VALUE;
2221
2222     AVPacket avpkt;
2223
2224     if (ist->next_pts == AV_NOPTS_VALUE)
2225         ist->next_pts = ist->pts;
2226
2227     if (pkt == NULL) {
2228         /* EOF handling */
2229         av_init_packet(&avpkt);
2230         avpkt.data = NULL;
2231         avpkt.size = 0;
2232         goto handle_eof;
2233     } else {
2234         avpkt = *pkt;
2235     }
2236
2237     if (pkt->dts != AV_NOPTS_VALUE) {
2238         if (ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
2239             ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2240         pkt_dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2241     }
2242     if(pkt->pts != AV_NOPTS_VALUE)
2243         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
2244
2245     // while we have more to decode or while the decoder did output something on EOF
2246     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
2247     handle_eof:
2248
2249         ist->pts = ist->next_pts;
2250
2251         if (avpkt.size && avpkt.size != pkt->size) {
2252             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
2253                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
2254             ist->showed_multi_packet_warning = 1;
2255         }
2256
2257         switch (ist->st->codec->codec_type) {
2258         case AVMEDIA_TYPE_AUDIO:
2259             ret = transcode_audio    (ist, &avpkt, &got_output);
2260             break;
2261         case AVMEDIA_TYPE_VIDEO:
2262             ret = transcode_video    (ist, &avpkt, &got_output, &pkt_pts, &pkt_dts);
2263             break;
2264         case AVMEDIA_TYPE_SUBTITLE:
2265             ret = transcode_subtitles(ist, &avpkt, &got_output);
2266             break;
2267         default:
2268             return -1;
2269         }
2270
2271         if (ret < 0)
2272             return ret;
2273
2274         avpkt.dts=
2275         avpkt.pts= AV_NOPTS_VALUE;
2276
2277         // touch data and size only if not EOF
2278         if (pkt) {
2279             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
2280                 ret = avpkt.size;
2281             avpkt.data += ret;
2282             avpkt.size -= ret;
2283         }
2284         if (!got_output) {
2285             continue;
2286         }
2287     }
2288
2289     /* handle stream copy */
2290     if (!ist->decoding_needed) {
2291         rate_emu_sleep(ist);
2292         ist->pts = ist->next_pts;
2293         switch (ist->st->codec->codec_type) {
2294         case AVMEDIA_TYPE_AUDIO:
2295             ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
2296                              ist->st->codec->sample_rate;
2297             break;
2298         case AVMEDIA_TYPE_VIDEO:
2299             if (pkt->duration) {
2300                 ist->next_pts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
2301             } else if(ist->st->codec->time_base.num != 0) {
2302                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
2303                 ist->next_pts += ((int64_t)AV_TIME_BASE *
2304                                   ist->st->codec->time_base.num * ticks) /
2305                                   ist->st->codec->time_base.den;
2306             }
2307             break;
2308         }
2309     }
2310     for (i = 0; pkt && i < nb_ostreams; i++) {
2311         OutputStream *ost = &ost_table[i];
2312
2313         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
2314             continue;
2315
2316         do_streamcopy(ist, ost, pkt);
2317     }
2318
2319     return 0;
2320 }
2321
2322 static void print_sdp(OutputFile *output_files, int n)
2323 {
2324     char sdp[2048];
2325     int i;
2326     AVFormatContext **avc = av_malloc(sizeof(*avc) * n);
2327
2328     if (!avc)
2329         exit_program(1);
2330     for (i = 0; i < n; i++)
2331         avc[i] = output_files[i].ctx;
2332
2333     av_sdp_create(avc, n, sdp, sizeof(sdp));
2334     printf("SDP:\n%s\n", sdp);
2335     fflush(stdout);
2336     av_freep(&avc);
2337 }
2338
2339 static int init_input_stream(int ist_index, OutputStream *output_streams, int nb_output_streams,
2340                              char *error, int error_len)
2341 {
2342     InputStream *ist = &input_streams[ist_index];
2343     if (ist->decoding_needed) {
2344         AVCodec *codec = ist->dec;
2345         if (!codec) {
2346             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
2347                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
2348             return AVERROR(EINVAL);
2349         }
2350
2351         ist->dr1 = codec->capabilities & CODEC_CAP_DR1;
2352         if (codec->type == AVMEDIA_TYPE_VIDEO && ist->dr1) {
2353             ist->st->codec->get_buffer     = codec_get_buffer;
2354             ist->st->codec->release_buffer = codec_release_buffer;
2355             ist->st->codec->opaque         = ist;
2356         }
2357
2358         if (!av_dict_get(ist->opts, "threads", NULL, 0))
2359             av_dict_set(&ist->opts, "threads", "auto", 0);
2360         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
2361             snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
2362                     ist->file_index, ist->st->index);
2363             return AVERROR(EINVAL);
2364         }
2365         assert_codec_experimental(ist->st->codec, 0);
2366         assert_avoptions(ist->opts);
2367     }
2368
2369     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;
2370     ist->next_pts = AV_NOPTS_VALUE;
2371     ist->is_start = 1;
2372
2373     return 0;
2374 }
2375
2376 static int transcode_init(OutputFile *output_files, int nb_output_files,
2377                           InputFile  *input_files,  int nb_input_files)
2378 {
2379     int ret = 0, i, j, k;
2380     AVFormatContext *oc;
2381     AVCodecContext *codec, *icodec;
2382     OutputStream *ost;
2383     InputStream *ist;
2384     char error[1024];
2385     int want_sdp = 1;
2386
2387     /* init framerate emulation */
2388     for (i = 0; i < nb_input_files; i++) {
2389         InputFile *ifile = &input_files[i];
2390         if (ifile->rate_emu)
2391             for (j = 0; j < ifile->nb_streams; j++)
2392                 input_streams[j + ifile->ist_index].start = av_gettime();
2393     }
2394
2395     /* output stream init */
2396     for (i = 0; i < nb_output_files; i++) {
2397         oc = output_files[i].ctx;
2398         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2399             av_dump_format(oc, i, oc->filename, 1);
2400             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2401             return AVERROR(EINVAL);
2402         }
2403     }
2404
2405     /* for each output stream, we compute the right encoding parameters */
2406     for (i = 0; i < nb_output_streams; i++) {
2407         ost = &output_streams[i];
2408         oc  = output_files[ost->file_index].ctx;
2409         ist = &input_streams[ost->source_index];
2410
2411         if (ost->attachment_filename)
2412             continue;
2413
2414         codec  = ost->st->codec;
2415         icodec = ist->st->codec;
2416
2417         ost->st->disposition          = ist->st->disposition;
2418         codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
2419         codec->chroma_sample_location = icodec->chroma_sample_location;
2420
2421         if (ost->stream_copy) {
2422             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2423
2424             if (extra_size > INT_MAX) {
2425                 return AVERROR(EINVAL);
2426             }
2427
2428             /* if stream_copy is selected, no need to decode or encode */
2429             codec->codec_id   = icodec->codec_id;
2430             codec->codec_type = icodec->codec_type;
2431
2432             if (!codec->codec_tag) {
2433                 if (!oc->oformat->codec_tag ||
2434                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2435                      av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
2436                     codec->codec_tag = icodec->codec_tag;
2437             }
2438
2439             codec->bit_rate       = icodec->bit_rate;
2440             codec->rc_max_rate    = icodec->rc_max_rate;
2441             codec->rc_buffer_size = icodec->rc_buffer_size;
2442             codec->field_order    = icodec->field_order;
2443             codec->extradata      = av_mallocz(extra_size);
2444             if (!codec->extradata) {
2445                 return AVERROR(ENOMEM);
2446             }
2447             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2448             codec->extradata_size= icodec->extradata_size;
2449
2450             codec->time_base = ist->st->time_base;
2451             /*
2452              * Avi is a special case here because it supports variable fps but
2453              * having the fps and timebase differe significantly adds quite some
2454              * overhead
2455              */
2456             if(!strcmp(oc->oformat->name, "avi")) {
2457                 if (   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2458                                  && av_q2d(ist->st->time_base) < 1.0/500
2459                     || copy_tb==0){
2460                     codec->time_base = icodec->time_base;
2461                     codec->time_base.num *= icodec->ticks_per_frame;
2462                     codec->time_base.den *= 2;
2463                 }
2464             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2465                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2466                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2467             ) {
2468                 if(   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
2469                                 && av_q2d(ist->st->time_base) < 1.0/500
2470                    || copy_tb==0){
2471                     codec->time_base = icodec->time_base;
2472                     codec->time_base.num *= icodec->ticks_per_frame;
2473                 }
2474             }
2475             av_reduce(&codec->time_base.num, &codec->time_base.den,
2476                         codec->time_base.num, codec->time_base.den, INT_MAX);
2477
2478             switch (codec->codec_type) {
2479             case AVMEDIA_TYPE_AUDIO:
2480                 if (audio_volume != 256) {
2481                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2482                     exit_program(1);
2483                 }
2484                 codec->channel_layout     = icodec->channel_layout;
2485                 codec->sample_rate        = icodec->sample_rate;
2486                 codec->channels           = icodec->channels;
2487                 codec->frame_size         = icodec->frame_size;
2488                 codec->audio_service_type = icodec->audio_service_type;
2489                 codec->block_align        = icodec->block_align;
2490                 break;
2491             case AVMEDIA_TYPE_VIDEO:
2492                 codec->pix_fmt            = icodec->pix_fmt;
2493                 codec->width              = icodec->width;
2494                 codec->height             = icodec->height;
2495                 codec->has_b_frames       = icodec->has_b_frames;
2496                 if (!codec->sample_aspect_ratio.num) {
2497                     codec->sample_aspect_ratio   =
2498                     ost->st->sample_aspect_ratio =
2499                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2500                         ist->st->codec->sample_aspect_ratio.num ?
2501                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2502                 }
2503                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2504                 break;
2505             case AVMEDIA_TYPE_SUBTITLE:
2506                 codec->width  = icodec->width;
2507                 codec->height = icodec->height;
2508                 break;
2509             case AVMEDIA_TYPE_DATA:
2510             case AVMEDIA_TYPE_ATTACHMENT:
2511                 break;
2512             default:
2513                 abort();
2514             }
2515         } else {
2516             if (!ost->enc)
2517                 ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
2518
2519             ist->decoding_needed = 1;
2520             ost->encoding_needed = 1;
2521
2522             switch (codec->codec_type) {
2523             case AVMEDIA_TYPE_AUDIO:
2524                 ost->fifo = av_fifo_alloc(1024);
2525                 if (!ost->fifo) {
2526                     return AVERROR(ENOMEM);
2527                 }
2528                 if (!codec->sample_rate)
2529                     codec->sample_rate = icodec->sample_rate;
2530                 choose_sample_rate(ost->st, ost->enc);
2531                 codec->time_base = (AVRational){ 1, codec->sample_rate };
2532
2533                 if (codec->sample_fmt == AV_SAMPLE_FMT_NONE)
2534                     codec->sample_fmt = icodec->sample_fmt;
2535                 choose_sample_fmt(ost->st, ost->enc);
2536
2537                 if (ost->audio_channels_mapped) {
2538                     /* the requested output channel is set to the number of
2539                      * -map_channel only if no -ac are specified */
2540                     if (!codec->channels) {
2541                         codec->channels       = ost->audio_channels_mapped;
2542                         codec->channel_layout = av_get_default_channel_layout(codec->channels);
2543                         if (!codec->channel_layout) {
2544                             av_log(NULL, AV_LOG_FATAL, "Unable to find an appropriate channel layout for requested number of channel\n");
2545                             exit_program(1);
2546                         }
2547                     }
2548                     /* fill unused channel mapping with -1 (which means a muted
2549                      * channel in case the number of output channels is bigger
2550                      * than the number of mapped channel) */
2551                     for (j = ost->audio_channels_mapped; j < FF_ARRAY_ELEMS(ost->audio_channels_map); j++)
2552                         ost->audio_channels_map[j] = -1;
2553                 } else if (!codec->channels) {
2554                     codec->channels = icodec->channels;
2555                     codec->channel_layout = icodec->channel_layout;
2556                 }
2557                 if (av_get_channel_layout_nb_channels(codec->channel_layout) != codec->channels)
2558                     codec->channel_layout = 0;
2559
2560                 ost->audio_resample       = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
2561                 ost->audio_resample      |=    codec->sample_fmt     != icodec->sample_fmt
2562                                             || codec->channel_layout != icodec->channel_layout;
2563                 icodec->request_channels  = codec->channels;
2564                 ost->resample_sample_fmt  = icodec->sample_fmt;
2565                 ost->resample_sample_rate = icodec->sample_rate;
2566                 ost->resample_channels    = icodec->channels;
2567                 break;
2568             case AVMEDIA_TYPE_VIDEO:
2569                 if (codec->pix_fmt == PIX_FMT_NONE)
2570                     codec->pix_fmt = icodec->pix_fmt;
2571                 choose_pixel_fmt(ost->st, ost->enc);
2572
2573                 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2574                     av_log(NULL, AV_LOG_FATAL, "Video pixel format is unknown, stream cannot be encoded\n");
2575                     exit_program(1);
2576                 }
2577
2578                 if (!codec->width || !codec->height) {
2579                     codec->width  = icodec->width;
2580                     codec->height = icodec->height;
2581                 }
2582
2583                 ost->video_resample = codec->width   != icodec->width  ||
2584                                       codec->height  != icodec->height ||
2585                                       codec->pix_fmt != icodec->pix_fmt;
2586                 if (ost->video_resample) {
2587                     codec->bits_per_raw_sample = frame_bits_per_raw_sample;
2588                 }
2589
2590                 ost->resample_height  = icodec->height;
2591                 ost->resample_width   = icodec->width;
2592                 ost->resample_pix_fmt = icodec->pix_fmt;
2593
2594                 if (!ost->frame_rate.num)
2595                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational) { 25, 1 };
2596                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2597                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2598                     ost->frame_rate = ost->enc->supported_framerates[idx];
2599                 }
2600                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
2601                 if (   av_q2d(codec->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
2602                    && (video_sync_method == VSYNC_CFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
2603                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not effciciently supporting it.\n"
2604                                                "Please consider specifiying a lower framerate, a different muxer or -vsync 2\n");
2605                 }
2606                 for (j = 0; j < ost->forced_kf_count; j++)
2607                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2608                                                          AV_TIME_BASE_Q,
2609                                                          codec->time_base);
2610
2611 #if CONFIG_AVFILTER
2612                 if (configure_video_filters(ist, ost)) {
2613                     av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2614                     exit(1);
2615                 }
2616 #endif
2617                 break;
2618             case AVMEDIA_TYPE_SUBTITLE:
2619                 codec->time_base = (AVRational){1, 1000};
2620                 break;
2621             default:
2622                 abort();
2623                 break;
2624             }
2625             /* two pass mode */
2626             if (codec->codec_id != CODEC_ID_H264 &&
2627                 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2628                 char logfilename[1024];
2629                 FILE *f;
2630
2631                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2632                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2633                          i);
2634                 if (codec->flags & CODEC_FLAG_PASS2) {
2635                     char  *logbuffer;
2636                     size_t logbuffer_size;
2637                     if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2638                         av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2639                                logfilename);
2640                         exit_program(1);
2641                     }
2642                     codec->stats_in = logbuffer;
2643                 }
2644                 if (codec->flags & CODEC_FLAG_PASS1) {
2645                     f = fopen(logfilename, "wb");
2646                     if (!f) {
2647                         av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2648                                logfilename, strerror(errno));
2649                         exit_program(1);
2650                     }
2651                     ost->logfile = f;
2652                 }
2653             }
2654         }
2655         if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2656             /* maximum video buffer size is 8-bytes per pixel, plus DPX header size (1664)*/
2657             int size        = codec->width * codec->height;
2658             bit_buffer_size = FFMAX(bit_buffer_size, 9*size + 10000);
2659         }
2660     }
2661
2662     if (!bit_buffer)
2663         bit_buffer = av_malloc(bit_buffer_size);
2664     if (!bit_buffer) {
2665         av_log(NULL, AV_LOG_ERROR, "Cannot allocate %d bytes output buffer\n",
2666                bit_buffer_size);
2667         return AVERROR(ENOMEM);
2668     }
2669
2670     /* open each encoder */
2671     for (i = 0; i < nb_output_streams; i++) {
2672         ost = &output_streams[i];
2673         if (ost->encoding_needed) {
2674             AVCodec      *codec = ost->enc;
2675             AVCodecContext *dec = input_streams[ost->source_index].st->codec;
2676             if (!codec) {
2677                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
2678                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2679                 ret = AVERROR(EINVAL);
2680                 goto dump_format;
2681             }
2682             if (dec->subtitle_header) {
2683                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2684                 if (!ost->st->codec->subtitle_header) {
2685                     ret = AVERROR(ENOMEM);
2686                     goto dump_format;
2687                 }
2688                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2689                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2690             }
2691             if (!av_dict_get(ost->opts, "threads", NULL, 0))
2692                 av_dict_set(&ost->opts, "threads", "auto", 0);
2693             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2694                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2695                         ost->file_index, ost->index);
2696                 ret = AVERROR(EINVAL);
2697                 goto dump_format;
2698             }
2699             assert_codec_experimental(ost->st->codec, 1);
2700             assert_avoptions(ost->opts);
2701             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2702                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2703                                              " It takes bits/s as argument, not kbits/s\n");
2704             extra_size += ost->st->codec->extradata_size;
2705
2706             if (ost->st->codec->me_threshold)
2707                 input_streams[ost->source_index].st->codec->debug |= FF_DEBUG_MV;
2708         }
2709     }
2710
2711     /* init input streams */
2712     for (i = 0; i < nb_input_streams; i++)
2713         if ((ret = init_input_stream(i, output_streams, nb_output_streams, error, sizeof(error))) < 0)
2714             goto dump_format;
2715
2716     /* discard unused programs */
2717     for (i = 0; i < nb_input_files; i++) {
2718         InputFile *ifile = &input_files[i];
2719         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2720             AVProgram *p = ifile->ctx->programs[j];
2721             int discard  = AVDISCARD_ALL;
2722
2723             for (k = 0; k < p->nb_stream_indexes; k++)
2724                 if (!input_streams[ifile->ist_index + p->stream_index[k]].discard) {
2725                     discard = AVDISCARD_DEFAULT;
2726                     break;
2727                 }
2728             p->discard = discard;
2729         }
2730     }
2731
2732     /* open files and write file headers */
2733     for (i = 0; i < nb_output_files; i++) {
2734         oc = output_files[i].ctx;
2735         oc->interrupt_callback = int_cb;
2736         if (avformat_write_header(oc, &output_files[i].opts) < 0) {
2737             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2738             ret = AVERROR(EINVAL);
2739             goto dump_format;
2740         }
2741 //        assert_avoptions(output_files[i].opts);
2742         if (strcmp(oc->oformat->name, "rtp")) {
2743             want_sdp = 0;
2744         }
2745     }
2746
2747  dump_format:
2748     /* dump the file output parameters - cannot be done before in case
2749        of stream copy */
2750     for (i = 0; i < nb_output_files; i++) {
2751         av_dump_format(output_files[i].ctx, i, output_files[i].ctx->filename, 1);
2752     }
2753
2754     /* dump the stream mapping */
2755     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2756     for (i = 0; i < nb_output_streams; i++) {
2757         ost = &output_streams[i];
2758
2759         if (ost->attachment_filename) {
2760             /* an attached file */
2761             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
2762                    ost->attachment_filename, ost->file_index, ost->index);
2763             continue;
2764         }
2765         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
2766                input_streams[ost->source_index].file_index,
2767                input_streams[ost->source_index].st->index,
2768                ost->file_index,
2769                ost->index);
2770         if (ost->audio_channels_mapped) {
2771             av_log(NULL, AV_LOG_INFO, " [ch:");
2772             for (j = 0; j < ost->audio_channels_mapped; j++)
2773                 if (ost->audio_channels_map[j] == -1)
2774                     av_log(NULL, AV_LOG_INFO, " M");
2775                 else
2776                     av_log(NULL, AV_LOG_INFO, " %d", ost->audio_channels_map[j]);
2777             av_log(NULL, AV_LOG_INFO, "]");
2778         }
2779         if (ost->sync_ist != &input_streams[ost->source_index])
2780             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2781                    ost->sync_ist->file_index,
2782                    ost->sync_ist->st->index);
2783         if (ost->stream_copy)
2784             av_log(NULL, AV_LOG_INFO, " (copy)");
2785         else
2786             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index].dec ?
2787                    input_streams[ost->source_index].dec->name : "?",
2788                    ost->enc ? ost->enc->name : "?");
2789         av_log(NULL, AV_LOG_INFO, "\n");
2790     }
2791
2792     if (ret) {
2793         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2794         return ret;
2795     }
2796
2797     if (want_sdp) {
2798         print_sdp(output_files, nb_output_files);
2799     }
2800
2801     return 0;
2802 }
2803
2804 /*
2805  * The following code is the main loop of the file converter
2806  */
2807 static int transcode(OutputFile *output_files, int nb_output_files,
2808                      InputFile  *input_files,  int nb_input_files)
2809 {
2810     int ret, i;
2811     AVFormatContext *is, *os;
2812     OutputStream *ost;
2813     InputStream *ist;
2814     uint8_t *no_packet;
2815     int no_packet_count = 0;
2816     int64_t timer_start;
2817     int key;
2818
2819     if (!(no_packet = av_mallocz(nb_input_files)))
2820         exit_program(1);
2821
2822     ret = transcode_init(output_files, nb_output_files, input_files, nb_input_files);
2823     if (ret < 0)
2824         goto fail;
2825
2826     if (!using_stdin) {
2827         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
2828     }
2829
2830     timer_start = av_gettime();
2831
2832     for (; received_sigterm == 0;) {
2833         int file_index, ist_index;
2834         AVPacket pkt;
2835         int64_t ipts_min;
2836         double opts_min;
2837         int64_t cur_time= av_gettime();
2838
2839         ipts_min = INT64_MAX;
2840         opts_min = 1e100;
2841         /* if 'q' pressed, exits */
2842         if (!using_stdin) {
2843             static int64_t last_time;
2844             if (received_nb_signals)
2845                 break;
2846             /* read_key() returns 0 on EOF */
2847             if(cur_time - last_time >= 100000 && !run_as_daemon){
2848                 key =  read_key();
2849                 last_time = cur_time;
2850             }else
2851                 key = -1;
2852             if (key == 'q')
2853                 break;
2854             if (key == '+') av_log_set_level(av_log_get_level()+10);
2855             if (key == '-') av_log_set_level(av_log_get_level()-10);
2856             if (key == 's') qp_hist     ^= 1;
2857             if (key == 'h'){
2858                 if (do_hex_dump){
2859                     do_hex_dump = do_pkt_dump = 0;
2860                 } else if(do_pkt_dump){
2861                     do_hex_dump = 1;
2862                 } else
2863                     do_pkt_dump = 1;
2864                 av_log_set_level(AV_LOG_DEBUG);
2865             }
2866 #if CONFIG_AVFILTER
2867             if (key == 'c' || key == 'C'){
2868                 char buf[4096], target[64], command[256], arg[256] = {0};
2869                 double time;
2870                 int k, n = 0;
2871                 fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
2872                 i = 0;
2873                 while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
2874                     if (k > 0)
2875                         buf[i++] = k;
2876                 buf[i] = 0;
2877                 if (k > 0 &&
2878                     (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
2879                     av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
2880                            target, time, command, arg);
2881                     for (i = 0; i < nb_output_streams; i++) {
2882                         ost = &output_streams[i];
2883                         if (ost->graph) {
2884                             if (time < 0) {
2885                                 ret = avfilter_graph_send_command(ost->graph, target, command, arg, buf, sizeof(buf),
2886                                                                   key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
2887                                 fprintf(stderr, "Command reply for stream %d: ret:%d res:%s\n", i, ret, buf);
2888                             } else {
2889                                 ret = avfilter_graph_queue_command(ost->graph, target, command, arg, 0, time);
2890                             }
2891                         }
2892                     }
2893                 } else {
2894                     av_log(NULL, AV_LOG_ERROR,
2895                            "Parse error, at least 3 arguments were expected, "
2896                            "only %d given in string '%s'\n", n, buf);
2897                 }
2898             }
2899 #endif
2900             if (key == 'd' || key == 'D'){
2901                 int debug=0;
2902                 if(key == 'D') {
2903                     debug = input_streams[0].st->codec->debug<<1;
2904                     if(!debug) debug = 1;
2905                     while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2906                         debug += debug;
2907                 }else
2908                     if(scanf("%d", &debug)!=1)
2909                         fprintf(stderr,"error parsing debug value\n");
2910                 for(i=0;i<nb_input_streams;i++) {
2911                     input_streams[i].st->codec->debug = debug;
2912                 }
2913                 for(i=0;i<nb_output_streams;i++) {
2914                     ost = &output_streams[i];
2915                     ost->st->codec->debug = debug;
2916                 }
2917                 if(debug) av_log_set_level(AV_LOG_DEBUG);
2918                 fprintf(stderr,"debug=%d\n", debug);
2919             }
2920             if (key == '?'){
2921                 fprintf(stderr, "key    function\n"
2922                                 "?      show this help\n"
2923                                 "+      increase verbosity\n"
2924                                 "-      decrease verbosity\n"
2925                                 "c      Send command to filtergraph\n"
2926                                 "D      cycle through available debug modes\n"
2927                                 "h      dump packets/hex press to cycle through the 3 states\n"
2928                                 "q      quit\n"
2929                                 "s      Show QP histogram\n"
2930                 );
2931             }
2932         }
2933
2934         /* select the stream that we must read now by looking at the
2935            smallest output pts */
2936         file_index = -1;
2937         for (i = 0; i < nb_output_streams; i++) {
2938             OutputFile *of;
2939             int64_t ipts;
2940             double  opts;
2941             ost = &output_streams[i];
2942             of = &output_files[ost->file_index];
2943             os = output_files[ost->file_index].ctx;
2944             ist = &input_streams[ost->source_index];
2945             if (ost->is_past_recording_time || no_packet[ist->file_index] ||
2946                 (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2947                 continue;
2948             opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2949             ipts = ist->pts;
2950             if (!input_files[ist->file_index].eof_reached) {
2951                 if (ipts < ipts_min) {
2952                     ipts_min = ipts;
2953                     if (input_sync)
2954                         file_index = ist->file_index;
2955                 }
2956                 if (opts < opts_min) {
2957                     opts_min = opts;
2958                     if (!input_sync) file_index = ist->file_index;
2959                 }
2960             }
2961             if (ost->frame_number >= ost->max_frames) {
2962                 int j;
2963                 for (j = 0; j < of->ctx->nb_streams; j++)
2964                     output_streams[of->ost_index + j].is_past_recording_time = 1;
2965                 continue;
2966             }
2967         }
2968         /* if none, if is finished */
2969         if (file_index < 0) {
2970             if (no_packet_count) {
2971                 no_packet_count = 0;
2972                 memset(no_packet, 0, nb_input_files);
2973                 usleep(10000);
2974                 continue;
2975             }
2976             break;
2977         }
2978
2979         /* read a frame from it and output it in the fifo */
2980         is  = input_files[file_index].ctx;
2981         ret = av_read_frame(is, &pkt);
2982         if (ret == AVERROR(EAGAIN)) {
2983             no_packet[file_index] = 1;
2984             no_packet_count++;
2985             continue;
2986         }
2987         if (ret < 0) {
2988             input_files[file_index].eof_reached = 1;
2989             if (opt_shortest)
2990                 break;
2991             else
2992                 continue;
2993         }
2994
2995         no_packet_count = 0;
2996         memset(no_packet, 0, nb_input_files);
2997
2998         if (do_pkt_dump) {
2999             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
3000                              is->streams[pkt.stream_index]);
3001         }
3002         /* the following test is needed in case new streams appear
3003            dynamically in stream : we ignore them */
3004         if (pkt.stream_index >= input_files[file_index].nb_streams)
3005             goto discard_packet;
3006         ist_index = input_files[file_index].ist_index + pkt.stream_index;
3007         ist = &input_streams[ist_index];
3008         if (ist->discard)
3009             goto discard_packet;
3010
3011         if (pkt.dts != AV_NOPTS_VALUE)
3012             pkt.dts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
3013         if (pkt.pts != AV_NOPTS_VALUE)
3014             pkt.pts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
3015
3016         if (pkt.pts != AV_NOPTS_VALUE)
3017             pkt.pts *= ist->ts_scale;
3018         if (pkt.dts != AV_NOPTS_VALUE)
3019             pkt.dts *= ist->ts_scale;
3020
3021         //fprintf(stderr, "next:%"PRId64" dts:%"PRId64" off:%"PRId64" %d\n",
3022         //        ist->next_pts,
3023         //        pkt.dts, input_files[ist->file_index].ts_offset,
3024         //        ist->st->codec->codec_type);
3025         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
3026             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
3027             int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3028             int64_t delta   = pkt_dts - ist->next_pts;
3029             if((delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
3030                 (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
3031                  ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
3032                 pkt_dts+1<ist->pts)&& !copy_ts){
3033                 input_files[ist->file_index].ts_offset -= delta;
3034                 av_log(NULL, AV_LOG_DEBUG,
3035                        "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
3036                        delta, input_files[ist->file_index].ts_offset);
3037                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3038                 if (pkt.pts != AV_NOPTS_VALUE)
3039                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3040             }
3041         }
3042
3043         // fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
3044         if (output_packet(ist, output_streams, nb_output_streams, &pkt) < 0) {
3045
3046             av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d\n",
3047                    ist->file_index, ist->st->index);
3048             if (exit_on_error)
3049                 exit_program(1);
3050             av_free_packet(&pkt);
3051             continue;
3052         }
3053
3054     discard_packet:
3055         av_free_packet(&pkt);
3056
3057         /* dump report by using the output first video and audio streams */
3058         print_report(output_files, output_streams, nb_output_streams, 0, timer_start, cur_time);
3059     }
3060
3061     /* at the end of stream, we must flush the decoder buffers */
3062     for (i = 0; i < nb_input_streams; i++) {
3063         ist = &input_streams[i];
3064         if (ist->decoding_needed) {
3065             output_packet(ist, output_streams, nb_output_streams, NULL);
3066         }
3067     }
3068     flush_encoders(output_streams, nb_output_streams);
3069
3070     term_exit();
3071
3072     /* write the trailer if needed and close file */
3073     for (i = 0; i < nb_output_files; i++) {
3074         os = output_files[i].ctx;
3075         av_write_trailer(os);
3076     }
3077
3078     /* dump report by using the first video and audio streams */
3079     print_report(output_files, output_streams, nb_output_streams, 1, timer_start, av_gettime());
3080
3081     /* close each encoder */
3082     for (i = 0; i < nb_output_streams; i++) {
3083         ost = &output_streams[i];
3084         if (ost->encoding_needed) {
3085             av_freep(&ost->st->codec->stats_in);
3086             avcodec_close(ost->st->codec);
3087         }
3088 #if CONFIG_AVFILTER
3089         avfilter_graph_free(&ost->graph);
3090 #endif
3091     }
3092
3093     /* close each decoder */
3094     for (i = 0; i < nb_input_streams; i++) {
3095         ist = &input_streams[i];
3096         if (ist->decoding_needed) {
3097             avcodec_close(ist->st->codec);
3098         }
3099     }
3100
3101     /* finished ! */
3102     ret = 0;
3103
3104  fail:
3105     av_freep(&bit_buffer);
3106     av_freep(&no_packet);
3107
3108     if (output_streams) {
3109         for (i = 0; i < nb_output_streams; i++) {
3110             ost = &output_streams[i];
3111             if (ost) {
3112                 if (ost->stream_copy)
3113                     av_freep(&ost->st->codec->extradata);
3114                 if (ost->logfile) {
3115                     fclose(ost->logfile);
3116                     ost->logfile = NULL;
3117                 }
3118                 av_fifo_free(ost->fifo); /* works even if fifo is not
3119                                              initialized but set to zero */
3120                 av_freep(&ost->st->codec->subtitle_header);
3121                 av_free(ost->resample_frame.data[0]);
3122                 av_free(ost->forced_kf_pts);
3123                 if (ost->video_resample)
3124                     sws_freeContext(ost->img_resample_ctx);
3125                 swr_free(&ost->swr);
3126                 av_dict_free(&ost->opts);
3127             }
3128         }
3129     }
3130     return ret;
3131 }
3132
3133 static int opt_frame_crop(const char *opt, const char *arg)
3134 {
3135     av_log(NULL, AV_LOG_FATAL, "Option '%s' has been removed, use the crop filter instead\n", opt);
3136     return AVERROR(EINVAL);
3137 }
3138
3139 static int opt_pad(const char *opt, const char *arg)
3140 {
3141     av_log(NULL, AV_LOG_FATAL, "Option '%s' has been removed, use the pad filter instead\n", opt);
3142     return -1;
3143 }
3144
3145 static int opt_video_channel(const char *opt, const char *arg)
3146 {
3147     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -channel.\n");
3148     return opt_default("channel", arg);
3149 }
3150
3151 static int opt_video_standard(const char *opt, const char *arg)
3152 {
3153     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -standard.\n");
3154     return opt_default("standard", arg);
3155 }
3156
3157 static int opt_audio_codec(OptionsContext *o, const char *opt, const char *arg)
3158 {
3159     audio_codec_name = arg;
3160     return parse_option(o, "codec:a", arg, options);
3161 }
3162
3163 static int opt_video_codec(OptionsContext *o, const char *opt, const char *arg)
3164 {
3165     video_codec_name = arg;
3166     return parse_option(o, "codec:v", arg, options);
3167 }
3168
3169 static int opt_subtitle_codec(OptionsContext *o, const char *opt, const char *arg)
3170 {
3171     subtitle_codec_name = arg;
3172     return parse_option(o, "codec:s", arg, options);
3173 }
3174
3175 static int opt_data_codec(OptionsContext *o, const char *opt, const char *arg)
3176 {
3177     return parse_option(o, "codec:d", arg, options);
3178 }
3179
3180 static int opt_map(OptionsContext *o, const char *opt, const char *arg)
3181 {
3182     StreamMap *m = NULL;
3183     int i, negative = 0, file_idx;
3184     int sync_file_idx = -1, sync_stream_idx = 0;
3185     char *p, *sync;
3186     char *map;
3187
3188     if (*arg == '-') {
3189         negative = 1;
3190         arg++;
3191     }
3192     map = av_strdup(arg);
3193
3194     /* parse sync stream first, just pick first matching stream */
3195     if (sync = strchr(map, ',')) {
3196         *sync = 0;
3197         sync_file_idx = strtol(sync + 1, &sync, 0);
3198         if (sync_file_idx >= nb_input_files || sync_file_idx < 0) {
3199             av_log(NULL, AV_LOG_FATAL, "Invalid sync file index: %d.\n", sync_file_idx);
3200             exit_program(1);
3201         }
3202         if (*sync)
3203             sync++;
3204         for (i = 0; i < input_files[sync_file_idx].nb_streams; i++)
3205             if (check_stream_specifier(input_files[sync_file_idx].ctx,
3206                                        input_files[sync_file_idx].ctx->streams[i], sync) == 1) {
3207                 sync_stream_idx = i;
3208                 break;
3209             }
3210         if (i == input_files[sync_file_idx].nb_streams) {
3211             av_log(NULL, AV_LOG_FATAL, "Sync stream specification in map %s does not "
3212                                        "match any streams.\n", arg);
3213             exit_program(1);
3214         }
3215     }
3216
3217
3218     file_idx = strtol(map, &p, 0);
3219     if (file_idx >= nb_input_files || file_idx < 0) {
3220         av_log(NULL, AV_LOG_FATAL, "Invalid input file index: %d.\n", file_idx);
3221         exit_program(1);
3222     }
3223     if (negative)
3224         /* disable some already defined maps */
3225         for (i = 0; i < o->nb_stream_maps; i++) {
3226             m = &o->stream_maps[i];
3227             if (file_idx == m->file_index &&
3228                 check_stream_specifier(input_files[m->file_index].ctx,
3229                                        input_files[m->file_index].ctx->streams[m->stream_index],
3230                                        *p == ':' ? p + 1 : p) > 0)
3231                 m->disabled = 1;
3232         }
3233     else
3234         for (i = 0; i < input_files[file_idx].nb_streams; i++) {
3235             if (check_stream_specifier(input_files[file_idx].ctx, input_files[file_idx].ctx->streams[i],
3236                         *p == ':' ? p + 1 : p) <= 0)
3237                 continue;
3238             o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
3239                                         &o->nb_stream_maps, o->nb_stream_maps + 1);
3240             m = &o->stream_maps[o->nb_stream_maps - 1];
3241
3242             m->file_index   = file_idx;
3243             m->stream_index = i;
3244
3245             if (sync_file_idx >= 0) {
3246                 m->sync_file_index   = sync_file_idx;
3247                 m->sync_stream_index = sync_stream_idx;
3248             } else {
3249                 m->sync_file_index   = file_idx;
3250                 m->sync_stream_index = i;
3251             }
3252         }
3253
3254     if (!m) {
3255         av_log(NULL, AV_LOG_FATAL, "Stream map '%s' matches no streams.\n", arg);
3256         exit_program(1);
3257     }
3258
3259     av_freep(&map);
3260     return 0;
3261 }
3262
3263 static int opt_attach(OptionsContext *o, const char *opt, const char *arg)
3264 {
3265     o->attachments = grow_array(o->attachments, sizeof(*o->attachments),
3266                                 &o->nb_attachments, o->nb_attachments + 1);
3267     o->attachments[o->nb_attachments - 1] = arg;
3268     return 0;
3269 }
3270
3271 static int opt_map_channel(OptionsContext *o, const char *opt, const char *arg)
3272 {
3273     int n;
3274     AVStream *st;
3275     AudioChannelMap *m;
3276
3277     o->audio_channel_maps =
3278         grow_array(o->audio_channel_maps, sizeof(*o->audio_channel_maps),
3279                    &o->nb_audio_channel_maps, o->nb_audio_channel_maps + 1);
3280     m = &o->audio_channel_maps[o->nb_audio_channel_maps - 1];
3281
3282     /* muted channel syntax */
3283     n = sscanf(arg, "%d:%d.%d", &m->channel_idx, &m->ofile_idx, &m->ostream_idx);
3284     if ((n == 1 || n == 3) && m->channel_idx == -1) {
3285         m->file_idx = m->stream_idx = -1;
3286         if (n == 1)
3287             m->ofile_idx = m->ostream_idx = -1;
3288         return 0;
3289     }
3290
3291     /* normal syntax */
3292     n = sscanf(arg, "%d.%d.%d:%d.%d",
3293                &m->file_idx,  &m->stream_idx, &m->channel_idx,
3294                &m->ofile_idx, &m->ostream_idx);
3295
3296     if (n != 3 && n != 5) {
3297         av_log(NULL, AV_LOG_FATAL, "Syntax error, mapchan usage: "
3298                "[file.stream.channel|-1][:syncfile:syncstream]\n");
3299         exit_program(1);
3300     }
3301
3302     if (n != 5) // only file.stream.channel specified
3303         m->ofile_idx = m->ostream_idx = -1;
3304
3305     /* check input */
3306     if (m->file_idx < 0 || m->file_idx >= nb_input_files) {
3307         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid input file index: %d\n",
3308                m->file_idx);
3309         exit_program(1);
3310     }
3311     if (m->stream_idx < 0 ||
3312         m->stream_idx >= input_files[m->file_idx].nb_streams) {
3313         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid input file stream index #%d.%d\n",
3314                m->file_idx, m->stream_idx);
3315         exit_program(1);
3316     }
3317     st = input_files[m->file_idx].ctx->streams[m->stream_idx];
3318     if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO) {
3319         av_log(NULL, AV_LOG_FATAL, "mapchan: stream #%d.%d is not an audio stream.\n",
3320                m->file_idx, m->stream_idx);
3321         exit_program(1);
3322     }
3323     if (m->channel_idx < 0 || m->channel_idx >= st->codec->channels) {
3324         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid audio channel #%d.%d.%d\n",
3325                m->file_idx, m->stream_idx, m->channel_idx);
3326         exit_program(1);
3327     }
3328     return 0;
3329 }
3330
3331 /**
3332  * Parse a metadata specifier in arg.
3333  * @param type metadata type is written here -- g(lobal)/s(tream)/c(hapter)/p(rogram)
3334  * @param index for type c/p, chapter/program index is written here
3335  * @param stream_spec for type s, the stream specifier is written here
3336  */
3337 static void parse_meta_type(char *arg, char *type, int *index, const char **stream_spec)
3338 {
3339     if (*arg) {
3340         *type = *arg;
3341         switch (*arg) {
3342         case 'g':
3343             break;
3344         case 's':
3345             if (*(++arg) && *arg != ':') {
3346                 av_log(NULL, AV_LOG_FATAL, "Invalid metadata specifier %s.\n", arg);
3347                 exit_program(1);
3348             }
3349             *stream_spec = *arg == ':' ? arg + 1 : "";
3350             break;
3351         case 'c':
3352         case 'p':
3353             if (*(++arg) == ':')
3354                 *index = strtol(++arg, NULL, 0);
3355             break;
3356         default:
3357             av_log(NULL, AV_LOG_FATAL, "Invalid metadata type %c.\n", *arg);
3358             exit_program(1);
3359         }
3360     } else
3361         *type = 'g';
3362 }
3363
3364 static int copy_metadata(char *outspec, char *inspec, AVFormatContext *oc, AVFormatContext *ic, OptionsContext *o)
3365 {
3366     AVDictionary **meta_in = NULL;
3367     AVDictionary **meta_out = NULL;
3368     int i, ret = 0;
3369     char type_in, type_out;
3370     const char *istream_spec = NULL, *ostream_spec = NULL;
3371     int idx_in = 0, idx_out = 0;
3372
3373     parse_meta_type(inspec,  &type_in,  &idx_in,  &istream_spec);
3374     parse_meta_type(outspec, &type_out, &idx_out, &ostream_spec);
3375
3376     if (type_in == 'g' || type_out == 'g')
3377         o->metadata_global_manual = 1;
3378     if (type_in == 's' || type_out == 's')
3379         o->metadata_streams_manual = 1;
3380     if (type_in == 'c' || type_out == 'c')
3381         o->metadata_chapters_manual = 1;
3382
3383 #define METADATA_CHECK_INDEX(index, nb_elems, desc)\
3384     if ((index) < 0 || (index) >= (nb_elems)) {\
3385         av_log(NULL, AV_LOG_FATAL, "Invalid %s index %d while processing metadata maps.\n",\
3386                 (desc), (index));\
3387         exit_program(1);\
3388     }
3389
3390 #define SET_DICT(type, meta, context, index)\
3391         switch (type) {\
3392         case 'g':\
3393             meta = &context->metadata;\
3394             break;\
3395         case 'c':\
3396             METADATA_CHECK_INDEX(index, context->nb_chapters, "chapter")\
3397             meta = &context->chapters[index]->metadata;\
3398             break;\
3399         case 'p':\
3400             METADATA_CHECK_INDEX(index, context->nb_programs, "program")\
3401             meta = &context->programs[index]->metadata;\
3402             break;\
3403         }\
3404
3405     SET_DICT(type_in, meta_in, ic, idx_in);
3406     SET_DICT(type_out, meta_out, oc, idx_out);
3407
3408     /* for input streams choose first matching stream */
3409     if (type_in == 's') {
3410         for (i = 0; i < ic->nb_streams; i++) {
3411             if ((ret = check_stream_specifier(ic, ic->streams[i], istream_spec)) > 0) {
3412                 meta_in = &ic->streams[i]->metadata;
3413                 break;
3414             } else if (ret < 0)
3415                 exit_program(1);
3416         }
3417         if (!meta_in) {
3418             av_log(NULL, AV_LOG_FATAL, "Stream specifier %s does not match  any streams.\n", istream_spec);
3419             exit_program(1);
3420         }
3421     }
3422
3423     if (type_out == 's') {
3424         for (i = 0; i < oc->nb_streams; i++) {
3425             if ((ret = check_stream_specifier(oc, oc->streams[i], ostream_spec)) > 0) {
3426                 meta_out = &oc->streams[i]->metadata;
3427                 av_dict_copy(meta_out, *meta_in, AV_DICT_DONT_OVERWRITE);
3428             } else if (ret < 0)
3429                 exit_program(1);
3430         }
3431     } else
3432         av_dict_copy(meta_out, *meta_in, AV_DICT_DONT_OVERWRITE);
3433
3434     return 0;
3435 }
3436
3437 static int opt_recording_timestamp(OptionsContext *o, const char *opt, const char *arg)
3438 {
3439     char buf[128];
3440     int64_t recording_timestamp = parse_time_or_die(opt, arg, 0) / 1E6;
3441     struct tm time = *gmtime((time_t*)&recording_timestamp);
3442     strftime(buf, sizeof(buf), "creation_time=%FT%T%z", &time);
3443     parse_option(o, "metadata", buf, options);
3444
3445     av_log(NULL, AV_LOG_WARNING, "%s is deprecated, set the 'creation_time' metadata "
3446                                  "tag instead.\n", opt);
3447     return 0;
3448 }
3449
3450 static AVCodec *find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
3451 {
3452     const char *codec_string = encoder ? "encoder" : "decoder";
3453     AVCodec *codec;
3454
3455     codec = encoder ?
3456         avcodec_find_encoder_by_name(name) :
3457         avcodec_find_decoder_by_name(name);
3458     if (!codec) {
3459         av_log(NULL, AV_LOG_FATAL, "Unknown %s '%s'\n", codec_string, name);
3460         exit_program(1);
3461     }
3462     if (codec->type != type) {
3463         av_log(NULL, AV_LOG_FATAL, "Invalid %s type '%s'\n", codec_string, name);
3464         exit_program(1);
3465     }
3466     return codec;
3467 }
3468
3469 static AVCodec *choose_decoder(OptionsContext *o, AVFormatContext *s, AVStream *st)
3470 {
3471     char *codec_name = NULL;
3472
3473     MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, st);
3474     if (codec_name) {
3475         AVCodec *codec = find_codec_or_die(codec_name, st->codec->codec_type, 0);
3476         st->codec->codec_id = codec->id;
3477         return codec;
3478     } else
3479         return avcodec_find_decoder(st->codec->codec_id);
3480 }
3481
3482 /**
3483  * Add all the streams from the given input file to the global
3484  * list of input streams.
3485  */
3486 static void add_input_streams(OptionsContext *o, AVFormatContext *ic)
3487 {
3488     int i;
3489     char *next, *codec_tag = NULL;
3490
3491     for (i = 0; i < ic->nb_streams; i++) {
3492         AVStream *st = ic->streams[i];
3493         AVCodecContext *dec = st->codec;
3494         InputStream *ist;
3495
3496         input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
3497         ist = &input_streams[nb_input_streams - 1];
3498         ist->st = st;
3499         ist->file_index = nb_input_files;
3500         ist->discard = 1;
3501         ist->opts = filter_codec_opts(codec_opts, choose_decoder(o, ic, st), ic, st);
3502
3503         ist->ts_scale = 1.0;
3504         MATCH_PER_STREAM_OPT(ts_scale, dbl, ist->ts_scale, ic, st);
3505
3506         MATCH_PER_STREAM_OPT(codec_tags, str, codec_tag, ic, st);
3507         if (codec_tag) {
3508             uint32_t tag = strtol(codec_tag, &next, 0);
3509             if (*next)
3510                 tag = AV_RL32(codec_tag);
3511             st->codec->codec_tag = tag;
3512         }
3513
3514         ist->dec = choose_decoder(o, ic, st);
3515
3516         switch (dec->codec_type) {
3517         case AVMEDIA_TYPE_AUDIO:
3518             if (!ist->dec)
3519                 ist->dec = avcodec_find_decoder(dec->codec_id);
3520             if (o->audio_disable)
3521                 st->discard = AVDISCARD_ALL;
3522             break;
3523         case AVMEDIA_TYPE_VIDEO:
3524             if(!ist->dec)
3525                 ist->dec = avcodec_find_decoder(dec->codec_id);
3526             if (dec->lowres) {
3527                 dec->flags |= CODEC_FLAG_EMU_EDGE;
3528             }
3529
3530             if (o->video_disable)
3531                 st->discard = AVDISCARD_ALL;
3532             else if (video_discard)
3533                 st->discard = video_discard;
3534             break;
3535         case AVMEDIA_TYPE_DATA:
3536             if (o->data_disable)
3537                 st->discard= AVDISCARD_ALL;
3538             break;
3539         case AVMEDIA_TYPE_SUBTITLE:
3540             if(!ist->dec)
3541                 ist->dec = avcodec_find_decoder(dec->codec_id);
3542             if(o->subtitle_disable)
3543                 st->discard = AVDISCARD_ALL;
3544             break;
3545         case AVMEDIA_TYPE_ATTACHMENT:
3546         case AVMEDIA_TYPE_UNKNOWN:
3547             break;
3548         default:
3549             abort();
3550         }
3551     }
3552 }
3553
3554 static void assert_file_overwrite(const char *filename)
3555 {
3556     if ((!file_overwrite || no_file_overwrite) &&
3557         (strchr(filename, ':') == NULL || filename[1] == ':' ||
3558          av_strstart(filename, "file:", NULL))) {
3559         if (avio_check(filename, 0) == 0) {
3560             if (!using_stdin && (!no_file_overwrite || file_overwrite)) {
3561                 fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
3562                 fflush(stderr);
3563                 term_exit();
3564                 signal(SIGINT, SIG_DFL);
3565                 if (!read_yesno()) {
3566                     av_log(0, AV_LOG_FATAL, "Not overwriting - exiting\n");
3567                     exit_program(1);
3568                 }
3569                 term_init();
3570             }
3571             else {
3572                 av_log(0, AV_LOG_FATAL, "File '%s' already exists. Exiting.\n", filename);
3573                 exit_program(1);
3574             }
3575         }
3576     }
3577 }
3578
3579 static void dump_attachment(AVStream *st, const char *filename)
3580 {
3581     int ret;
3582     AVIOContext *out = NULL;
3583     AVDictionaryEntry *e;
3584
3585     if (!st->codec->extradata_size) {
3586         av_log(NULL, AV_LOG_WARNING, "No extradata to dump in stream #%d:%d.\n",
3587                nb_input_files - 1, st->index);
3588         return;
3589     }
3590     if (!*filename && (e = av_dict_get(st->metadata, "filename", NULL, 0)))
3591         filename = e->value;
3592     if (!*filename) {
3593         av_log(NULL, AV_LOG_FATAL, "No filename specified and no 'filename' tag"
3594                "in stream #%d:%d.\n", nb_input_files - 1, st->index);
3595         exit_program(1);
3596     }
3597
3598     assert_file_overwrite(filename);
3599
3600     if ((ret = avio_open2(&out, filename, AVIO_FLAG_WRITE, &int_cb, NULL)) < 0) {
3601         av_log(NULL, AV_LOG_FATAL, "Could not open file %s for writing.\n",
3602                filename);
3603         exit_program(1);
3604     }
3605
3606     avio_write(out, st->codec->extradata, st->codec->extradata_size);
3607     avio_flush(out);
3608     avio_close(out);
3609 }
3610
3611 static int opt_input_file(OptionsContext *o, const char *opt, const char *filename)
3612 {
3613     AVFormatContext *ic;
3614     AVInputFormat *file_iformat = NULL;
3615     int err, i, ret;
3616     int64_t timestamp;
3617     uint8_t buf[128];
3618     AVDictionary **opts;
3619     int orig_nb_streams;                     // number of streams before avformat_find_stream_info
3620
3621     if (o->format) {
3622         if (!(file_iformat = av_find_input_format(o->format))) {
3623             av_log(NULL, AV_LOG_FATAL, "Unknown input format: '%s'\n", o->format);
3624             exit_program(1);
3625         }
3626     }
3627
3628     if (!strcmp(filename, "-"))
3629         filename = "pipe:";
3630
3631     using_stdin |= !strncmp(filename, "pipe:", 5) ||
3632                     !strcmp(filename, "/dev/stdin");
3633
3634     /* get default parameters from command line */
3635     ic = avformat_alloc_context();
3636     if (!ic) {
3637         print_error(filename, AVERROR(ENOMEM));
3638         exit_program(1);
3639     }
3640     if (o->nb_audio_sample_rate) {
3641         snprintf(buf, sizeof(buf), "%d", o->audio_sample_rate[o->nb_audio_sample_rate - 1].u.i);
3642         av_dict_set(&format_opts, "sample_rate", buf, 0);
3643     }
3644     if (o->nb_audio_channels) {
3645         snprintf(buf, sizeof(buf), "%d", o->audio_channels[o->nb_audio_channels - 1].u.i);
3646         av_dict_set(&format_opts, "channels", buf, 0);
3647     }
3648     if (o->nb_frame_rates) {
3649         av_dict_set(&format_opts, "framerate", o->frame_rates[o->nb_frame_rates - 1].u.str, 0);
3650     }
3651     if (o->nb_frame_sizes) {
3652         av_dict_set(&format_opts, "video_size", o->frame_sizes[o->nb_frame_sizes - 1].u.str, 0);
3653     }
3654     if (o->nb_frame_pix_fmts)
3655         av_dict_set(&format_opts, "pixel_format", o->frame_pix_fmts[o->nb_frame_pix_fmts - 1].u.str, 0);
3656
3657     ic->video_codec_id   = video_codec_name ?
3658         find_codec_or_die(video_codec_name   , AVMEDIA_TYPE_VIDEO   , 0)->id : CODEC_ID_NONE;
3659     ic->audio_codec_id   = audio_codec_name ?