qcelpdec: fix the return value of qcelp_decode_frame().
[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                     decoded_data_size = (ist->st->codec->width * ist->st->codec->height * 3) / 2;
1604                     if (!(decoded_frame = avcodec_alloc_frame()))
1605                         return AVERROR(ENOMEM);
1606                     avpkt.pts = pkt_pts;
1607                     avpkt.dts = ist->pts;
1608                     pkt_pts = AV_NOPTS_VALUE;
1609
1610                     ret = avcodec_decode_video2(ist->st->codec,
1611                                                 decoded_frame, &got_output, &avpkt);
1612                     quality = same_quant ? decoded_frame->quality : 0;
1613                     if (ret < 0)
1614                         goto fail;
1615                     if (!got_output) {
1616                         /* no picture yet */
1617                         av_freep(&decoded_frame);
1618                         goto discard_packet;
1619                     }
1620                     ist->next_pts = ist->pts = guess_correct_pts(&ist->pts_ctx, decoded_frame->pkt_pts,
1621                                                                  decoded_frame->pkt_dts);
1622                     if (ist->st->codec->time_base.num != 0) {
1623                         int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1624                         ist->next_pts += ((int64_t)AV_TIME_BASE *
1625                                           ist->st->codec->time_base.num * ticks) /
1626                             ist->st->codec->time_base.den;
1627                     }
1628                     avpkt.size = 0;
1629                     buffer_to_free = NULL;
1630                     pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
1631                     break;
1632             case AVMEDIA_TYPE_SUBTITLE:
1633                 ret = avcodec_decode_subtitle2(ist->st->codec,
1634                                                &subtitle, &got_output, &avpkt);
1635                 if (ret < 0)
1636                     return ret;
1637                 if (!got_output) {
1638                     goto discard_packet;
1639                 }
1640                 subtitle_to_free = &subtitle;
1641                 avpkt.size = 0;
1642                 break;
1643             default:
1644                 return -1;
1645             }
1646         } else {
1647             switch(ist->st->codec->codec_type) {
1648             case AVMEDIA_TYPE_AUDIO:
1649                 ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1650                     ist->st->codec->sample_rate;
1651                 break;
1652             case AVMEDIA_TYPE_VIDEO:
1653                 if (ist->st->codec->time_base.num != 0) {
1654                     int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1655                     ist->next_pts += ((int64_t)AV_TIME_BASE *
1656                                       ist->st->codec->time_base.num * ticks) /
1657                         ist->st->codec->time_base.den;
1658                 }
1659                 break;
1660             }
1661             avpkt.size = 0;
1662         }
1663
1664         // preprocess audio (volume)
1665         if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1666             if (audio_volume != 256) {
1667                 switch (ist->st->codec->sample_fmt) {
1668                 case AV_SAMPLE_FMT_U8:
1669                 {
1670                     uint8_t *volp = samples;
1671                     for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1672                         int v = (((*volp - 128) * audio_volume + 128) >> 8) + 128;
1673                         *volp++ = av_clip_uint8(v);
1674                     }
1675                     break;
1676                 }
1677                 case AV_SAMPLE_FMT_S16:
1678                 {
1679                     int16_t *volp = samples;
1680                     for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1681                         int v = ((*volp) * audio_volume + 128) >> 8;
1682                         *volp++ = av_clip_int16(v);
1683                     }
1684                     break;
1685                 }
1686                 case AV_SAMPLE_FMT_S32:
1687                 {
1688                     int32_t *volp = samples;
1689                     for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1690                         int64_t v = (((int64_t)*volp * audio_volume + 128) >> 8);
1691                         *volp++ = av_clipl_int32(v);
1692                     }
1693                     break;
1694                 }
1695                 case AV_SAMPLE_FMT_FLT:
1696                 {
1697                     float *volp = samples;
1698                     float scale = audio_volume / 256.f;
1699                     for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1700                         *volp++ *= scale;
1701                     }
1702                     break;
1703                 }
1704                 case AV_SAMPLE_FMT_DBL:
1705                 {
1706                     double *volp = samples;
1707                     double scale = audio_volume / 256.;
1708                     for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1709                         *volp++ *= scale;
1710                     }
1711                     break;
1712                 }
1713                 default:
1714                     av_log(NULL, AV_LOG_FATAL,
1715                            "Audio volume adjustment on sample format %s is not supported.\n",
1716                            av_get_sample_fmt_name(ist->st->codec->sample_fmt));
1717                     exit_program(1);
1718                 }
1719             }
1720         }
1721
1722         /* frame rate emulation */
1723         if (input_files[ist->file_index].rate_emu) {
1724             int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1725             int64_t now = av_gettime() - ist->start;
1726             if (pts > now)
1727                 usleep(pts - now);
1728         }
1729         /* if output time reached then transcode raw format,
1730            encode packets and output them */
1731         for (i = 0; i < nb_ostreams; i++) {
1732             OutputFile *of = &output_files[ost_table[i].file_index];
1733             int frame_size;
1734
1735             ost = &ost_table[i];
1736             if (ost->source_index != ist_index)
1737                 continue;
1738
1739             if (of->start_time && ist->pts < of->start_time)
1740                 continue;
1741
1742             if (of->recording_time != INT64_MAX &&
1743                 av_compare_ts(ist->pts, AV_TIME_BASE_Q, of->recording_time + of->start_time,
1744                               (AVRational){1, 1000000}) >= 0) {
1745                 ost->is_past_recording_time = 1;
1746                 continue;
1747             }
1748
1749 #if CONFIG_AVFILTER
1750             if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
1751                 ost->input_video_filter) {
1752                 AVRational sar;
1753                 if (ist->st->sample_aspect_ratio.num)
1754                     sar = ist->st->sample_aspect_ratio;
1755                 else
1756                     sar = ist->st->codec->sample_aspect_ratio;
1757                 av_vsrc_buffer_add_frame(ost->input_video_filter, decoded_frame, ist->pts, sar);
1758                 if (!(filtered_frame = avcodec_alloc_frame())) {
1759                     ret = AVERROR(ENOMEM);
1760                     goto fail;
1761                 }
1762             }
1763             frame_available = ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO ||
1764                 !ost->output_video_filter || avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1765             while (frame_available) {
1766                 AVRational ist_pts_tb;
1767                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ost->output_video_filter)
1768                     get_filtered_video_frame(ost->output_video_filter, filtered_frame, &ost->picref, &ist_pts_tb);
1769                 if (ost->picref)
1770                     ist->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1771 #else
1772                 filtered_frame = decoded_frame;
1773 #endif
1774                 os = output_files[ost->file_index].ctx;
1775
1776                 /* set the input output pts pairs */
1777                 //ost->sync_ipts = (double)(ist->pts + input_files[ist->file_index].ts_offset - start_time)/ AV_TIME_BASE;
1778
1779                 if (ost->encoding_needed) {
1780                     av_assert0(ist->decoding_needed);
1781                     switch(ost->st->codec->codec_type) {
1782                     case AVMEDIA_TYPE_AUDIO:
1783                         do_audio_out(os, ost, ist, decoded_data_buf, decoded_data_size);
1784                         break;
1785                     case AVMEDIA_TYPE_VIDEO:
1786 #if CONFIG_AVFILTER
1787                         if (ost->picref->video && !ost->frame_aspect_ratio)
1788                             ost->st->codec->sample_aspect_ratio = ost->picref->video->pixel_aspect;
1789 #endif
1790                         do_video_out(os, ost, ist, filtered_frame, &frame_size,
1791                                      same_quant ? quality : ost->st->codec->global_quality);
1792                         if (vstats_filename && frame_size)
1793                             do_video_stats(os, ost, frame_size);
1794                         break;
1795                     case AVMEDIA_TYPE_SUBTITLE:
1796                         do_subtitle_out(os, ost, ist, &subtitle,
1797                                         pkt->pts);
1798                         break;
1799                     default:
1800                         abort();
1801                     }
1802                 } else {
1803                     AVPacket opkt;
1804                     int64_t ost_tb_start_time= av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1805
1806                     av_init_packet(&opkt);
1807
1808                     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) && !copy_initial_nonkeyframes)
1809 #if !CONFIG_AVFILTER
1810                         continue;
1811 #else
1812                         goto cont;
1813 #endif
1814
1815                     /* no reencoding needed : output the packet directly */
1816                     /* force the input stream PTS */
1817
1818                     if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1819                         audio_size += data_size;
1820                     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1821                         video_size += data_size;
1822                         ost->sync_opts++;
1823                     }
1824
1825                     opkt.stream_index= ost->index;
1826                     if(pkt->pts != AV_NOPTS_VALUE)
1827                         opkt.pts= av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1828                     else
1829                         opkt.pts= AV_NOPTS_VALUE;
1830
1831                     if (pkt->dts == AV_NOPTS_VALUE)
1832                         opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1833                     else
1834                         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1835                     opkt.dts -= ost_tb_start_time;
1836
1837                     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1838                     opkt.flags= pkt->flags;
1839
1840                     //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1841                     if(   ost->st->codec->codec_id != CODEC_ID_H264
1842                        && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1843                        && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1844                        ) {
1845                         if(av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, data_buf, data_size, pkt->flags & AV_PKT_FLAG_KEY))
1846                             opkt.destruct= av_destruct_packet;
1847                     } else {
1848                         opkt.data = data_buf;
1849                         opkt.size = data_size;
1850                     }
1851
1852                     write_frame(os, &opkt, ost->st->codec, ost->bitstream_filters);
1853                     ost->st->codec->frame_number++;
1854                     ost->frame_number++;
1855                     av_free_packet(&opkt);
1856                 }
1857 #if CONFIG_AVFILTER
1858                 cont:
1859                 frame_available = (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) &&
1860                                    ost->output_video_filter && avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1861                 if (ost->picref)
1862                     avfilter_unref_buffer(ost->picref);
1863             }
1864             av_freep(&filtered_frame);
1865 #endif
1866             }
1867
1868 fail:
1869         av_free(buffer_to_free);
1870         /* XXX: allocate the subtitles in the codec ? */
1871         if (subtitle_to_free) {
1872             avsubtitle_free(subtitle_to_free);
1873             subtitle_to_free = NULL;
1874         }
1875         av_freep(&decoded_frame);
1876         if (ret < 0)
1877             return ret;
1878     }
1879  discard_packet:
1880
1881     return 0;
1882 }
1883
1884 static void print_sdp(OutputFile *output_files, int n)
1885 {
1886     char sdp[2048];
1887     int i;
1888     AVFormatContext **avc = av_malloc(sizeof(*avc)*n);
1889
1890     if (!avc)
1891         exit_program(1);
1892     for (i = 0; i < n; i++)
1893         avc[i] = output_files[i].ctx;
1894
1895     av_sdp_create(avc, n, sdp, sizeof(sdp));
1896     printf("SDP:\n%s\n", sdp);
1897     fflush(stdout);
1898     av_freep(&avc);
1899 }
1900
1901 static int init_input_stream(int ist_index, OutputStream *output_streams, int nb_output_streams,
1902                              char *error, int error_len)
1903 {
1904     int i;
1905     InputStream *ist = &input_streams[ist_index];
1906     if (ist->decoding_needed) {
1907         AVCodec *codec = ist->dec;
1908         if (!codec) {
1909             snprintf(error, error_len, "Decoder (codec id %d) not found for input stream #%d.%d",
1910                     ist->st->codec->codec_id, ist->file_index, ist->st->index);
1911             return AVERROR(EINVAL);
1912         }
1913
1914         /* update requested sample format for the decoder based on the
1915            corresponding encoder sample format */
1916         for (i = 0; i < nb_output_streams; i++) {
1917             OutputStream *ost = &output_streams[i];
1918             if (ost->source_index == ist_index) {
1919                 update_sample_fmt(ist->st->codec, codec, ost->st->codec);
1920                 break;
1921             }
1922         }
1923
1924         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
1925             snprintf(error, error_len, "Error while opening decoder for input stream #%d.%d",
1926                     ist->file_index, ist->st->index);
1927             return AVERROR(EINVAL);
1928         }
1929         assert_codec_experimental(ist->st->codec, 0);
1930         assert_avoptions(ist->opts);
1931     }
1932
1933     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;
1934     ist->next_pts = AV_NOPTS_VALUE;
1935     init_pts_correction(&ist->pts_ctx);
1936     ist->is_start = 1;
1937
1938     return 0;
1939 }
1940
1941 static int transcode_init(OutputFile *output_files,
1942                           int nb_output_files,
1943                           InputFile *input_files,
1944                           int nb_input_files)
1945 {
1946     int ret = 0, i, j, k;
1947     AVFormatContext *os;
1948     AVCodecContext *codec, *icodec;
1949     OutputStream *ost;
1950     InputStream *ist;
1951     char error[1024];
1952     int want_sdp = 1;
1953
1954     /* init framerate emulation */
1955     for (i = 0; i < nb_input_files; i++) {
1956         InputFile *ifile = &input_files[i];
1957         if (ifile->rate_emu)
1958             for (j = 0; j < ifile->nb_streams; j++)
1959                 input_streams[j + ifile->ist_index].start = av_gettime();
1960     }
1961
1962     /* output stream init */
1963     for(i=0;i<nb_output_files;i++) {
1964         os = output_files[i].ctx;
1965         if (!os->nb_streams && !(os->oformat->flags & AVFMT_NOSTREAMS)) {
1966             av_dump_format(os, i, os->filename, 1);
1967             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
1968             return AVERROR(EINVAL);
1969         }
1970     }
1971
1972     /* for each output stream, we compute the right encoding parameters */
1973     for (i = 0; i < nb_output_streams; i++) {
1974         ost = &output_streams[i];
1975         os = output_files[ost->file_index].ctx;
1976         ist = &input_streams[ost->source_index];
1977
1978         codec = ost->st->codec;
1979         icodec = ist->st->codec;
1980
1981         ost->st->disposition = ist->st->disposition;
1982         codec->bits_per_raw_sample= icodec->bits_per_raw_sample;
1983         codec->chroma_sample_location = icodec->chroma_sample_location;
1984
1985         if (ost->st->stream_copy) {
1986             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
1987
1988             if (extra_size > INT_MAX) {
1989                 return AVERROR(EINVAL);
1990             }
1991
1992             /* if stream_copy is selected, no need to decode or encode */
1993             codec->codec_id = icodec->codec_id;
1994             codec->codec_type = icodec->codec_type;
1995
1996             if(!codec->codec_tag){
1997                 if(   !os->oformat->codec_tag
1998                    || av_codec_get_id (os->oformat->codec_tag, icodec->codec_tag) == codec->codec_id
1999                    || av_codec_get_tag(os->oformat->codec_tag, icodec->codec_id) <= 0)
2000                     codec->codec_tag = icodec->codec_tag;
2001             }
2002
2003             codec->bit_rate = icodec->bit_rate;
2004             codec->rc_max_rate    = icodec->rc_max_rate;
2005             codec->rc_buffer_size = icodec->rc_buffer_size;
2006             codec->extradata= av_mallocz(extra_size);
2007             if (!codec->extradata) {
2008                 return AVERROR(ENOMEM);
2009             }
2010             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2011             codec->extradata_size= icodec->extradata_size;
2012             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){
2013                 codec->time_base = icodec->time_base;
2014                 codec->time_base.num *= icodec->ticks_per_frame;
2015                 av_reduce(&codec->time_base.num, &codec->time_base.den,
2016                           codec->time_base.num, codec->time_base.den, INT_MAX);
2017             }else
2018                 codec->time_base = ist->st->time_base;
2019             switch(codec->codec_type) {
2020             case AVMEDIA_TYPE_AUDIO:
2021                 if(audio_volume != 256) {
2022                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2023                     exit_program(1);
2024                 }
2025                 codec->channel_layout = icodec->channel_layout;
2026                 codec->sample_rate = icodec->sample_rate;
2027                 codec->channels = icodec->channels;
2028                 codec->frame_size = icodec->frame_size;
2029                 codec->audio_service_type = icodec->audio_service_type;
2030                 codec->block_align= icodec->block_align;
2031                 if(codec->block_align == 1 && codec->codec_id == CODEC_ID_MP3)
2032                     codec->block_align= 0;
2033                 if(codec->codec_id == CODEC_ID_AC3)
2034                     codec->block_align= 0;
2035                 break;
2036             case AVMEDIA_TYPE_VIDEO:
2037                 codec->pix_fmt = icodec->pix_fmt;
2038                 codec->width = icodec->width;
2039                 codec->height = icodec->height;
2040                 codec->has_b_frames = icodec->has_b_frames;
2041                 if (!codec->sample_aspect_ratio.num) {
2042                     codec->sample_aspect_ratio =
2043                     ost->st->sample_aspect_ratio =
2044                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2045                         ist->st->codec->sample_aspect_ratio.num ?
2046                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2047                 }
2048                 break;
2049             case AVMEDIA_TYPE_SUBTITLE:
2050                 codec->width = icodec->width;
2051                 codec->height = icodec->height;
2052                 break;
2053             case AVMEDIA_TYPE_DATA:
2054             case AVMEDIA_TYPE_ATTACHMENT:
2055                 break;
2056             default:
2057                 abort();
2058             }
2059         } else {
2060             if (!ost->enc)
2061                 ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
2062             switch(codec->codec_type) {
2063             case AVMEDIA_TYPE_AUDIO:
2064                 ost->fifo= av_fifo_alloc(1024);
2065                 if (!ost->fifo) {
2066                     return AVERROR(ENOMEM);
2067                 }
2068                 ost->reformat_pair = MAKE_SFMT_PAIR(AV_SAMPLE_FMT_NONE,AV_SAMPLE_FMT_NONE);
2069                 if (!codec->sample_rate) {
2070                     codec->sample_rate = icodec->sample_rate;
2071                     if (icodec->lowres)
2072                         codec->sample_rate >>= icodec->lowres;
2073                 }
2074                 choose_sample_rate(ost->st, ost->enc);
2075                 codec->time_base = (AVRational){1, codec->sample_rate};
2076                 if (codec->sample_fmt == AV_SAMPLE_FMT_NONE)
2077                     codec->sample_fmt = icodec->sample_fmt;
2078                 choose_sample_fmt(ost->st, ost->enc);
2079                 if (!codec->channels)
2080                     codec->channels = icodec->channels;
2081                 codec->channel_layout = icodec->channel_layout;
2082                 if (av_get_channel_layout_nb_channels(codec->channel_layout) != codec->channels)
2083                     codec->channel_layout = 0;
2084                 ost->audio_resample = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
2085                 icodec->request_channels = codec->channels;
2086                 ist->decoding_needed = 1;
2087                 ost->encoding_needed = 1;
2088                 ost->resample_sample_fmt  = icodec->sample_fmt;
2089                 ost->resample_sample_rate = icodec->sample_rate;
2090                 ost->resample_channels    = icodec->channels;
2091                 break;
2092             case AVMEDIA_TYPE_VIDEO:
2093                 if (codec->pix_fmt == PIX_FMT_NONE)
2094                     codec->pix_fmt = icodec->pix_fmt;
2095                 choose_pixel_fmt(ost->st, ost->enc);
2096
2097                 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2098                     av_log(NULL, AV_LOG_FATAL, "Video pixel format is unknown, stream cannot be encoded\n");
2099                     exit_program(1);
2100                 }
2101
2102                 if (!codec->width || !codec->height) {
2103                     codec->width  = icodec->width;
2104                     codec->height = icodec->height;
2105                 }
2106
2107                 ost->video_resample = codec->width   != icodec->width  ||
2108                                       codec->height  != icodec->height ||
2109                                       codec->pix_fmt != icodec->pix_fmt;
2110                 if (ost->video_resample) {
2111 #if !CONFIG_AVFILTER
2112                     avcodec_get_frame_defaults(&ost->pict_tmp);
2113                     if(avpicture_alloc((AVPicture*)&ost->pict_tmp, codec->pix_fmt,
2114                                        codec->width, codec->height)) {
2115                         av_log(NULL, AV_LOG_FATAL, "Cannot allocate temp picture, check pix fmt\n");
2116                         exit_program(1);
2117                     }
2118                     ost->img_resample_ctx = sws_getContext(
2119                         icodec->width,
2120                         icodec->height,
2121                         icodec->pix_fmt,
2122                         codec->width,
2123                         codec->height,
2124                         codec->pix_fmt,
2125                         ost->sws_flags, NULL, NULL, NULL);
2126                     if (ost->img_resample_ctx == NULL) {
2127                         av_log(NULL, AV_LOG_FATAL, "Cannot get resampling context\n");
2128                         exit_program(1);
2129                     }
2130 #endif
2131                     codec->bits_per_raw_sample= 0;
2132                 }
2133
2134                 ost->resample_height = icodec->height;
2135                 ost->resample_width  = icodec->width;
2136                 ost->resample_pix_fmt= icodec->pix_fmt;
2137                 ost->encoding_needed = 1;
2138                 ist->decoding_needed = 1;
2139
2140                 if (!ost->frame_rate.num)
2141                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25,1};
2142                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2143                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2144                     ost->frame_rate = ost->enc->supported_framerates[idx];
2145                 }
2146                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
2147
2148 #if CONFIG_AVFILTER
2149                 if (configure_video_filters(ist, ost)) {
2150                     av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2151                     exit(1);
2152                 }
2153 #endif
2154                 break;
2155             case AVMEDIA_TYPE_SUBTITLE:
2156                 ost->encoding_needed = 1;
2157                 ist->decoding_needed = 1;
2158                 break;
2159             default:
2160                 abort();
2161                 break;
2162             }
2163             /* two pass mode */
2164             if (ost->encoding_needed &&
2165                 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2166                 char logfilename[1024];
2167                 FILE *f;
2168
2169                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2170                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2171                          i);
2172                 if (codec->flags & CODEC_FLAG_PASS1) {
2173                     f = fopen(logfilename, "wb");
2174                     if (!f) {
2175                         av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2176                                logfilename, strerror(errno));
2177                         exit_program(1);
2178                     }
2179                     ost->logfile = f;
2180                 } else {
2181                     char  *logbuffer;
2182                     size_t logbuffer_size;
2183                     if (read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2184                         av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2185                                logfilename);
2186                         exit_program(1);
2187                     }
2188                     codec->stats_in = logbuffer;
2189                 }
2190             }
2191         }
2192         if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2193             int size= codec->width * codec->height;
2194             bit_buffer_size= FFMAX(bit_buffer_size, 6*size + 200);
2195         }
2196     }
2197
2198     if (!bit_buffer)
2199         bit_buffer = av_malloc(bit_buffer_size);
2200     if (!bit_buffer) {
2201         av_log(NULL, AV_LOG_ERROR, "Cannot allocate %d bytes output buffer\n",
2202                bit_buffer_size);
2203         return AVERROR(ENOMEM);
2204     }
2205
2206     /* open each encoder */
2207     for (i = 0; i < nb_output_streams; i++) {
2208         ost = &output_streams[i];
2209         if (ost->encoding_needed) {
2210             AVCodec *codec = ost->enc;
2211             AVCodecContext *dec = input_streams[ost->source_index].st->codec;
2212             if (!codec) {
2213                 snprintf(error, sizeof(error), "Encoder (codec id %d) not found for output stream #%d.%d",
2214                          ost->st->codec->codec_id, ost->file_index, ost->index);
2215                 ret = AVERROR(EINVAL);
2216                 goto dump_format;
2217             }
2218             if (dec->subtitle_header) {
2219                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2220                 if (!ost->st->codec->subtitle_header) {
2221                     ret = AVERROR(ENOMEM);
2222                     goto dump_format;
2223                 }
2224                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2225                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2226             }
2227             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2228                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d.%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2229                         ost->file_index, ost->index);
2230                 ret = AVERROR(EINVAL);
2231                 goto dump_format;
2232             }
2233             assert_codec_experimental(ost->st->codec, 1);
2234             assert_avoptions(ost->opts);
2235             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2236                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2237                                              "It takes bits/s as argument, not kbits/s\n");
2238             extra_size += ost->st->codec->extradata_size;
2239
2240             if (ost->st->codec->me_threshold)
2241                 input_streams[ost->source_index].st->codec->debug |= FF_DEBUG_MV;
2242         }
2243     }
2244
2245     /* init input streams */
2246     for (i = 0; i < nb_input_streams; i++)
2247         if ((ret = init_input_stream(i, output_streams, nb_output_streams, error, sizeof(error))) < 0)
2248             goto dump_format;
2249
2250     /* discard unused programs */
2251     for (i = 0; i < nb_input_files; i++) {
2252         InputFile *ifile = &input_files[i];
2253         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2254             AVProgram *p = ifile->ctx->programs[j];
2255             int discard  = AVDISCARD_ALL;
2256
2257             for (k = 0; k < p->nb_stream_indexes; k++)
2258                 if (!input_streams[ifile->ist_index + p->stream_index[k]].discard) {
2259                     discard = AVDISCARD_DEFAULT;
2260                     break;
2261                 }
2262             p->discard = discard;
2263         }
2264     }
2265
2266     /* open files and write file headers */
2267     for (i = 0; i < nb_output_files; i++) {
2268         os = output_files[i].ctx;
2269         if (avformat_write_header(os, &output_files[i].opts) < 0) {
2270             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2271             ret = AVERROR(EINVAL);
2272             goto dump_format;
2273         }
2274         assert_avoptions(output_files[i].opts);
2275         if (strcmp(os->oformat->name, "rtp")) {
2276             want_sdp = 0;
2277         }
2278     }
2279
2280  dump_format:
2281     /* dump the file output parameters - cannot be done before in case
2282        of stream copy */
2283     for(i=0;i<nb_output_files;i++) {
2284         av_dump_format(output_files[i].ctx, i, output_files[i].ctx->filename, 1);
2285     }
2286
2287     /* dump the stream mapping */
2288     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2289     for (i = 0; i < nb_output_streams; i++) {
2290         ost = &output_streams[i];
2291         av_log(NULL, AV_LOG_INFO, "  Stream #%d.%d -> #%d.%d",
2292                input_streams[ost->source_index].file_index,
2293                input_streams[ost->source_index].st->index,
2294                ost->file_index,
2295                ost->index);
2296         if (ost->sync_ist != &input_streams[ost->source_index])
2297             av_log(NULL, AV_LOG_INFO, " [sync #%d.%d]",
2298                    ost->sync_ist->file_index,
2299                    ost->sync_ist->st->index);
2300         if (ost->st->stream_copy)
2301             av_log(NULL, AV_LOG_INFO, " (copy)");
2302         else
2303             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index].dec ?
2304                    input_streams[ost->source_index].dec->name : "?",
2305                    ost->enc ? ost->enc->name : "?");
2306         av_log(NULL, AV_LOG_INFO, "\n");
2307     }
2308
2309     if (ret) {
2310         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2311         return ret;
2312     }
2313
2314     if (want_sdp) {
2315         print_sdp(output_files, nb_output_files);
2316     }
2317
2318     return 0;
2319 }
2320
2321 /*
2322  * The following code is the main loop of the file converter
2323  */
2324 static int transcode(OutputFile *output_files,
2325                      int nb_output_files,
2326                      InputFile *input_files,
2327                      int nb_input_files)
2328 {
2329     int ret, i;
2330     AVFormatContext *is, *os;
2331     OutputStream *ost;
2332     InputStream *ist;
2333     uint8_t *no_packet;
2334     int no_packet_count=0;
2335     int64_t timer_start;
2336
2337     if (!(no_packet = av_mallocz(nb_input_files)))
2338         exit_program(1);
2339
2340     ret = transcode_init(output_files, nb_output_files, input_files, nb_input_files);
2341     if (ret < 0)
2342         goto fail;
2343
2344     av_log(NULL, AV_LOG_INFO, "Press ctrl-c to stop encoding\n");
2345     term_init();
2346
2347     timer_start = av_gettime();
2348
2349     for(; received_sigterm == 0;) {
2350         int file_index, ist_index;
2351         AVPacket pkt;
2352         int64_t ipts_min;
2353         double opts_min;
2354
2355         ipts_min = INT64_MAX;
2356         opts_min= 1e100;
2357
2358         /* select the stream that we must read now by looking at the
2359            smallest output pts */
2360         file_index = -1;
2361         for (i = 0; i < nb_output_streams; i++) {
2362             OutputFile *of;
2363             int64_t ipts;
2364             double  opts;
2365             ost = &output_streams[i];
2366             of = &output_files[ost->file_index];
2367             os = output_files[ost->file_index].ctx;
2368             ist = &input_streams[ost->source_index];
2369             if (ost->is_past_recording_time || no_packet[ist->file_index] ||
2370                 (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2371                 continue;
2372             opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2373             ipts = ist->pts;
2374             if (!input_files[ist->file_index].eof_reached){
2375                 if(ipts < ipts_min) {
2376                     ipts_min = ipts;
2377                     if(input_sync ) file_index = ist->file_index;
2378                 }
2379                 if(opts < opts_min) {
2380                     opts_min = opts;
2381                     if(!input_sync) file_index = ist->file_index;
2382                 }
2383             }
2384             if (ost->frame_number >= ost->max_frames) {
2385                 int j;
2386                 for (j = 0; j < of->ctx->nb_streams; j++)
2387                     output_streams[of->ost_index + j].is_past_recording_time = 1;
2388                 continue;
2389             }
2390         }
2391         /* if none, if is finished */
2392         if (file_index < 0) {
2393             if(no_packet_count){
2394                 no_packet_count=0;
2395                 memset(no_packet, 0, nb_input_files);
2396                 usleep(10000);
2397                 continue;
2398             }
2399             break;
2400         }
2401
2402         /* read a frame from it and output it in the fifo */
2403         is = input_files[file_index].ctx;
2404         ret= av_read_frame(is, &pkt);
2405         if(ret == AVERROR(EAGAIN)){
2406             no_packet[file_index]=1;
2407             no_packet_count++;
2408             continue;
2409         }
2410         if (ret < 0) {
2411             input_files[file_index].eof_reached = 1;
2412             if (opt_shortest)
2413                 break;
2414             else
2415                 continue;
2416         }
2417
2418         no_packet_count=0;
2419         memset(no_packet, 0, nb_input_files);
2420
2421         if (do_pkt_dump) {
2422             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2423                              is->streams[pkt.stream_index]);
2424         }
2425         /* the following test is needed in case new streams appear
2426            dynamically in stream : we ignore them */
2427         if (pkt.stream_index >= input_files[file_index].nb_streams)
2428             goto discard_packet;
2429         ist_index = input_files[file_index].ist_index + pkt.stream_index;
2430         ist = &input_streams[ist_index];
2431         if (ist->discard)
2432             goto discard_packet;
2433
2434         if (pkt.dts != AV_NOPTS_VALUE)
2435             pkt.dts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2436         if (pkt.pts != AV_NOPTS_VALUE)
2437             pkt.pts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2438
2439         if(pkt.pts != AV_NOPTS_VALUE)
2440             pkt.pts *= ist->ts_scale;
2441         if(pkt.dts != AV_NOPTS_VALUE)
2442             pkt.dts *= ist->ts_scale;
2443
2444 //        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);
2445         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2446             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2447             int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2448             int64_t delta= pkt_dts - ist->next_pts;
2449             if((FFABS(delta) > 1LL*dts_delta_threshold*AV_TIME_BASE || pkt_dts+1<ist->pts)&& !copy_ts){
2450                 input_files[ist->file_index].ts_offset -= delta;
2451                 av_log(NULL, AV_LOG_DEBUG, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2452                        delta, input_files[ist->file_index].ts_offset);
2453                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2454                 if(pkt.pts != AV_NOPTS_VALUE)
2455                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2456             }
2457         }
2458
2459         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
2460         if (output_packet(ist, ist_index, output_streams, nb_output_streams, &pkt) < 0) {
2461
2462             av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d.%d\n",
2463                    ist->file_index, ist->st->index);
2464             if (exit_on_error)
2465                 exit_program(1);
2466             av_free_packet(&pkt);
2467             continue;
2468         }
2469
2470     discard_packet:
2471         av_free_packet(&pkt);
2472
2473         /* dump report by using the output first video and audio streams */
2474         print_report(output_files, output_streams, nb_output_streams, 0, timer_start);
2475     }
2476
2477     /* at the end of stream, we must flush the decoder buffers */
2478     for (i = 0; i < nb_input_streams; i++) {
2479         ist = &input_streams[i];
2480         if (ist->decoding_needed) {
2481             output_packet(ist, i, output_streams, nb_output_streams, NULL);
2482         }
2483     }
2484     flush_encoders(output_streams, nb_output_streams);
2485
2486     term_exit();
2487
2488     /* write the trailer if needed and close file */
2489     for(i=0;i<nb_output_files;i++) {
2490         os = output_files[i].ctx;
2491         av_write_trailer(os);
2492     }
2493
2494     /* dump report by using the first video and audio streams */
2495     print_report(output_files, output_streams, nb_output_streams, 1, timer_start);
2496
2497     /* close each encoder */
2498     for (i = 0; i < nb_output_streams; i++) {
2499         ost = &output_streams[i];
2500         if (ost->encoding_needed) {
2501             av_freep(&ost->st->codec->stats_in);
2502             avcodec_close(ost->st->codec);
2503         }
2504 #if CONFIG_AVFILTER
2505         avfilter_graph_free(&ost->graph);
2506 #endif
2507     }
2508
2509     /* close each decoder */
2510     for (i = 0; i < nb_input_streams; i++) {
2511         ist = &input_streams[i];
2512         if (ist->decoding_needed) {
2513             avcodec_close(ist->st->codec);
2514         }
2515     }
2516
2517     /* finished ! */
2518     ret = 0;
2519
2520  fail:
2521     av_freep(&bit_buffer);
2522     av_freep(&no_packet);
2523
2524     if (output_streams) {
2525         for (i = 0; i < nb_output_streams; i++) {
2526             ost = &output_streams[i];
2527             if (ost) {
2528                 if (ost->st->stream_copy)
2529                     av_freep(&ost->st->codec->extradata);
2530                 if (ost->logfile) {
2531                     fclose(ost->logfile);
2532                     ost->logfile = NULL;
2533                 }
2534                 av_fifo_free(ost->fifo); /* works even if fifo is not
2535                                              initialized but set to zero */
2536                 av_freep(&ost->st->codec->subtitle_header);
2537                 av_free(ost->pict_tmp.data[0]);
2538                 av_free(ost->forced_kf_pts);
2539                 if (ost->video_resample)
2540                     sws_freeContext(ost->img_resample_ctx);
2541                 if (ost->resample)
2542                     audio_resample_close(ost->resample);
2543                 if (ost->reformat_ctx)
2544                     av_audio_convert_free(ost->reformat_ctx);
2545                 av_dict_free(&ost->opts);
2546             }
2547         }
2548     }
2549     return ret;
2550 }
2551
2552 static int opt_verbose(const char *opt, const char *arg)
2553 {
2554     av_log(NULL, AV_LOG_WARNING, "-%s is deprecated, use -loglevel\n", opt);
2555     return 0;
2556 }
2557
2558 static double parse_frame_aspect_ratio(const char *arg)
2559 {
2560     int x = 0, y = 0;
2561     double ar = 0;
2562     const char *p;
2563     char *end;
2564
2565     p = strchr(arg, ':');
2566     if (p) {
2567         x = strtol(arg, &end, 10);
2568         if (end == p)
2569             y = strtol(end+1, &end, 10);
2570         if (x > 0 && y > 0)
2571             ar = (double)x / (double)y;
2572     } else
2573         ar = strtod(arg, NULL);
2574
2575     if (!ar) {
2576         av_log(NULL, AV_LOG_FATAL, "Incorrect aspect ratio specification.\n");
2577         exit_program(1);
2578     }
2579     return ar;
2580 }
2581
2582 static int opt_audio_codec(OptionsContext *o, const char *opt, const char *arg)
2583 {
2584     return parse_option(o, "codec:a", arg, options);
2585 }
2586
2587 static int opt_video_codec(OptionsContext *o, const char *opt, const char *arg)
2588 {
2589     return parse_option(o, "codec:v", arg, options);
2590 }
2591
2592 static int opt_subtitle_codec(OptionsContext *o, const char *opt, const char *arg)
2593 {
2594     return parse_option(o, "codec:s", arg, options);
2595 }
2596
2597 static int opt_data_codec(OptionsContext *o, const char *opt, const char *arg)
2598 {
2599     return parse_option(o, "codec:d", arg, options);
2600 }
2601
2602 static int opt_map(OptionsContext *o, const char *opt, const char *arg)
2603 {
2604     StreamMap *m = NULL;
2605     int i, negative = 0, file_idx;
2606     int sync_file_idx = -1, sync_stream_idx;
2607     char *p, *sync;
2608     char *map;
2609
2610     if (*arg == '-') {
2611         negative = 1;
2612         arg++;
2613     }
2614     map = av_strdup(arg);
2615
2616     /* parse sync stream first, just pick first matching stream */
2617     if (sync = strchr(map, ',')) {
2618         *sync = 0;
2619         sync_file_idx = strtol(sync + 1, &sync, 0);
2620         if (sync_file_idx >= nb_input_files || sync_file_idx < 0) {
2621             av_log(NULL, AV_LOG_FATAL, "Invalid sync file index: %d.\n", sync_file_idx);
2622             exit_program(1);
2623         }
2624         if (*sync)
2625             sync++;
2626         for (i = 0; i < input_files[sync_file_idx].nb_streams; i++)
2627             if (check_stream_specifier(input_files[sync_file_idx].ctx,
2628                                        input_files[sync_file_idx].ctx->streams[i], sync) == 1) {
2629                 sync_stream_idx = i;
2630                 break;
2631             }
2632         if (i == input_files[sync_file_idx].nb_streams) {
2633             av_log(NULL, AV_LOG_FATAL, "Sync stream specification in map %s does not "
2634                                        "match any streams.\n", arg);
2635             exit_program(1);
2636         }
2637     }
2638
2639
2640     file_idx = strtol(map, &p, 0);
2641     if (file_idx >= nb_input_files || file_idx < 0) {
2642         av_log(NULL, AV_LOG_FATAL, "Invalid input file index: %d.\n", file_idx);
2643         exit_program(1);
2644     }
2645     if (negative)
2646         /* disable some already defined maps */
2647         for (i = 0; i < o->nb_stream_maps; i++) {
2648             m = &o->stream_maps[i];
2649             if (check_stream_specifier(input_files[m->file_index].ctx,
2650                                        input_files[m->file_index].ctx->streams[m->stream_index],
2651                                        *p == ':' ? p + 1 : p) > 0)
2652                 m->disabled = 1;
2653         }
2654     else
2655         for (i = 0; i < input_files[file_idx].nb_streams; i++) {
2656             if (check_stream_specifier(input_files[file_idx].ctx, input_files[file_idx].ctx->streams[i],
2657                         *p == ':' ? p + 1 : p) <= 0)
2658                 continue;
2659             o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
2660                                         &o->nb_stream_maps, o->nb_stream_maps + 1);
2661             m = &o->stream_maps[o->nb_stream_maps - 1];
2662
2663             m->file_index   = file_idx;
2664             m->stream_index = i;
2665
2666             if (sync_file_idx >= 0) {
2667                 m->sync_file_index   = sync_file_idx;
2668                 m->sync_stream_index = sync_stream_idx;
2669             } else {
2670                 m->sync_file_index   = file_idx;
2671                 m->sync_stream_index = i;
2672             }
2673         }
2674
2675     if (!m) {
2676         av_log(NULL, AV_LOG_FATAL, "Stream map '%s' matches no streams.\n", arg);
2677         exit_program(1);
2678     }
2679
2680     av_freep(&map);
2681     return 0;
2682 }
2683
2684 static void parse_meta_type(char *arg, char *type, int *index)
2685 {
2686     if (*arg) {
2687         *type = *arg;
2688         switch (*arg) {
2689         case 'g':
2690             break;
2691         case 's':
2692         case 'c':
2693         case 'p':
2694             if (*(++arg) == ':')
2695                 *index = strtol(++arg, NULL, 0);
2696             break;
2697         default:
2698             av_log(NULL, AV_LOG_FATAL, "Invalid metadata type %c.\n", *arg);
2699             exit_program(1);
2700         }
2701     } else
2702         *type = 'g';
2703 }
2704
2705 static int opt_map_metadata(OptionsContext *o, const char *opt, const char *arg)
2706 {
2707     MetadataMap *m, *m1;
2708     char *p;
2709
2710     o->meta_data_maps = grow_array(o->meta_data_maps, sizeof(*o->meta_data_maps),
2711                                    &o->nb_meta_data_maps, o->nb_meta_data_maps + 1);
2712
2713     m = &o->meta_data_maps[o->nb_meta_data_maps - 1][1];
2714     m->file = strtol(arg, &p, 0);
2715     parse_meta_type(*p ? p + 1 : p, &m->type, &m->index);
2716
2717     m1 = &o->meta_data_maps[o->nb_meta_data_maps - 1][0];
2718     if (p = strchr(opt, ':'))
2719         parse_meta_type(p + 1, &m1->type, &m1->index);
2720     else
2721         m1->type = 'g';
2722
2723     if (m->type == 'g' || m1->type == 'g')
2724         o->metadata_global_manual = 1;
2725     if (m->type == 's' || m1->type == 's')
2726         o->metadata_streams_manual = 1;
2727     if (m->type == 'c' || m1->type == 'c')
2728         o->metadata_chapters_manual = 1;
2729
2730     return 0;
2731 }
2732
2733 static enum CodecID find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
2734 {
2735     const char *codec_string = encoder ? "encoder" : "decoder";
2736     AVCodec *codec;
2737
2738     if(!name)
2739         return CODEC_ID_NONE;
2740     codec = encoder ?
2741         avcodec_find_encoder_by_name(name) :
2742         avcodec_find_decoder_by_name(name);
2743     if(!codec) {
2744         av_log(NULL, AV_LOG_FATAL, "Unknown %s '%s'\n", codec_string, name);
2745         exit_program(1);
2746     }
2747     if(codec->type != type) {
2748         av_log(NULL, AV_LOG_FATAL, "Invalid %s type '%s'\n", codec_string, name);
2749         exit_program(1);
2750     }
2751     return codec->id;
2752 }
2753
2754 static AVCodec *choose_codec(OptionsContext *o, AVFormatContext *s, AVStream *st, enum AVMediaType type)
2755 {
2756     char *codec_name = NULL;
2757
2758     MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, st);
2759
2760     if (!codec_name) {
2761         if (s->oformat) {
2762             st->codec->codec_id = av_guess_codec(s->oformat, NULL, s->filename, NULL, type);
2763             return avcodec_find_encoder(st->codec->codec_id);
2764         }
2765     } else if (!strcmp(codec_name, "copy"))
2766         st->stream_copy = 1;
2767     else {
2768         st->codec->codec_id = find_codec_or_die(codec_name, type, s->iformat == NULL);
2769         return s->oformat ? avcodec_find_encoder_by_name(codec_name) :
2770                             avcodec_find_decoder_by_name(codec_name);
2771     }
2772
2773     return NULL;
2774 }
2775
2776 /**
2777  * Add all the streams from the given input file to the global
2778  * list of input streams.
2779  */
2780 static void add_input_streams(OptionsContext *o, AVFormatContext *ic)
2781 {
2782     int i, rfps, rfps_base;
2783
2784     for (i = 0; i < ic->nb_streams; i++) {
2785         AVStream *st = ic->streams[i];
2786         AVCodecContext *dec = st->codec;
2787         InputStream *ist;
2788         double scale = 1.0;
2789
2790         input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
2791         ist = &input_streams[nb_input_streams - 1];
2792         ist->st = st;
2793         ist->file_index = nb_input_files;
2794         ist->discard = 1;
2795         ist->opts = filter_codec_opts(codec_opts, ist->st->codec->codec_id, ic, st);
2796
2797         MATCH_PER_STREAM_OPT(ts_scale, dbl, scale, ic, st);
2798         ist->ts_scale = scale;
2799
2800         ist->dec = choose_codec(o, ic, st, dec->codec_type);
2801         if (!ist->dec)
2802             ist->dec = avcodec_find_decoder(dec->codec_id);
2803
2804         switch (dec->codec_type) {
2805         case AVMEDIA_TYPE_AUDIO:
2806             if (o->audio_disable)
2807                 st->discard= AVDISCARD_ALL;
2808             break;
2809         case AVMEDIA_TYPE_VIDEO:
2810             rfps      = ic->streams[i]->r_frame_rate.num;
2811             rfps_base = ic->streams[i]->r_frame_rate.den;
2812             if (dec->lowres) {
2813                 dec->flags |= CODEC_FLAG_EMU_EDGE;
2814                 dec->height >>= dec->lowres;
2815                 dec->width  >>= dec->lowres;
2816             }
2817
2818             if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
2819
2820                 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",
2821                        i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
2822                        (float)rfps / rfps_base, rfps, rfps_base);
2823             }
2824
2825             if (o->video_disable)
2826                 st->discard= AVDISCARD_ALL;
2827             else if(video_discard)
2828                 st->discard= video_discard;
2829             break;
2830         case AVMEDIA_TYPE_DATA:
2831             break;
2832         case AVMEDIA_TYPE_SUBTITLE:
2833             if (o->subtitle_disable)
2834                 st->discard = AVDISCARD_ALL;
2835             break;
2836         case AVMEDIA_TYPE_ATTACHMENT:
2837         case AVMEDIA_TYPE_UNKNOWN:
2838             break;
2839         default:
2840             abort();
2841         }
2842     }
2843 }
2844
2845 static int opt_input_file(OptionsContext *o, const char *opt, const char *filename)
2846 {
2847     AVFormatContext *ic;
2848     AVInputFormat *file_iformat = NULL;
2849     int err, i, ret;
2850     int64_t timestamp;
2851     uint8_t buf[128];
2852     AVDictionary **opts;
2853     int orig_nb_streams;                     // number of streams before avformat_find_stream_info
2854
2855     if (o->format) {
2856         if (!(file_iformat = av_find_input_format(o->format))) {
2857             av_log(NULL, AV_LOG_FATAL, "Unknown input format: '%s'\n", o->format);
2858             exit_program(1);
2859         }
2860     }
2861
2862     if (!strcmp(filename, "-"))
2863         filename = "pipe:";
2864
2865     using_stdin |= !strncmp(filename, "pipe:", 5) ||
2866                     !strcmp(filename, "/dev/stdin");
2867
2868     /* get default parameters from command line */
2869     ic = avformat_alloc_context();
2870     if (!ic) {
2871         print_error(filename, AVERROR(ENOMEM));
2872         exit_program(1);
2873     }
2874     if (o->nb_audio_sample_rate) {
2875         snprintf(buf, sizeof(buf), "%d", o->audio_sample_rate[o->nb_audio_sample_rate - 1].u.i);
2876         av_dict_set(&format_opts, "sample_rate", buf, 0);
2877     }
2878     if (o->nb_audio_channels) {
2879         snprintf(buf, sizeof(buf), "%d", o->audio_channels[o->nb_audio_channels - 1].u.i);
2880         av_dict_set(&format_opts, "channels", buf, 0);
2881     }
2882     if (o->nb_frame_rates) {
2883         av_dict_set(&format_opts, "framerate", o->frame_rates[o->nb_frame_rates - 1].u.str, 0);
2884     }
2885     if (o->nb_frame_sizes) {
2886         av_dict_set(&format_opts, "video_size", o->frame_sizes[o->nb_frame_sizes - 1].u.str, 0);
2887     }
2888     if (o->nb_frame_pix_fmts)
2889         av_dict_set(&format_opts, "pixel_format", o->frame_pix_fmts[o->nb_frame_pix_fmts - 1].u.str, 0);
2890
2891     ic->flags |= AVFMT_FLAG_NONBLOCK;
2892
2893     /* open the input file with generic libav function */
2894     err = avformat_open_input(&ic, filename, file_iformat, &format_opts);
2895     if (err < 0) {
2896         print_error(filename, err);
2897         exit_program(1);
2898     }
2899     assert_avoptions(format_opts);
2900
2901     /* apply forced codec ids */
2902     for (i = 0; i < ic->nb_streams; i++)
2903         choose_codec(o, ic, ic->streams[i], ic->streams[i]->codec->codec_type);
2904
2905     /* Set AVCodecContext options for avformat_find_stream_info */
2906     opts = setup_find_stream_info_opts(ic, codec_opts);
2907     orig_nb_streams = ic->nb_streams;
2908
2909     /* If not enough info to get the stream parameters, we decode the
2910        first frames to get it. (used in mpeg case for example) */
2911     ret = avformat_find_stream_info(ic, opts);
2912     if (ret < 0) {
2913         av_log(NULL, AV_LOG_FATAL, "%s: could not find codec parameters\n", filename);
2914         av_close_input_file(ic);
2915         exit_program(1);
2916     }
2917
2918     timestamp = o->start_time;
2919     /* add the stream start time */
2920     if (ic->start_time != AV_NOPTS_VALUE)
2921         timestamp += ic->start_time;
2922
2923     /* if seeking requested, we execute it */
2924     if (o->start_time != 0) {
2925         ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
2926         if (ret < 0) {
2927             av_log(NULL, AV_LOG_WARNING, "%s: could not seek to position %0.3f\n",
2928                    filename, (double)timestamp / AV_TIME_BASE);
2929         }
2930     }
2931
2932     /* update the current parameters so that they match the one of the input stream */
2933     add_input_streams(o, ic);
2934
2935     /* dump the file content */
2936     av_dump_format(ic, nb_input_files, filename, 0);
2937
2938     input_files = grow_array(input_files, sizeof(*input_files), &nb_input_files, nb_input_files + 1);
2939     input_files[nb_input_files - 1].ctx        = ic;
2940     input_files[nb_input_files - 1].ist_index  = nb_input_streams - ic->nb_streams;
2941     input_files[nb_input_files - 1].ts_offset  = o->input_ts_offset - (copy_ts ? 0 : timestamp);
2942     input_files[nb_input_files - 1].nb_streams = ic->nb_streams;
2943     input_files[nb_input_files - 1].rate_emu   = o->rate_emu;
2944
2945     for (i = 0; i < orig_nb_streams; i++)
2946         av_dict_free(&opts[i]);
2947     av_freep(&opts);
2948
2949     reset_options(o);
2950     return 0;
2951 }
2952
2953 static void parse_forced_key_frames(char *kf, OutputStream *ost,
2954                                     AVCodecContext *avctx)
2955 {
2956     char *p;
2957     int n = 1, i;
2958     int64_t t;
2959
2960     for (p = kf; *p; p++)
2961         if (*p == ',')
2962             n++;
2963     ost->forced_kf_count = n;
2964     ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
2965     if (!ost->forced_kf_pts) {
2966         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
2967         exit_program(1);
2968     }
2969     for (i = 0; i < n; i++) {
2970         p = i ? strchr(p, ',') + 1 : kf;
2971         t = parse_time_or_die("force_key_frames", p, 1);
2972         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
2973     }
2974 }
2975
2976 static OutputStream *new_output_stream(OptionsContext *o, AVFormatContext *oc, enum AVMediaType type)
2977 {
2978     OutputStream *ost;
2979     AVStream *st = av_new_stream(oc, oc->nb_streams < o->nb_streamid_map ? o->streamid_map[oc->nb_streams] : 0);
2980     int idx      = oc->nb_streams - 1;
2981     int64_t max_frames = INT64_MAX;
2982     char *bsf = NULL, *next, *codec_tag = NULL;
2983     AVBitStreamFilterContext *bsfc, *bsfc_prev = NULL;
2984     double qscale = -1;
2985
2986     if (!st) {
2987         av_log(NULL, AV_LOG_FATAL, "Could not alloc stream.\n");
2988         exit_program(1);
2989     }
2990
2991     output_streams = grow_array(output_streams, sizeof(*output_streams), &nb_output_streams,
2992                                 nb_output_streams + 1);
2993     ost = &output_streams[nb_output_streams - 1];
2994     ost->file_index = nb_output_files;
2995     ost->index = idx;
2996     ost->st    = st;
2997     st->codec->codec_type = type;
2998     ost->enc = choose_codec(o, oc, st, type);
2999     if (ost->enc) {
3000         ost->opts  = filter_codec_opts(codec_opts, ost->enc->id, oc, st);
3001     }
3002
3003     avcodec_get_context_defaults3(st->codec, ost->enc);
3004     st->codec->codec_type = type; // XXX hack, avcodec_get_context_defaults2() sets type to unknown for stream copy
3005
3006     MATCH_PER_STREAM_OPT(max_frames, i64, max_frames, oc, st);
3007     ost->max_frames = max_frames;
3008
3009     MATCH_PER_STREAM_OPT(bitstream_filters, str, bsf, oc, st);
3010     while (bsf) {
3011         if (next = strchr(bsf, ','))
3012             *next++ = 0;
3013         if (!(bsfc = av_bitstream_filter_init(bsf))) {
3014             av_log(NULL, AV_LOG_FATAL, "Unknown bitstream filter %s\n", bsf);
3015             exit_program(1);
3016         }
3017         if (bsfc_prev)
3018             bsfc_prev->next = bsfc;
3019         else
3020             ost->bitstream_filters = bsfc;
3021
3022         bsfc_prev = bsfc;
3023         bsf       = next;
3024     }
3025
3026     MATCH_PER_STREAM_OPT(codec_tags, str, codec_tag, oc, st);
3027     if (codec_tag) {
3028         uint32_t tag = strtol(codec_tag, &next, 0);
3029         if (*next)
3030             tag = AV_RL32(codec_tag);
3031         st->codec->codec_tag = tag;
3032     }
3033
3034     MATCH_PER_STREAM_OPT(qscale, dbl, qscale, oc, st);
3035     if (qscale >= 0 || same_quant) {
3036         st->codec->flags |= CODEC_FLAG_QSCALE;
3037         st->codec->global_quality = FF_QP2LAMBDA * qscale;
3038     }
3039
3040     if (oc->oformat->flags & AVFMT_GLOBALHEADER)
3041         st->codec->flags |= CODEC_FLAG_GLOBAL_HEADER;
3042
3043     ost->sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
3044     return ost;
3045 }
3046
3047 static void parse_matrix_coeffs(uint16_t *dest, const char *str)
3048 {
3049     int i;
3050     const char *p = str;
3051     for(i = 0;; i++) {
3052         dest[i] = atoi(p);
3053         if(i == 63)
3054             break;
3055         p = strchr(p, ',');
3056         if(!p) {
3057             av_log(NULL, AV_LOG_FATAL, "Syntax error in matrix \"%s\" at coeff %d\n", str, i);
3058             exit_program(1);
3059         }
3060         p++;
3061     }
3062 }
3063
3064 static OutputStream *new_video_stream(OptionsContext *o, AVFormatContext *oc)
3065 {
3066     AVStream *st;
3067     OutputStream *ost;
3068     AVCodecContext *video_enc;
3069
3070     ost = new_output_stream(o, oc, AVMEDIA_TYPE_VIDEO);
3071     st  = ost->st;
3072     video_enc = st->codec;
3073
3074     if (!st->stream_copy) {
3075         const char *p = NULL;
3076         char *forced_key_frames = NULL, *frame_rate = NULL, *frame_size = NULL;
3077         char *frame_aspect_ratio = NULL, *frame_pix_fmt = NULL;
3078         char *intra_matrix = NULL, *inter_matrix = NULL, *filters = NULL;
3079         int i, force_fps = 0, top_field_first = -1;
3080
3081         MATCH_PER_STREAM_OPT(frame_rates, str, frame_rate, oc, st);
3082         if (frame_rate && av_parse_video_rate(&ost->frame_rate, frame_rate) < 0) {
3083             av_log(NULL, AV_LOG_FATAL, "Invalid framerate value: %s\n", frame_rate);
3084             exit_program(1);
3085         }
3086
3087         MATCH_PER_STREAM_OPT(frame_sizes, str, frame_size, oc, st);
3088         if (frame_size && av_parse_video_size(&video_enc->width, &video_enc->height, frame_size) < 0) {
3089             av_log(NULL, AV_LOG_FATAL, "Invalid frame size: %s.\n", frame_size);
3090             exit_program(1);
3091         }
3092
3093         MATCH_PER_STREAM_OPT(frame_aspect_ratios, str, frame_aspect_ratio, oc, st);
3094         if (frame_aspect_ratio)
3095             ost->frame_aspect_ratio = parse_frame_aspect_ratio(frame_aspect_ratio);
3096
3097         MATCH_PER_STREAM_OPT(frame_pix_fmts, str, frame_pix_fmt, oc, st);
3098         if (frame_pix_fmt && (video_enc->pix_fmt = av_get_pix_fmt(frame_pix_fmt)) == PIX_FMT_NONE) {
3099             av_log(NULL, AV_LOG_FATAL, "Unknown pixel format requested: %s.\n", frame_pix_fmt);
3100             exit_program(1);
3101         }
3102         st->sample_aspect_ratio = video_enc->sample_aspect_ratio;
3103
3104         MATCH_PER_STREAM_OPT(intra_matrices, str, intra_matrix, oc, st);
3105         if (intra_matrix) {
3106             if (!(video_enc->intra_matrix = av_mallocz(sizeof(*video_enc->intra_matrix) * 64))) {
3107                 av_log(NULL, AV_LOG_FATAL, "Could not allocate memory for intra matrix.\n");
3108                 exit_program(1);
3109             }
3110             parse_matrix_coeffs(video_enc->intra_matrix, intra_matrix);
3111         }
3112         MATCH_PER_STREAM_OPT(inter_matrices, str, inter_matrix, oc, st);
3113         if (inter_matrix) {
3114             if (!(video_enc->inter_matrix = av_mallocz(sizeof(*video_enc->inter_matrix) * 64))) {
3115                 av_log(NULL, AV_LOG_FATAL, "Could not allocate memory for inter matrix.\n");
3116                 exit_program(1);
3117             }
3118             parse_matrix_coeffs(video_enc->inter_matrix, inter_matrix);
3119         }
3120
3121         MATCH_PER_STREAM_OPT(rc_overrides, str, p, oc, st);
3122         for(i=0; p; i++){
3123             int start, end, q;
3124             int e=sscanf(p, "%d,%d,%d", &start, &end, &q);
3125             if(e!=3){
3126                 av_log(NULL, AV_LOG_FATAL, "error parsing rc_override\n");
3127                 exit_program(1);
3128             }
3129             video_enc->rc_override=
3130                 av_realloc(video_enc->rc_override,
3131                            sizeof(RcOverride)*(i+1));
3132             video_enc->rc_override[i].start_frame= start;
3133             video_enc->rc_override[i].end_frame  = end;
3134             if(q>0){
3135                 video_enc->rc_override[i].qscale= q;
3136                 video_enc->rc_override[i].quality_factor= 1.0;
3137             }
3138             else{
3139                 video_enc->rc_override[i].qscale= 0;
3140                 video_enc->rc_override[i].quality_factor= -q/100.0;
3141             }
3142             p= strchr(p, '/');
3143             if(p) p++;
3144         }
3145         video_enc->rc_override_count=i;
3146         if (!video_enc->rc_initial_buffer_occupancy)
3147             video_enc->rc_initial_buffer_occupancy = video_enc->rc_buffer_size*3/4;
3148         video_enc->intra_dc_precision= intra_dc_precision - 8;
3149
3150         /* two pass mode */
3151         if (do_pass) {
3152             if (do_pass == 1) {
3153                 video_enc->flags |= CODEC_FLAG_PASS1;
3154             } else {
3155                 video_enc->flags |= CODEC_FLAG_PASS2;
3156             }
3157         }
3158
3159         MATCH_PER_STREAM_OPT(forced_key_frames, str, forced_key_frames, oc, st);
3160         if (forced_key_frames)
3161             parse_forced_key_frames(forced_key_frames, ost, video_enc);
3162
3163         MATCH_PER_STREAM_OPT(force_fps, i, force_fps, oc, st);
3164         ost->force_fps = force_fps;
3165
3166         MATCH_PER_STREAM_OPT(top_field_first, i, top_field_first, oc, st);
3167         ost->top_field_first = top_field_first;
3168
3169 #if CONFIG_AVFILTER
3170         MATCH_PER_STREAM_OPT(filters, str, filters, oc, st);
3171         if (filters)
3172             ost->avfilter = av_strdup(filters);
3173 #endif
3174     }
3175
3176     return ost;
3177 }
3178
3179 static OutputStream *new_audio_stream(OptionsContext *o, AVFormatContext *oc)
3180 {
3181     AVStream *st;
3182     OutputStream *ost;
3183     AVCodecContext *audio_enc;
3184
3185     ost = new_output_stream(o, oc, AVMEDIA_TYPE_AUDIO);
3186     st  = ost->st;
3187
3188     audio_enc = st->codec;
3189     audio_enc->codec_type = AVMEDIA_TYPE_AUDIO;
3190
3191     if (!st->stream_copy) {
3192         char *sample_fmt = NULL;
3193
3194         MATCH_PER_STREAM_OPT(audio_channels, i, audio_enc->channels, oc, st);
3195
3196         MATCH_PER_STREAM_OPT(sample_fmts, str, sample_fmt, oc, st);
3197         if (sample_fmt &&
3198             (audio_enc->sample_fmt = av_get_sample_fmt(sample_fmt)) == AV_SAMPLE_FMT_NONE) {
3199             av_log(NULL, AV_LOG_FATAL, "Invalid sample format '%s'\n", sample_fmt);
3200             exit_program(1);
3201         }
3202
3203         MATCH_PER_STREAM_OPT(audio_sample_rate, i, audio_enc->sample_rate, oc, st);
3204     }
3205
3206     return ost;
3207 }
3208
3209 static OutputStream *new_data_stream(OptionsContext *o, AVFormatContext *oc)
3210 {
3211     AVStream *st;
3212     OutputStream *ost;
3213
3214     ost = new_output_stream(o, oc, AVMEDIA_TYPE_DATA);
3215     st  = ost->st;
3216     if (!st->stream_copy) {
3217         av_log(NULL, AV_LOG_FATAL, "Data stream encoding not supported yet (only streamcopy)\n");
3218         exit_program(1);
3219     }
3220
3221     return ost;
3222 }
3223
3224 static OutputStream *new_attachment_stream(OptionsContext *o, AVFormatContext *oc)
3225 {
3226     OutputStream *ost = new_output_stream(o, oc, AVMEDIA_TYPE_ATTACHMENT);
3227     ost->st->stream_copy = 1;
3228     return ost;
3229 }
3230
3231 static OutputStream *new_subtitle_stream(OptionsContext *o, AVFormatContext *oc)
3232 {
3233     AVStream *st;
3234     OutputStream *ost;
3235     AVCodecContext *subtitle_enc;
3236
3237     ost = new_output_stream(o, oc, AVMEDIA_TYPE_SUBTITLE);
3238     st  = ost->st;
3239     subtitle_enc = st->codec;
3240
3241     subtitle_enc->codec_type = AVMEDIA_TYPE_SUBTITLE;
3242
3243     return ost;
3244 }
3245
3246 /* arg format is "output-stream-index:streamid-value". */
3247 static int opt_streamid(OptionsContext *o, const char *opt, const char *arg)
3248 {
3249     int idx;
3250     char *p;
3251     char idx_str[16];
3252
3253     av_strlcpy(idx_str, arg, sizeof(idx_str));
3254     p = strchr(idx_str, ':');
3255     if (!p) {
3256         av_log(NULL, AV_LOG_FATAL,
3257                "Invalid value '%s' for option '%s', required syntax is 'index:value'\n",
3258                arg, opt);
3259         exit_program(1);
3260     }
3261     *p++ = '\0';
3262     idx = parse_number_or_die(opt, idx_str, OPT_INT, 0, INT_MAX);
3263     o->streamid_map = grow_array(o->streamid_map, sizeof(*o->streamid_map), &o->nb_streamid_map, idx+1);
3264     o->streamid_map[idx] = parse_number_or_die(opt, p, OPT_INT, 0, INT_MAX);
3265     return 0;
3266 }
3267
3268 static int copy_chapters(InputFile *ifile, OutputFile *ofile, int copy_metadata)
3269 {
3270     AVFormatContext *is = ifile->ctx;
3271     AVFormatContext *os = ofile->ctx;
3272     int i;
3273
3274     for (i = 0; i < is->nb_chapters; i++) {
3275         AVChapter *in_ch = is->chapters[i], *out_ch;
3276         int64_t ts_off   = av_rescale_q(ofile->start_time - ifile->ts_offset,
3277                                       AV_TIME_BASE_Q, in_ch->time_base);
3278         int64_t rt       = (ofile->recording_time == INT64_MAX) ? INT64_MAX :
3279                            av_rescale_q(ofile->recording_time, AV_TIME_BASE_Q, in_ch->time_base);
3280
3281
3282         if (in_ch->end < ts_off)
3283             continue;
3284         if (rt != INT64_MAX && in_ch->start > rt + ts_off)
3285             break;
3286
3287         out_ch = av_mallocz(sizeof(AVChapter));
3288         if (!out_ch)
3289             return AVERROR(ENOMEM);
3290
3291         out_ch->id        = in_ch->id;
3292         out_ch->time_base = in_ch->time_base;
3293         out_ch->start     = FFMAX(0,  in_ch->start - ts_off);
3294         out_ch->end       = FFMIN(rt, in_ch->end   - ts_off);
3295
3296         if (copy_metadata)
3297             av_dict_copy(&out_ch->metadata, in_ch->metadata, 0);
3298
3299         os->nb_chapters++;
3300         os->chapters = av_realloc(os->chapters, sizeof(AVChapter)*os->nb_chapters);
3301         if (!os->chapters)
3302             return AVERROR(ENOMEM);
3303         os->chapters[os->nb_chapters - 1] = out_ch;
3304     }
3305     return 0;
3306 }
3307
3308 static int read_avserver_streams(OptionsContext *o, AVFormatContext *s, const char *filename)
3309 {
3310     int i, err;
3311     AVFormatContext *ic = NULL;
3312
3313     err = avformat_open_input(&ic, filename, NULL, NULL);
3314     if (err < 0)
3315         return err;
3316     /* copy stream format */
3317     for(i=0;i<ic->nb_streams;i++) {
3318         AVStream *st;
3319         OutputStream *ost;
3320         AVCodec *codec;
3321
3322         codec = avcodec_find_encoder(ic->streams[i]->codec->codec_id);
3323         ost   = new_output_stream(o, s, codec->type);
3324         st    = ost->st;
3325
3326         // FIXME: a more elegant solution is needed
3327         memcpy(st, ic->streams[i], sizeof(AVStream));
3328         st->info = NULL;
3329         avcodec_copy_context(st->codec, ic->streams[i]->codec);
3330
3331         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO && !st->stream_copy)
3332             choose_sample_fmt(st, codec);
3333         else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && !st->stream_copy)
3334             choose_pixel_fmt(st, codec);
3335     }
3336
3337     av_close_input_file(ic);
3338     return 0;
3339 }
3340
3341 static void opt_output_file(void *optctx, const char *filename)
3342 {
3343     OptionsContext *o = optctx;
3344     AVFormatContext *oc;
3345     int i, err;
3346     AVOutputFormat *file_oformat;
3347     OutputStream *ost;
3348     InputStream  *ist;
3349
3350     if (!strcmp(filename, "-"))
3351         filename = "pipe:";
3352
3353     oc = avformat_alloc_context();
3354     if (!oc) {
3355         print_error(filename, AVERROR(ENOMEM));
3356         exit_program(1);
3357     }
3358
3359     if (o->format) {
3360         file_oformat = av_guess_format(o->format, NULL, NULL);
3361         if (!file_oformat) {
3362             av_log(NULL, AV_LOG_FATAL, "Requested output format '%s' is not a suitable output format\n", o->format);
3363             exit_program(1);
3364         }
3365     } else {
3366         file_oformat = av_guess_format(NULL, filename, NULL);
3367         if (!file_oformat) {
3368             av_log(NULL, AV_LOG_FATAL, "Unable to find a suitable output format for '%s'\n",
3369                    filename);
3370             exit_program(1);
3371         }
3372     }
3373
3374     oc->oformat = file_oformat;
3375     av_strlcpy(oc->filename, filename, sizeof(oc->filename));
3376
3377     if (!strcmp(file_oformat->name, "ffm") &&
3378         av_strstart(filename, "http:", NULL)) {
3379         /* special case for files sent to avserver: we get the stream
3380            parameters from avserver */
3381         int err = read_avserver_streams(o, oc, filename);
3382         if (err < 0) {
3383             print_error(filename, err);
3384             exit_program(1);
3385         }
3386     } else if (!o->nb_stream_maps) {
3387         /* pick the "best" stream of each type */
3388 #define NEW_STREAM(type, index)\
3389         if (index >= 0) {\
3390             ost = new_ ## type ## _stream(o, oc);\
3391             ost->source_index = index;\
3392             ost->sync_ist     = &input_streams[index];\
3393             input_streams[index].discard = 0;\
3394         }
3395
3396         /* video: highest resolution */
3397         if (!o->video_disable && oc->oformat->video_codec != CODEC_ID_NONE) {
3398             int area = 0, idx = -1;
3399             for (i = 0; i < nb_input_streams; i++) {
3400                 ist = &input_streams[i];
3401                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
3402                     ist->st->codec->width * ist->st->codec->height > area) {
3403                     area = ist->st->codec->width * ist->st->codec->height;
3404                     idx = i;
3405                 }
3406             }
3407             NEW_STREAM(video, idx);
3408         }
3409
3410         /* audio: most channels */
3411         if (!o->audio_disable && oc->oformat->audio_codec != CODEC_ID_NONE) {
3412             int channels = 0, idx = -1;
3413             for (i = 0; i < nb_input_streams; i++) {
3414                 ist = &input_streams[i];
3415                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
3416                     ist->st->codec->channels > channels) {
3417                     channels = ist->st->codec->channels;
3418                     idx = i;
3419                 }
3420             }
3421             NEW_STREAM(audio, idx);
3422         }
3423
3424         /* subtitles: pick first */
3425         if (!o->subtitle_disable && oc->oformat->subtitle_codec != CODEC_ID_NONE) {
3426             for (i = 0; i < nb_input_streams; i++)
3427                 if (input_streams[i].st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3428                     NEW_STREAM(subtitle, i);
3429                     break;
3430                 }
3431         }
3432         /* do something with data? */
3433     } else {
3434         for (i = 0; i < o->nb_stream_maps; i++) {
3435             StreamMap *map = &o->stream_maps[i];
3436
3437             if (map->disabled)
3438                 continue;
3439
3440             ist = &input_streams[input_files[map->file_index].ist_index + map->stream_index];
3441             switch (ist->st->codec->codec_type) {
3442             case AVMEDIA_TYPE_VIDEO:    ost = new_video_stream(o, oc);    break;
3443             case AVMEDIA_TYPE_AUDIO:    ost = new_audio_stream(o, oc);    break;
3444             case AVMEDIA_TYPE_SUBTITLE: ost = new_subtitle_stream(o, oc); break;
3445             case AVMEDIA_TYPE_DATA:     ost = new_data_stream(o, oc);     break;
3446             case AVMEDIA_TYPE_ATTACHMENT: ost = new_attachment_stream(o, oc); break;
3447             default:
3448                 av_log(NULL, AV_LOG_FATAL, "Cannot map stream #%d.%d - unsupported type.\n",
3449                        map->file_index, map->stream_index);
3450                 exit_program(1);
3451             }
3452
3453             ost->source_index = input_files[map->file_index].ist_index + map->stream_index;
3454             ost->sync_ist = &input_streams[input_files[map->sync_file_index].ist_index +
3455                                            map->sync_stream_index];
3456             ist->discard = 0;
3457         }
3458     }
3459
3460     output_files = grow_array(output_files, sizeof(*output_files), &nb_output_files, nb_output_files + 1);
3461     output_files[nb_output_files - 1].ctx       = oc;
3462     output_files[nb_output_files - 1].ost_index = nb_output_streams - oc->nb_streams;
3463     output_files[nb_output_files - 1].recording_time = o->recording_time;
3464     output_files[nb_output_files - 1].start_time     = o->start_time;
3465     output_files[nb_output_files - 1].limit_filesize = o->limit_filesize;
3466     av_dict_copy(&output_files[nb_output_files - 1].opts, format_opts, 0);
3467
3468     /* check filename in case of an image number is expected */
3469     if (oc->oformat->flags & AVFMT_NEEDNUMBER) {
3470         if (!av_filename_number_test(oc->filename)) {
3471             print_error(oc->filename, AVERROR(EINVAL));
3472             exit_program(1);
3473         }
3474     }
3475
3476     if (!(oc->oformat->flags & AVFMT_NOFILE)) {
3477         /* test if it already exists to avoid loosing precious files */
3478         if (!file_overwrite &&
3479             (strchr(filename, ':') == NULL ||
3480              filename[1] == ':' ||
3481              av_strstart(filename, "file:", NULL))) {
3482             if (avio_check(filename, 0) == 0) {
3483                 if (!using_stdin) {
3484                     fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
3485                     fflush(stderr);
3486                     if (!read_yesno()) {
3487                         fprintf(stderr, "Not overwriting - exiting\n");
3488                         exit_program(1);
3489                     }
3490                 }
3491                 else {
3492                     fprintf(stderr,"File '%s' already exists. Exiting.\n", filename);
3493                     exit_program(1);
3494                 }
3495             }
3496         }
3497
3498         /* open the file */
3499         if ((err = avio_open(&oc->pb, filename, AVIO_FLAG_WRITE)) < 0) {
3500             print_error(filename, err);
3501             exit_program(1);
3502         }
3503     }
3504
3505     oc->preload   = (int)(o->mux_preload   * AV_TIME_BASE);
3506     oc->max_delay = (int)(o->mux_max_delay * AV_TIME_BASE);
3507     oc->flags |= AVFMT_FLAG_NONBLOCK;
3508
3509     /* copy chapters */
3510     if (o->chapters_input_file >= nb_input_files) {
3511         if (o->chapters_input_file == INT_MAX) {
3512             /* copy chapters from the first input file that has them*/
3513             o->chapters_input_file = -1;
3514             for (i = 0; i < nb_input_files; i++)
3515                 if (input_files[i].ctx->nb_chapters) {
3516                     o->chapters_input_file = i;
3517                     break;
3518                 }
3519         } else {
3520             av_log(NULL, AV_LOG_FATAL, "Invalid input file index %d in chapter mapping.\n",
3521                    o->chapters_input_file);
3522             exit_program(1);
3523         }
3524     }
3525     if (o->chapters_input_file >= 0)
3526         copy_chapters(&input_files[o->chapters_input_file], &output_files[nb_output_files - 1],
3527                       !o->metadata_chapters_manual);
3528
3529     /* copy metadata */
3530     for (i = 0; i < o->nb_meta_data_maps; i++) {
3531         AVFormatContext *files[2];
3532         AVDictionary    **meta[2];
3533         int j;
3534
3535 #define METADATA_CHECK_INDEX(index, nb_elems, desc)\
3536         if ((index) < 0 || (index) >= (nb_elems)) {\
3537             av_log(NULL, AV_LOG_FATAL, "Invalid %s index %d while processing metadata maps\n",\
3538                      (desc), (index));\
3539             exit_program(1);\
3540         }
3541
3542         int in_file_index = o->meta_data_maps[i][1].file;
3543         if (in_file_index < 0)
3544             continue;
3545         METADATA_CHECK_INDEX(in_file_index, nb_input_files, "input file")
3546
3547         files[0] = oc;
3548         files[1] = input_files[in_file_index].ctx;
3549
3550         for (j = 0; j < 2; j++) {
3551             MetadataMap *map = &o->meta_data_maps[i][j];
3552
3553             switch (map->type) {
3554             case 'g':
3555                 meta[j] = &files[j]->metadata;
3556                 break;
3557             case 's':
3558                 METADATA_CHECK_INDEX(map->index, files[j]->nb_streams, "stream")
3559                 meta[j] = &files[j]->streams[map->index]->metadata;
3560                 break;
3561             case 'c':
3562                 METADATA_CHECK_INDEX(map->index, files[j]->nb_chapters, "chapter")
3563                 meta[j] = &files[j]->chapters[map->index]->metadata;
3564                 break;
3565             case 'p':
3566                 METADATA_CHECK_INDEX(map->index, files[j]->nb_programs, "program")
3567                 meta[j] = &files[j]->programs[map->index]->metadata;
3568                 break;
3569             }
3570         }
3571
3572         av_dict_copy(meta[0], *meta[1], AV_DICT_DONT_OVERWRITE);
3573     }
3574
3575     /* copy global metadata by default */
3576     if (!o->metadata_global_manual && nb_input_files)
3577         av_dict_copy(&oc->metadata, input_files[0].ctx->metadata,
3578                      AV_DICT_DONT_OVERWRITE);
3579     if (!o->metadata_streams_manual)
3580         for (i = output_files[nb_output_files - 1].ost_index; i < nb_output_streams; i++) {
3581             InputStream *ist = &input_streams[output_streams[i].source_index];
3582             av_dict_copy(&output_streams[i].st->metadata, ist->st->metadata, AV_DICT_DONT_OVERWRITE);
3583         }
3584
3585     /* process manually set metadata */
3586     for (i = 0; i < o->nb_metadata; i++) {
3587         AVDictionary **m;
3588         char type, *val;
3589         int index = 0;
3590
3591         val = strchr(o->metadata[i].u.str, '=');
3592         if (!val) {
3593             av_log(NULL, AV_LOG_FATAL, "No '=' character in metadata string %s.\n",
3594                    o->metadata[i].u.str);
3595             exit_program(1);
3596         }
3597         *val++ = 0;
3598
3599         parse_meta_type(o->metadata[i].specifier, &type, &index);
3600         switch (type) {
3601         case 'g':
3602             m = &oc->metadata;
3603             break;
3604         case 's':
3605             if (index < 0 || index >= oc->nb_streams) {
3606                 av_log(NULL, AV_LOG_FATAL, "Invalid stream index %d in metadata specifier.\n", index);
3607                 exit_program(1);
3608             }
3609             m = &oc->streams[index]->metadata;
3610             break;
3611         case 'c':
3612             if (index < 0 || index >= oc->nb_chapters) {
3613                 av_log(NULL, AV_LOG_FATAL, "Invalid chapter index %d in metadata specifier.\n", index);
3614                 exit_program(1);
3615             }
3616             m = &oc->chapters[index]->metadata;
3617             break;
3618         default:
3619             av_log(NULL, AV_LOG_FATAL, "Invalid metadata specifier %s.\n", o->metadata[i].specifier);
3620             exit_program(1);
3621         }
3622
3623         av_dict_set(m, o->metadata[i].u.str, *val ? val : NULL, 0);
3624     }
3625
3626     reset_options(o);