avconv: in output_packet() don't set decoded_data_size for video.
[ffmpeg.git] / avconv.c
1 /*
2  * avconv main
3  * Copyright (c) 2000-2011 The libav developers.
4  *
5  * This file is part of Libav.
6  *
7  * Libav is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * Libav is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with Libav; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21
22 #include "config.h"
23 #include <ctype.h>
24 #include <string.h>
25 #include <math.h>
26 #include <stdlib.h>
27 #include <errno.h>
28 #include <signal.h>
29 #include <limits.h>
30 #include <unistd.h>
31 #include "libavformat/avformat.h"
32 #include "libavdevice/avdevice.h"
33 #include "libswscale/swscale.h"
34 #include "libavutil/opt.h"
35 #include "libavcodec/audioconvert.h"
36 #include "libavutil/audioconvert.h"
37 #include "libavutil/parseutils.h"
38 #include "libavutil/samplefmt.h"
39 #include "libavutil/colorspace.h"
40 #include "libavutil/fifo.h"
41 #include "libavutil/intreadwrite.h"
42 #include "libavutil/dict.h"
43 #include "libavutil/mathematics.h"
44 #include "libavutil/pixdesc.h"
45 #include "libavutil/avstring.h"
46 #include "libavutil/libm.h"
47 #include "libavformat/os_support.h"
48
49 #if CONFIG_AVFILTER
50 # include "libavfilter/avfilter.h"
51 # include "libavfilter/avfiltergraph.h"
52 # include "libavfilter/vsrc_buffer.h"
53 #endif
54
55 #if HAVE_SYS_RESOURCE_H
56 #include <sys/types.h>
57 #include <sys/time.h>
58 #include <sys/resource.h>
59 #elif HAVE_GETPROCESSTIMES
60 #include <windows.h>
61 #endif
62 #if HAVE_GETPROCESSMEMORYINFO
63 #include <windows.h>
64 #include <psapi.h>
65 #endif
66
67 #if HAVE_SYS_SELECT_H
68 #include <sys/select.h>
69 #endif
70
71 #include <time.h>
72
73 #include "cmdutils.h"
74
75 #include "libavutil/avassert.h"
76
77 const char program_name[] = "avconv";
78 const int program_birth_year = 2000;
79
80 /* select an input stream for an output stream */
81 typedef struct StreamMap {
82     int disabled;           /** 1 is this mapping is disabled by a negative map */
83     int file_index;
84     int stream_index;
85     int sync_file_index;
86     int sync_stream_index;
87 } StreamMap;
88
89 /**
90  * select an input file for an output file
91  */
92 typedef struct MetadataMap {
93     int  file;      ///< file index
94     char type;      ///< type of metadata to copy -- (g)lobal, (s)tream, (c)hapter or (p)rogram
95     int  index;     ///< stream/chapter/program number
96 } MetadataMap;
97
98 static const OptionDef options[];
99
100 static int video_discard = 0;
101 static int same_quant = 0;
102 static int do_deinterlace = 0;
103 static int intra_dc_precision = 8;
104 static int qp_hist = 0;
105
106 static int file_overwrite = 0;
107 static int do_benchmark = 0;
108 static int do_hex_dump = 0;
109 static int do_pkt_dump = 0;
110 static int do_pass = 0;
111 static char *pass_logfilename_prefix = NULL;
112 static int video_sync_method= -1;
113 static int audio_sync_method= 0;
114 static float audio_drift_threshold= 0.1;
115 static int copy_ts= 0;
116 static int copy_tb;
117 static int opt_shortest = 0;
118 static char *vstats_filename;
119 static FILE *vstats_file;
120 static int copy_initial_nonkeyframes = 0;
121
122 static int audio_volume = 256;
123
124 static int exit_on_error = 0;
125 static int using_stdin = 0;
126 static int64_t video_size = 0;
127 static int64_t audio_size = 0;
128 static int64_t extra_size = 0;
129 static int nb_frames_dup = 0;
130 static int nb_frames_drop = 0;
131 static int input_sync;
132
133 static float dts_delta_threshold = 10;
134
135 static uint8_t *audio_buf;
136 static uint8_t *audio_out;
137 static unsigned int allocated_audio_out_size, allocated_audio_buf_size;
138
139 static void *samples;
140
141 #define DEFAULT_PASS_LOGFILENAME_PREFIX "av2pass"
142
143 typedef struct InputStream {
144     int file_index;
145     AVStream *st;
146     int discard;             /* true if stream data should be discarded */
147     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
148     AVCodec *dec;
149
150     int64_t       start;     /* time when read started */
151     int64_t       next_pts;  /* synthetic pts for cases where pkt.pts
152                                 is not defined */
153     int64_t       pts;       /* current pts */
154     PtsCorrectionContext pts_ctx;
155     double ts_scale;
156     int is_start;            /* is 1 at the start and after a discontinuity */
157     int showed_multi_packet_warning;
158     AVDictionary *opts;
159 } InputStream;
160
161 typedef struct InputFile {
162     AVFormatContext *ctx;
163     int eof_reached;      /* true if eof reached */
164     int ist_index;        /* index of first stream in ist_table */
165     int buffer_size;      /* current total buffer size */
166     int64_t ts_offset;
167     int nb_streams;       /* number of stream that avconv is aware of; may be different
168                              from ctx.nb_streams if new streams appear during av_read_frame() */
169     int rate_emu;
170 } InputFile;
171
172 typedef struct OutputStream {
173     int file_index;          /* file index */
174     int index;               /* stream index in the output file */
175     int source_index;        /* InputStream index */
176     AVStream *st;            /* stream in the output file */
177     int encoding_needed;     /* true if encoding needed for this stream */
178     int frame_number;
179     /* input pts and corresponding output pts
180        for A/V sync */
181     //double sync_ipts;        /* dts from the AVPacket of the demuxer in second units */
182     struct InputStream *sync_ist; /* input stream to sync against */
183     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ //FIXME look at frame_number
184     AVBitStreamFilterContext *bitstream_filters;
185     AVCodec *enc;
186     int64_t max_frames;
187
188     /* video only */
189     int video_resample;
190     AVFrame pict_tmp;      /* temporary image for resampling */
191     struct SwsContext *img_resample_ctx; /* for image resampling */
192     int resample_height;
193     int resample_width;
194     int resample_pix_fmt;
195     AVRational frame_rate;
196     int force_fps;
197     int top_field_first;
198
199     float frame_aspect_ratio;
200
201     /* forced key frames */
202     int64_t *forced_kf_pts;
203     int forced_kf_count;
204     int forced_kf_index;
205
206     /* audio only */
207     int audio_resample;
208     ReSampleContext *resample; /* for audio resampling */
209     int resample_sample_fmt;
210     int resample_channels;
211     int resample_sample_rate;
212     int reformat_pair;
213     AVAudioConvert *reformat_ctx;
214     AVFifoBuffer *fifo;     /* for compression: one audio fifo per codec */
215     FILE *logfile;
216
217 #if CONFIG_AVFILTER
218     AVFilterContext *output_video_filter;
219     AVFilterContext *input_video_filter;
220     AVFilterBufferRef *picref;
221     char *avfilter;
222     AVFilterGraph *graph;
223 #endif
224
225    int sws_flags;
226    AVDictionary *opts;
227    int is_past_recording_time;
228 } OutputStream;
229
230
231 typedef struct OutputFile {
232     AVFormatContext *ctx;
233     AVDictionary *opts;
234     int ost_index;       /* index of the first stream in output_streams */
235     int64_t recording_time; /* desired length of the resulting file in microseconds */
236     int64_t start_time;     /* start time in microseconds */
237     uint64_t limit_filesize;
238 } OutputFile;
239
240 static InputStream *input_streams = NULL;
241 static int         nb_input_streams = 0;
242 static InputFile   *input_files   = NULL;
243 static int         nb_input_files   = 0;
244
245 static OutputStream *output_streams = NULL;
246 static int        nb_output_streams = 0;
247 static OutputFile   *output_files   = NULL;
248 static int        nb_output_files   = 0;
249
250 typedef struct OptionsContext {
251     /* input/output options */
252     int64_t start_time;
253     const char *format;
254
255     SpecifierOpt *codec_names;
256     int        nb_codec_names;
257     SpecifierOpt *audio_channels;
258     int        nb_audio_channels;
259     SpecifierOpt *audio_sample_rate;
260     int        nb_audio_sample_rate;
261     SpecifierOpt *frame_rates;
262     int        nb_frame_rates;
263     SpecifierOpt *frame_sizes;
264     int        nb_frame_sizes;
265     SpecifierOpt *frame_pix_fmts;
266     int        nb_frame_pix_fmts;
267
268     /* input options */
269     int64_t input_ts_offset;
270     int rate_emu;
271
272     SpecifierOpt *ts_scale;
273     int        nb_ts_scale;
274
275     /* output options */
276     StreamMap *stream_maps;
277     int     nb_stream_maps;
278     /* first item specifies output metadata, second is input */
279     MetadataMap (*meta_data_maps)[2];
280     int nb_meta_data_maps;
281     int metadata_global_manual;
282     int metadata_streams_manual;
283     int metadata_chapters_manual;
284
285     int chapters_input_file;
286
287     int64_t recording_time;
288     uint64_t limit_filesize;
289     float mux_preload;
290     float mux_max_delay;
291
292     int video_disable;
293     int audio_disable;
294     int subtitle_disable;
295     int data_disable;
296
297     /* indexed by output file stream index */
298     int   *streamid_map;
299     int nb_streamid_map;
300
301     SpecifierOpt *metadata;
302     int        nb_metadata;
303     SpecifierOpt *max_frames;
304     int        nb_max_frames;
305     SpecifierOpt *bitstream_filters;
306     int        nb_bitstream_filters;
307     SpecifierOpt *codec_tags;
308     int        nb_codec_tags;
309     SpecifierOpt *sample_fmts;
310     int        nb_sample_fmts;
311     SpecifierOpt *qscale;
312     int        nb_qscale;
313     SpecifierOpt *forced_key_frames;
314     int        nb_forced_key_frames;
315     SpecifierOpt *force_fps;
316     int        nb_force_fps;
317     SpecifierOpt *frame_aspect_ratios;
318     int        nb_frame_aspect_ratios;
319     SpecifierOpt *rc_overrides;
320     int        nb_rc_overrides;
321     SpecifierOpt *intra_matrices;
322     int        nb_intra_matrices;
323     SpecifierOpt *inter_matrices;
324     int        nb_inter_matrices;
325     SpecifierOpt *top_field_first;
326     int        nb_top_field_first;
327 #if CONFIG_AVFILTER
328     SpecifierOpt *filters;
329     int        nb_filters;
330 #endif
331 } OptionsContext;
332
333 #define MATCH_PER_STREAM_OPT(name, type, outvar, fmtctx, st)\
334 {\
335     int i, ret;\
336     for (i = 0; i < o->nb_ ## name; i++) {\
337         char *spec = o->name[i].specifier;\
338         if ((ret = check_stream_specifier(fmtctx, st, spec)) > 0)\
339             outvar = o->name[i].u.type;\
340         else if (ret < 0)\
341             exit_program(1);\
342     }\
343 }
344
345 static void reset_options(OptionsContext *o)
346 {
347     const OptionDef *po = options;
348
349     /* all OPT_SPEC and OPT_STRING can be freed in generic way */
350     while (po->name) {
351         void *dst = (uint8_t*)o + po->u.off;
352
353         if (po->flags & OPT_SPEC) {
354             SpecifierOpt **so = dst;
355             int i, *count = (int*)(so + 1);
356             for (i = 0; i < *count; i++) {
357                 av_freep(&(*so)[i].specifier);
358                 if (po->flags & OPT_STRING)
359                     av_freep(&(*so)[i].u.str);
360             }
361             av_freep(so);
362             *count = 0;
363         } else if (po->flags & OPT_OFFSET && po->flags & OPT_STRING)
364             av_freep(dst);
365         po++;
366     }
367
368     av_freep(&o->stream_maps);
369     av_freep(&o->meta_data_maps);
370     av_freep(&o->streamid_map);
371
372     memset(o, 0, sizeof(*o));
373
374     o->mux_preload    = 0.5;
375     o->mux_max_delay  = 0.7;
376     o->recording_time = INT64_MAX;
377     o->limit_filesize = UINT64_MAX;
378     o->chapters_input_file = INT_MAX;
379
380     uninit_opts();
381     init_opts();
382 }
383
384 #if CONFIG_AVFILTER
385
386 static int configure_video_filters(InputStream *ist, OutputStream *ost)
387 {
388     AVFilterContext *last_filter, *filter;
389     /** filter graph containing all filters including input & output */
390     AVCodecContext *codec = ost->st->codec;
391     AVCodecContext *icodec = ist->st->codec;
392     FFSinkContext ffsink_ctx = { .pix_fmt = codec->pix_fmt };
393     AVRational sample_aspect_ratio;
394     char args[255];
395     int ret;
396
397     ost->graph = avfilter_graph_alloc();
398
399     if (ist->st->sample_aspect_ratio.num){
400         sample_aspect_ratio = ist->st->sample_aspect_ratio;
401     }else
402         sample_aspect_ratio = ist->st->codec->sample_aspect_ratio;
403
404     snprintf(args, 255, "%d:%d:%d:%d:%d:%d:%d", ist->st->codec->width,
405              ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE,
406              sample_aspect_ratio.num, sample_aspect_ratio.den);
407
408     ret = avfilter_graph_create_filter(&ost->input_video_filter, avfilter_get_by_name("buffer"),
409                                        "src", args, NULL, ost->graph);
410     if (ret < 0)
411         return ret;
412     ret = avfilter_graph_create_filter(&ost->output_video_filter, &ffsink,
413                                        "out", NULL, &ffsink_ctx, ost->graph);
414     if (ret < 0)
415         return ret;
416     last_filter = ost->input_video_filter;
417
418     if (codec->width  != icodec->width || codec->height != icodec->height) {
419         snprintf(args, 255, "%d:%d:flags=0x%X",
420                  codec->width,
421                  codec->height,
422                  ost->sws_flags);
423         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
424                                                 NULL, args, NULL, ost->graph)) < 0)
425             return ret;
426         if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
427             return ret;
428         last_filter = filter;
429     }
430
431     snprintf(args, sizeof(args), "flags=0x%X", ost->sws_flags);
432     ost->graph->scale_sws_opts = av_strdup(args);
433
434     if (ost->avfilter) {
435         AVFilterInOut *outputs = av_malloc(sizeof(AVFilterInOut));
436         AVFilterInOut *inputs  = av_malloc(sizeof(AVFilterInOut));
437
438         outputs->name    = av_strdup("in");
439         outputs->filter_ctx = last_filter;
440         outputs->pad_idx = 0;
441         outputs->next    = NULL;
442
443         inputs->name    = av_strdup("out");
444         inputs->filter_ctx = ost->output_video_filter;
445         inputs->pad_idx = 0;
446         inputs->next    = NULL;
447
448         if ((ret = avfilter_graph_parse(ost->graph, ost->avfilter, inputs, outputs, NULL)) < 0)
449             return ret;
450         av_freep(&ost->avfilter);
451     } else {
452         if ((ret = avfilter_link(last_filter, 0, ost->output_video_filter, 0)) < 0)
453             return ret;
454     }
455
456     if ((ret = avfilter_graph_config(ost->graph, NULL)) < 0)
457         return ret;
458
459     codec->width  = ost->output_video_filter->inputs[0]->w;
460     codec->height = ost->output_video_filter->inputs[0]->h;
461     codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
462         ost->frame_aspect_ratio ? // overridden by the -aspect cli option
463         av_d2q(ost->frame_aspect_ratio*codec->height/codec->width, 255) :
464         ost->output_video_filter->inputs[0]->sample_aspect_ratio;
465
466     return 0;
467 }
468 #endif /* CONFIG_AVFILTER */
469
470 static void term_exit(void)
471 {
472     av_log(NULL, AV_LOG_QUIET, "");
473 }
474
475 static volatile int received_sigterm = 0;
476 static volatile int received_nb_signals = 0;
477
478 static void
479 sigterm_handler(int sig)
480 {
481     received_sigterm = sig;
482     received_nb_signals++;
483     term_exit();
484 }
485
486 static void term_init(void)
487 {
488     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).  */
489     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
490 #ifdef SIGXCPU
491     signal(SIGXCPU, sigterm_handler);
492 #endif
493 }
494
495 static int decode_interrupt_cb(void)
496 {
497     return received_nb_signals > 1;
498 }
499
500 void exit_program(int ret)
501 {
502     int i;
503
504     /* close files */
505     for(i=0;i<nb_output_files;i++) {
506         AVFormatContext *s = output_files[i].ctx;
507         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
508             avio_close(s->pb);
509         avformat_free_context(s);
510         av_dict_free(&output_files[i].opts);
511     }
512     for(i=0;i<nb_input_files;i++) {
513         av_close_input_file(input_files[i].ctx);
514     }
515     for (i = 0; i < nb_input_streams; i++)
516         av_dict_free(&input_streams[i].opts);
517
518     if (vstats_file)
519         fclose(vstats_file);
520     av_free(vstats_filename);
521
522     av_freep(&input_streams);
523     av_freep(&input_files);
524     av_freep(&output_streams);
525     av_freep(&output_files);
526
527     uninit_opts();
528     av_free(audio_buf);
529     av_free(audio_out);
530     allocated_audio_buf_size= allocated_audio_out_size= 0;
531     av_free(samples);
532
533 #if CONFIG_AVFILTER
534     avfilter_uninit();
535 #endif
536
537     if (received_sigterm) {
538         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
539                (int) received_sigterm);
540         exit (255);
541     }
542
543     exit(ret); /* not all OS-es handle main() return value */
544 }
545
546 static void assert_avoptions(AVDictionary *m)
547 {
548     AVDictionaryEntry *t;
549     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
550         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
551         exit_program(1);
552     }
553 }
554
555 static void assert_codec_experimental(AVCodecContext *c, int encoder)
556 {
557     const char *codec_string = encoder ? "encoder" : "decoder";
558     AVCodec *codec;
559     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
560         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
561         av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
562                 "results.\nAdd '-strict experimental' if you want to use it.\n",
563                 codec_string, c->codec->name);
564         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
565         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
566             av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
567                    codec_string, codec->name);
568         exit_program(1);
569     }
570 }
571
572 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
573 {
574     if(codec && codec->sample_fmts){
575         const enum AVSampleFormat *p= codec->sample_fmts;
576         for(; *p!=-1; p++){
577             if(*p == st->codec->sample_fmt)
578                 break;
579         }
580         if (*p == -1) {
581             av_log(NULL, AV_LOG_WARNING,
582                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
583                    av_get_sample_fmt_name(st->codec->sample_fmt),
584                    codec->name,
585                    av_get_sample_fmt_name(codec->sample_fmts[0]));
586             st->codec->sample_fmt = codec->sample_fmts[0];
587         }
588     }
589 }
590
591 /**
592  * Update the requested input sample format based on the output sample format.
593  * This is currently only used to request float output from decoders which
594  * support multiple sample formats, one of which is AV_SAMPLE_FMT_FLT.
595  * Ideally this will be removed in the future when decoders do not do format
596  * conversion and only output in their native format.
597  */
598 static void update_sample_fmt(AVCodecContext *dec, AVCodec *dec_codec,
599                               AVCodecContext *enc)
600 {
601     /* if sample formats match or a decoder sample format has already been
602        requested, just return */
603     if (enc->sample_fmt == dec->sample_fmt ||
604         dec->request_sample_fmt > AV_SAMPLE_FMT_NONE)
605         return;
606
607     /* if decoder supports more than one output format */
608     if (dec_codec && dec_codec->sample_fmts &&
609         dec_codec->sample_fmts[0] != AV_SAMPLE_FMT_NONE &&
610         dec_codec->sample_fmts[1] != AV_SAMPLE_FMT_NONE) {
611         const enum AVSampleFormat *p;
612         int min_dec = -1, min_inc = -1;
613
614         /* find a matching sample format in the encoder */
615         for (p = dec_codec->sample_fmts; *p != AV_SAMPLE_FMT_NONE; p++) {
616             if (*p == enc->sample_fmt) {
617                 dec->request_sample_fmt = *p;
618                 return;
619             } else if (*p > enc->sample_fmt) {
620                 min_inc = FFMIN(min_inc, *p - enc->sample_fmt);
621             } else
622                 min_dec = FFMIN(min_dec, enc->sample_fmt - *p);
623         }
624
625         /* if none match, provide the one that matches quality closest */
626         dec->request_sample_fmt = min_inc > 0 ? enc->sample_fmt + min_inc :
627                                   enc->sample_fmt - min_dec;
628     }
629 }
630
631 static void choose_sample_rate(AVStream *st, AVCodec *codec)
632 {
633     if(codec && codec->supported_samplerates){
634         const int *p= codec->supported_samplerates;
635         int best=0;
636         int best_dist=INT_MAX;
637         for(; *p; p++){
638             int dist= abs(st->codec->sample_rate - *p);
639             if(dist < best_dist){
640                 best_dist= dist;
641                 best= *p;
642             }
643         }
644         if(best_dist){
645             av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
646         }
647         st->codec->sample_rate= best;
648     }
649 }
650
651 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
652 {
653     if(codec && codec->pix_fmts){
654         const enum PixelFormat *p= codec->pix_fmts;
655         if(st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL){
656             if(st->codec->codec_id==CODEC_ID_MJPEG){
657                 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE};
658             }else if(st->codec->codec_id==CODEC_ID_LJPEG){
659                 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUVJ444P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_YUV444P, PIX_FMT_BGRA, PIX_FMT_NONE};
660             }
661         }
662         for(; *p!=-1; p++){
663             if(*p == st->codec->pix_fmt)
664                 break;
665         }
666         if (*p == -1) {
667             if(st->codec->pix_fmt != PIX_FMT_NONE)
668                 av_log(NULL, AV_LOG_WARNING,
669                         "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
670                         av_pix_fmt_descriptors[st->codec->pix_fmt].name,
671                         codec->name,
672                         av_pix_fmt_descriptors[codec->pix_fmts[0]].name);
673             st->codec->pix_fmt = codec->pix_fmts[0];
674         }
675     }
676 }
677
678 static double
679 get_sync_ipts(const OutputStream *ost)
680 {
681     const InputStream *ist = ost->sync_ist;
682     OutputFile *of = &output_files[ost->file_index];
683     return (double)(ist->pts - of->start_time)/AV_TIME_BASE;
684 }
685
686 static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc){
687     int ret;
688
689     while(bsfc){
690         AVPacket new_pkt= *pkt;
691         int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
692                                           &new_pkt.data, &new_pkt.size,
693                                           pkt->data, pkt->size,
694                                           pkt->flags & AV_PKT_FLAG_KEY);
695         if(a>0){
696             av_free_packet(pkt);
697             new_pkt.destruct= av_destruct_packet;
698         } else if(a<0){
699             av_log(NULL, AV_LOG_ERROR, "%s failed for stream %d, codec %s",
700                    bsfc->filter->name, pkt->stream_index,
701                    avctx->codec ? avctx->codec->name : "copy");
702             print_error("", a);
703             if (exit_on_error)
704                 exit_program(1);
705         }
706         *pkt= new_pkt;
707
708         bsfc= bsfc->next;
709     }
710
711     ret= av_interleaved_write_frame(s, pkt);
712     if(ret < 0){
713         print_error("av_interleaved_write_frame()", ret);
714         exit_program(1);
715     }
716 }
717
718 static void do_audio_out(AVFormatContext *s,
719                          OutputStream *ost,
720                          InputStream *ist,
721                          unsigned char *buf, int size)
722 {
723     uint8_t *buftmp;
724     int64_t audio_out_size, audio_buf_size;
725     int64_t allocated_for_size= size;
726
727     int size_out, frame_bytes, ret, resample_changed;
728     AVCodecContext *enc= ost->st->codec;
729     AVCodecContext *dec= ist->st->codec;
730     int osize = av_get_bytes_per_sample(enc->sample_fmt);
731     int isize = av_get_bytes_per_sample(dec->sample_fmt);
732     const int coded_bps = av_get_bits_per_sample(enc->codec->id);
733
734 need_realloc:
735     audio_buf_size= (allocated_for_size + isize*dec->channels - 1) / (isize*dec->channels);
736     audio_buf_size= (audio_buf_size*enc->sample_rate + dec->sample_rate) / dec->sample_rate;
737     audio_buf_size= audio_buf_size*2 + 10000; //safety factors for the deprecated resampling API
738     audio_buf_size= FFMAX(audio_buf_size, enc->frame_size);
739     audio_buf_size*= osize*enc->channels;
740
741     audio_out_size= FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
742     if(coded_bps > 8*osize)
743         audio_out_size= audio_out_size * coded_bps / (8*osize);
744     audio_out_size += FF_MIN_BUFFER_SIZE;
745
746     if(audio_out_size > INT_MAX || audio_buf_size > INT_MAX){
747         av_log(NULL, AV_LOG_FATAL, "Buffer sizes too large\n");
748         exit_program(1);
749     }
750
751     av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
752     av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
753     if (!audio_buf || !audio_out){
754         av_log(NULL, AV_LOG_FATAL, "Out of memory in do_audio_out\n");
755         exit_program(1);
756     }
757
758     if (enc->channels != dec->channels || enc->sample_rate != dec->sample_rate)
759         ost->audio_resample = 1;
760
761     resample_changed = ost->resample_sample_fmt  != dec->sample_fmt ||
762                        ost->resample_channels    != dec->channels   ||
763                        ost->resample_sample_rate != dec->sample_rate;
764
765     if ((ost->audio_resample && !ost->resample) || resample_changed) {
766         if (resample_changed) {
767             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",
768                    ist->file_index, ist->st->index,
769                    ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
770                    dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
771             ost->resample_sample_fmt  = dec->sample_fmt;
772             ost->resample_channels    = dec->channels;
773             ost->resample_sample_rate = dec->sample_rate;
774             if (ost->resample)
775                 audio_resample_close(ost->resample);
776         }
777         /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
778         if (audio_sync_method <= 1 &&
779             ost->resample_sample_fmt  == enc->sample_fmt &&
780             ost->resample_channels    == enc->channels   &&
781             ost->resample_sample_rate == enc->sample_rate) {
782             ost->resample = NULL;
783             ost->audio_resample = 0;
784         } else if (ost->audio_resample) {
785             if (dec->sample_fmt != AV_SAMPLE_FMT_S16)
786                 av_log(NULL, AV_LOG_WARNING, "Using s16 intermediate sample format for resampling\n");
787             ost->resample = av_audio_resample_init(enc->channels,    dec->channels,
788                                                    enc->sample_rate, dec->sample_rate,
789                                                    enc->sample_fmt,  dec->sample_fmt,
790                                                    16, 10, 0, 0.8);
791             if (!ost->resample) {
792                 av_log(NULL, AV_LOG_FATAL, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
793                        dec->channels, dec->sample_rate,
794                        enc->channels, enc->sample_rate);
795                 exit_program(1);
796             }
797         }
798     }
799
800 #define MAKE_SFMT_PAIR(a,b) ((a)+AV_SAMPLE_FMT_NB*(b))
801     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt &&
802         MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt)!=ost->reformat_pair) {
803         if (ost->reformat_ctx)
804             av_audio_convert_free(ost->reformat_ctx);
805         ost->reformat_ctx = av_audio_convert_alloc(enc->sample_fmt, 1,
806                                                    dec->sample_fmt, 1, NULL, 0);
807         if (!ost->reformat_ctx) {
808             av_log(NULL, AV_LOG_FATAL, "Cannot convert %s sample format to %s sample format\n",
809                    av_get_sample_fmt_name(dec->sample_fmt),
810                    av_get_sample_fmt_name(enc->sample_fmt));
811             exit_program(1);
812         }
813         ost->reformat_pair=MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt);
814     }
815
816     if(audio_sync_method){
817         double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
818                 - av_fifo_size(ost->fifo)/(enc->channels * 2);
819         double idelta= delta*dec->sample_rate / enc->sample_rate;
820         int byte_delta= ((int)idelta)*2*dec->channels;
821
822         //FIXME resample delay
823         if(fabs(delta) > 50){
824             if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
825                 if(byte_delta < 0){
826                     byte_delta= FFMAX(byte_delta, -size);
827                     size += byte_delta;
828                     buf  -= byte_delta;
829                     av_log(NULL, AV_LOG_VERBOSE, "discarding %d audio samples\n", (int)-delta);
830                     if(!size)
831                         return;
832                     ist->is_start=0;
833                 }else{
834                     static uint8_t *input_tmp= NULL;
835                     input_tmp= av_realloc(input_tmp, byte_delta + size);
836
837                     if(byte_delta > allocated_for_size - size){
838                         allocated_for_size= byte_delta + (int64_t)size;
839                         goto need_realloc;
840                     }
841                     ist->is_start=0;
842
843                     memset(input_tmp, 0, byte_delta);
844                     memcpy(input_tmp + byte_delta, buf, size);
845                     buf= input_tmp;
846                     size += byte_delta;
847                     av_log(NULL, AV_LOG_VERBOSE, "adding %d audio samples of silence\n", (int)delta);
848                 }
849             }else if(audio_sync_method>1){
850                 int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
851                 av_assert0(ost->audio_resample);
852                 av_log(NULL, AV_LOG_VERBOSE, "compensating audio timestamp drift:%f compensation:%d in:%d\n",
853                        delta, comp, enc->sample_rate);
854 //                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));
855                 av_resample_compensate(*(struct AVResampleContext**)ost->resample, comp, enc->sample_rate);
856             }
857         }
858     }else
859         ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
860                         - av_fifo_size(ost->fifo)/(enc->channels * 2); //FIXME wrong
861
862     if (ost->audio_resample) {
863         buftmp = audio_buf;
864         size_out = audio_resample(ost->resample,
865                                   (short *)buftmp, (short *)buf,
866                                   size / (dec->channels * isize));
867         size_out = size_out * enc->channels * osize;
868     } else {
869         buftmp = buf;
870         size_out = size;
871     }
872
873     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt) {
874         const void *ibuf[6]= {buftmp};
875         void *obuf[6]= {audio_buf};
876         int istride[6]= {isize};
877         int ostride[6]= {osize};
878         int len= size_out/istride[0];
879         if (av_audio_convert(ost->reformat_ctx, obuf, ostride, ibuf, istride, len)<0) {
880             printf("av_audio_convert() failed\n");
881             if (exit_on_error)
882                 exit_program(1);
883             return;
884         }
885         buftmp = audio_buf;
886         size_out = len*osize;
887     }
888
889     /* now encode as many frames as possible */
890     if (enc->frame_size > 1) {
891         /* output resampled raw samples */
892         if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
893             av_log(NULL, AV_LOG_FATAL, "av_fifo_realloc2() failed\n");
894             exit_program(1);
895         }
896         av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
897
898         frame_bytes = enc->frame_size * osize * enc->channels;
899
900         while (av_fifo_size(ost->fifo) >= frame_bytes) {
901             AVPacket pkt;
902             av_init_packet(&pkt);
903
904             av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
905
906             //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
907
908             ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
909                                        (short *)audio_buf);
910             if (ret < 0) {
911                 av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
912                 exit_program(1);
913             }
914             audio_size += ret;
915             pkt.stream_index= ost->index;
916             pkt.data= audio_out;
917             pkt.size= ret;
918             if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
919                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
920             pkt.flags |= AV_PKT_FLAG_KEY;
921             write_frame(s, &pkt, enc, ost->bitstream_filters);
922
923             ost->sync_opts += enc->frame_size;
924         }
925     } else {
926         AVPacket pkt;
927         av_init_packet(&pkt);
928
929         ost->sync_opts += size_out / (osize * enc->channels);
930
931         /* output a pcm frame */
932         /* determine the size of the coded buffer */
933         size_out /= osize;
934         if (coded_bps)
935             size_out = size_out*coded_bps/8;
936
937         if(size_out > audio_out_size){
938             av_log(NULL, AV_LOG_FATAL, "Internal error, buffer size too small\n");
939             exit_program(1);
940         }
941
942         //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
943         ret = avcodec_encode_audio(enc, audio_out, size_out,
944                                    (short *)buftmp);
945         if (ret < 0) {
946             av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
947             exit_program(1);
948         }
949         audio_size += ret;
950         pkt.stream_index= ost->index;
951         pkt.data= audio_out;
952         pkt.size= ret;
953         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
954             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
955         pkt.flags |= AV_PKT_FLAG_KEY;
956         write_frame(s, &pkt, enc, ost->bitstream_filters);
957     }
958 }
959
960 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
961 {
962     AVCodecContext *dec;
963     AVPicture *picture2;
964     AVPicture picture_tmp;
965     uint8_t *buf = 0;
966
967     dec = ist->st->codec;
968
969     /* deinterlace : must be done before any resize */
970     if (do_deinterlace) {
971         int size;
972
973         /* create temporary picture */
974         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
975         buf = av_malloc(size);
976         if (!buf)
977             return;
978
979         picture2 = &picture_tmp;
980         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
981
982         if(avpicture_deinterlace(picture2, picture,
983                                  dec->pix_fmt, dec->width, dec->height) < 0) {
984             /* if error, do not deinterlace */
985             av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
986             av_free(buf);
987             buf = NULL;
988             picture2 = picture;
989         }
990     } else {
991         picture2 = picture;
992     }
993
994     if (picture != picture2)
995         *picture = *picture2;
996     *bufp = buf;
997 }
998
999 static void do_subtitle_out(AVFormatContext *s,
1000                             OutputStream *ost,
1001                             InputStream *ist,
1002                             AVSubtitle *sub,
1003                             int64_t pts)
1004 {
1005     static uint8_t *subtitle_out = NULL;
1006     int subtitle_out_max_size = 1024 * 1024;
1007     int subtitle_out_size, nb, i;
1008     AVCodecContext *enc;
1009     AVPacket pkt;
1010
1011     if (pts == AV_NOPTS_VALUE) {
1012         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
1013         if (exit_on_error)
1014             exit_program(1);
1015         return;
1016     }
1017
1018     enc = ost->st->codec;
1019
1020     if (!subtitle_out) {
1021         subtitle_out = av_malloc(subtitle_out_max_size);
1022     }
1023
1024     /* Note: DVB subtitle need one packet to draw them and one other
1025        packet to clear them */
1026     /* XXX: signal it in the codec context ? */
1027     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1028         nb = 2;
1029     else
1030         nb = 1;
1031
1032     for(i = 0; i < nb; i++) {
1033         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1034         // start_display_time is required to be 0
1035         sub->pts              += av_rescale_q(sub->start_display_time, (AVRational){1, 1000}, AV_TIME_BASE_Q);
1036         sub->end_display_time -= sub->start_display_time;
1037         sub->start_display_time = 0;
1038         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1039                                                     subtitle_out_max_size, sub);
1040         if (subtitle_out_size < 0) {
1041             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
1042             exit_program(1);
1043         }
1044
1045         av_init_packet(&pkt);
1046         pkt.stream_index = ost->index;
1047         pkt.data = subtitle_out;
1048         pkt.size = subtitle_out_size;
1049         pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1050         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1051             /* XXX: the pts correction is handled here. Maybe handling
1052                it in the codec would be better */
1053             if (i == 0)
1054                 pkt.pts += 90 * sub->start_display_time;
1055             else
1056                 pkt.pts += 90 * sub->end_display_time;
1057         }
1058         write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1059     }
1060 }
1061
1062 static int bit_buffer_size= 1024*256;
1063 static uint8_t *bit_buffer= NULL;
1064
1065 static void do_video_resample(OutputStream *ost,
1066                               InputStream *ist,
1067                               AVFrame *in_picture,
1068                               AVFrame **out_picture)
1069 {
1070     int resample_changed = 0;
1071     AVCodecContext *dec = ist->st->codec;
1072     *out_picture = in_picture;
1073
1074     resample_changed = ost->resample_width   != dec->width  ||
1075                        ost->resample_height  != dec->height ||
1076                        ost->resample_pix_fmt != dec->pix_fmt;
1077
1078     if (resample_changed) {
1079         av_log(NULL, AV_LOG_INFO,
1080                "Input stream #%d.%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1081                ist->file_index, ist->st->index,
1082                ost->resample_width, ost->resample_height, av_get_pix_fmt_name(ost->resample_pix_fmt),
1083                dec->width         , dec->height         , av_get_pix_fmt_name(dec->pix_fmt));
1084         if(!ost->video_resample)
1085             ost->video_resample = 1;
1086     }
1087
1088 #if !CONFIG_AVFILTER
1089     if (ost->video_resample) {
1090         *out_picture = &ost->pict_tmp;
1091         if (resample_changed) {
1092             /* initialize a new scaler context */
1093             sws_freeContext(ost->img_resample_ctx);
1094             ost->img_resample_ctx = sws_getContext(
1095                 ist->st->codec->width,
1096                 ist->st->codec->height,
1097                 ist->st->codec->pix_fmt,
1098                 ost->st->codec->width,
1099                 ost->st->codec->height,
1100                 ost->st->codec->pix_fmt,
1101                 ost->sws_flags, NULL, NULL, NULL);
1102             if (ost->img_resample_ctx == NULL) {
1103                 av_log(NULL, AV_LOG_FATAL, "Cannot get resampling context\n");
1104                 exit_program(1);
1105             }
1106         }
1107         sws_scale(ost->img_resample_ctx, in_picture->data, in_picture->linesize,
1108               0, ost->resample_height, (*out_picture)->data, (*out_picture)->linesize);
1109     }
1110 #else
1111     if (resample_changed) {
1112         avfilter_graph_free(&ost->graph);
1113         if (configure_video_filters(ist, ost)) {
1114             av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1115             exit_program(1);
1116         }
1117     }
1118 #endif
1119     if (resample_changed) {
1120         ost->resample_width   = dec->width;
1121         ost->resample_height  = dec->height;
1122         ost->resample_pix_fmt = dec->pix_fmt;
1123     }
1124 }
1125
1126
1127 static void do_video_out(AVFormatContext *s,
1128                          OutputStream *ost,
1129                          InputStream *ist,
1130                          AVFrame *in_picture,
1131                          int *frame_size, float quality)
1132 {
1133     int nb_frames, i, ret, format_video_sync;
1134     AVFrame *final_picture;
1135     AVCodecContext *enc;
1136     double sync_ipts;
1137
1138     enc = ost->st->codec;
1139
1140     sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1141
1142     /* by default, we output a single frame */
1143     nb_frames = 1;
1144
1145     *frame_size = 0;
1146
1147     format_video_sync = video_sync_method;
1148     if (format_video_sync < 0)
1149         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? 2 : 1;
1150
1151     if (format_video_sync) {
1152         double vdelta = sync_ipts - ost->sync_opts;
1153         //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1154         if (vdelta < -1.1)
1155             nb_frames = 0;
1156         else if (format_video_sync == 2) {
1157             if(vdelta<=-0.6){
1158                 nb_frames=0;
1159             }else if(vdelta>0.6)
1160                 ost->sync_opts= lrintf(sync_ipts);
1161         }else if (vdelta > 1.1)
1162             nb_frames = lrintf(vdelta);
1163 //fprintf(stderr, "vdelta:%f, ost->sync_opts:%"PRId64", ost->sync_ipts:%f nb_frames:%d\n", vdelta, ost->sync_opts, get_sync_ipts(ost), nb_frames);
1164         if (nb_frames == 0){
1165             ++nb_frames_drop;
1166             av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
1167         }else if (nb_frames > 1) {
1168             nb_frames_dup += nb_frames - 1;
1169             av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames-1);
1170         }
1171     }else
1172         ost->sync_opts= lrintf(sync_ipts);
1173
1174     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
1175     if (nb_frames <= 0)
1176         return;
1177
1178     do_video_resample(ost, ist, in_picture, &final_picture);
1179
1180     /* duplicates frame if needed */
1181     for(i=0;i<nb_frames;i++) {
1182         AVPacket pkt;
1183         av_init_packet(&pkt);
1184         pkt.stream_index= ost->index;
1185
1186         if (s->oformat->flags & AVFMT_RAWPICTURE) {
1187             /* raw pictures are written as AVPicture structure to
1188                avoid any copies. We support temporarily the older
1189                method. */
1190             enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
1191             enc->coded_frame->top_field_first  = in_picture->top_field_first;
1192             pkt.data= (uint8_t *)final_picture;
1193             pkt.size=  sizeof(AVPicture);
1194             pkt.pts= av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1195             pkt.flags |= AV_PKT_FLAG_KEY;
1196
1197             write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1198         } else {
1199             AVFrame big_picture;
1200
1201             big_picture= *final_picture;
1202             /* better than nothing: use input picture interlaced
1203                settings */
1204             big_picture.interlaced_frame = in_picture->interlaced_frame;
1205             if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1206                 if (ost->top_field_first == -1)
1207                     big_picture.top_field_first = in_picture->top_field_first;
1208                 else
1209                     big_picture.top_field_first = !!ost->top_field_first;
1210             }
1211
1212             /* handles same_quant here. This is not correct because it may
1213                not be a global option */
1214             big_picture.quality = quality;
1215             if (!enc->me_threshold)
1216                 big_picture.pict_type = 0;
1217 //            big_picture.pts = AV_NOPTS_VALUE;
1218             big_picture.pts= ost->sync_opts;
1219 //            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1220 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1221             if (ost->forced_kf_index < ost->forced_kf_count &&
1222                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1223                 big_picture.pict_type = AV_PICTURE_TYPE_I;
1224                 ost->forced_kf_index++;
1225             }
1226             ret = avcodec_encode_video(enc,
1227                                        bit_buffer, bit_buffer_size,
1228                                        &big_picture);
1229             if (ret < 0) {
1230                 av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1231                 exit_program(1);
1232             }
1233
1234             if(ret>0){
1235                 pkt.data= bit_buffer;
1236                 pkt.size= ret;
1237                 if(enc->coded_frame->pts != AV_NOPTS_VALUE)
1238                     pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1239 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1240    pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1241    pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1242
1243                 if(enc->coded_frame->key_frame)
1244                     pkt.flags |= AV_PKT_FLAG_KEY;
1245                 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1246                 *frame_size = ret;
1247                 video_size += ret;
1248                 //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1249                 //        enc->frame_number-1, ret, enc->pict_type);
1250                 /* if two pass, output log */
1251                 if (ost->logfile && enc->stats_out) {
1252                     fprintf(ost->logfile, "%s", enc->stats_out);
1253                 }
1254             }
1255         }
1256         ost->sync_opts++;
1257         ost->frame_number++;
1258     }
1259 }
1260
1261 static double psnr(double d){
1262     return -10.0*log(d)/log(10.0);
1263 }
1264
1265 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1266                            int frame_size)
1267 {
1268     AVCodecContext *enc;
1269     int frame_number;
1270     double ti1, bitrate, avg_bitrate;
1271
1272     /* this is executed just the first time do_video_stats is called */
1273     if (!vstats_file) {
1274         vstats_file = fopen(vstats_filename, "w");
1275         if (!vstats_file) {
1276             perror("fopen");
1277             exit_program(1);
1278         }
1279     }
1280
1281     enc = ost->st->codec;
1282     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1283         frame_number = ost->frame_number;
1284         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1285         if (enc->flags&CODEC_FLAG_PSNR)
1286             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
1287
1288         fprintf(vstats_file,"f_size= %6d ", frame_size);
1289         /* compute pts value */
1290         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1291         if (ti1 < 0.01)
1292             ti1 = 0.01;
1293
1294         bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1295         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1296         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1297             (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1298         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1299     }
1300 }
1301
1302 static void print_report(OutputFile *output_files,
1303                          OutputStream *ost_table, int nb_ostreams,
1304                          int is_last_report, int64_t timer_start)
1305 {
1306     char buf[1024];
1307     OutputStream *ost;
1308     AVFormatContext *oc;
1309     int64_t total_size;
1310     AVCodecContext *enc;
1311     int frame_number, vid, i;
1312     double bitrate, ti1, pts;
1313     static int64_t last_time = -1;
1314     static int qp_histogram[52];
1315
1316     if (!is_last_report) {
1317         int64_t cur_time;
1318         /* display the report every 0.5 seconds */
1319         cur_time = av_gettime();
1320         if (last_time == -1) {
1321             last_time = cur_time;
1322             return;
1323         }
1324         if ((cur_time - last_time) < 500000)
1325             return;
1326         last_time = cur_time;
1327     }
1328
1329
1330     oc = output_files[0].ctx;
1331
1332     total_size = avio_size(oc->pb);
1333     if(total_size<0) // FIXME improve avio_size() so it works with non seekable output too
1334         total_size= avio_tell(oc->pb);
1335
1336     buf[0] = '\0';
1337     ti1 = 1e10;
1338     vid = 0;
1339     for(i=0;i<nb_ostreams;i++) {
1340         float q = -1;
1341         ost = &ost_table[i];
1342         enc = ost->st->codec;
1343         if (!ost->st->stream_copy && enc->coded_frame)
1344             q = enc->coded_frame->quality/(float)FF_QP2LAMBDA;
1345         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1346             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1347         }
1348         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1349             float t = (av_gettime()-timer_start) / 1000000.0;
1350
1351             frame_number = ost->frame_number;
1352             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1353                      frame_number, (t>1)?(int)(frame_number/t+0.5) : 0, q);
1354             if(is_last_report)
1355                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1356             if(qp_hist){
1357                 int j;
1358                 int qp = lrintf(q);
1359                 if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
1360                     qp_histogram[qp]++;
1361                 for(j=0; j<32; j++)
1362                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
1363             }
1364             if (enc->flags&CODEC_FLAG_PSNR){
1365                 int j;
1366                 double error, error_sum=0;
1367                 double scale, scale_sum=0;
1368                 char type[3]= {'Y','U','V'};
1369                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1370                 for(j=0; j<3; j++){
1371                     if(is_last_report){
1372                         error= enc->error[j];
1373                         scale= enc->width*enc->height*255.0*255.0*frame_number;
1374                     }else{
1375                         error= enc->coded_frame->error[j];
1376                         scale= enc->width*enc->height*255.0*255.0;
1377                     }
1378                     if(j) scale/=4;
1379                     error_sum += error;
1380                     scale_sum += scale;
1381                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
1382                 }
1383                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
1384             }
1385             vid = 1;
1386         }
1387         /* compute min output value */
1388         pts = (double)ost->st->pts.val * av_q2d(ost->st->time_base);
1389         if ((pts < ti1) && (pts > 0))
1390             ti1 = pts;
1391     }
1392     if (ti1 < 0.01)
1393         ti1 = 0.01;
1394
1395     bitrate = (double)(total_size * 8) / ti1 / 1000.0;
1396
1397     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1398             "size=%8.0fkB time=%0.2f bitrate=%6.1fkbits/s",
1399             (double)total_size / 1024, ti1, bitrate);
1400
1401     if (nb_frames_dup || nb_frames_drop)
1402         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1403                 nb_frames_dup, nb_frames_drop);
1404
1405     av_log(NULL, is_last_report ? AV_LOG_WARNING : AV_LOG_INFO, "%s    \r", buf);
1406
1407     fflush(stderr);
1408
1409     if (is_last_report) {
1410         int64_t raw= audio_size + video_size + extra_size;
1411         av_log(NULL, AV_LOG_INFO, "\n");
1412         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1413                video_size/1024.0,
1414                audio_size/1024.0,
1415                extra_size/1024.0,
1416                100.0*(total_size - raw)/raw
1417         );
1418     }
1419 }
1420
1421 static void generate_silence(uint8_t* buf, enum AVSampleFormat sample_fmt, size_t size)
1422 {
1423     int fill_char = 0x00;
1424     if (sample_fmt == AV_SAMPLE_FMT_U8)
1425         fill_char = 0x80;
1426     memset(buf, fill_char, size);
1427 }
1428
1429 static void flush_encoders(OutputStream *ost_table, int nb_ostreams)
1430 {
1431     int i, ret;
1432
1433     for (i = 0; i < nb_ostreams; i++) {
1434         OutputStream   *ost = &ost_table[i];
1435         AVCodecContext *enc = ost->st->codec;
1436         AVFormatContext *os = output_files[ost->file_index].ctx;
1437
1438         if (!ost->encoding_needed)
1439             continue;
1440
1441         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
1442             continue;
1443         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE))
1444             continue;
1445
1446         for(;;) {
1447             AVPacket pkt;
1448             int fifo_bytes;
1449             av_init_packet(&pkt);
1450             pkt.stream_index= ost->index;
1451
1452             switch (ost->st->codec->codec_type) {
1453             case AVMEDIA_TYPE_AUDIO:
1454                 fifo_bytes = av_fifo_size(ost->fifo);
1455                 ret = 0;
1456                 /* encode any samples remaining in fifo */
1457                 if (fifo_bytes > 0) {
1458                     int osize = av_get_bytes_per_sample(enc->sample_fmt);
1459                     int fs_tmp = enc->frame_size;
1460
1461                     av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1462                     if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1463                         enc->frame_size = fifo_bytes / (osize * enc->channels);
1464                     } else { /* pad */
1465                         int frame_bytes = enc->frame_size*osize*enc->channels;
1466                         if (allocated_audio_buf_size < frame_bytes)
1467                             exit_program(1);
1468                         generate_silence(audio_buf+fifo_bytes, enc->sample_fmt, frame_bytes - fifo_bytes);
1469                     }
1470
1471                     ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1472                     pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1473                                               ost->st->time_base.num, enc->sample_rate);
1474                     enc->frame_size = fs_tmp;
1475                 }
1476                 if (ret <= 0) {
1477                     ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1478                 }
1479                 if (ret < 0) {
1480                     av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1481                     exit_program(1);
1482                 }
1483                 audio_size += ret;
1484                 pkt.flags |= AV_PKT_FLAG_KEY;
1485                 break;
1486             case AVMEDIA_TYPE_VIDEO:
1487                 ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1488                 if (ret < 0) {
1489                     av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1490                     exit_program(1);
1491                 }
1492                 video_size += ret;
1493                 if(enc->coded_frame && enc->coded_frame->key_frame)
1494                     pkt.flags |= AV_PKT_FLAG_KEY;
1495                 if (ost->logfile && enc->stats_out) {
1496                     fprintf(ost->logfile, "%s", enc->stats_out);
1497                 }
1498                 break;
1499             default:
1500                 ret=-1;
1501             }
1502
1503             if (ret <= 0)
1504                 break;
1505             pkt.data = bit_buffer;
1506             pkt.size = ret;
1507             if (enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1508                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1509             write_frame(os, &pkt, ost->st->codec, ost->bitstream_filters);
1510         }
1511     }
1512 }
1513
1514 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1515 static int output_packet(InputStream *ist, int ist_index,
1516                          OutputStream *ost_table, int nb_ostreams,
1517                          const AVPacket *pkt)
1518 {
1519     AVFormatContext *os;
1520     OutputStream *ost;
1521     int ret = 0, i;
1522     int got_output;
1523     void *buffer_to_free = NULL;
1524     static unsigned int samples_size= 0;
1525     AVSubtitle subtitle, *subtitle_to_free;
1526     int64_t pkt_pts = AV_NOPTS_VALUE;
1527 #if CONFIG_AVFILTER
1528     int frame_available;
1529 #endif
1530     float quality;
1531
1532     AVPacket avpkt;
1533     int bps = av_get_bytes_per_sample(ist->st->codec->sample_fmt);
1534
1535     if(ist->next_pts == AV_NOPTS_VALUE)
1536         ist->next_pts= ist->pts;
1537
1538     if (pkt == NULL) {
1539         /* EOF handling */
1540         av_init_packet(&avpkt);
1541         avpkt.data = NULL;
1542         avpkt.size = 0;
1543         goto handle_eof;
1544     } else {
1545         avpkt = *pkt;
1546     }
1547
1548     if(pkt->dts != AV_NOPTS_VALUE)
1549         ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1550     if(pkt->pts != AV_NOPTS_VALUE)
1551         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1552
1553     //while we have more to decode or while the decoder did output something on EOF
1554     while (avpkt.size > 0 || (!pkt && got_output)) {
1555         uint8_t *data_buf, *decoded_data_buf;
1556         int data_size, decoded_data_size;
1557         AVFrame *decoded_frame, *filtered_frame;
1558     handle_eof:
1559         ist->pts= ist->next_pts;
1560
1561         if(avpkt.size && avpkt.size != pkt->size)
1562             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
1563                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1564             ist->showed_multi_packet_warning=1;
1565
1566         /* decode the packet if needed */
1567         decoded_frame    = filtered_frame = NULL;
1568         decoded_data_buf = NULL; /* fail safe */
1569         decoded_data_size= 0;
1570         data_buf  = avpkt.data;
1571         data_size = avpkt.size;
1572         subtitle_to_free = NULL;
1573         if (ist->decoding_needed) {
1574             switch(ist->st->codec->codec_type) {
1575             case AVMEDIA_TYPE_AUDIO:{
1576                 if(pkt && samples_size < FFMAX(pkt->size * bps, AVCODEC_MAX_AUDIO_FRAME_SIZE)) {
1577                     samples_size = FFMAX(pkt->size * bps, AVCODEC_MAX_AUDIO_FRAME_SIZE);
1578                     av_free(samples);
1579                     samples= av_malloc(samples_size);
1580                 }
1581                 decoded_data_size= samples_size;
1582                     /* XXX: could avoid copy if PCM 16 bits with same
1583                        endianness as CPU */
1584                 ret = avcodec_decode_audio3(ist->st->codec, samples, &decoded_data_size,
1585                                             &avpkt);
1586                 if (ret < 0)
1587                     return ret;
1588                 avpkt.data += ret;
1589                 avpkt.size -= ret;
1590                 data_size   = ret;
1591                 got_output  = decoded_data_size > 0;
1592                 /* Some bug in mpeg audio decoder gives */
1593                 /* decoded_data_size < 0, it seems they are overflows */
1594                 if (!got_output) {
1595                     /* no audio frame */
1596                     continue;
1597                 }
1598                 decoded_data_buf = (uint8_t *)samples;
1599                 ist->next_pts += ((int64_t)AV_TIME_BASE/bps * decoded_data_size) /
1600                     (ist->st->codec->sample_rate * ist->st->codec->channels);
1601                 break;}
1602             case AVMEDIA_TYPE_VIDEO:
1603                     if (!(decoded_frame = avcodec_alloc_frame()))
1604                         return AVERROR(ENOMEM);
1605                     avpkt.pts = pkt_pts;
1606                     avpkt.dts = ist->pts;
1607                     pkt_pts = AV_NOPTS_VALUE;
1608
1609                     ret = avcodec_decode_video2(ist->st->codec,
1610                                                 decoded_frame, &got_output, &avpkt);
1611                     quality = same_quant ? decoded_frame->quality : 0;
1612                     if (ret < 0)
1613                         goto fail;
1614                     if (!got_output) {
1615                         /* no picture yet */
1616                         av_freep(&decoded_frame);
1617                         goto discard_packet;
1618                     }
1619                     ist->next_pts = ist->pts = guess_correct_pts(&ist->pts_ctx, decoded_frame->pkt_pts,
1620                                                                  decoded_frame->pkt_dts);
1621                     if (ist->st->codec->time_base.num != 0) {
1622                         int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1623                         ist->next_pts += ((int64_t)AV_TIME_BASE *
1624                                           ist->st->codec->time_base.num * ticks) /
1625                             ist->st->codec->time_base.den;
1626                     }
1627                     avpkt.size = 0;
1628                     buffer_to_free = NULL;
1629                     pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
1630                     break;
1631             case AVMEDIA_TYPE_SUBTITLE:
1632                 ret = avcodec_decode_subtitle2(ist->st->codec,
1633                                                &subtitle, &got_output, &avpkt);
1634                 if (ret < 0)
1635                     return ret;
1636                 if (!got_output) {
1637                     goto discard_packet;
1638                 }
1639                 subtitle_to_free = &subtitle;
1640                 avpkt.size = 0;
1641                 break;
1642             default:
1643                 return -1;
1644             }
1645         } else {
1646             switch(ist->st->codec->codec_type) {
1647             case AVMEDIA_TYPE_AUDIO:
1648                 ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1649                     ist->st->codec->sample_rate;
1650                 break;
1651             case AVMEDIA_TYPE_VIDEO:
1652                 if (ist->st->codec->time_base.num != 0) {
1653                     int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1654                     ist->next_pts += ((int64_t)AV_TIME_BASE *
1655                                       ist->st->codec->time_base.num * ticks) /
1656                         ist->st->codec->time_base.den;
1657                 }
1658                 break;
1659             }
1660             avpkt.size = 0;
1661         }
1662
1663         // preprocess audio (volume)
1664         if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1665             if (audio_volume != 256) {
1666                 switch (ist->st->codec->sample_fmt) {
1667                 case AV_SAMPLE_FMT_U8:
1668                 {
1669                     uint8_t *volp = samples;
1670                     for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1671                         int v = (((*volp - 128) * audio_volume + 128) >> 8) + 128;
1672                         *volp++ = av_clip_uint8(v);
1673                     }
1674                     break;
1675                 }
1676                 case AV_SAMPLE_FMT_S16:
1677                 {
1678                     int16_t *volp = samples;
1679                     for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1680                         int v = ((*volp) * audio_volume + 128) >> 8;
1681                         *volp++ = av_clip_int16(v);
1682                     }
1683                     break;
1684                 }
1685                 case AV_SAMPLE_FMT_S32:
1686                 {
1687                     int32_t *volp = samples;
1688                     for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1689                         int64_t v = (((int64_t)*volp * audio_volume + 128) >> 8);
1690                         *volp++ = av_clipl_int32(v);
1691                     }
1692                     break;
1693                 }
1694                 case AV_SAMPLE_FMT_FLT:
1695                 {
1696                     float *volp = samples;
1697                     float scale = audio_volume / 256.f;
1698                     for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1699                         *volp++ *= scale;
1700                     }
1701                     break;
1702                 }
1703                 case AV_SAMPLE_FMT_DBL:
1704                 {
1705                     double *volp = samples;
1706                     double scale = audio_volume / 256.;
1707                     for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1708                         *volp++ *= scale;
1709                     }
1710                     break;
1711                 }
1712                 default:
1713                     av_log(NULL, AV_LOG_FATAL,
1714                            "Audio volume adjustment on sample format %s is not supported.\n",
1715                            av_get_sample_fmt_name(ist->st->codec->sample_fmt));
1716                     exit_program(1);
1717                 }
1718             }
1719         }
1720
1721         /* frame rate emulation */
1722         if (input_files[ist->file_index].rate_emu) {
1723             int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1724             int64_t now = av_gettime() - ist->start;
1725             if (pts > now)
1726                 usleep(pts - now);
1727         }
1728         /* if output time reached then transcode raw format,
1729            encode packets and output them */
1730         for (i = 0; i < nb_ostreams; i++) {
1731             OutputFile *of = &output_files[ost_table[i].file_index];
1732             int frame_size;
1733
1734             ost = &ost_table[i];
1735             if (ost->source_index != ist_index)
1736                 continue;
1737
1738             if (of->start_time && ist->pts < of->start_time)
1739                 continue;
1740
1741             if (of->recording_time != INT64_MAX &&
1742                 av_compare_ts(ist->pts, AV_TIME_BASE_Q, of->recording_time + of->start_time,
1743                               (AVRational){1, 1000000}) >= 0) {
1744                 ost->is_past_recording_time = 1;
1745                 continue;
1746             }
1747
1748 #if CONFIG_AVFILTER
1749             if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
1750                 ost->input_video_filter) {
1751                 AVRational sar;
1752                 if (ist->st->sample_aspect_ratio.num)
1753                     sar = ist->st->sample_aspect_ratio;
1754                 else
1755                     sar = ist->st->codec->sample_aspect_ratio;
1756                 av_vsrc_buffer_add_frame(ost->input_video_filter, decoded_frame, ist->pts, sar);
1757                 if (!(filtered_frame = avcodec_alloc_frame())) {
1758                     ret = AVERROR(ENOMEM);
1759                     goto fail;
1760                 }
1761             }
1762             frame_available = ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO ||
1763                 !ost->output_video_filter || avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1764             while (frame_available) {
1765                 AVRational ist_pts_tb;
1766                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ost->output_video_filter)
1767                     get_filtered_video_frame(ost->output_video_filter, filtered_frame, &ost->picref, &ist_pts_tb);
1768                 if (ost->picref)
1769                     ist->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1770 #else
1771                 filtered_frame = decoded_frame;
1772 #endif
1773                 os = output_files[ost->file_index].ctx;
1774
1775                 /* set the input output pts pairs */
1776                 //ost->sync_ipts = (double)(ist->pts + input_files[ist->file_index].ts_offset - start_time)/ AV_TIME_BASE;
1777
1778                 if (ost->encoding_needed) {
1779                     av_assert0(ist->decoding_needed);
1780                     switch(ost->st->codec->codec_type) {
1781                     case AVMEDIA_TYPE_AUDIO:
1782                         do_audio_out(os, ost, ist, decoded_data_buf, decoded_data_size);
1783                         break;
1784                     case AVMEDIA_TYPE_VIDEO:
1785 #if CONFIG_AVFILTER
1786                         if (ost->picref->video && !ost->frame_aspect_ratio)
1787                             ost->st->codec->sample_aspect_ratio = ost->picref->video->pixel_aspect;
1788 #endif
1789                         do_video_out(os, ost, ist, filtered_frame, &frame_size,
1790                                      same_quant ? quality : ost->st->codec->global_quality);
1791                         if (vstats_filename && frame_size)
1792                             do_video_stats(os, ost, frame_size);
1793                         break;
1794                     case AVMEDIA_TYPE_SUBTITLE:
1795                         do_subtitle_out(os, ost, ist, &subtitle,
1796                                         pkt->pts);
1797                         break;
1798                     default:
1799                         abort();
1800                     }
1801                 } else {
1802                     AVPacket opkt;
1803                     int64_t ost_tb_start_time= av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1804
1805                     av_init_packet(&opkt);
1806
1807                     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) && !copy_initial_nonkeyframes)
1808 #if !CONFIG_AVFILTER
1809                         continue;
1810 #else
1811                         goto cont;
1812 #endif
1813
1814                     /* no reencoding needed : output the packet directly */
1815                     /* force the input stream PTS */
1816
1817                     if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1818                         audio_size += data_size;
1819                     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1820                         video_size += data_size;
1821                         ost->sync_opts++;
1822                     }
1823
1824                     opkt.stream_index= ost->index;
1825                     if(pkt->pts != AV_NOPTS_VALUE)
1826                         opkt.pts= av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1827                     else
1828                         opkt.pts= AV_NOPTS_VALUE;
1829
1830                     if (pkt->dts == AV_NOPTS_VALUE)
1831                         opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1832                     else
1833                         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1834                     opkt.dts -= ost_tb_start_time;
1835
1836                     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1837                     opkt.flags= pkt->flags;
1838
1839                     //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1840                     if(   ost->st->codec->codec_id != CODEC_ID_H264
1841                        && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1842                        && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1843                        ) {
1844                         if(av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, data_buf, data_size, pkt->flags & AV_PKT_FLAG_KEY))
1845                             opkt.destruct= av_destruct_packet;
1846                     } else {
1847                         opkt.data = data_buf;
1848                         opkt.size = data_size;
1849                     }
1850
1851                     write_frame(os, &opkt, ost->st->codec, ost->bitstream_filters);
1852                     ost->st->codec->frame_number++;
1853                     ost->frame_number++;
1854                     av_free_packet(&opkt);
1855                 }
1856 #if CONFIG_AVFILTER
1857                 cont:
1858                 frame_available = (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) &&
1859                                    ost->output_video_filter && avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1860                 if (ost->picref)
1861                     avfilter_unref_buffer(ost->picref);
1862             }
1863             av_freep(&filtered_frame);
1864 #endif
1865             }
1866
1867 fail:
1868         av_free(buffer_to_free);
1869         /* XXX: allocate the subtitles in the codec ? */
1870         if (subtitle_to_free) {
1871             avsubtitle_free(subtitle_to_free);
1872             subtitle_to_free = NULL;
1873         }
1874         av_freep(&decoded_frame);
1875         if (ret < 0)
1876             return ret;
1877     }
1878  discard_packet:
1879
1880     return 0;
1881 }
1882
1883 static void print_sdp(OutputFile *output_files, int n)
1884 {
1885     char sdp[2048];
1886     int i;
1887     AVFormatContext **avc = av_malloc(sizeof(*avc)*n);
1888
1889     if (!avc)
1890         exit_program(1);
1891     for (i = 0; i < n; i++)
1892         avc[i] = output_files[i].ctx;
1893
1894     av_sdp_create(avc, n, sdp, sizeof(sdp));
1895     printf("SDP:\n%s\n", sdp);
1896     fflush(stdout);
1897     av_freep(&avc);
1898 }
1899
1900 static int init_input_stream(int ist_index, OutputStream *output_streams, int nb_output_streams,
1901                              char *error, int error_len)
1902 {
1903     int i;
1904     InputStream *ist = &input_streams[ist_index];
1905     if (ist->decoding_needed) {
1906         AVCodec *codec = ist->dec;
1907         if (!codec) {
1908             snprintf(error, error_len, "Decoder (codec id %d) not found for input stream #%d.%d",
1909                     ist->st->codec->codec_id, ist->file_index, ist->st->index);
1910             return AVERROR(EINVAL);
1911         }
1912
1913         /* update requested sample format for the decoder based on the
1914            corresponding encoder sample format */
1915         for (i = 0; i < nb_output_streams; i++) {
1916             OutputStream *ost = &output_streams[i];
1917             if (ost->source_index == ist_index) {
1918                 update_sample_fmt(ist->st->codec, codec, ost->st->codec);
1919                 break;
1920             }
1921         }
1922
1923         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
1924             snprintf(error, error_len, "Error while opening decoder for input stream #%d.%d",
1925                     ist->file_index, ist->st->index);
1926             return AVERROR(EINVAL);
1927         }
1928         assert_codec_experimental(ist->st->codec, 0);
1929         assert_avoptions(ist->opts);
1930     }
1931
1932     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;
1933     ist->next_pts = AV_NOPTS_VALUE;
1934     init_pts_correction(&ist->pts_ctx);
1935     ist->is_start = 1;
1936
1937     return 0;
1938 }
1939
1940 static int transcode_init(OutputFile *output_files,
1941                           int nb_output_files,
1942                           InputFile *input_files,
1943                           int nb_input_files)
1944 {
1945     int ret = 0, i, j, k;
1946     AVFormatContext *os;
1947     AVCodecContext *codec, *icodec;
1948     OutputStream *ost;
1949     InputStream *ist;
1950     char error[1024];
1951     int want_sdp = 1;
1952
1953     /* init framerate emulation */
1954     for (i = 0; i < nb_input_files; i++) {
1955         InputFile *ifile = &input_files[i];
1956         if (ifile->rate_emu)
1957             for (j = 0; j < ifile->nb_streams; j++)
1958                 input_streams[j + ifile->ist_index].start = av_gettime();
1959     }
1960
1961     /* output stream init */
1962     for(i=0;i<nb_output_files;i++) {
1963         os = output_files[i].ctx;
1964         if (!os->nb_streams && !(os->oformat->flags & AVFMT_NOSTREAMS)) {
1965             av_dump_format(os, i, os->filename, 1);
1966             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
1967             return AVERROR(EINVAL);
1968         }
1969     }
1970
1971     /* for each output stream, we compute the right encoding parameters */
1972     for (i = 0; i < nb_output_streams; i++) {
1973         ost = &output_streams[i];
1974         os = output_files[ost->file_index].ctx;
1975         ist = &input_streams[ost->source_index];
1976
1977         codec = ost->st->codec;
1978         icodec = ist->st->codec;
1979
1980         ost->st->disposition = ist->st->disposition;
1981         codec->bits_per_raw_sample= icodec->bits_per_raw_sample;
1982         codec->chroma_sample_location = icodec->chroma_sample_location;
1983
1984         if (ost->st->stream_copy) {
1985             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
1986
1987             if (extra_size > INT_MAX) {
1988                 return AVERROR(EINVAL);
1989             }
1990
1991             /* if stream_copy is selected, no need to decode or encode */
1992             codec->codec_id = icodec->codec_id;
1993             codec->codec_type = icodec->codec_type;
1994
1995             if(!codec->codec_tag){
1996                 if(   !os->oformat->codec_tag
1997                    || av_codec_get_id (os->oformat->codec_tag, icodec->codec_tag) == codec->codec_id
1998                    || av_codec_get_tag(os->oformat->codec_tag, icodec->codec_id) <= 0)
1999                     codec->codec_tag = icodec->codec_tag;
2000             }
2001
2002             codec->bit_rate = icodec->bit_rate;
2003             codec->rc_max_rate    = icodec->rc_max_rate;
2004             codec->rc_buffer_size = icodec->rc_buffer_size;
2005             codec->extradata= av_mallocz(extra_size);
2006             if (!codec->extradata) {
2007                 return AVERROR(ENOMEM);
2008             }
2009             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2010             codec->extradata_size= icodec->extradata_size;
2011             if(!copy_tb && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base) && av_q2d(ist->st->time_base) < 1.0/500){
2012                 codec->time_base = icodec->time_base;
2013                 codec->time_base.num *= icodec->ticks_per_frame;
2014                 av_reduce(&codec->time_base.num, &codec->time_base.den,
2015                           codec->time_base.num, codec->time_base.den, INT_MAX);
2016             }else
2017                 codec->time_base = ist->st->time_base;
2018             switch(codec->codec_type) {
2019             case AVMEDIA_TYPE_AUDIO:
2020                 if(audio_volume != 256) {
2021                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2022                     exit_program(1);
2023                 }
2024                 codec->channel_layout = icodec->channel_layout;
2025                 codec->sample_rate = icodec->sample_rate;
2026                 codec->channels = icodec->channels;
2027                 codec->frame_size = icodec->frame_size;
2028                 codec->audio_service_type = icodec->audio_service_type;
2029                 codec->block_align= icodec->block_align;
2030                 if(codec->block_align == 1 && codec->codec_id == CODEC_ID_MP3)
2031                     codec->block_align= 0;
2032                 if(codec->codec_id == CODEC_ID_AC3)
2033                     codec->block_align= 0;
2034                 break;
2035             case AVMEDIA_TYPE_VIDEO:
2036                 codec->pix_fmt = icodec->pix_fmt;
2037                 codec->width = icodec->width;
2038                 codec->height = icodec->height;
2039                 codec->has_b_frames = icodec->has_b_frames;
2040                 if (!codec->sample_aspect_ratio.num) {
2041                     codec->sample_aspect_ratio =
2042                     ost->st->sample_aspect_ratio =
2043                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2044                         ist->st->codec->sample_aspect_ratio.num ?
2045                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2046                 }
2047                 break;
2048             case AVMEDIA_TYPE_SUBTITLE:
2049                 codec->width = icodec->width;
2050                 codec->height = icodec->height;
2051                 break;
2052             case AVMEDIA_TYPE_DATA:
2053             case AVMEDIA_TYPE_ATTACHMENT:
2054                 break;
2055             default:
2056                 abort();
2057             }
2058         } else {
2059             if (!ost->enc)
2060                 ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
2061             ist->decoding_needed = 1;
2062             ost->encoding_needed = 1;
2063             switch(codec->codec_type) {
2064             case AVMEDIA_TYPE_AUDIO:
2065                 ost->fifo= av_fifo_alloc(1024);
2066                 if (!ost->fifo) {
2067                     return AVERROR(ENOMEM);
2068                 }
2069                 ost->reformat_pair = MAKE_SFMT_PAIR(AV_SAMPLE_FMT_NONE,AV_SAMPLE_FMT_NONE);
2070                 if (!codec->sample_rate) {
2071                     codec->sample_rate = icodec->sample_rate;
2072                     if (icodec->lowres)
2073                         codec->sample_rate >>= icodec->lowres;
2074                 }
2075                 choose_sample_rate(ost->st, ost->enc);
2076                 codec->time_base = (AVRational){1, codec->sample_rate};
2077                 if (codec->sample_fmt == AV_SAMPLE_FMT_NONE)
2078                     codec->sample_fmt = icodec->sample_fmt;
2079                 choose_sample_fmt(ost->st, ost->enc);
2080                 if (!codec->channels)
2081                     codec->channels = icodec->channels;
2082                 codec->channel_layout = icodec->channel_layout;
2083                 if (av_get_channel_layout_nb_channels(codec->channel_layout) != codec->channels)
2084                     codec->channel_layout = 0;
2085                 ost->audio_resample = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
2086                 icodec->request_channels = codec->channels;
2087                 ost->resample_sample_fmt  = icodec->sample_fmt;
2088                 ost->resample_sample_rate = icodec->sample_rate;
2089                 ost->resample_channels    = icodec->channels;
2090                 break;
2091             case AVMEDIA_TYPE_VIDEO:
2092                 if (codec->pix_fmt == PIX_FMT_NONE)
2093                     codec->pix_fmt = icodec->pix_fmt;
2094                 choose_pixel_fmt(ost->st, ost->enc);
2095
2096                 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2097                     av_log(NULL, AV_LOG_FATAL, "Video pixel format is unknown, stream cannot be encoded\n");
2098                     exit_program(1);
2099                 }
2100
2101                 if (!codec->width || !codec->height) {
2102                     codec->width  = icodec->width;
2103                     codec->height = icodec->height;
2104                 }
2105
2106                 ost->video_resample = codec->width   != icodec->width  ||
2107                                       codec->height  != icodec->height ||
2108                                       codec->pix_fmt != icodec->pix_fmt;
2109                 if (ost->video_resample) {
2110 #if !CONFIG_AVFILTER
2111                     avcodec_get_frame_defaults(&ost->pict_tmp);
2112                     if(avpicture_alloc((AVPicture*)&ost->pict_tmp, codec->pix_fmt,
2113                                        codec->width, codec->height)) {
2114                         av_log(NULL, AV_LOG_FATAL, "Cannot allocate temp picture, check pix fmt\n");
2115                         exit_program(1);
2116                     }
2117                     ost->img_resample_ctx = sws_getContext(
2118                         icodec->width,
2119                         icodec->height,
2120                         icodec->pix_fmt,
2121                         codec->width,
2122                         codec->height,
2123                         codec->pix_fmt,
2124                         ost->sws_flags, NULL, NULL, NULL);
2125                     if (ost->img_resample_ctx == NULL) {
2126                         av_log(NULL, AV_LOG_FATAL, "Cannot get resampling context\n");
2127                         exit_program(1);
2128                     }
2129 #endif
2130                     codec->bits_per_raw_sample= 0;
2131                 }
2132
2133                 ost->resample_height = icodec->height;
2134                 ost->resample_width  = icodec->width;
2135                 ost->resample_pix_fmt= icodec->pix_fmt;
2136
2137                 if (!ost->frame_rate.num)
2138                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25,1};
2139                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2140                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2141                     ost->frame_rate = ost->enc->supported_framerates[idx];
2142                 }
2143                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
2144
2145 #if CONFIG_AVFILTER
2146                 if (configure_video_filters(ist, ost)) {
2147                     av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2148                     exit(1);
2149                 }
2150 #endif
2151                 break;
2152             case AVMEDIA_TYPE_SUBTITLE:
2153                 break;
2154             default:
2155                 abort();
2156                 break;
2157             }
2158             /* two pass mode */
2159             if ((codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2160                 char logfilename[1024];
2161                 FILE *f;
2162
2163                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2164                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2165                          i);
2166                 if (codec->flags & CODEC_FLAG_PASS1) {
2167                     f = fopen(logfilename, "wb");
2168                     if (!f) {
2169                         av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2170                                logfilename, strerror(errno));
2171                         exit_program(1);
2172                     }
2173                     ost->logfile = f;
2174                 } else {
2175                     char  *logbuffer;
2176                     size_t logbuffer_size;
2177                     if (read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2178                         av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2179                                logfilename);
2180                         exit_program(1);
2181                     }
2182                     codec->stats_in = logbuffer;
2183                 }
2184             }
2185         }
2186         if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2187             int size= codec->width * codec->height;
2188             bit_buffer_size= FFMAX(bit_buffer_size, 6*size + 200);
2189         }
2190     }
2191
2192     if (!bit_buffer)
2193         bit_buffer = av_malloc(bit_buffer_size);
2194     if (!bit_buffer) {
2195         av_log(NULL, AV_LOG_ERROR, "Cannot allocate %d bytes output buffer\n",
2196                bit_buffer_size);
2197         return AVERROR(ENOMEM);
2198     }
2199
2200     /* open each encoder */
2201     for (i = 0; i < nb_output_streams; i++) {
2202         ost = &output_streams[i];
2203         if (ost->encoding_needed) {
2204             AVCodec *codec = ost->enc;
2205             AVCodecContext *dec = input_streams[ost->source_index].st->codec;
2206             if (!codec) {
2207                 snprintf(error, sizeof(error), "Encoder (codec id %d) not found for output stream #%d.%d",
2208                          ost->st->codec->codec_id, ost->file_index, ost->index);
2209                 ret = AVERROR(EINVAL);
2210                 goto dump_format;
2211             }
2212             if (dec->subtitle_header) {
2213                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2214                 if (!ost->st->codec->subtitle_header) {
2215                     ret = AVERROR(ENOMEM);
2216                     goto dump_format;
2217                 }
2218                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2219                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2220             }
2221             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2222                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d.%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2223                         ost->file_index, ost->index);
2224                 ret = AVERROR(EINVAL);
2225                 goto dump_format;
2226             }
2227             assert_codec_experimental(ost->st->codec, 1);
2228             assert_avoptions(ost->opts);
2229             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2230                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2231                                              "It takes bits/s as argument, not kbits/s\n");
2232             extra_size += ost->st->codec->extradata_size;
2233
2234             if (ost->st->codec->me_threshold)
2235                 input_streams[ost->source_index].st->codec->debug |= FF_DEBUG_MV;
2236         }
2237     }
2238
2239     /* init input streams */
2240     for (i = 0; i < nb_input_streams; i++)
2241         if ((ret = init_input_stream(i, output_streams, nb_output_streams, error, sizeof(error))) < 0)
2242             goto dump_format;
2243
2244     /* discard unused programs */
2245     for (i = 0; i < nb_input_files; i++) {
2246         InputFile *ifile = &input_files[i];
2247         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2248             AVProgram *p = ifile->ctx->programs[j];
2249             int discard  = AVDISCARD_ALL;
2250
2251             for (k = 0; k < p->nb_stream_indexes; k++)
2252                 if (!input_streams[ifile->ist_index + p->stream_index[k]].discard) {
2253                     discard = AVDISCARD_DEFAULT;
2254                     break;
2255                 }
2256             p->discard = discard;
2257         }
2258     }
2259
2260     /* open files and write file headers */
2261     for (i = 0; i < nb_output_files; i++) {
2262         os = output_files[i].ctx;
2263         if (avformat_write_header(os, &output_files[i].opts) < 0) {
2264             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2265             ret = AVERROR(EINVAL);
2266             goto dump_format;
2267         }
2268         assert_avoptions(output_files[i].opts);
2269         if (strcmp(os->oformat->name, "rtp")) {
2270             want_sdp = 0;
2271         }
2272     }
2273
2274  dump_format:
2275     /* dump the file output parameters - cannot be done before in case
2276        of stream copy */
2277     for(i=0;i<nb_output_files;i++) {
2278         av_dump_format(output_files[i].ctx, i, output_files[i].ctx->filename, 1);
2279     }
2280
2281     /* dump the stream mapping */
2282     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2283     for (i = 0; i < nb_output_streams; i++) {
2284         ost = &output_streams[i];
2285         av_log(NULL, AV_LOG_INFO, "  Stream #%d.%d -> #%d.%d",
2286                input_streams[ost->source_index].file_index,
2287                input_streams[ost->source_index].st->index,
2288                ost->file_index,
2289                ost->index);
2290         if (ost->sync_ist != &input_streams[ost->source_index])
2291             av_log(NULL, AV_LOG_INFO, " [sync #%d.%d]",
2292                    ost->sync_ist->file_index,
2293                    ost->sync_ist->st->index);
2294         if (ost->st->stream_copy)
2295             av_log(NULL, AV_LOG_INFO, " (copy)");
2296         else
2297             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index].dec ?
2298                    input_streams[ost->source_index].dec->name : "?",
2299                    ost->enc ? ost->enc->name : "?");
2300         av_log(NULL, AV_LOG_INFO, "\n");
2301     }
2302
2303     if (ret) {
2304         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2305         return ret;
2306     }
2307
2308     if (want_sdp) {
2309         print_sdp(output_files, nb_output_files);
2310     }
2311
2312     return 0;
2313 }
2314
2315 /*
2316  * The following code is the main loop of the file converter
2317  */
2318 static int transcode(OutputFile *output_files,
2319                      int nb_output_files,
2320                      InputFile *input_files,
2321                      int nb_input_files)
2322 {
2323     int ret, i;
2324     AVFormatContext *is, *os;
2325     OutputStream *ost;
2326     InputStream *ist;
2327     uint8_t *no_packet;
2328     int no_packet_count=0;
2329     int64_t timer_start;
2330
2331     if (!(no_packet = av_mallocz(nb_input_files)))
2332         exit_program(1);
2333
2334     ret = transcode_init(output_files, nb_output_files, input_files, nb_input_files);
2335     if (ret < 0)
2336         goto fail;
2337
2338     av_log(NULL, AV_LOG_INFO, "Press ctrl-c to stop encoding\n");
2339     term_init();
2340
2341     timer_start = av_gettime();
2342
2343     for(; received_sigterm == 0;) {
2344         int file_index, ist_index;
2345         AVPacket pkt;
2346         int64_t ipts_min;
2347         double opts_min;
2348
2349         ipts_min = INT64_MAX;
2350         opts_min= 1e100;
2351
2352         /* select the stream that we must read now by looking at the
2353            smallest output pts */
2354         file_index = -1;
2355         for (i = 0; i < nb_output_streams; i++) {
2356             OutputFile *of;
2357             int64_t ipts;
2358             double  opts;
2359             ost = &output_streams[i];
2360             of = &output_files[ost->file_index];
2361             os = output_files[ost->file_index].ctx;
2362             ist = &input_streams[ost->source_index];
2363             if (ost->is_past_recording_time || no_packet[ist->file_index] ||
2364                 (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2365                 continue;
2366             opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2367             ipts = ist->pts;
2368             if (!input_files[ist->file_index].eof_reached){
2369                 if(ipts < ipts_min) {
2370                     ipts_min = ipts;
2371                     if(input_sync ) file_index = ist->file_index;
2372                 }
2373                 if(opts < opts_min) {
2374                     opts_min = opts;
2375                     if(!input_sync) file_index = ist->file_index;
2376                 }
2377             }
2378             if (ost->frame_number >= ost->max_frames) {
2379                 int j;
2380                 for (j = 0; j < of->ctx->nb_streams; j++)
2381                     output_streams[of->ost_index + j].is_past_recording_time = 1;
2382                 continue;
2383             }
2384         }
2385         /* if none, if is finished */
2386         if (file_index < 0) {
2387             if(no_packet_count){
2388                 no_packet_count=0;
2389                 memset(no_packet, 0, nb_input_files);
2390                 usleep(10000);
2391                 continue;
2392             }
2393             break;
2394         }
2395
2396         /* read a frame from it and output it in the fifo */
2397         is = input_files[file_index].ctx;
2398         ret= av_read_frame(is, &pkt);
2399         if(ret == AVERROR(EAGAIN)){
2400             no_packet[file_index]=1;
2401             no_packet_count++;
2402             continue;
2403         }
2404         if (ret < 0) {
2405             input_files[file_index].eof_reached = 1;
2406             if (opt_shortest)
2407                 break;
2408             else
2409                 continue;
2410         }
2411
2412         no_packet_count=0;
2413         memset(no_packet, 0, nb_input_files);
2414
2415         if (do_pkt_dump) {
2416             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2417                              is->streams[pkt.stream_index]);
2418         }
2419         /* the following test is needed in case new streams appear
2420            dynamically in stream : we ignore them */
2421         if (pkt.stream_index >= input_files[file_index].nb_streams)
2422             goto discard_packet;
2423         ist_index = input_files[file_index].ist_index + pkt.stream_index;
2424         ist = &input_streams[ist_index];
2425         if (ist->discard)
2426             goto discard_packet;
2427
2428         if (pkt.dts != AV_NOPTS_VALUE)
2429             pkt.dts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2430         if (pkt.pts != AV_NOPTS_VALUE)
2431             pkt.pts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2432
2433         if(pkt.pts != AV_NOPTS_VALUE)
2434             pkt.pts *= ist->ts_scale;
2435         if(pkt.dts != AV_NOPTS_VALUE)
2436             pkt.dts *= ist->ts_scale;
2437
2438 //        fprintf(stderr, "next:%"PRId64" dts:%"PRId64" off:%"PRId64" %d\n", ist->next_pts, pkt.dts, input_files[ist->file_index].ts_offset, ist->st->codec->codec_type);
2439         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2440             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2441             int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2442             int64_t delta= pkt_dts - ist->next_pts;
2443             if((FFABS(delta) > 1LL*dts_delta_threshold*AV_TIME_BASE || pkt_dts+1<ist->pts)&& !copy_ts){
2444                 input_files[ist->file_index].ts_offset -= delta;
2445                 av_log(NULL, AV_LOG_DEBUG, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2446                        delta, input_files[ist->file_index].ts_offset);
2447                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2448                 if(pkt.pts != AV_NOPTS_VALUE)
2449                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2450             }
2451         }
2452
2453         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
2454         if (output_packet(ist, ist_index, output_streams, nb_output_streams, &pkt) < 0) {
2455
2456             av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d.%d\n",
2457                    ist->file_index, ist->st->index);
2458             if (exit_on_error)
2459                 exit_program(1);
2460             av_free_packet(&pkt);
2461             continue;
2462         }
2463
2464     discard_packet:
2465         av_free_packet(&pkt);
2466
2467         /* dump report by using the output first video and audio streams */
2468         print_report(output_files, output_streams, nb_output_streams, 0, timer_start);
2469     }
2470
2471     /* at the end of stream, we must flush the decoder buffers */
2472     for (i = 0; i < nb_input_streams; i++) {
2473         ist = &input_streams[i];
2474         if (ist->decoding_needed) {
2475             output_packet(ist, i, output_streams, nb_output_streams, NULL);
2476         }
2477     }
2478     flush_encoders(output_streams, nb_output_streams);
2479
2480     term_exit();
2481
2482     /* write the trailer if needed and close file */
2483     for(i=0;i<nb_output_files;i++) {
2484         os = output_files[i].ctx;
2485         av_write_trailer(os);
2486     }
2487
2488     /* dump report by using the first video and audio streams */
2489     print_report(output_files, output_streams, nb_output_streams, 1, timer_start);
2490
2491     /* close each encoder */
2492     for (i = 0; i < nb_output_streams; i++) {
2493         ost = &output_streams[i];
2494         if (ost->encoding_needed) {
2495             av_freep(&ost->st->codec->stats_in);
2496             avcodec_close(ost->st->codec);
2497         }
2498 #if CONFIG_AVFILTER
2499         avfilter_graph_free(&ost->graph);
2500 #endif
2501     }
2502
2503     /* close each decoder */
2504     for (i = 0; i < nb_input_streams; i++) {
2505         ist = &input_streams[i];
2506         if (ist->decoding_needed) {
2507             avcodec_close(ist->st->codec);
2508         }
2509     }
2510
2511     /* finished ! */
2512     ret = 0;
2513
2514  fail:
2515     av_freep(&bit_buffer);
2516     av_freep(&no_packet);
2517
2518     if (output_streams) {
2519         for (i = 0; i < nb_output_streams; i++) {
2520             ost = &output_streams[i];
2521             if (ost) {
2522                 if (ost->st->stream_copy)
2523                     av_freep(&ost->st->codec->extradata);
2524                 if (ost->logfile) {
2525                     fclose(ost->logfile);
2526                     ost->logfile = NULL;
2527                 }
2528                 av_fifo_free(ost->fifo); /* works even if fifo is not
2529                                              initialized but set to zero */
2530                 av_freep(&ost->st->codec->subtitle_header);
2531                 av_free(ost->pict_tmp.data[0]);
2532                 av_free(ost->forced_kf_pts);
2533                 if (ost->video_resample)
2534                     sws_freeContext(ost->img_resample_ctx);
2535                 if (ost->resample)
2536                     audio_resample_close(ost->resample);
2537                 if (ost->reformat_ctx)
2538                     av_audio_convert_free(ost->reformat_ctx);
2539                 av_dict_free(&ost->opts);
2540             }
2541         }
2542     }
2543     return ret;
2544 }
2545
2546 static int opt_verbose(const char *opt, const char *arg)
2547 {
2548     av_log(NULL, AV_LOG_WARNING, "-%s is deprecated, use -loglevel\n", opt);
2549     return 0;
2550 }
2551
2552 static double parse_frame_aspect_ratio(const char *arg)
2553 {
2554     int x = 0, y = 0;
2555     double ar = 0;
2556     const char *p;
2557     char *end;
2558
2559     p = strchr(arg, ':');
2560     if (p) {
2561         x = strtol(arg, &end, 10);
2562         if (end == p)
2563             y = strtol(end+1, &end, 10);
2564         if (x > 0 && y > 0)
2565             ar = (double)x / (double)y;
2566     } else
2567         ar = strtod(arg, NULL);
2568
2569     if (!ar) {
2570         av_log(NULL, AV_LOG_FATAL, "Incorrect aspect ratio specification.\n");
2571         exit_program(1);
2572     }
2573     return ar;
2574 }
2575
2576 static int opt_audio_codec(OptionsContext *o, const char *opt, const char *arg)
2577 {
2578     return parse_option(o, "codec:a", arg, options);
2579 }
2580
2581 static int opt_video_codec(OptionsContext *o, const char *opt, const char *arg)
2582 {
2583     return parse_option(o, "codec:v", arg, options);
2584 }
2585
2586 static int opt_subtitle_codec(OptionsContext *o, const char *opt, const char *arg)
2587 {
2588     return parse_option(o, "codec:s", arg, options);
2589 }
2590
2591 static int opt_data_codec(OptionsContext *o, const char *opt, const char *arg)
2592 {
2593     return parse_option(o, "codec:d", arg, options);
2594 }
2595
2596 static int opt_map(OptionsContext *o, const char *opt, const char *arg)
2597 {
2598     StreamMap *m = NULL;
2599     int i, negative = 0, file_idx;
2600     int sync_file_idx = -1, sync_stream_idx;
2601     char *p, *sync;
2602     char *map;
2603
2604     if (*arg == '-') {
2605         negative = 1;
2606         arg++;
2607     }
2608     map = av_strdup(arg);
2609
2610     /* parse sync stream first, just pick first matching stream */
2611     if (sync = strchr(map, ',')) {
2612         *sync = 0;
2613         sync_file_idx = strtol(sync + 1, &sync, 0);
2614         if (sync_file_idx >= nb_input_files || sync_file_idx < 0) {
2615             av_log(NULL, AV_LOG_FATAL, "Invalid sync file index: %d.\n", sync_file_idx);
2616             exit_program(1);
2617         }
2618         if (*sync)
2619             sync++;
2620         for (i = 0; i < input_files[sync_file_idx].nb_streams; i++)
2621             if (check_stream_specifier(input_files[sync_file_idx].ctx,
2622                                        input_files[sync_file_idx].ctx->streams[i], sync) == 1) {
2623                 sync_stream_idx = i;
2624                 break;
2625             }
2626         if (i == input_files[sync_file_idx].nb_streams) {
2627             av_log(NULL, AV_LOG_FATAL, "Sync stream specification in map %s does not "
2628                                        "match any streams.\n", arg);
2629             exit_program(1);
2630         }
2631     }
2632
2633
2634     file_idx = strtol(map, &p, 0);
2635     if (file_idx >= nb_input_files || file_idx < 0) {
2636         av_log(NULL, AV_LOG_FATAL, "Invalid input file index: %d.\n", file_idx);
2637         exit_program(1);
2638     }
2639     if (negative)
2640         /* disable some already defined maps */
2641         for (i = 0; i < o->nb_stream_maps; i++) {
2642             m = &o->stream_maps[i];
2643             if (check_stream_specifier(input_files[m->file_index].ctx,
2644                                        input_files[m->file_index].ctx->streams[m->stream_index],
2645                                        *p == ':' ? p + 1 : p) > 0)
2646                 m->disabled = 1;
2647         }
2648     else
2649         for (i = 0; i < input_files[file_idx].nb_streams; i++) {
2650             if (check_stream_specifier(input_files[file_idx].ctx, input_files[file_idx].ctx->streams[i],
2651                         *p == ':' ? p + 1 : p) <= 0)
2652                 continue;
2653             o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
2654                                         &o->nb_stream_maps, o->nb_stream_maps + 1);
2655             m = &o->stream_maps[o->nb_stream_maps - 1];
2656
2657             m->file_index   = file_idx;
2658             m->stream_index = i;
2659
2660             if (sync_file_idx >= 0) {
2661                 m->sync_file_index   = sync_file_idx;
2662                 m->sync_stream_index = sync_stream_idx;
2663             } else {
2664                 m->sync_file_index   = file_idx;
2665                 m->sync_stream_index = i;
2666             }
2667         }
2668
2669     if (!m) {
2670         av_log(NULL, AV_LOG_FATAL, "Stream map '%s' matches no streams.\n", arg);
2671         exit_program(1);
2672     }
2673
2674     av_freep(&map);
2675     return 0;
2676 }
2677
2678 static void parse_meta_type(char *arg, char *type, int *index)
2679 {
2680     if (*arg) {
2681         *type = *arg;
2682         switch (*arg) {
2683         case 'g':
2684             break;
2685         case 's':
2686         case 'c':
2687         case 'p':
2688             if (*(++arg) == ':')
2689                 *index = strtol(++arg, NULL, 0);
2690             break;
2691         default:
2692             av_log(NULL, AV_LOG_FATAL, "Invalid metadata type %c.\n", *arg);
2693             exit_program(1);
2694         }
2695     } else
2696         *type = 'g';
2697 }
2698
2699 static int opt_map_metadata(OptionsContext *o, const char *opt, const char *arg)
2700 {
2701     MetadataMap *m, *m1;
2702     char *p;
2703
2704     o->meta_data_maps = grow_array(o->meta_data_maps, sizeof(*o->meta_data_maps),
2705                                    &o->nb_meta_data_maps, o->nb_meta_data_maps + 1);
2706
2707     m = &o->meta_data_maps[o->nb_meta_data_maps - 1][1];
2708     m->file = strtol(arg, &p, 0);
2709     parse_meta_type(*p ? p + 1 : p, &m->type, &m->index);
2710
2711     m1 = &o->meta_data_maps[o->nb_meta_data_maps - 1][0];
2712     if (p = strchr(opt, ':'))
2713         parse_meta_type(p + 1, &m1->type, &m1->index);
2714     else
2715         m1->type = 'g';
2716
2717     if (m->type == 'g' || m1->type == 'g')
2718         o->metadata_global_manual = 1;
2719     if (m->type == 's' || m1->type == 's')
2720         o->metadata_streams_manual = 1;
2721     if (m->type == 'c' || m1->type == 'c')
2722         o->metadata_chapters_manual = 1;
2723
2724     return 0;
2725 }
2726
2727 static enum CodecID find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
2728 {
2729     const char *codec_string = encoder ? "encoder" : "decoder";
2730     AVCodec *codec;
2731
2732     if(!name)
2733         return CODEC_ID_NONE;
2734     codec = encoder ?
2735         avcodec_find_encoder_by_name(name) :
2736         avcodec_find_decoder_by_name(name);
2737     if(!codec) {
2738         av_log(NULL, AV_LOG_FATAL, "Unknown %s '%s'\n", codec_string, name);
2739         exit_program(1);
2740     }
2741     if(codec->type != type) {
2742         av_log(NULL, AV_LOG_FATAL, "Invalid %s type '%s'\n", codec_string, name);
2743         exit_program(1);
2744     }
2745     return codec->id;
2746 }
2747
2748 static AVCodec *choose_codec(OptionsContext *o, AVFormatContext *s, AVStream *st, enum AVMediaType type)
2749 {
2750     char *codec_name = NULL;
2751
2752     MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, st);
2753
2754     if (!codec_name) {
2755         if (s->oformat) {
2756             st->codec->codec_id = av_guess_codec(s->oformat, NULL, s->filename, NULL, type);
2757             return avcodec_find_encoder(st->codec->codec_id);
2758         }
2759     } else if (!strcmp(codec_name, "copy"))
2760         st->stream_copy = 1;
2761     else {
2762         st->codec->codec_id = find_codec_or_die(codec_name, type, s->iformat == NULL);
2763         return s->oformat ? avcodec_find_encoder_by_name(codec_name) :
2764                             avcodec_find_decoder_by_name(codec_name);
2765     }
2766
2767     return NULL;
2768 }
2769
2770 /**
2771  * Add all the streams from the given input file to the global
2772  * list of input streams.
2773  */
2774 static void add_input_streams(OptionsContext *o, AVFormatContext *ic)
2775 {
2776     int i, rfps, rfps_base;
2777
2778     for (i = 0; i < ic->nb_streams; i++) {
2779         AVStream *st = ic->streams[i];
2780         AVCodecContext *dec = st->codec;
2781         InputStream *ist;
2782         double scale = 1.0;
2783
2784         input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
2785         ist = &input_streams[nb_input_streams - 1];
2786         ist->st = st;
2787         ist->file_index = nb_input_files;
2788         ist->discard = 1;
2789         ist->opts = filter_codec_opts(codec_opts, ist->st->codec->codec_id, ic, st);
2790
2791         MATCH_PER_STREAM_OPT(ts_scale, dbl, scale, ic, st);
2792         ist->ts_scale = scale;
2793
2794         ist->dec = choose_codec(o, ic, st, dec->codec_type);
2795         if (!ist->dec)
2796             ist->dec = avcodec_find_decoder(dec->codec_id);
2797
2798         switch (dec->codec_type) {
2799         case AVMEDIA_TYPE_AUDIO:
2800             if (o->audio_disable)
2801                 st->discard= AVDISCARD_ALL;
2802             break;
2803         case AVMEDIA_TYPE_VIDEO:
2804             rfps      = ic->streams[i]->r_frame_rate.num;
2805             rfps_base = ic->streams[i]->r_frame_rate.den;
2806             if (dec->lowres) {
2807                 dec->flags |= CODEC_FLAG_EMU_EDGE;
2808                 dec->height >>= dec->lowres;
2809                 dec->width  >>= dec->lowres;
2810             }
2811
2812             if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
2813
2814                 av_log(NULL, AV_LOG_INFO,"\nSeems stream %d codec frame rate differs from container frame rate: %2.2f (%d/%d) -> %2.2f (%d/%d)\n",
2815                        i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
2816                        (float)rfps / rfps_base, rfps, rfps_base);
2817             }
2818
2819             if (o->video_disable)
2820                 st->discard= AVDISCARD_ALL;
2821             else if(video_discard)
2822                 st->discard= video_discard;
2823             break;
2824         case AVMEDIA_TYPE_DATA:
2825             break;
2826         case AVMEDIA_TYPE_SUBTITLE:
2827             if (o->subtitle_disable)
2828                 st->discard = AVDISCARD_ALL;
2829             break;
2830         case AVMEDIA_TYPE_ATTACHMENT:
2831         case AVMEDIA_TYPE_UNKNOWN:
2832             break;
2833         default:
2834             abort();
2835         }
2836     }
2837 }
2838
2839 static int opt_input_file(OptionsContext *o, const char *opt, const char *filename)
2840 {
2841     AVFormatContext *ic;
2842     AVInputFormat *file_iformat = NULL;
2843     int err, i, ret;
2844     int64_t timestamp;
2845     uint8_t buf[128];
2846     AVDictionary **opts;
2847     int orig_nb_streams;                     // number of streams before avformat_find_stream_info
2848
2849     if (o->format) {
2850         if (!(file_iformat = av_find_input_format(o->format))) {
2851             av_log(NULL, AV_LOG_FATAL, "Unknown input format: '%s'\n", o->format);
2852             exit_program(1);
2853         }
2854     }
2855
2856     if (!strcmp(filename, "-"))
2857         filename = "pipe:";
2858
2859     using_stdin |= !strncmp(filename, "pipe:", 5) ||
2860                     !strcmp(filename, "/dev/stdin");
2861
2862     /* get default parameters from command line */
2863     ic = avformat_alloc_context();
2864     if (!ic) {
2865         print_error(filename, AVERROR(ENOMEM));
2866         exit_program(1);
2867     }
2868     if (o->nb_audio_sample_rate) {
2869         snprintf(buf, sizeof(buf), "%d", o->audio_sample_rate[o->nb_audio_sample_rate - 1].u.i);
2870         av_dict_set(&format_opts, "sample_rate", buf, 0);
2871     }
2872     if (o->nb_audio_channels) {
2873         snprintf(buf, sizeof(buf), "%d", o->audio_channels[o->nb_audio_channels - 1].u.i);
2874         av_dict_set(&format_opts, "channels", buf, 0);
2875     }
2876     if (o->nb_frame_rates) {
2877         av_dict_set(&format_opts, "framerate", o->frame_rates[o->nb_frame_rates - 1].u.str, 0);
2878     }
2879     if (o->nb_frame_sizes) {
2880         av_dict_set(&format_opts, "video_size", o->frame_sizes[o->nb_frame_sizes - 1].u.str, 0);
2881     }
2882     if (o->nb_frame_pix_fmts)
2883         av_dict_set(&format_opts, "pixel_format", o->frame_pix_fmts[o->nb_frame_pix_fmts - 1].u.str, 0);
2884
2885     ic->flags |= AVFMT_FLAG_NONBLOCK;
2886
2887     /* open the input file with generic libav function */
2888     err = avformat_open_input(&ic, filename, file_iformat, &format_opts);
2889     if (err < 0) {
2890         print_error(filename, err);
2891         exit_program(1);
2892     }
2893     assert_avoptions(format_opts);
2894
2895     /* apply forced codec ids */
2896     for (i = 0; i < ic->nb_streams; i++)
2897         choose_codec(o, ic, ic->streams[i], ic->streams[i]->codec->codec_type);
2898
2899     /* Set AVCodecContext options for avformat_find_stream_info */
2900     opts = setup_find_stream_info_opts(ic, codec_opts);
2901     orig_nb_streams = ic->nb_streams;
2902
2903     /* If not enough info to get the stream parameters, we decode the
2904        first frames to get it. (used in mpeg case for example) */
2905     ret = avformat_find_stream_info(ic, opts);
2906     if (ret < 0) {
2907         av_log(NULL, AV_LOG_FATAL, "%s: could not find codec parameters\n", filename);
2908         av_close_input_file(ic);
2909         exit_program(1);
2910     }
2911
2912     timestamp = o->start_time;
2913     /* add the stream start time */
2914     if (ic->start_time != AV_NOPTS_VALUE)
2915         timestamp += ic->start_time;
2916
2917     /* if seeking requested, we execute it */
2918     if (o->start_time != 0) {
2919         ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
2920         if (ret < 0) {
2921             av_log(NULL, AV_LOG_WARNING, "%s: could not seek to position %0.3f\n",
2922                    filename, (double)timestamp / AV_TIME_BASE);
2923         }
2924     }
2925
2926     /* update the current parameters so that they match the one of the input stream */
2927     add_input_streams(o, ic);
2928
2929     /* dump the file content */
2930     av_dump_format(ic, nb_input_files, filename, 0);
2931
2932     input_files = grow_array(input_files, sizeof(*input_files), &nb_input_files, nb_input_files + 1);
2933     input_files[nb_input_files - 1].ctx        = ic;
2934     input_files[nb_input_files - 1].ist_index  = nb_input_streams - ic->nb_streams;
2935     input_files[nb_input_files - 1].ts_offset  = o->input_ts_offset - (copy_ts ? 0 : timestamp);
2936     input_files[nb_input_files - 1].nb_streams = ic->nb_streams;
2937     input_files[nb_input_files - 1].rate_emu   = o->rate_emu;
2938
2939     for (i = 0; i < orig_nb_streams; i++)
2940         av_dict_free(&opts[i]);
2941     av_freep(&opts);
2942
2943     reset_options(o);
2944     return 0;
2945 }
2946
2947 static void parse_forced_key_frames(char *kf, OutputStream *ost,
2948                                     AVCodecContext *avctx)
2949 {
2950     char *p;
2951     int n = 1, i;
2952     int64_t t;
2953
2954     for (p = kf; *p; p++)
2955         if (*p == ',')
2956             n++;
2957     ost->forced_kf_count = n;
2958     ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
2959     if (!ost->forced_kf_pts) {
2960         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
2961         exit_program(1);
2962     }
2963     for (i = 0; i < n; i++) {
2964         p = i ? strchr(p, ',') + 1 : kf;
2965         t = parse_time_or_die("force_key_frames", p, 1);
2966         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
2967     }
2968 }
2969
2970 static OutputStream *new_output_stream(OptionsContext *o, AVFormatContext *oc, enum AVMediaType type)
2971 {
2972     OutputStream *ost;
2973     AVStream *st = av_new_stream(oc, oc->nb_streams < o->nb_streamid_map ? o->streamid_map[oc->nb_streams] : 0);
2974     int idx      = oc->nb_streams - 1;
2975     int64_t max_frames = INT64_MAX;
2976     char *bsf = NULL, *next, *codec_tag = NULL;
2977     AVBitStreamFilterContext *bsfc, *bsfc_prev = NULL;
2978     double qscale = -1;
2979
2980     if (!st) {
2981         av_log(NULL, AV_LOG_FATAL, "Could not alloc stream.\n");
2982         exit_program(1);
2983     }
2984
2985     output_streams = grow_array(output_streams, sizeof(*output_streams), &nb_output_streams,
2986                                 nb_output_streams + 1);
2987     ost = &output_streams[nb_output_streams - 1];
2988     ost->file_index = nb_output_files;
2989     ost->index = idx;
2990     ost->st    = st;
2991     st->codec->codec_type = type;
2992     ost->enc = choose_codec(o, oc, st, type);
2993     if (ost->enc) {
2994         ost->opts  = filter_codec_opts(codec_opts, ost->enc->id, oc, st);
2995     }
2996
2997     avcodec_get_context_defaults3(st->codec, ost->enc);
2998     st->codec->codec_type = type; // XXX hack, avcodec_get_context_defaults2() sets type to unknown for stream copy
2999
3000     MATCH_PER_STREAM_OPT(max_frames, i64, max_frames, oc, st);
3001     ost->max_frames = max_frames;
3002
3003     MATCH_PER_STREAM_OPT(bitstream_filters, str, bsf, oc, st);
3004     while (bsf) {
3005         if (next = strchr(bsf, ','))
3006             *next++ = 0;
3007         if (!(bsfc = av_bitstream_filter_init(bsf))) {
3008             av_log(NULL, AV_LOG_FATAL, "Unknown bitstream filter %s\n", bsf);
3009             exit_program(1);
3010         }
3011         if (bsfc_prev)
3012             bsfc_prev->next = bsfc;
3013         else
3014             ost->bitstream_filters = bsfc;
3015
3016         bsfc_prev = bsfc;
3017         bsf       = next;
3018     }
3019
3020     MATCH_PER_STREAM_OPT(codec_tags, str, codec_tag, oc, st);
3021     if (codec_tag) {
3022         uint32_t tag = strtol(codec_tag, &next, 0);
3023         if (*next)
3024             tag = AV_RL32(codec_tag);
3025         st->codec->codec_tag = tag;
3026     }
3027
3028     MATCH_PER_STREAM_OPT(qscale, dbl, qscale, oc, st);
3029     if (qscale >= 0 || same_quant) {
3030         st->codec->flags |= CODEC_FLAG_QSCALE;
3031         st->codec->global_quality = FF_QP2LAMBDA * qscale;
3032     }
3033
3034     if (oc->oformat->flags & AVFMT_GLOBALHEADER)
3035         st->codec->flags |= CODEC_FLAG_GLOBAL_HEADER;
3036
3037     ost->sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
3038     return ost;
3039 }
3040
3041 static void parse_matrix_coeffs(uint16_t *dest, const char *str)
3042 {
3043     int i;
3044     const char *p = str;
3045     for(i = 0;; i++) {
3046         dest[i] = atoi(p);
3047         if(i == 63)
3048             break;
3049         p = strchr(p, ',');
3050         if(!p) {
3051             av_log(NULL, AV_LOG_FATAL, "Syntax error in matrix \"%s\" at coeff %d\n", str, i);
3052             exit_program(1);
3053         }
3054         p++;
3055     }
3056 }
3057
3058 static OutputStream *new_video_stream(OptionsContext *o, AVFormatContext *oc)
3059 {
3060     AVStream *st;
3061     OutputStream *ost;
3062     AVCodecContext *video_enc;
3063
3064     ost = new_output_stream(o, oc, AVMEDIA_TYPE_VIDEO);
3065     st  = ost->st;
3066     video_enc = st->codec;
3067
3068     if (!st->stream_copy) {
3069         const char *p = NULL;
3070         char *forced_key_frames = NULL, *frame_rate = NULL, *frame_size = NULL;
3071         char *frame_aspect_ratio = NULL, *frame_pix_fmt = NULL;
3072         char *intra_matrix = NULL, *inter_matrix = NULL, *filters = NULL;
3073         int i, force_fps = 0, top_field_first = -1;
3074
3075         MATCH_PER_STREAM_OPT(frame_rates, str, frame_rate, oc, st);
3076         if (frame_rate && av_parse_video_rate(&ost->frame_rate, frame_rate) < 0) {
3077             av_log(NULL, AV_LOG_FATAL, "Invalid framerate value: %s\n", frame_rate);
3078             exit_program(1);
3079         }
3080
3081         MATCH_PER_STREAM_OPT(frame_sizes, str, frame_size, oc, st);
3082         if (frame_size && av_parse_video_size(&video_enc->width, &video_enc->height, frame_size) < 0) {
3083             av_log(NULL, AV_LOG_FATAL, "Invalid frame size: %s.\n", frame_size);
3084             exit_program(1);
3085         }
3086
3087         MATCH_PER_STREAM_OPT(frame_aspect_ratios, str, frame_aspect_ratio, oc, st);
3088         if (frame_aspect_ratio)
3089             ost->frame_aspect_ratio = parse_frame_aspect_ratio(frame_aspect_ratio);
3090
3091         MATCH_PER_STREAM_OPT(frame_pix_fmts, str, frame_pix_fmt, oc, st);
3092         if (frame_pix_fmt && (video_enc->pix_fmt = av_get_pix_fmt(frame_pix_fmt)) == PIX_FMT_NONE) {
3093             av_log(NULL, AV_LOG_FATAL, "Unknown pixel format requested: %s.\n", frame_pix_fmt);
3094             exit_program(1);
3095         }
3096         st->sample_aspect_ratio = video_enc->sample_aspect_ratio;
3097
3098         MATCH_PER_STREAM_OPT(intra_matrices, str, intra_matrix, oc, st);
3099         if (intra_matrix) {
3100             if (!(video_enc->intra_matrix = av_mallocz(sizeof(*video_enc->intra_matrix) * 64))) {
3101                 av_log(NULL, AV_LOG_FATAL, "Could not allocate memory for intra matrix.\n");
3102                 exit_program(1);
3103             }
3104             parse_matrix_coeffs(video_enc->intra_matrix, intra_matrix);
3105         }
3106         MATCH_PER_STREAM_OPT(inter_matrices, str, inter_matrix, oc, st);
3107         if (inter_matrix) {
3108             if (!(video_enc->inter_matrix = av_mallocz(sizeof(*video_enc->inter_matrix) * 64))) {
3109                 av_log(NULL, AV_LOG_FATAL, "Could not allocate memory for inter matrix.\n");
3110                 exit_program(1);
3111             }
3112             parse_matrix_coeffs(video_enc->inter_matrix, inter_matrix);
3113         }
3114
3115         MATCH_PER_STREAM_OPT(rc_overrides, str, p, oc, st);
3116         for(i=0; p; i++){
3117             int start, end, q;
3118             int e=sscanf(p, "%d,%d,%d", &start, &end, &q);
3119             if(e!=3){
3120                 av_log(NULL, AV_LOG_FATAL, "error parsing rc_override\n");
3121                 exit_program(1);
3122             }
3123             video_enc->rc_override=
3124                 av_realloc(video_enc->rc_override,
3125                            sizeof(RcOverride)*(i+1));
3126             video_enc->rc_override[i].start_frame= start;
3127             video_enc->rc_override[i].end_frame  = end;
3128             if(q>0){
3129                 video_enc->rc_override[i].qscale= q;
3130                 video_enc->rc_override[i].quality_factor= 1.0;
3131             }
3132             else{
3133                 video_enc->rc_override[i].qscale= 0;
3134                 video_enc->rc_override[i].quality_factor= -q/100.0;
3135             }
3136             p= strchr(p, '/');
3137             if(p) p++;
3138         }
3139         video_enc->rc_override_count=i;
3140         if (!video_enc->rc_initial_buffer_occupancy)
3141             video_enc->rc_initial_buffer_occupancy = video_enc->rc_buffer_size*3/4;
3142         video_enc->intra_dc_precision= intra_dc_precision - 8;
3143
3144         /* two pass mode */
3145         if (do_pass) {
3146             if (do_pass == 1) {
3147                 video_enc->flags |= CODEC_FLAG_PASS1;
3148             } else {
3149                 video_enc->flags |= CODEC_FLAG_PASS2;
3150             }
3151         }
3152
3153         MATCH_PER_STREAM_OPT(forced_key_frames, str, forced_key_frames, oc, st);
3154         if (forced_key_frames)
3155             parse_forced_key_frames(forced_key_frames, ost, video_enc);
3156
3157         MATCH_PER_STREAM_OPT(force_fps, i, force_fps, oc, st);
3158         ost->force_fps = force_fps;
3159
3160         MATCH_PER_STREAM_OPT(top_field_first, i, top_field_first, oc, st);
3161         ost->top_field_first = top_field_first;
3162
3163 #if CONFIG_AVFILTER
3164         MATCH_PER_STREAM_OPT(filters, str, filters, oc, st);
3165         if (filters)
3166             ost->avfilter = av_strdup(filters);
3167 #endif
3168     }
3169
3170     return ost;
3171 }
3172
3173 static OutputStream *new_audio_stream(OptionsContext *o, AVFormatContext *oc)
3174 {
3175     AVStream *st;
3176     OutputStream *ost;
3177     AVCodecContext *audio_enc;
3178
3179     ost = new_output_stream(o, oc, AVMEDIA_TYPE_AUDIO);
3180     st  = ost->st;
3181
3182     audio_enc = st->codec;
3183     audio_enc->codec_type = AVMEDIA_TYPE_AUDIO;
3184
3185     if (!st->stream_copy) {
3186         char *sample_fmt = NULL;
3187
3188         MATCH_PER_STREAM_OPT(audio_channels, i, audio_enc->channels, oc, st);
3189
3190         MATCH_PER_STREAM_OPT(sample_fmts, str, sample_fmt, oc, st);
3191         if (sample_fmt &&
3192             (audio_enc->sample_fmt = av_get_sample_fmt(sample_fmt)) == AV_SAMPLE_FMT_NONE) {
3193             av_log(NULL, AV_LOG_FATAL, "Invalid sample format '%s'\n", sample_fmt);
3194             exit_program(1);
3195         }
3196
3197         MATCH_PER_STREAM_OPT(audio_sample_rate, i, audio_enc->sample_rate, oc, st);
3198     }
3199
3200     return ost;
3201 }
3202
3203 static OutputStream *new_data_stream(OptionsContext *o, AVFormatContext *oc)
3204 {
3205     AVStream *st;
3206     OutputStream *ost;
3207
3208     ost = new_output_stream(o, oc, AVMEDIA_TYPE_DATA);
3209     st  = ost->st;
3210     if (!st->stream_copy) {
3211         av_log(NULL, AV_LOG_FATAL, "Data stream encoding not supported yet (only streamcopy)\n");
3212         exit_program(1);
3213     }
3214
3215     return ost;
3216 }
3217
3218 static OutputStream *new_attachment_stream(OptionsContext *o, AVFormatContext *oc)
3219 {
3220     OutputStream *ost = new_output_stream(o, oc, AVMEDIA_TYPE_ATTACHMENT);
3221     ost->st->stream_copy = 1;
3222     return ost;
3223 }
3224
3225 static OutputStream *new_subtitle_stream(OptionsContext *o, AVFormatContext *oc)
3226 {
3227     AVStream *st;
3228     OutputStream *ost;
3229     AVCodecContext *subtitle_enc;
3230
3231     ost = new_output_stream(o, oc, AVMEDIA_TYPE_SUBTITLE);
3232     st  = ost->st;
3233     subtitle_enc = st->codec;
3234
3235     subtitle_enc->codec_type = AVMEDIA_TYPE_SUBTITLE;
3236
3237     return ost;
3238 }
3239
3240 /* arg format is "output-stream-index:streamid-value". */
3241 static int opt_streamid(OptionsContext *o, const char *opt, const char *arg)
3242 {
3243     int idx;
3244     char *p;
3245     char idx_str[16];
3246
3247     av_strlcpy(idx_str, arg, sizeof(idx_str));
3248     p = strchr(idx_str, ':');
3249     if (!p) {
3250         av_log(NULL, AV_LOG_FATAL,
3251                "Invalid value '%s' for option '%s', required syntax is 'index:value'\n",
3252                arg, opt);
3253         exit_program(1);
3254     }
3255     *p++ = '\0';
3256     idx = parse_number_or_die(opt, idx_str, OPT_INT, 0, INT_MAX);
3257     o->streamid_map = grow_array(o->streamid_map, sizeof(*o->streamid_map), &o->nb_streamid_map, idx+1);
3258     o->streamid_map[idx] = parse_number_or_die(opt, p, OPT_INT, 0, INT_MAX);
3259     return 0;
3260 }
3261
3262 static int copy_chapters(InputFile *ifile, OutputFile *ofile, int copy_metadata)
3263 {
3264     AVFormatContext *is = ifile->ctx;
3265     AVFormatContext *os = ofile->ctx;
3266     int i;
3267
3268     for (i = 0; i < is->nb_chapters; i++) {
3269         AVChapter *in_ch = is->chapters[i], *out_ch;
3270         int64_t ts_off   = av_rescale_q(ofile->start_time - ifile->ts_offset,
3271                                       AV_TIME_BASE_Q, in_ch->time_base);
3272         int64_t rt       = (ofile->recording_time == INT64_MAX) ? INT64_MAX :
3273                            av_rescale_q(ofile->recording_time, AV_TIME_BASE_Q, in_ch->time_base);
3274
3275
3276         if (in_ch->end < ts_off)
3277             continue;
3278         if (rt != INT64_MAX && in_ch->start > rt + ts_off)
3279             break;
3280
3281         out_ch = av_mallocz(sizeof(AVChapter));
3282         if (!out_ch)
3283             return AVERROR(ENOMEM);
3284
3285         out_ch->id        = in_ch->id;
3286         out_ch->time_base = in_ch->time_base;
3287         out_ch->start     = FFMAX(0,  in_ch->start - ts_off);
3288         out_ch->end       = FFMIN(rt, in_ch->end   - ts_off);
3289
3290         if (copy_metadata)
3291             av_dict_copy(&out_ch->metadata, in_ch->metadata, 0);
3292
3293         os->nb_chapters++;
3294         os->chapters = av_realloc(os->chapters, sizeof(AVChapter)*os->nb_chapters);
3295         if (!os->chapters)
3296             return AVERROR(ENOMEM);
3297         os->chapters[os->nb_chapters - 1] = out_ch;
3298     }
3299     return 0;
3300 }
3301
3302 static int read_avserver_streams(OptionsContext *o, AVFormatContext *s, const char *filename)
3303 {
3304     int i, err;
3305     AVFormatContext *ic = NULL;
3306
3307     err = avformat_open_input(&ic, filename, NULL, NULL);
3308     if (err < 0)
3309         return err;
3310     /* copy stream format */
3311     for(i=0;i<ic->nb_streams;i++) {
3312         AVStream *st;
3313         OutputStream *ost;
3314         AVCodec *codec;
3315
3316         codec = avcodec_find_encoder(ic->streams[i]->codec->codec_id);
3317         ost   = new_output_stream(o, s, codec->type);
3318         st    = ost->st;
3319
3320         // FIXME: a more elegant solution is needed
3321         memcpy(st, ic->streams[i], sizeof(AVStream));
3322         st->info = NULL;
3323         avcodec_copy_context(st->codec, ic->streams[i]->codec);
3324
3325         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO && !st->stream_copy)
3326             choose_sample_fmt(st, codec);
3327         else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && !st->stream_copy)
3328             choose_pixel_fmt(st, codec);
3329     }
3330
3331     av_close_input_file(ic);
3332     return 0;
3333 }
3334
3335 static void opt_output_file(void *optctx, const char *filename)
3336 {
3337     OptionsContext *o = optctx;
3338     AVFormatContext *oc;
3339     int i, err;
3340     AVOutputFormat *file_oformat;
3341     OutputStream *ost;
3342     InputStream  *ist;
3343
3344     if (!strcmp(filename, "-"))
3345         filename = "pipe:";
3346
3347     oc = avformat_alloc_context();
3348     if (!oc) {
3349         print_error(filename, AVERROR(ENOMEM));
3350         exit_program(1);
3351     }
3352
3353     if (o->format) {
3354         file_oformat = av_guess_format(o->format, NULL, NULL);
3355         if (!file_oformat) {
3356             av_log(NULL, AV_LOG_FATAL, "Requested output format '%s' is not a suitable output format\n", o->format);
3357             exit_program(1);
3358         }
3359     } else {
3360         file_oformat = av_guess_format(NULL, filename, NULL);
3361         if (!file_oformat) {
3362             av_log(NULL, AV_LOG_FATAL, "Unable to find a suitable output format for '%s'\n",
3363                    filename);
3364             exit_program(1);
3365         }
3366     }
3367
3368     oc->oformat = file_oformat;
3369     av_strlcpy(oc->filename, filename, sizeof(oc->filename));
3370
3371     if (!strcmp(file_oformat->name, "ffm") &&
3372         av_strstart(filename, "http:", NULL)) {
3373         /* special case for files sent to avserver: we get the stream
3374            parameters from avserver */
3375         int err = read_avserver_streams(o, oc, filename);
3376         if (err < 0) {
3377             print_error(filename, err);
3378             exit_program(1);
3379         }
3380     } else if (!o->nb_stream_maps) {
3381         /* pick the "best" stream of each type */
3382 #define NEW_STREAM(type, index)\
3383         if (index >= 0) {\
3384             ost = new_ ## type ## _stream(o, oc);\
3385             ost->source_index = index;\
3386             ost->sync_ist     = &input_streams[index];\
3387             input_streams[index].discard = 0;\
3388         }
3389
3390         /* video: highest resolution */
3391         if (!o->video_disable && oc->oformat->video_codec != CODEC_ID_NONE) {
3392             int area = 0, idx = -1;
3393             for (i = 0; i < nb_input_streams; i++) {
3394                 ist = &input_streams[i];
3395                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
3396                     ist->st->codec->width * ist->st->codec->height > area) {
3397                     area = ist->st->codec->width * ist->st->codec->height;
3398                     idx = i;
3399                 }
3400             }
3401             NEW_STREAM(video, idx);
3402         }
3403
3404         /* audio: most channels */
3405         if (!o->audio_disable && oc->oformat->audio_codec != CODEC_ID_NONE) {
3406             int channels = 0, idx = -1;
3407             for (i = 0; i < nb_input_streams; i++) {
3408                 ist = &input_streams[i];
3409                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
3410                     ist->st->codec->channels > channels) {
3411                     channels = ist->st->codec->channels;
3412                     idx = i;
3413                 }
3414             }
3415             NEW_STREAM(audio, idx);
3416         }
3417
3418         /* subtitles: pick first */
3419         if (!o->subtitle_disable && oc->oformat->subtitle_codec != CODEC_ID_NONE) {
3420             for (i = 0; i < nb_input_streams; i++)
3421                 if (input_streams[i].st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3422                     NEW_STREAM(subtitle, i);
3423                     break;
3424                 }
3425         }
3426         /* do something with data? */
3427     } else {
3428         for (i = 0; i < o->nb_stream_maps; i++) {
3429             StreamMap *map = &o->stream_maps[i];
3430
3431             if (map->disabled)
3432                 continue;
3433
3434             ist = &input_streams[input_files[map->file_index].ist_index + map->stream_index];
3435             switch (ist->st->codec->codec_type) {
3436             case AVMEDIA_TYPE_VIDEO:    ost = new_video_stream(o, oc);    break;
3437             case AVMEDIA_TYPE_AUDIO:    ost = new_audio_stream(o, oc);    break;
3438             case AVMEDIA_TYPE_SUBTITLE: ost = new_subtitle_stream(o, oc); break;
3439             case AVMEDIA_TYPE_DATA:     ost = new_data_stream(o, oc);     break;
3440             case AVMEDIA_TYPE_ATTACHMENT: ost = new_attachment_stream(o, oc); break;
3441             default:
3442                 av_log(NULL, AV_LOG_FATAL, "Cannot map stream #%d.%d - unsupported type.\n",
3443                        map->file_index, map->stream_index);
3444                 exit_program(1);
3445             }
3446
3447             ost->source_index = input_files[map->file_index].ist_index + map->stream_index;
3448             ost->sync_ist = &input_streams[input_files[map->sync_file_index].ist_index +
3449                                            map->sync_stream_index];
3450             ist->discard = 0;
3451         }
3452     }
3453
3454     output_files = grow_array(output_files, sizeof(*output_files), &nb_output_files, nb_output_files + 1);
3455     output_files[nb_output_files - 1].ctx       = oc;
3456     output_files[nb_output_files - 1].ost_index = nb_output_streams - oc->nb_streams;
3457     output_files[nb_output_files - 1].recording_time = o->recording_time;
3458     output_files[nb_output_files - 1].start_time     = o->start_time;
3459     output_files[nb_output_files - 1].limit_filesize = o->limit_filesize;
3460     av_dict_copy(&output_files[nb_output_files - 1].opts, format_opts, 0);
3461
3462     /* check filename in case of an image number is expected */
3463     if (oc->oformat->flags & AVFMT_NEEDNUMBER) {
3464         if (!av_filename_number_test(oc->filename)) {
3465             print_error(oc->filename, AVERROR(EINVAL));
3466             exit_program(1);
3467         }
3468     }
3469
3470     if (!(oc->oformat->flags & AVFMT_NOFILE)) {
3471         /* test if it already exists to avoid loosing precious files */
3472         if (!file_overwrite &&
3473             (strchr(filename, ':') == NULL ||
3474              filename[1] == ':' ||
3475              av_strstart(filename, "file:", NULL))) {
3476             if (avio_check(filename, 0) == 0) {
3477                 if (!using_stdin) {
3478                     fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
3479                     fflush(stderr);
3480                     if (!read_yesno()) {
3481                         fprintf(stderr, "Not overwriting - exiting\n");
3482                         exit_program(1);
3483                     }
3484                 }
3485                 else {
3486                     fprintf(stderr,"File '%s' already exists. Exiting.\n", filename);
3487                     exit_program(1);
3488                 }
3489             }
3490         }
3491
3492         /* open the file */
3493         if ((err = avio_open(&oc->pb, filename, AVIO_FLAG_WRITE)) < 0) {
3494             print_error(filename, err);
3495             exit_program(1);
3496         }
3497     }
3498
3499     oc->preload   = (int)(o->mux_preload   * AV_TIME_BASE);
3500     oc->max_delay = (int)(o->mux_max_delay * AV_TIME_BASE);
3501     oc->flags |= AVFMT_FLAG_NONBLOCK;
3502
3503     /* copy chapters */
3504     if (o->chapters_input_file >= nb_input_files) {
3505         if (o->chapters_input_file == INT_MAX) {
3506             /* copy chapters from the first input file that has them*/
3507             o->chapters_input_file = -1;
3508             for (i = 0; i < nb_input_files; i++)
3509                 if (input_files[i].ctx->nb_chapters) {
3510                     o->chapters_input_file = i;
3511                     break;
3512                 }
3513         } else {
3514             av_log(NULL, AV_LOG_FATAL, "Invalid input file index %d in chapter mapping.\n",
3515                    o->chapters_input_file);
3516             exit_program(1);
3517         }
3518     }
3519     if (o->chapters_input_file >= 0)
3520         copy_chapters(&input_files[o->chapters_input_file], &output_files[nb_output_files - 1],
3521                       !o->metadata_chapters_manual);
3522
3523     /* copy metadata */
3524     for (i = 0; i < o->nb_meta_data_maps; i++) {
3525         AVFormatContext *files[2];
3526         AVDictionary    **meta[2];
3527         int j;
3528
3529 #define METADATA_CHECK_INDEX(index, nb_elems, desc)\
3530         if ((index) < 0 || (index) >= (nb_elems)) {\
3531             av_log(NULL, AV_LOG_FATAL, "Invalid %s index %d while processing metadata maps\n",\
3532                      (desc), (index));\
3533             exit_program(1);\
3534         }
3535
3536         int in_file_index = o->meta_data_maps[i][1].file;
3537         if (in_file_index < 0)
3538             continue;
3539         METADATA_CHECK_INDEX(in_file_index, nb_input_files, "input file")
3540
3541         files[0] = oc;
3542         files[1] = input_files[in_file_index].ctx;
3543
3544         for (j = 0; j < 2; j++) {
3545             MetadataMap *map = &o->meta_data_maps[i][j];
3546
3547             switch (map->type) {
3548             case 'g':
3549                 meta[j] = &files[j]->metadata;
3550                 break;
3551             case 's':
3552                 METADATA_CHECK_INDEX(map->index, files[j]->nb_streams, "stream")
3553                 meta[j] = &files[j]->streams[map->index]->metadata;
3554                 break;
3555             case 'c':
3556                 METADATA_CHECK_INDEX(map->index, files[j]->nb_chapters, "chapter")
3557                 meta[j] = &files[j]->chapters[map->index]->metadata;
3558                 break;
3559             case 'p':
3560                 METADATA_CHECK_INDEX(map->index, files[j]->nb_programs, "program")
3561                 meta[j] = &files[j]->programs[map->index]->metadata;
3562                 break;
3563             }
3564         }
3565
3566         av_dict_copy(meta[0], *meta[1], AV_DICT_DONT_OVERWRITE);
3567     }
3568
3569     /* copy global metadata by default */
3570     if (!o->metadata_global_manual && nb_input_files)
3571         av_dict_copy(&oc->metadata, input_files[0].ctx->metadata,
3572                      AV_DICT_DONT_OVERWRITE);
3573     if (!o->metadata_streams_manual)
3574         for (i = output_files[nb_output_files - 1].ost_index; i < nb_output_streams; i++) {
3575             InputStream *ist = &input_streams[output_streams[i].source_index];
3576             av_dict_copy(&output_streams[i].st->metadata, ist->st->metadata, AV_DICT_DONT_OVERWRITE);
3577         }
3578
3579     /* process manually set metadata */
3580     for (i = 0; i < o->nb_metadata; i++) {
3581         AVDictionary **m;
3582         char type, *val;
3583         int index = 0;
3584
3585         val = strchr(o->metadata[i].u.str, '=');
3586         if (!val) {
3587             av_log(NULL, AV_LOG_FATAL, "No '=' character in metadata string %s.\n",
3588                    o->metadata[i].u.str);
3589             exit_program(1);
3590         }
3591         *val++ = 0;
3592
3593         parse_meta_type(o->metadata[i].specifier, &type, &index);
3594         switch (type) {
3595         case 'g':
3596             m = &oc->metadata;
3597             break;
3598         case 's':
3599             if (index < 0 || index >= oc->nb_streams) {
3600                 av_log(NULL, AV_LOG_FATAL, "Invalid stream index %d in metadata specifier.\n", index);
3601                 exit_program(1);
3602             }
3603             m = &oc->streams[index]->metadata;
3604             break;
3605         case 'c':
3606             if (index < 0 || index >= oc->nb_chapters) {
3607                 av_log(NULL, AV_LOG_FATAL, "Invalid chapter index %d in metadata specifier.\n", index);
3608                 exit_program(1);
3609             }
3610             m = &oc->chapters[index]->metadata;
3611             break;
3612         default:
3613             av_log(NULL, AV_LOG_FATAL, "Invalid metadata specifier %s.\n", o->metadata[i].specifier);
3614             exit_program(1);
3615         }
3616
3617         av_dict_set(m, o->metadata[i].u.str, *val ? val : NULL, 0);
3618     }
3619
3620     reset_options(o);
3621 }
3622
3623 /* same option as mencoder */
3624 static int opt_pass(const char *opt, const char *arg)
3625 {
3626     do_pass = parse_number_or_die(opt, arg, OPT_INT, 1, 2);
3627     return 0;
3628 }
3629
3630 static int64_t getutime