libspeexenc: add libspeex encoder
[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 int print_stats = 1;
136
137 static uint8_t *audio_buf;
138 static uint8_t *audio_out;
139 static unsigned int allocated_audio_out_size, allocated_audio_buf_size;
140
141 static void *samples;
142
143 #define DEFAULT_PASS_LOGFILENAME_PREFIX "av2pass"
144
145 typedef struct InputStream {
146     int file_index;
147     AVStream *st;
148     int discard;             /* true if stream data should be discarded */
149     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
150     AVCodec *dec;
151
152     int64_t       start;     /* time when read started */
153     int64_t       next_pts;  /* synthetic pts for cases where pkt.pts
154                                 is not defined */
155     int64_t       pts;       /* current pts */
156     PtsCorrectionContext pts_ctx;
157     double ts_scale;
158     int is_start;            /* is 1 at the start and after a discontinuity */
159     int showed_multi_packet_warning;
160     AVDictionary *opts;
161 } InputStream;
162
163 typedef struct InputFile {
164     AVFormatContext *ctx;
165     int eof_reached;      /* true if eof reached */
166     int ist_index;        /* index of first stream in ist_table */
167     int buffer_size;      /* current total buffer size */
168     int64_t ts_offset;
169     int nb_streams;       /* number of stream that avconv is aware of; may be different
170                              from ctx.nb_streams if new streams appear during av_read_frame() */
171     int rate_emu;
172 } InputFile;
173
174 typedef struct OutputStream {
175     int file_index;          /* file index */
176     int index;               /* stream index in the output file */
177     int source_index;        /* InputStream index */
178     AVStream *st;            /* stream in the output file */
179     int encoding_needed;     /* true if encoding needed for this stream */
180     int frame_number;
181     /* input pts and corresponding output pts
182        for A/V sync */
183     //double sync_ipts;        /* dts from the AVPacket of the demuxer in second units */
184     struct InputStream *sync_ist; /* input stream to sync against */
185     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ //FIXME look at frame_number
186     AVBitStreamFilterContext *bitstream_filters;
187     AVCodec *enc;
188     int64_t max_frames;
189
190     /* video only */
191     int video_resample;
192     AVFrame pict_tmp;      /* temporary image for resampling */
193     struct SwsContext *img_resample_ctx; /* for image resampling */
194     int resample_height;
195     int resample_width;
196     int resample_pix_fmt;
197     AVRational frame_rate;
198     int force_fps;
199     int top_field_first;
200
201     float frame_aspect_ratio;
202
203     /* forced key frames */
204     int64_t *forced_kf_pts;
205     int forced_kf_count;
206     int forced_kf_index;
207
208     /* audio only */
209     int audio_resample;
210     ReSampleContext *resample; /* for audio resampling */
211     int resample_sample_fmt;
212     int resample_channels;
213     int resample_sample_rate;
214     int reformat_pair;
215     AVAudioConvert *reformat_ctx;
216     AVFifoBuffer *fifo;     /* for compression: one audio fifo per codec */
217     FILE *logfile;
218
219 #if CONFIG_AVFILTER
220     AVFilterContext *output_video_filter;
221     AVFilterContext *input_video_filter;
222     AVFilterBufferRef *picref;
223     char *avfilter;
224     AVFilterGraph *graph;
225 #endif
226
227    int64_t sws_flags;
228    AVDictionary *opts;
229    int is_past_recording_time;
230 } OutputStream;
231
232
233 typedef struct OutputFile {
234     AVFormatContext *ctx;
235     AVDictionary *opts;
236     int ost_index;       /* index of the first stream in output_streams */
237     int64_t recording_time; /* desired length of the resulting file in microseconds */
238     int64_t start_time;     /* start time in microseconds */
239     uint64_t limit_filesize;
240 } OutputFile;
241
242 static InputStream *input_streams = NULL;
243 static int         nb_input_streams = 0;
244 static InputFile   *input_files   = NULL;
245 static int         nb_input_files   = 0;
246
247 static OutputStream *output_streams = NULL;
248 static int        nb_output_streams = 0;
249 static OutputFile   *output_files   = NULL;
250 static int        nb_output_files   = 0;
251
252 typedef struct OptionsContext {
253     /* input/output options */
254     int64_t start_time;
255     const char *format;
256
257     SpecifierOpt *codec_names;
258     int        nb_codec_names;
259     SpecifierOpt *audio_channels;
260     int        nb_audio_channels;
261     SpecifierOpt *audio_sample_rate;
262     int        nb_audio_sample_rate;
263     SpecifierOpt *frame_rates;
264     int        nb_frame_rates;
265     SpecifierOpt *frame_sizes;
266     int        nb_frame_sizes;
267     SpecifierOpt *frame_pix_fmts;
268     int        nb_frame_pix_fmts;
269
270     /* input options */
271     int64_t input_ts_offset;
272     int rate_emu;
273
274     SpecifierOpt *ts_scale;
275     int        nb_ts_scale;
276
277     /* output options */
278     StreamMap *stream_maps;
279     int     nb_stream_maps;
280     /* first item specifies output metadata, second is input */
281     MetadataMap (*meta_data_maps)[2];
282     int nb_meta_data_maps;
283     int metadata_global_manual;
284     int metadata_streams_manual;
285     int metadata_chapters_manual;
286
287     int chapters_input_file;
288
289     int64_t recording_time;
290     uint64_t limit_filesize;
291     float mux_preload;
292     float mux_max_delay;
293
294     int video_disable;
295     int audio_disable;
296     int subtitle_disable;
297     int data_disable;
298
299     /* indexed by output file stream index */
300     int   *streamid_map;
301     int nb_streamid_map;
302
303     SpecifierOpt *metadata;
304     int        nb_metadata;
305     SpecifierOpt *max_frames;
306     int        nb_max_frames;
307     SpecifierOpt *bitstream_filters;
308     int        nb_bitstream_filters;
309     SpecifierOpt *codec_tags;
310     int        nb_codec_tags;
311     SpecifierOpt *sample_fmts;
312     int        nb_sample_fmts;
313     SpecifierOpt *qscale;
314     int        nb_qscale;
315     SpecifierOpt *forced_key_frames;
316     int        nb_forced_key_frames;
317     SpecifierOpt *force_fps;
318     int        nb_force_fps;
319     SpecifierOpt *frame_aspect_ratios;
320     int        nb_frame_aspect_ratios;
321     SpecifierOpt *rc_overrides;
322     int        nb_rc_overrides;
323     SpecifierOpt *intra_matrices;
324     int        nb_intra_matrices;
325     SpecifierOpt *inter_matrices;
326     int        nb_inter_matrices;
327     SpecifierOpt *top_field_first;
328     int        nb_top_field_first;
329     SpecifierOpt *presets;
330     int        nb_presets;
331 #if CONFIG_AVFILTER
332     SpecifierOpt *filters;
333     int        nb_filters;
334 #endif
335 } OptionsContext;
336
337 #define MATCH_PER_STREAM_OPT(name, type, outvar, fmtctx, st)\
338 {\
339     int i, ret;\
340     for (i = 0; i < o->nb_ ## name; i++) {\
341         char *spec = o->name[i].specifier;\
342         if ((ret = check_stream_specifier(fmtctx, st, spec)) > 0)\
343             outvar = o->name[i].u.type;\
344         else if (ret < 0)\
345             exit_program(1);\
346     }\
347 }
348
349 static void reset_options(OptionsContext *o)
350 {
351     const OptionDef *po = options;
352
353     /* all OPT_SPEC and OPT_STRING can be freed in generic way */
354     while (po->name) {
355         void *dst = (uint8_t*)o + po->u.off;
356
357         if (po->flags & OPT_SPEC) {
358             SpecifierOpt **so = dst;
359             int i, *count = (int*)(so + 1);
360             for (i = 0; i < *count; i++) {
361                 av_freep(&(*so)[i].specifier);
362                 if (po->flags & OPT_STRING)
363                     av_freep(&(*so)[i].u.str);
364             }
365             av_freep(so);
366             *count = 0;
367         } else if (po->flags & OPT_OFFSET && po->flags & OPT_STRING)
368             av_freep(dst);
369         po++;
370     }
371
372     av_freep(&o->stream_maps);
373     av_freep(&o->meta_data_maps);
374     av_freep(&o->streamid_map);
375
376     memset(o, 0, sizeof(*o));
377
378     o->mux_preload    = 0.5;
379     o->mux_max_delay  = 0.7;
380     o->recording_time = INT64_MAX;
381     o->limit_filesize = UINT64_MAX;
382     o->chapters_input_file = INT_MAX;
383
384     uninit_opts();
385     init_opts();
386 }
387
388 #if CONFIG_AVFILTER
389
390 static int configure_video_filters(InputStream *ist, OutputStream *ost)
391 {
392     AVFilterContext *last_filter, *filter;
393     /** filter graph containing all filters including input & output */
394     AVCodecContext *codec = ost->st->codec;
395     AVCodecContext *icodec = ist->st->codec;
396     FFSinkContext ffsink_ctx = { .pix_fmt = codec->pix_fmt };
397     AVRational sample_aspect_ratio;
398     char args[255];
399     int ret;
400
401     ost->graph = avfilter_graph_alloc();
402
403     if (ist->st->sample_aspect_ratio.num){
404         sample_aspect_ratio = ist->st->sample_aspect_ratio;
405     }else
406         sample_aspect_ratio = ist->st->codec->sample_aspect_ratio;
407
408     snprintf(args, 255, "%d:%d:%d:%d:%d:%d:%d", ist->st->codec->width,
409              ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE,
410              sample_aspect_ratio.num, sample_aspect_ratio.den);
411
412     ret = avfilter_graph_create_filter(&ost->input_video_filter, avfilter_get_by_name("buffer"),
413                                        "src", args, NULL, ost->graph);
414     if (ret < 0)
415         return ret;
416     ret = avfilter_graph_create_filter(&ost->output_video_filter, &ffsink,
417                                        "out", NULL, &ffsink_ctx, ost->graph);
418     if (ret < 0)
419         return ret;
420     last_filter = ost->input_video_filter;
421
422     if (codec->width  != icodec->width || codec->height != icodec->height) {
423         snprintf(args, 255, "%d:%d:flags=0x%X",
424                  codec->width,
425                  codec->height,
426                  (unsigned)ost->sws_flags);
427         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
428                                                 NULL, args, NULL, ost->graph)) < 0)
429             return ret;
430         if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
431             return ret;
432         last_filter = filter;
433     }
434
435     snprintf(args, sizeof(args), "flags=0x%X", (unsigned)ost->sws_flags);
436     ost->graph->scale_sws_opts = av_strdup(args);
437
438     if (ost->avfilter) {
439         AVFilterInOut *outputs = av_malloc(sizeof(AVFilterInOut));
440         AVFilterInOut *inputs  = av_malloc(sizeof(AVFilterInOut));
441
442         outputs->name    = av_strdup("in");
443         outputs->filter_ctx = last_filter;
444         outputs->pad_idx = 0;
445         outputs->next    = NULL;
446
447         inputs->name    = av_strdup("out");
448         inputs->filter_ctx = ost->output_video_filter;
449         inputs->pad_idx = 0;
450         inputs->next    = NULL;
451
452         if ((ret = avfilter_graph_parse(ost->graph, ost->avfilter, inputs, outputs, NULL)) < 0)
453             return ret;
454         av_freep(&ost->avfilter);
455     } else {
456         if ((ret = avfilter_link(last_filter, 0, ost->output_video_filter, 0)) < 0)
457             return ret;
458     }
459
460     if ((ret = avfilter_graph_config(ost->graph, NULL)) < 0)
461         return ret;
462
463     codec->width  = ost->output_video_filter->inputs[0]->w;
464     codec->height = ost->output_video_filter->inputs[0]->h;
465     codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
466         ost->frame_aspect_ratio ? // overridden by the -aspect cli option
467         av_d2q(ost->frame_aspect_ratio*codec->height/codec->width, 255) :
468         ost->output_video_filter->inputs[0]->sample_aspect_ratio;
469
470     return 0;
471 }
472 #endif /* CONFIG_AVFILTER */
473
474 static void term_exit(void)
475 {
476     av_log(NULL, AV_LOG_QUIET, "");
477 }
478
479 static volatile int received_sigterm = 0;
480 static volatile int received_nb_signals = 0;
481
482 static void
483 sigterm_handler(int sig)
484 {
485     received_sigterm = sig;
486     received_nb_signals++;
487     term_exit();
488 }
489
490 static void term_init(void)
491 {
492     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).  */
493     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
494 #ifdef SIGXCPU
495     signal(SIGXCPU, sigterm_handler);
496 #endif
497 }
498
499 static int decode_interrupt_cb(void)
500 {
501     return received_nb_signals > 1;
502 }
503
504 void exit_program(int ret)
505 {
506     int i;
507
508     /* close files */
509     for(i=0;i<nb_output_files;i++) {
510         AVFormatContext *s = output_files[i].ctx;
511         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
512             avio_close(s->pb);
513         avformat_free_context(s);
514         av_dict_free(&output_files[i].opts);
515     }
516     for(i=0;i<nb_input_files;i++) {
517         av_close_input_file(input_files[i].ctx);
518     }
519     for (i = 0; i < nb_input_streams; i++)
520         av_dict_free(&input_streams[i].opts);
521
522     if (vstats_file)
523         fclose(vstats_file);
524     av_free(vstats_filename);
525
526     av_freep(&input_streams);
527     av_freep(&input_files);
528     av_freep(&output_streams);
529     av_freep(&output_files);
530
531     uninit_opts();
532     av_free(audio_buf);
533     av_free(audio_out);
534     allocated_audio_buf_size= allocated_audio_out_size= 0;
535     av_free(samples);
536
537 #if CONFIG_AVFILTER
538     avfilter_uninit();
539 #endif
540
541     if (received_sigterm) {
542         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
543                (int) received_sigterm);
544         exit (255);
545     }
546
547     exit(ret); /* not all OS-es handle main() return value */
548 }
549
550 static void assert_avoptions(AVDictionary *m)
551 {
552     AVDictionaryEntry *t;
553     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
554         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
555         exit_program(1);
556     }
557 }
558
559 static void assert_codec_experimental(AVCodecContext *c, int encoder)
560 {
561     const char *codec_string = encoder ? "encoder" : "decoder";
562     AVCodec *codec;
563     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
564         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
565         av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
566                 "results.\nAdd '-strict experimental' if you want to use it.\n",
567                 codec_string, c->codec->name);
568         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
569         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
570             av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
571                    codec_string, codec->name);
572         exit_program(1);
573     }
574 }
575
576 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
577 {
578     if(codec && codec->sample_fmts){
579         const enum AVSampleFormat *p= codec->sample_fmts;
580         for(; *p!=-1; p++){
581             if(*p == st->codec->sample_fmt)
582                 break;
583         }
584         if (*p == -1) {
585             av_log(NULL, AV_LOG_WARNING,
586                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
587                    av_get_sample_fmt_name(st->codec->sample_fmt),
588                    codec->name,
589                    av_get_sample_fmt_name(codec->sample_fmts[0]));
590             st->codec->sample_fmt = codec->sample_fmts[0];
591         }
592     }
593 }
594
595 /**
596  * Update the requested input sample format based on the output sample format.
597  * This is currently only used to request float output from decoders which
598  * support multiple sample formats, one of which is AV_SAMPLE_FMT_FLT.
599  * Ideally this will be removed in the future when decoders do not do format
600  * conversion and only output in their native format.
601  */
602 static void update_sample_fmt(AVCodecContext *dec, AVCodec *dec_codec,
603                               AVCodecContext *enc)
604 {
605     /* if sample formats match or a decoder sample format has already been
606        requested, just return */
607     if (enc->sample_fmt == dec->sample_fmt ||
608         dec->request_sample_fmt > AV_SAMPLE_FMT_NONE)
609         return;
610
611     /* if decoder supports more than one output format */
612     if (dec_codec && dec_codec->sample_fmts &&
613         dec_codec->sample_fmts[0] != AV_SAMPLE_FMT_NONE &&
614         dec_codec->sample_fmts[1] != AV_SAMPLE_FMT_NONE) {
615         const enum AVSampleFormat *p;
616         int min_dec = -1, min_inc = -1;
617
618         /* find a matching sample format in the encoder */
619         for (p = dec_codec->sample_fmts; *p != AV_SAMPLE_FMT_NONE; p++) {
620             if (*p == enc->sample_fmt) {
621                 dec->request_sample_fmt = *p;
622                 return;
623             } else if (*p > enc->sample_fmt) {
624                 min_inc = FFMIN(min_inc, *p - enc->sample_fmt);
625             } else
626                 min_dec = FFMIN(min_dec, enc->sample_fmt - *p);
627         }
628
629         /* if none match, provide the one that matches quality closest */
630         dec->request_sample_fmt = min_inc > 0 ? enc->sample_fmt + min_inc :
631                                   enc->sample_fmt - min_dec;
632     }
633 }
634
635 static void choose_sample_rate(AVStream *st, AVCodec *codec)
636 {
637     if(codec && codec->supported_samplerates){
638         const int *p= codec->supported_samplerates;
639         int best=0;
640         int best_dist=INT_MAX;
641         for(; *p; p++){
642             int dist= abs(st->codec->sample_rate - *p);
643             if(dist < best_dist){
644                 best_dist= dist;
645                 best= *p;
646             }
647         }
648         if(best_dist){
649             av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
650         }
651         st->codec->sample_rate= best;
652     }
653 }
654
655 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
656 {
657     if(codec && codec->pix_fmts){
658         const enum PixelFormat *p= codec->pix_fmts;
659         if(st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL){
660             if(st->codec->codec_id==CODEC_ID_MJPEG){
661                 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE};
662             }else if(st->codec->codec_id==CODEC_ID_LJPEG){
663                 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};
664             }
665         }
666         for(; *p!=-1; p++){
667             if(*p == st->codec->pix_fmt)
668                 break;
669         }
670         if (*p == -1) {
671             if(st->codec->pix_fmt != PIX_FMT_NONE)
672                 av_log(NULL, AV_LOG_WARNING,
673                         "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
674                         av_pix_fmt_descriptors[st->codec->pix_fmt].name,
675                         codec->name,
676                         av_pix_fmt_descriptors[codec->pix_fmts[0]].name);
677             st->codec->pix_fmt = codec->pix_fmts[0];
678         }
679     }
680 }
681
682 static double
683 get_sync_ipts(const OutputStream *ost)
684 {
685     const InputStream *ist = ost->sync_ist;
686     OutputFile *of = &output_files[ost->file_index];
687     return (double)(ist->pts - of->start_time)/AV_TIME_BASE;
688 }
689
690 static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc){
691     int ret;
692
693     while(bsfc){
694         AVPacket new_pkt= *pkt;
695         int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
696                                           &new_pkt.data, &new_pkt.size,
697                                           pkt->data, pkt->size,
698                                           pkt->flags & AV_PKT_FLAG_KEY);
699         if(a>0){
700             av_free_packet(pkt);
701             new_pkt.destruct= av_destruct_packet;
702         } else if(a<0){
703             av_log(NULL, AV_LOG_ERROR, "%s failed for stream %d, codec %s",
704                    bsfc->filter->name, pkt->stream_index,
705                    avctx->codec ? avctx->codec->name : "copy");
706             print_error("", a);
707             if (exit_on_error)
708                 exit_program(1);
709         }
710         *pkt= new_pkt;
711
712         bsfc= bsfc->next;
713     }
714
715     ret= av_interleaved_write_frame(s, pkt);
716     if(ret < 0){
717         print_error("av_interleaved_write_frame()", ret);
718         exit_program(1);
719     }
720 }
721
722 static void do_audio_out(AVFormatContext *s,
723                          OutputStream *ost,
724                          InputStream *ist,
725                          unsigned char *buf, int size)
726 {
727     uint8_t *buftmp;
728     int64_t audio_out_size, audio_buf_size;
729     int64_t allocated_for_size= size;
730
731     int size_out, frame_bytes, ret, resample_changed;
732     AVCodecContext *enc= ost->st->codec;
733     AVCodecContext *dec= ist->st->codec;
734     int osize = av_get_bytes_per_sample(enc->sample_fmt);
735     int isize = av_get_bytes_per_sample(dec->sample_fmt);
736     const int coded_bps = av_get_bits_per_sample(enc->codec->id);
737
738 need_realloc:
739     audio_buf_size= (allocated_for_size + isize*dec->channels - 1) / (isize*dec->channels);
740     audio_buf_size= (audio_buf_size*enc->sample_rate + dec->sample_rate) / dec->sample_rate;
741     audio_buf_size= audio_buf_size*2 + 10000; //safety factors for the deprecated resampling API
742     audio_buf_size= FFMAX(audio_buf_size, enc->frame_size);
743     audio_buf_size*= osize*enc->channels;
744
745     audio_out_size= FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
746     if(coded_bps > 8*osize)
747         audio_out_size= audio_out_size * coded_bps / (8*osize);
748     audio_out_size += FF_MIN_BUFFER_SIZE;
749
750     if(audio_out_size > INT_MAX || audio_buf_size > INT_MAX){
751         av_log(NULL, AV_LOG_FATAL, "Buffer sizes too large\n");
752         exit_program(1);
753     }
754
755     av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
756     av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
757     if (!audio_buf || !audio_out){
758         av_log(NULL, AV_LOG_FATAL, "Out of memory in do_audio_out\n");
759         exit_program(1);
760     }
761
762     if (enc->channels != dec->channels || enc->sample_rate != dec->sample_rate)
763         ost->audio_resample = 1;
764
765     resample_changed = ost->resample_sample_fmt  != dec->sample_fmt ||
766                        ost->resample_channels    != dec->channels   ||
767                        ost->resample_sample_rate != dec->sample_rate;
768
769     if ((ost->audio_resample && !ost->resample) || resample_changed) {
770         if (resample_changed) {
771             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",
772                    ist->file_index, ist->st->index,
773                    ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
774                    dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
775             ost->resample_sample_fmt  = dec->sample_fmt;
776             ost->resample_channels    = dec->channels;
777             ost->resample_sample_rate = dec->sample_rate;
778             if (ost->resample)
779                 audio_resample_close(ost->resample);
780         }
781         /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
782         if (audio_sync_method <= 1 &&
783             ost->resample_sample_fmt  == enc->sample_fmt &&
784             ost->resample_channels    == enc->channels   &&
785             ost->resample_sample_rate == enc->sample_rate) {
786             ost->resample = NULL;
787             ost->audio_resample = 0;
788         } else if (ost->audio_resample) {
789             if (dec->sample_fmt != AV_SAMPLE_FMT_S16)
790                 av_log(NULL, AV_LOG_WARNING, "Using s16 intermediate sample format for resampling\n");
791             ost->resample = av_audio_resample_init(enc->channels,    dec->channels,
792                                                    enc->sample_rate, dec->sample_rate,
793                                                    enc->sample_fmt,  dec->sample_fmt,
794                                                    16, 10, 0, 0.8);
795             if (!ost->resample) {
796                 av_log(NULL, AV_LOG_FATAL, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
797                        dec->channels, dec->sample_rate,
798                        enc->channels, enc->sample_rate);
799                 exit_program(1);
800             }
801         }
802     }
803
804 #define MAKE_SFMT_PAIR(a,b) ((a)+AV_SAMPLE_FMT_NB*(b))
805     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt &&
806         MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt)!=ost->reformat_pair) {
807         if (ost->reformat_ctx)
808             av_audio_convert_free(ost->reformat_ctx);
809         ost->reformat_ctx = av_audio_convert_alloc(enc->sample_fmt, 1,
810                                                    dec->sample_fmt, 1, NULL, 0);
811         if (!ost->reformat_ctx) {
812             av_log(NULL, AV_LOG_FATAL, "Cannot convert %s sample format to %s sample format\n",
813                    av_get_sample_fmt_name(dec->sample_fmt),
814                    av_get_sample_fmt_name(enc->sample_fmt));
815             exit_program(1);
816         }
817         ost->reformat_pair=MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt);
818     }
819
820     if(audio_sync_method){
821         double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
822                 - av_fifo_size(ost->fifo)/(enc->channels * 2);
823         double idelta= delta*dec->sample_rate / enc->sample_rate;
824         int byte_delta= ((int)idelta)*2*dec->channels;
825
826         //FIXME resample delay
827         if(fabs(delta) > 50){
828             if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
829                 if(byte_delta < 0){
830                     byte_delta= FFMAX(byte_delta, -size);
831                     size += byte_delta;
832                     buf  -= byte_delta;
833                     av_log(NULL, AV_LOG_VERBOSE, "discarding %d audio samples\n", (int)-delta);
834                     if(!size)
835                         return;
836                     ist->is_start=0;
837                 }else{
838                     static uint8_t *input_tmp= NULL;
839                     input_tmp= av_realloc(input_tmp, byte_delta + size);
840
841                     if(byte_delta > allocated_for_size - size){
842                         allocated_for_size= byte_delta + (int64_t)size;
843                         goto need_realloc;
844                     }
845                     ist->is_start=0;
846
847                     memset(input_tmp, 0, byte_delta);
848                     memcpy(input_tmp + byte_delta, buf, size);
849                     buf= input_tmp;
850                     size += byte_delta;
851                     av_log(NULL, AV_LOG_VERBOSE, "adding %d audio samples of silence\n", (int)delta);
852                 }
853             }else if(audio_sync_method>1){
854                 int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
855                 av_assert0(ost->audio_resample);
856                 av_log(NULL, AV_LOG_VERBOSE, "compensating audio timestamp drift:%f compensation:%d in:%d\n",
857                        delta, comp, enc->sample_rate);
858 //                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));
859                 av_resample_compensate(*(struct AVResampleContext**)ost->resample, comp, enc->sample_rate);
860             }
861         }
862     }else
863         ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
864                         - av_fifo_size(ost->fifo)/(enc->channels * 2); //FIXME wrong
865
866     if (ost->audio_resample) {
867         buftmp = audio_buf;
868         size_out = audio_resample(ost->resample,
869                                   (short *)buftmp, (short *)buf,
870                                   size / (dec->channels * isize));
871         size_out = size_out * enc->channels * osize;
872     } else {
873         buftmp = buf;
874         size_out = size;
875     }
876
877     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt) {
878         const void *ibuf[6]= {buftmp};
879         void *obuf[6]= {audio_buf};
880         int istride[6]= {isize};
881         int ostride[6]= {osize};
882         int len= size_out/istride[0];
883         if (av_audio_convert(ost->reformat_ctx, obuf, ostride, ibuf, istride, len)<0) {
884             printf("av_audio_convert() failed\n");
885             if (exit_on_error)
886                 exit_program(1);
887             return;
888         }
889         buftmp = audio_buf;
890         size_out = len*osize;
891     }
892
893     /* now encode as many frames as possible */
894     if (enc->frame_size > 1) {
895         /* output resampled raw samples */
896         if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
897             av_log(NULL, AV_LOG_FATAL, "av_fifo_realloc2() failed\n");
898             exit_program(1);
899         }
900         av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
901
902         frame_bytes = enc->frame_size * osize * enc->channels;
903
904         while (av_fifo_size(ost->fifo) >= frame_bytes) {
905             AVPacket pkt;
906             av_init_packet(&pkt);
907
908             av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
909
910             //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
911
912             ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
913                                        (short *)audio_buf);
914             if (ret < 0) {
915                 av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
916                 exit_program(1);
917             }
918             audio_size += ret;
919             pkt.stream_index= ost->index;
920             pkt.data= audio_out;
921             pkt.size= ret;
922             if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
923                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
924             pkt.flags |= AV_PKT_FLAG_KEY;
925             write_frame(s, &pkt, enc, ost->bitstream_filters);
926
927             ost->sync_opts += enc->frame_size;
928         }
929     } else {
930         AVPacket pkt;
931         av_init_packet(&pkt);
932
933         ost->sync_opts += size_out / (osize * enc->channels);
934
935         /* output a pcm frame */
936         /* determine the size of the coded buffer */
937         size_out /= osize;
938         if (coded_bps)
939             size_out = size_out*coded_bps/8;
940
941         if(size_out > audio_out_size){
942             av_log(NULL, AV_LOG_FATAL, "Internal error, buffer size too small\n");
943             exit_program(1);
944         }
945
946         //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
947         ret = avcodec_encode_audio(enc, audio_out, size_out,
948                                    (short *)buftmp);
949         if (ret < 0) {
950             av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
951             exit_program(1);
952         }
953         audio_size += ret;
954         pkt.stream_index= ost->index;
955         pkt.data= audio_out;
956         pkt.size= ret;
957         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
958             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
959         pkt.flags |= AV_PKT_FLAG_KEY;
960         write_frame(s, &pkt, enc, ost->bitstream_filters);
961     }
962 }
963
964 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
965 {
966     AVCodecContext *dec;
967     AVPicture *picture2;
968     AVPicture picture_tmp;
969     uint8_t *buf = 0;
970
971     dec = ist->st->codec;
972
973     /* deinterlace : must be done before any resize */
974     if (do_deinterlace) {
975         int size;
976
977         /* create temporary picture */
978         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
979         buf = av_malloc(size);
980         if (!buf)
981             return;
982
983         picture2 = &picture_tmp;
984         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
985
986         if(avpicture_deinterlace(picture2, picture,
987                                  dec->pix_fmt, dec->width, dec->height) < 0) {
988             /* if error, do not deinterlace */
989             av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
990             av_free(buf);
991             buf = NULL;
992             picture2 = picture;
993         }
994     } else {
995         picture2 = picture;
996     }
997
998     if (picture != picture2)
999         *picture = *picture2;
1000     *bufp = buf;
1001 }
1002
1003 static void do_subtitle_out(AVFormatContext *s,
1004                             OutputStream *ost,
1005                             InputStream *ist,
1006                             AVSubtitle *sub,
1007                             int64_t pts)
1008 {
1009     static uint8_t *subtitle_out = NULL;
1010     int subtitle_out_max_size = 1024 * 1024;
1011     int subtitle_out_size, nb, i;
1012     AVCodecContext *enc;
1013     AVPacket pkt;
1014
1015     if (pts == AV_NOPTS_VALUE) {
1016         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
1017         if (exit_on_error)
1018             exit_program(1);
1019         return;
1020     }
1021
1022     enc = ost->st->codec;
1023
1024     if (!subtitle_out) {
1025         subtitle_out = av_malloc(subtitle_out_max_size);
1026     }
1027
1028     /* Note: DVB subtitle need one packet to draw them and one other
1029        packet to clear them */
1030     /* XXX: signal it in the codec context ? */
1031     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1032         nb = 2;
1033     else
1034         nb = 1;
1035
1036     for(i = 0; i < nb; i++) {
1037         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1038         // start_display_time is required to be 0
1039         sub->pts              += av_rescale_q(sub->start_display_time, (AVRational){1, 1000}, AV_TIME_BASE_Q);
1040         sub->end_display_time -= sub->start_display_time;
1041         sub->start_display_time = 0;
1042         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1043                                                     subtitle_out_max_size, sub);
1044         if (subtitle_out_size < 0) {
1045             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
1046             exit_program(1);
1047         }
1048
1049         av_init_packet(&pkt);
1050         pkt.stream_index = ost->index;
1051         pkt.data = subtitle_out;
1052         pkt.size = subtitle_out_size;
1053         pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1054         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1055             /* XXX: the pts correction is handled here. Maybe handling
1056                it in the codec would be better */
1057             if (i == 0)
1058                 pkt.pts += 90 * sub->start_display_time;
1059             else
1060                 pkt.pts += 90 * sub->end_display_time;
1061         }
1062         write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1063     }
1064 }
1065
1066 static int bit_buffer_size= 1024*256;
1067 static uint8_t *bit_buffer= NULL;
1068
1069 static void do_video_resample(OutputStream *ost,
1070                               InputStream *ist,
1071                               AVFrame *in_picture,
1072                               AVFrame **out_picture)
1073 {
1074     int resample_changed = 0;
1075     AVCodecContext *dec = ist->st->codec;
1076     *out_picture = in_picture;
1077
1078     resample_changed = ost->resample_width   != dec->width  ||
1079                        ost->resample_height  != dec->height ||
1080                        ost->resample_pix_fmt != dec->pix_fmt;
1081
1082     if (resample_changed) {
1083         av_log(NULL, AV_LOG_INFO,
1084                "Input stream #%d.%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1085                ist->file_index, ist->st->index,
1086                ost->resample_width, ost->resample_height, av_get_pix_fmt_name(ost->resample_pix_fmt),
1087                dec->width         , dec->height         , av_get_pix_fmt_name(dec->pix_fmt));
1088         if(!ost->video_resample)
1089             ost->video_resample = 1;
1090     }
1091
1092 #if !CONFIG_AVFILTER
1093     if (ost->video_resample) {
1094         *out_picture = &ost->pict_tmp;
1095         if (resample_changed) {
1096             /* initialize a new scaler context */
1097             sws_freeContext(ost->img_resample_ctx);
1098             ost->img_resample_ctx = sws_getContext(
1099                 ist->st->codec->width,
1100                 ist->st->codec->height,
1101                 ist->st->codec->pix_fmt,
1102                 ost->st->codec->width,
1103                 ost->st->codec->height,
1104                 ost->st->codec->pix_fmt,
1105                 ost->sws_flags, NULL, NULL, NULL);
1106             if (ost->img_resample_ctx == NULL) {
1107                 av_log(NULL, AV_LOG_FATAL, "Cannot get resampling context\n");
1108                 exit_program(1);
1109             }
1110         }
1111         sws_scale(ost->img_resample_ctx, in_picture->data, in_picture->linesize,
1112               0, ost->resample_height, (*out_picture)->data, (*out_picture)->linesize);
1113     }
1114 #else
1115     if (resample_changed) {
1116         avfilter_graph_free(&ost->graph);
1117         if (configure_video_filters(ist, ost)) {
1118             av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1119             exit_program(1);
1120         }
1121     }
1122 #endif
1123     if (resample_changed) {
1124         ost->resample_width   = dec->width;
1125         ost->resample_height  = dec->height;
1126         ost->resample_pix_fmt = dec->pix_fmt;
1127     }
1128 }
1129
1130
1131 static void do_video_out(AVFormatContext *s,
1132                          OutputStream *ost,
1133                          InputStream *ist,
1134                          AVFrame *in_picture,
1135                          int *frame_size, float quality)
1136 {
1137     int nb_frames, i, ret, format_video_sync;
1138     AVFrame *final_picture;
1139     AVCodecContext *enc;
1140     double sync_ipts;
1141
1142     enc = ost->st->codec;
1143
1144     sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1145
1146     /* by default, we output a single frame */
1147     nb_frames = 1;
1148
1149     *frame_size = 0;
1150
1151     format_video_sync = video_sync_method;
1152     if (format_video_sync < 0)
1153         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? 2 : 1;
1154
1155     if (format_video_sync) {
1156         double vdelta = sync_ipts - ost->sync_opts;
1157         //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1158         if (vdelta < -1.1)
1159             nb_frames = 0;
1160         else if (format_video_sync == 2) {
1161             if(vdelta<=-0.6){
1162                 nb_frames=0;
1163             }else if(vdelta>0.6)
1164                 ost->sync_opts= lrintf(sync_ipts);
1165         }else if (vdelta > 1.1)
1166             nb_frames = lrintf(vdelta);
1167 //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);
1168         if (nb_frames == 0){
1169             ++nb_frames_drop;
1170             av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
1171         }else if (nb_frames > 1) {
1172             nb_frames_dup += nb_frames - 1;
1173             av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames-1);
1174         }
1175     }else
1176         ost->sync_opts= lrintf(sync_ipts);
1177
1178     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
1179     if (nb_frames <= 0)
1180         return;
1181
1182     do_video_resample(ost, ist, in_picture, &final_picture);
1183
1184     /* duplicates frame if needed */
1185     for(i=0;i<nb_frames;i++) {
1186         AVPacket pkt;
1187         av_init_packet(&pkt);
1188         pkt.stream_index= ost->index;
1189
1190         if (s->oformat->flags & AVFMT_RAWPICTURE) {
1191             /* raw pictures are written as AVPicture structure to
1192                avoid any copies. We support temporarily the older
1193                method. */
1194             enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
1195             enc->coded_frame->top_field_first  = in_picture->top_field_first;
1196             pkt.data= (uint8_t *)final_picture;
1197             pkt.size=  sizeof(AVPicture);
1198             pkt.pts= av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1199             pkt.flags |= AV_PKT_FLAG_KEY;
1200
1201             write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1202         } else {
1203             AVFrame big_picture;
1204
1205             big_picture= *final_picture;
1206             /* better than nothing: use input picture interlaced
1207                settings */
1208             big_picture.interlaced_frame = in_picture->interlaced_frame;
1209             if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1210                 if (ost->top_field_first == -1)
1211                     big_picture.top_field_first = in_picture->top_field_first;
1212                 else
1213                     big_picture.top_field_first = !!ost->top_field_first;
1214             }
1215
1216             /* handles same_quant here. This is not correct because it may
1217                not be a global option */
1218             big_picture.quality = quality;
1219             if (!enc->me_threshold)
1220                 big_picture.pict_type = 0;
1221 //            big_picture.pts = AV_NOPTS_VALUE;
1222             big_picture.pts= ost->sync_opts;
1223 //            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1224 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1225             if (ost->forced_kf_index < ost->forced_kf_count &&
1226                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1227                 big_picture.pict_type = AV_PICTURE_TYPE_I;
1228                 ost->forced_kf_index++;
1229             }
1230             ret = avcodec_encode_video(enc,
1231                                        bit_buffer, bit_buffer_size,
1232                                        &big_picture);
1233             if (ret < 0) {
1234                 av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1235                 exit_program(1);
1236             }
1237
1238             if(ret>0){
1239                 pkt.data= bit_buffer;
1240                 pkt.size= ret;
1241                 if(enc->coded_frame->pts != AV_NOPTS_VALUE)
1242                     pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1243 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1244    pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1245    pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1246
1247                 if(enc->coded_frame->key_frame)
1248                     pkt.flags |= AV_PKT_FLAG_KEY;
1249                 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1250                 *frame_size = ret;
1251                 video_size += ret;
1252                 //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1253                 //        enc->frame_number-1, ret, enc->pict_type);
1254                 /* if two pass, output log */
1255                 if (ost->logfile && enc->stats_out) {
1256                     fprintf(ost->logfile, "%s", enc->stats_out);
1257                 }
1258             }
1259         }
1260         ost->sync_opts++;
1261         ost->frame_number++;
1262     }
1263 }
1264
1265 static double psnr(double d){
1266     return -10.0*log(d)/log(10.0);
1267 }
1268
1269 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1270                            int frame_size)
1271 {
1272     AVCodecContext *enc;
1273     int frame_number;
1274     double ti1, bitrate, avg_bitrate;
1275
1276     /* this is executed just the first time do_video_stats is called */
1277     if (!vstats_file) {
1278         vstats_file = fopen(vstats_filename, "w");
1279         if (!vstats_file) {
1280             perror("fopen");
1281             exit_program(1);
1282         }
1283     }
1284
1285     enc = ost->st->codec;
1286     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1287         frame_number = ost->frame_number;
1288         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1289         if (enc->flags&CODEC_FLAG_PSNR)
1290             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
1291
1292         fprintf(vstats_file,"f_size= %6d ", frame_size);
1293         /* compute pts value */
1294         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1295         if (ti1 < 0.01)
1296             ti1 = 0.01;
1297
1298         bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1299         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1300         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1301             (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1302         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1303     }
1304 }
1305
1306 static void print_report(OutputFile *output_files,
1307                          OutputStream *ost_table, int nb_ostreams,
1308                          int is_last_report, int64_t timer_start)
1309 {
1310     char buf[1024];
1311     OutputStream *ost;
1312     AVFormatContext *oc;
1313     int64_t total_size;
1314     AVCodecContext *enc;
1315     int frame_number, vid, i;
1316     double bitrate, ti1, pts;
1317     static int64_t last_time = -1;
1318     static int qp_histogram[52];
1319
1320     if (!print_stats && !is_last_report)
1321         return;
1322
1323     if (!is_last_report) {
1324         int64_t cur_time;
1325         /* display the report every 0.5 seconds */
1326         cur_time = av_gettime();
1327         if (last_time == -1) {
1328             last_time = cur_time;
1329             return;
1330         }
1331         if ((cur_time - last_time) < 500000)
1332             return;
1333         last_time = cur_time;
1334     }
1335
1336
1337     oc = output_files[0].ctx;
1338
1339     total_size = avio_size(oc->pb);
1340     if(total_size<0) // FIXME improve avio_size() so it works with non seekable output too
1341         total_size= avio_tell(oc->pb);
1342
1343     buf[0] = '\0';
1344     ti1 = 1e10;
1345     vid = 0;
1346     for(i=0;i<nb_ostreams;i++) {
1347         float q = -1;
1348         ost = &ost_table[i];
1349         enc = ost->st->codec;
1350         if (!ost->st->stream_copy && enc->coded_frame)
1351             q = enc->coded_frame->quality/(float)FF_QP2LAMBDA;
1352         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1353             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1354         }
1355         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1356             float t = (av_gettime()-timer_start) / 1000000.0;
1357
1358             frame_number = ost->frame_number;
1359             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1360                      frame_number, (t>1)?(int)(frame_number/t+0.5) : 0, q);
1361             if(is_last_report)
1362                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1363             if(qp_hist){
1364                 int j;
1365                 int qp = lrintf(q);
1366                 if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
1367                     qp_histogram[qp]++;
1368                 for(j=0; j<32; j++)
1369                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
1370             }
1371             if (enc->flags&CODEC_FLAG_PSNR){
1372                 int j;
1373                 double error, error_sum=0;
1374                 double scale, scale_sum=0;
1375                 char type[3]= {'Y','U','V'};
1376                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1377                 for(j=0; j<3; j++){
1378                     if(is_last_report){
1379                         error= enc->error[j];
1380                         scale= enc->width*enc->height*255.0*255.0*frame_number;
1381                     }else{
1382                         error= enc->coded_frame->error[j];
1383                         scale= enc->width*enc->height*255.0*255.0;
1384                     }
1385                     if(j) scale/=4;
1386                     error_sum += error;
1387                     scale_sum += scale;
1388                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
1389                 }
1390                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
1391             }
1392             vid = 1;
1393         }
1394         /* compute min output value */
1395         pts = (double)ost->st->pts.val * av_q2d(ost->st->time_base);
1396         if ((pts < ti1) && (pts > 0))
1397             ti1 = pts;
1398     }
1399     if (ti1 < 0.01)
1400         ti1 = 0.01;
1401
1402     bitrate = (double)(total_size * 8) / ti1 / 1000.0;
1403
1404     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1405             "size=%8.0fkB time=%0.2f bitrate=%6.1fkbits/s",
1406             (double)total_size / 1024, ti1, bitrate);
1407
1408     if (nb_frames_dup || nb_frames_drop)
1409         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1410                 nb_frames_dup, nb_frames_drop);
1411
1412     av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
1413
1414     fflush(stderr);
1415
1416     if (is_last_report) {
1417         int64_t raw= audio_size + video_size + extra_size;
1418         av_log(NULL, AV_LOG_INFO, "\n");
1419         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1420                video_size/1024.0,
1421                audio_size/1024.0,
1422                extra_size/1024.0,
1423                100.0*(total_size - raw)/raw
1424         );
1425     }
1426 }
1427
1428 static void generate_silence(uint8_t* buf, enum AVSampleFormat sample_fmt, size_t size)
1429 {
1430     int fill_char = 0x00;
1431     if (sample_fmt == AV_SAMPLE_FMT_U8)
1432         fill_char = 0x80;
1433     memset(buf, fill_char, size);
1434 }
1435
1436 static void flush_encoders(OutputStream *ost_table, int nb_ostreams)
1437 {
1438     int i, ret;
1439
1440     for (i = 0; i < nb_ostreams; i++) {
1441         OutputStream   *ost = &ost_table[i];
1442         AVCodecContext *enc = ost->st->codec;
1443         AVFormatContext *os = output_files[ost->file_index].ctx;
1444
1445         if (!ost->encoding_needed)
1446             continue;
1447
1448         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
1449             continue;
1450         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE))
1451             continue;
1452
1453         for(;;) {
1454             AVPacket pkt;
1455             int fifo_bytes;
1456             av_init_packet(&pkt);
1457             pkt.stream_index= ost->index;
1458
1459             switch (ost->st->codec->codec_type) {
1460             case AVMEDIA_TYPE_AUDIO:
1461                 fifo_bytes = av_fifo_size(ost->fifo);
1462                 ret = 0;
1463                 /* encode any samples remaining in fifo */
1464                 if (fifo_bytes > 0) {
1465                     int osize = av_get_bytes_per_sample(enc->sample_fmt);
1466                     int fs_tmp = enc->frame_size;
1467
1468                     av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1469                     if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1470                         enc->frame_size = fifo_bytes / (osize * enc->channels);
1471                     } else { /* pad */
1472                         int frame_bytes = enc->frame_size*osize*enc->channels;
1473                         if (allocated_audio_buf_size < frame_bytes)
1474                             exit_program(1);
1475                         generate_silence(audio_buf+fifo_bytes, enc->sample_fmt, frame_bytes - fifo_bytes);
1476                     }
1477
1478                     ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1479                     pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1480                                               ost->st->time_base.num, enc->sample_rate);
1481                     enc->frame_size = fs_tmp;
1482                 }
1483                 if (ret <= 0) {
1484                     ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1485                 }
1486                 if (ret < 0) {
1487                     av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1488                     exit_program(1);
1489                 }
1490                 audio_size += ret;
1491                 pkt.flags |= AV_PKT_FLAG_KEY;
1492                 break;
1493             case AVMEDIA_TYPE_VIDEO:
1494                 ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1495                 if (ret < 0) {
1496                     av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1497                     exit_program(1);
1498                 }
1499                 video_size += ret;
1500                 if(enc->coded_frame && enc->coded_frame->key_frame)
1501                     pkt.flags |= AV_PKT_FLAG_KEY;
1502                 if (ost->logfile && enc->stats_out) {
1503                     fprintf(ost->logfile, "%s", enc->stats_out);
1504                 }
1505                 break;
1506             default:
1507                 ret=-1;
1508             }
1509
1510             if (ret <= 0)
1511                 break;
1512             pkt.data = bit_buffer;
1513             pkt.size = ret;
1514             if (enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1515                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1516             write_frame(os, &pkt, ost->st->codec, ost->bitstream_filters);
1517         }
1518     }
1519 }
1520
1521 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1522 static int output_packet(InputStream *ist, int ist_index,
1523                          OutputStream *ost_table, int nb_ostreams,
1524                          const AVPacket *pkt)
1525 {
1526     AVFormatContext *os;
1527     OutputStream *ost;
1528     int ret = 0, i;
1529     int got_output;
1530     void *buffer_to_free = NULL;
1531     static unsigned int samples_size= 0;
1532     AVSubtitle subtitle, *subtitle_to_free;
1533     int64_t pkt_pts = AV_NOPTS_VALUE;
1534 #if CONFIG_AVFILTER
1535     int frame_available;
1536 #endif
1537     float quality;
1538
1539     AVPacket avpkt;
1540     int bps = av_get_bytes_per_sample(ist->st->codec->sample_fmt);
1541
1542     if(ist->next_pts == AV_NOPTS_VALUE)
1543         ist->next_pts= ist->pts;
1544
1545     if (pkt == NULL) {
1546         /* EOF handling */
1547         av_init_packet(&avpkt);
1548         avpkt.data = NULL;
1549         avpkt.size = 0;
1550         goto handle_eof;
1551     } else {
1552         avpkt = *pkt;
1553     }
1554
1555     if(pkt->dts != AV_NOPTS_VALUE)
1556         ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1557     if(pkt->pts != AV_NOPTS_VALUE)
1558         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1559
1560     //while we have more to decode or while the decoder did output something on EOF
1561     while (avpkt.size > 0 || (!pkt && got_output)) {
1562         uint8_t *data_buf, *decoded_data_buf;
1563         int data_size, decoded_data_size;
1564         AVFrame *decoded_frame, *filtered_frame;
1565     handle_eof:
1566         ist->pts= ist->next_pts;
1567
1568         if(avpkt.size && avpkt.size != pkt->size)
1569             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
1570                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1571             ist->showed_multi_packet_warning=1;
1572
1573         /* decode the packet if needed */
1574         decoded_frame    = filtered_frame = NULL;
1575         decoded_data_buf = NULL; /* fail safe */
1576         decoded_data_size= 0;
1577         data_buf  = avpkt.data;
1578         data_size = avpkt.size;
1579         subtitle_to_free = NULL;
1580         if (ist->decoding_needed) {
1581             switch(ist->st->codec->codec_type) {
1582             case AVMEDIA_TYPE_AUDIO:{
1583                 if(pkt && samples_size < FFMAX(pkt->size * bps, AVCODEC_MAX_AUDIO_FRAME_SIZE)) {
1584                     samples_size = FFMAX(pkt->size * bps, AVCODEC_MAX_AUDIO_FRAME_SIZE);
1585                     av_free(samples);
1586                     samples= av_malloc(samples_size);
1587                 }
1588                 decoded_data_size= samples_size;
1589                     /* XXX: could avoid copy if PCM 16 bits with same
1590                        endianness as CPU */
1591                 ret = avcodec_decode_audio3(ist->st->codec, samples, &decoded_data_size,
1592                                             &avpkt);
1593                 if (ret < 0)
1594                     return ret;
1595                 avpkt.data += ret;
1596                 avpkt.size -= ret;
1597                 data_size   = ret;
1598                 got_output  = decoded_data_size > 0;
1599                 /* Some bug in mpeg audio decoder gives */
1600                 /* decoded_data_size < 0, it seems they are overflows */
1601                 if (!got_output) {
1602                     /* no audio frame */
1603                     continue;
1604                 }
1605                 decoded_data_buf = (uint8_t *)samples;
1606                 ist->next_pts += ((int64_t)AV_TIME_BASE/bps * decoded_data_size) /
1607                     (ist->st->codec->sample_rate * ist->st->codec->channels);
1608                 break;}
1609             case AVMEDIA_TYPE_VIDEO:
1610                     if (!(decoded_frame = avcodec_alloc_frame()))
1611                         return AVERROR(ENOMEM);
1612                     avpkt.pts = pkt_pts;
1613                     avpkt.dts = ist->pts;
1614                     pkt_pts = AV_NOPTS_VALUE;
1615
1616                     ret = avcodec_decode_video2(ist->st->codec,
1617                                                 decoded_frame, &got_output, &avpkt);
1618                     quality = same_quant ? decoded_frame->quality : 0;
1619                     if (ret < 0)
1620                         goto fail;
1621                     if (!got_output) {
1622                         /* no picture yet */
1623                         av_freep(&decoded_frame);
1624                         goto discard_packet;
1625                     }
1626                     ist->next_pts = ist->pts = guess_correct_pts(&ist->pts_ctx, decoded_frame->pkt_pts,
1627                                                                  decoded_frame->pkt_dts);
1628                     if (ist->st->codec->time_base.num != 0) {
1629                         int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1630                         ist->next_pts += ((int64_t)AV_TIME_BASE *
1631                                           ist->st->codec->time_base.num * ticks) /
1632                             ist->st->codec->time_base.den;
1633                     }
1634                     avpkt.size = 0;
1635                     buffer_to_free = NULL;
1636                     pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
1637                     break;
1638             case AVMEDIA_TYPE_SUBTITLE:
1639                 ret = avcodec_decode_subtitle2(ist->st->codec,
1640                                                &subtitle, &got_output, &avpkt);
1641                 if (ret < 0)
1642                     return ret;
1643                 if (!got_output) {
1644                     goto discard_packet;
1645                 }
1646                 subtitle_to_free = &subtitle;
1647                 avpkt.size = 0;
1648                 break;
1649             default:
1650                 return -1;
1651             }
1652         } else {
1653             switch(ist->st->codec->codec_type) {
1654             case AVMEDIA_TYPE_AUDIO:
1655                 ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1656                     ist->st->codec->sample_rate;
1657                 break;
1658             case AVMEDIA_TYPE_VIDEO:
1659                 if (ist->st->codec->time_base.num != 0) {
1660                     int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1661                     ist->next_pts += ((int64_t)AV_TIME_BASE *
1662                                       ist->st->codec->time_base.num * ticks) /
1663                         ist->st->codec->time_base.den;
1664                 }
1665                 break;
1666             }
1667             avpkt.size = 0;
1668         }
1669
1670         // preprocess audio (volume)
1671         if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1672             if (audio_volume != 256) {
1673                 switch (ist->st->codec->sample_fmt) {
1674                 case AV_SAMPLE_FMT_U8:
1675                 {
1676                     uint8_t *volp = samples;
1677                     for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1678                         int v = (((*volp - 128) * audio_volume + 128) >> 8) + 128;
1679                         *volp++ = av_clip_uint8(v);
1680                     }
1681                     break;
1682                 }
1683                 case AV_SAMPLE_FMT_S16:
1684                 {
1685                     int16_t *volp = samples;
1686                     for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1687                         int v = ((*volp) * audio_volume + 128) >> 8;
1688                         *volp++ = av_clip_int16(v);
1689                     }
1690                     break;
1691                 }
1692                 case AV_SAMPLE_FMT_S32:
1693                 {
1694                     int32_t *volp = samples;
1695                     for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1696                         int64_t v = (((int64_t)*volp * audio_volume + 128) >> 8);
1697                         *volp++ = av_clipl_int32(v);
1698                     }
1699                     break;
1700                 }
1701                 case AV_SAMPLE_FMT_FLT:
1702                 {
1703                     float *volp = samples;
1704                     float scale = audio_volume / 256.f;
1705                     for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1706                         *volp++ *= scale;
1707                     }
1708                     break;
1709                 }
1710                 case AV_SAMPLE_FMT_DBL:
1711                 {
1712                     double *volp = samples;
1713                     double scale = audio_volume / 256.;
1714                     for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1715                         *volp++ *= scale;
1716                     }
1717                     break;
1718                 }
1719                 default:
1720                     av_log(NULL, AV_LOG_FATAL,
1721                            "Audio volume adjustment on sample format %s is not supported.\n",
1722                            av_get_sample_fmt_name(ist->st->codec->sample_fmt));
1723                     exit_program(1);
1724                 }
1725             }
1726         }
1727
1728         /* frame rate emulation */
1729         if (input_files[ist->file_index].rate_emu) {
1730             int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1731             int64_t now = av_gettime() - ist->start;
1732             if (pts > now)
1733                 usleep(pts - now);
1734         }
1735         /* if output time reached then transcode raw format,
1736            encode packets and output them */
1737         for (i = 0; i < nb_ostreams; i++) {
1738             OutputFile *of = &output_files[ost_table[i].file_index];
1739             int frame_size;
1740
1741             ost = &ost_table[i];
1742             if (ost->source_index != ist_index)
1743                 continue;
1744
1745             if (of->start_time && ist->pts < of->start_time)
1746                 continue;
1747
1748             if (of->recording_time != INT64_MAX &&
1749                 av_compare_ts(ist->pts, AV_TIME_BASE_Q, of->recording_time + of->start_time,
1750                               (AVRational){1, 1000000}) >= 0) {
1751                 ost->is_past_recording_time = 1;
1752                 continue;
1753             }
1754
1755 #if CONFIG_AVFILTER
1756             if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
1757                 ost->input_video_filter) {
1758                 AVRational sar;
1759                 if (ist->st->sample_aspect_ratio.num)
1760                     sar = ist->st->sample_aspect_ratio;
1761                 else
1762                     sar = ist->st->codec->sample_aspect_ratio;
1763                 av_vsrc_buffer_add_frame(ost->input_video_filter, decoded_frame, ist->pts, sar);
1764                 if (!(filtered_frame = avcodec_alloc_frame())) {
1765                     ret = AVERROR(ENOMEM);
1766                     goto fail;
1767                 }
1768             }
1769             frame_available = ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO ||
1770                 !ost->output_video_filter || avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1771             while (frame_available) {
1772                 AVRational ist_pts_tb;
1773                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ost->output_video_filter)
1774                     get_filtered_video_frame(ost->output_video_filter, filtered_frame, &ost->picref, &ist_pts_tb);
1775                 if (ost->picref)
1776                     ist->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1777 #else
1778                 filtered_frame = decoded_frame;
1779 #endif
1780                 os = output_files[ost->file_index].ctx;
1781
1782                 /* set the input output pts pairs */
1783                 //ost->sync_ipts = (double)(ist->pts + input_files[ist->file_index].ts_offset - start_time)/ AV_TIME_BASE;
1784
1785                 if (ost->encoding_needed) {
1786                     av_assert0(ist->decoding_needed);
1787                     switch(ost->st->codec->codec_type) {
1788                     case AVMEDIA_TYPE_AUDIO:
1789                         do_audio_out(os, ost, ist, decoded_data_buf, decoded_data_size);
1790                         break;
1791                     case AVMEDIA_TYPE_VIDEO:
1792 #if CONFIG_AVFILTER
1793                         if (ost->picref->video && !ost->frame_aspect_ratio)
1794                             ost->st->codec->sample_aspect_ratio = ost->picref->video->pixel_aspect;
1795 #endif
1796                         do_video_out(os, ost, ist, filtered_frame, &frame_size,
1797                                      same_quant ? quality : ost->st->codec->global_quality);
1798                         if (vstats_filename && frame_size)
1799                             do_video_stats(os, ost, frame_size);
1800                         break;
1801                     case AVMEDIA_TYPE_SUBTITLE:
1802                         do_subtitle_out(os, ost, ist, &subtitle,
1803                                         pkt->pts);
1804                         break;
1805                     default:
1806                         abort();
1807                     }
1808                 } else {
1809                     AVPacket opkt;
1810                     int64_t ost_tb_start_time= av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1811
1812                     av_init_packet(&opkt);
1813
1814                     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) && !copy_initial_nonkeyframes)
1815 #if !CONFIG_AVFILTER
1816                         continue;
1817 #else
1818                         goto cont;
1819 #endif
1820
1821                     /* no reencoding needed : output the packet directly */
1822                     /* force the input stream PTS */
1823
1824                     if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1825                         audio_size += data_size;
1826                     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1827                         video_size += data_size;
1828                         ost->sync_opts++;
1829                     }
1830
1831                     opkt.stream_index= ost->index;
1832                     if(pkt->pts != AV_NOPTS_VALUE)
1833                         opkt.pts= av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1834                     else
1835                         opkt.pts= AV_NOPTS_VALUE;
1836
1837                     if (pkt->dts == AV_NOPTS_VALUE)
1838                         opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1839                     else
1840                         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1841                     opkt.dts -= ost_tb_start_time;
1842
1843                     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1844                     opkt.flags= pkt->flags;
1845
1846                     //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1847                     if(   ost->st->codec->codec_id != CODEC_ID_H264
1848                        && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1849                        && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1850                        ) {
1851                         if(av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, data_buf, data_size, pkt->flags & AV_PKT_FLAG_KEY))
1852                             opkt.destruct= av_destruct_packet;
1853                     } else {
1854                         opkt.data = data_buf;
1855                         opkt.size = data_size;
1856                     }
1857
1858                     write_frame(os, &opkt, ost->st->codec, ost->bitstream_filters);
1859                     ost->st->codec->frame_number++;
1860                     ost->frame_number++;
1861                     av_free_packet(&opkt);
1862                 }
1863 #if CONFIG_AVFILTER
1864                 cont:
1865                 frame_available = (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) &&
1866                                    ost->output_video_filter && avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1867                 if (ost->picref)
1868                     avfilter_unref_buffer(ost->picref);
1869             }
1870             av_freep(&filtered_frame);
1871 #endif
1872             }
1873
1874 fail:
1875         av_free(buffer_to_free);
1876         /* XXX: allocate the subtitles in the codec ? */
1877         if (subtitle_to_free) {
1878             avsubtitle_free(subtitle_to_free);
1879             subtitle_to_free = NULL;
1880         }
1881         av_freep(&decoded_frame);
1882         if (ret < 0)
1883             return ret;
1884     }
1885  discard_packet:
1886
1887     return 0;
1888 }
1889
1890 static void print_sdp(OutputFile *output_files, int n)
1891 {
1892     char sdp[2048];
1893     int i;
1894     AVFormatContext **avc = av_malloc(sizeof(*avc)*n);
1895
1896     if (!avc)
1897         exit_program(1);
1898     for (i = 0; i < n; i++)
1899         avc[i] = output_files[i].ctx;
1900
1901     av_sdp_create(avc, n, sdp, sizeof(sdp));
1902     printf("SDP:\n%s\n", sdp);
1903     fflush(stdout);
1904     av_freep(&avc);
1905 }
1906
1907 static int init_input_stream(int ist_index, OutputStream *output_streams, int nb_output_streams,
1908                              char *error, int error_len)
1909 {
1910     int i;
1911     InputStream *ist = &input_streams[ist_index];
1912     if (ist->decoding_needed) {
1913         AVCodec *codec = ist->dec;
1914         if (!codec) {
1915             snprintf(error, error_len, "Decoder (codec id %d) not found for input stream #%d.%d",
1916                     ist->st->codec->codec_id, ist->file_index, ist->st->index);
1917             return AVERROR(EINVAL);
1918         }
1919
1920         /* update requested sample format for the decoder based on the
1921            corresponding encoder sample format */
1922         for (i = 0; i < nb_output_streams; i++) {
1923             OutputStream *ost = &output_streams[i];
1924             if (ost->source_index == ist_index) {
1925                 update_sample_fmt(ist->st->codec, codec, ost->st->codec);
1926                 break;
1927             }
1928         }
1929
1930         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
1931             snprintf(error, error_len, "Error while opening decoder for input stream #%d.%d",
1932                     ist->file_index, ist->st->index);
1933             return AVERROR(EINVAL);
1934         }
1935         assert_codec_experimental(ist->st->codec, 0);
1936         assert_avoptions(ist->opts);
1937     }
1938
1939     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;
1940     ist->next_pts = AV_NOPTS_VALUE;
1941     init_pts_correction(&ist->pts_ctx);
1942     ist->is_start = 1;
1943
1944     return 0;
1945 }
1946
1947 static int transcode_init(OutputFile *output_files,
1948                           int nb_output_files,
1949                           InputFile *input_files,
1950                           int nb_input_files)
1951 {
1952     int ret = 0, i, j, k;
1953     AVFormatContext *os;
1954     AVCodecContext *codec, *icodec;
1955     OutputStream *ost;
1956     InputStream *ist;
1957     char error[1024];
1958     int want_sdp = 1;
1959
1960     /* init framerate emulation */
1961     for (i = 0; i < nb_input_files; i++) {
1962         InputFile *ifile = &input_files[i];
1963         if (ifile->rate_emu)
1964             for (j = 0; j < ifile->nb_streams; j++)
1965                 input_streams[j + ifile->ist_index].start = av_gettime();
1966     }
1967
1968     /* output stream init */
1969     for(i=0;i<nb_output_files;i++) {
1970         os = output_files[i].ctx;
1971         if (!os->nb_streams && !(os->oformat->flags & AVFMT_NOSTREAMS)) {
1972             av_dump_format(os, i, os->filename, 1);
1973             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
1974             return AVERROR(EINVAL);
1975         }
1976     }
1977
1978     /* for each output stream, we compute the right encoding parameters */
1979     for (i = 0; i < nb_output_streams; i++) {
1980         ost = &output_streams[i];
1981         os = output_files[ost->file_index].ctx;
1982         ist = &input_streams[ost->source_index];
1983
1984         codec = ost->st->codec;
1985         icodec = ist->st->codec;
1986
1987         ost->st->disposition = ist->st->disposition;
1988         codec->bits_per_raw_sample= icodec->bits_per_raw_sample;
1989         codec->chroma_sample_location = icodec->chroma_sample_location;
1990
1991         if (ost->st->stream_copy) {
1992             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
1993
1994             if (extra_size > INT_MAX) {
1995                 return AVERROR(EINVAL);
1996             }
1997
1998             /* if stream_copy is selected, no need to decode or encode */
1999             codec->codec_id = icodec->codec_id;
2000             codec->codec_type = icodec->codec_type;
2001
2002             if(!codec->codec_tag){
2003                 if(   !os->oformat->codec_tag
2004                    || av_codec_get_id (os->oformat->codec_tag, icodec->codec_tag) == codec->codec_id
2005                    || av_codec_get_tag(os->oformat->codec_tag, icodec->codec_id) <= 0)
2006                     codec->codec_tag = icodec->codec_tag;
2007             }
2008
2009             codec->bit_rate = icodec->bit_rate;
2010             codec->rc_max_rate    = icodec->rc_max_rate;
2011             codec->rc_buffer_size = icodec->rc_buffer_size;
2012             codec->extradata= av_mallocz(extra_size);
2013             if (!codec->extradata) {
2014                 return AVERROR(ENOMEM);
2015             }
2016             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2017             codec->extradata_size= icodec->extradata_size;
2018             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){
2019                 codec->time_base = icodec->time_base;
2020                 codec->time_base.num *= icodec->ticks_per_frame;
2021                 av_reduce(&codec->time_base.num, &codec->time_base.den,
2022                           codec->time_base.num, codec->time_base.den, INT_MAX);
2023             }else
2024                 codec->time_base = ist->st->time_base;
2025             switch(codec->codec_type) {
2026             case AVMEDIA_TYPE_AUDIO:
2027                 if(audio_volume != 256) {
2028                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2029                     exit_program(1);
2030                 }
2031                 codec->channel_layout = icodec->channel_layout;
2032                 codec->sample_rate = icodec->sample_rate;
2033                 codec->channels = icodec->channels;
2034                 codec->frame_size = icodec->frame_size;
2035                 codec->audio_service_type = icodec->audio_service_type;
2036                 codec->block_align= icodec->block_align;
2037                 if(codec->block_align == 1 && codec->codec_id == CODEC_ID_MP3)
2038                     codec->block_align= 0;
2039                 if(codec->codec_id == CODEC_ID_AC3)
2040                     codec->block_align= 0;
2041                 break;
2042             case AVMEDIA_TYPE_VIDEO:
2043                 codec->pix_fmt = icodec->pix_fmt;
2044                 codec->width = icodec->width;
2045                 codec->height = icodec->height;
2046                 codec->has_b_frames = icodec->has_b_frames;
2047                 if (!codec->sample_aspect_ratio.num) {
2048                     codec->sample_aspect_ratio =
2049                     ost->st->sample_aspect_ratio =
2050                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2051                         ist->st->codec->sample_aspect_ratio.num ?
2052                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2053                 }
2054                 break;
2055             case AVMEDIA_TYPE_SUBTITLE:
2056                 codec->width = icodec->width;
2057                 codec->height = icodec->height;
2058                 break;
2059             case AVMEDIA_TYPE_DATA:
2060             case AVMEDIA_TYPE_ATTACHMENT:
2061                 break;
2062             default:
2063                 abort();
2064             }
2065         } else {
2066             if (!ost->enc)
2067                 ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
2068             ist->decoding_needed = 1;
2069             ost->encoding_needed = 1;
2070             switch(codec->codec_type) {
2071             case AVMEDIA_TYPE_AUDIO:
2072                 ost->fifo= av_fifo_alloc(1024);
2073                 if (!ost->fifo) {
2074                     return AVERROR(ENOMEM);
2075                 }
2076                 ost->reformat_pair = MAKE_SFMT_PAIR(AV_SAMPLE_FMT_NONE,AV_SAMPLE_FMT_NONE);
2077                 if (!codec->sample_rate) {
2078                     codec->sample_rate = icodec->sample_rate;
2079                     if (icodec->lowres)
2080                         codec->sample_rate >>= icodec->lowres;
2081                 }
2082                 choose_sample_rate(ost->st, ost->enc);
2083                 codec->time_base = (AVRational){1, codec->sample_rate};
2084                 if (codec->sample_fmt == AV_SAMPLE_FMT_NONE)
2085                     codec->sample_fmt = icodec->sample_fmt;
2086                 choose_sample_fmt(ost->st, ost->enc);
2087                 if (!codec->channels)
2088                     codec->channels = icodec->channels;
2089                 codec->channel_layout = icodec->channel_layout;
2090                 if (av_get_channel_layout_nb_channels(codec->channel_layout) != codec->channels)
2091                     codec->channel_layout = 0;
2092                 ost->audio_resample = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
2093                 icodec->request_channels = codec->channels;
2094                 ost->resample_sample_fmt  = icodec->sample_fmt;
2095                 ost->resample_sample_rate = icodec->sample_rate;
2096                 ost->resample_channels    = icodec->channels;
2097                 break;
2098             case AVMEDIA_TYPE_VIDEO:
2099                 if (codec->pix_fmt == PIX_FMT_NONE)
2100                     codec->pix_fmt = icodec->pix_fmt;
2101                 choose_pixel_fmt(ost->st, ost->enc);
2102
2103                 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2104                     av_log(NULL, AV_LOG_FATAL, "Video pixel format is unknown, stream cannot be encoded\n");
2105                     exit_program(1);
2106                 }
2107
2108                 if (!codec->width || !codec->height) {
2109                     codec->width  = icodec->width;
2110                     codec->height = icodec->height;
2111                 }
2112
2113                 ost->video_resample = codec->width   != icodec->width  ||
2114                                       codec->height  != icodec->height ||
2115                                       codec->pix_fmt != icodec->pix_fmt;
2116                 if (ost->video_resample) {
2117 #if !CONFIG_AVFILTER
2118                     avcodec_get_frame_defaults(&ost->pict_tmp);
2119                     if(avpicture_alloc((AVPicture*)&ost->pict_tmp, codec->pix_fmt,
2120                                        codec->width, codec->height)) {
2121                         av_log(NULL, AV_LOG_FATAL, "Cannot allocate temp picture, check pix fmt\n");
2122                         exit_program(1);
2123                     }
2124                     ost->img_resample_ctx = sws_getContext(
2125                         icodec->width,
2126                         icodec->height,
2127                         icodec->pix_fmt,
2128                         codec->width,
2129                         codec->height,
2130                         codec->pix_fmt,
2131                         ost->sws_flags, NULL, NULL, NULL);
2132                     if (ost->img_resample_ctx == NULL) {
2133                         av_log(NULL, AV_LOG_FATAL, "Cannot get resampling context\n");
2134                         exit_program(1);
2135                     }
2136 #endif
2137                     codec->bits_per_raw_sample= 0;
2138                 }
2139
2140                 ost->resample_height = icodec->height;
2141                 ost->resample_width  = icodec->width;
2142                 ost->resample_pix_fmt= icodec->pix_fmt;
2143
2144                 if (!ost->frame_rate.num)
2145                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25,1};
2146                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2147                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2148                     ost->frame_rate = ost->enc->supported_framerates[idx];
2149                 }
2150                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
2151
2152 #if CONFIG_AVFILTER
2153                 if (configure_video_filters(ist, ost)) {
2154                     av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2155                     exit(1);
2156                 }
2157 #endif
2158                 break;
2159             case AVMEDIA_TYPE_SUBTITLE:
2160                 break;
2161             default:
2162                 abort();
2163                 break;
2164             }
2165             /* two pass mode */
2166             if ((codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2167                 char logfilename[1024];
2168                 FILE *f;
2169
2170                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2171                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2172                          i);
2173                 if (codec->flags & CODEC_FLAG_PASS1) {
2174                     f = fopen(logfilename, "wb");
2175                     if (!f) {
2176                         av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2177                                logfilename, strerror(errno));
2178                         exit_program(1);
2179                     }
2180                     ost->logfile = f;
2181                 } else {
2182                     char  *logbuffer;
2183                     size_t logbuffer_size;
2184                     if (read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2185                         av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2186                                logfilename);
2187                         exit_program(1);
2188                     }
2189                     codec->stats_in = logbuffer;
2190                 }
2191             }
2192         }
2193         if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2194             int size= codec->width * codec->height;
2195             bit_buffer_size= FFMAX(bit_buffer_size, 6*size + 200);
2196         }
2197     }
2198
2199     if (!bit_buffer)
2200         bit_buffer = av_malloc(bit_buffer_size);
2201     if (!bit_buffer) {
2202         av_log(NULL, AV_LOG_ERROR, "Cannot allocate %d bytes output buffer\n",
2203                bit_buffer_size);
2204         return AVERROR(ENOMEM);
2205     }
2206
2207     /* open each encoder */
2208     for (i = 0; i < nb_output_streams; i++) {
2209         ost = &output_streams[i];
2210         if (ost->encoding_needed) {
2211             AVCodec *codec = ost->enc;
2212             AVCodecContext *dec = input_streams[ost->source_index].st->codec;
2213             if (!codec) {
2214                 snprintf(error, sizeof(error), "Encoder (codec id %d) not found for output stream #%d.%d",
2215                          ost->st->codec->codec_id, ost->file_index, ost->index);
2216                 ret = AVERROR(EINVAL);
2217                 goto dump_format;
2218             }
2219             if (dec->subtitle_header) {
2220                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2221                 if (!ost->st->codec->subtitle_header) {
2222                     ret = AVERROR(ENOMEM);
2223                     goto dump_format;
2224                 }
2225                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2226                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2227             }
2228             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2229                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d.%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2230                         ost->file_index, ost->index);
2231                 ret = AVERROR(EINVAL);
2232                 goto dump_format;
2233             }
2234             assert_codec_experimental(ost->st->codec, 1);
2235             assert_avoptions(ost->opts);
2236             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2237                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2238                                              "It takes bits/s as argument, not kbits/s\n");
2239             extra_size += ost->st->codec->extradata_size;
2240
2241             if (ost->st->codec->me_threshold)
2242                 input_streams[ost->source_index].st->codec->debug |= FF_DEBUG_MV;
2243         }
2244     }
2245
2246     /* init input streams */
2247     for (i = 0; i < nb_input_streams; i++)
2248         if ((ret = init_input_stream(i, output_streams, nb_output_streams, error, sizeof(error))) < 0)
2249             goto dump_format;
2250
2251     /* discard unused programs */
2252     for (i = 0; i < nb_input_files; i++) {
2253         InputFile *ifile = &input_files[i];
2254         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2255             AVProgram *p = ifile->ctx->programs[j];
2256             int discard  = AVDISCARD_ALL;
2257
2258             for (k = 0; k < p->nb_stream_indexes; k++)
2259                 if (!input_streams[ifile->ist_index + p->stream_index[k]].discard) {
2260                     discard = AVDISCARD_DEFAULT;
2261                     break;
2262                 }
2263             p->discard = discard;
2264         }
2265     }
2266
2267     /* open files and write file headers */
2268     for (i = 0; i < nb_output_files; i++) {
2269         os = output_files[i].ctx;
2270         if (avformat_write_header(os, &output_files[i].opts) < 0) {
2271             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2272             ret = AVERROR(EINVAL);
2273             goto dump_format;
2274         }
2275         assert_avoptions(output_files[i].opts);
2276         if (strcmp(os->oformat->name, "rtp")) {
2277             want_sdp = 0;
2278         }
2279     }
2280
2281  dump_format:
2282     /* dump the file output parameters - cannot be done before in case
2283        of stream copy */
2284     for(i=0;i<nb_output_files;i++) {
2285         av_dump_format(output_files[i].ctx, i, output_files[i].ctx->filename, 1);
2286     }
2287
2288     /* dump the stream mapping */
2289     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2290     for (i = 0; i < nb_output_streams; i++) {
2291         ost = &output_streams[i];
2292         av_log(NULL, AV_LOG_INFO, "  Stream #%d.%d -> #%d.%d",
2293                input_streams[ost->source_index].file_index,
2294                input_streams[ost->source_index].st->index,
2295                ost->file_index,
2296                ost->index);
2297         if (ost->sync_ist != &input_streams[ost->source_index])
2298             av_log(NULL, AV_LOG_INFO, " [sync #%d.%d]",
2299                    ost->sync_ist->file_index,
2300                    ost->sync_ist->st->index);
2301         if (ost->st->stream_copy)
2302             av_log(NULL, AV_LOG_INFO, " (copy)");
2303         else
2304             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index].dec ?
2305                    input_streams[ost->source_index].dec->name : "?",
2306                    ost->enc ? ost->enc->name : "?");
2307         av_log(NULL, AV_LOG_INFO, "\n");
2308     }
2309
2310     if (ret) {
2311         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2312         return ret;
2313     }
2314
2315     if (want_sdp) {
2316         print_sdp(output_files, nb_output_files);
2317     }
2318
2319     return 0;
2320 }
2321
2322 /*
2323  * The following code is the main loop of the file converter
2324  */
2325 static int transcode(OutputFile *output_files,
2326                      int nb_output_files,
2327                      InputFile *input_files,
2328                      int nb_input_files)
2329 {
2330     int ret, i;
2331     AVFormatContext *is, *os;
2332     OutputStream *ost;
2333     InputStream *ist;
2334     uint8_t *no_packet;
2335     int no_packet_count=0;
2336     int64_t timer_start;
2337
2338     if (!(no_packet = av_mallocz(nb_input_files)))
2339         exit_program(1);
2340
2341     ret = transcode_init(output_files, nb_output_files, input_files, nb_input_files);
2342     if (ret < 0)
2343         goto fail;
2344
2345     av_log(NULL, AV_LOG_INFO, "Press ctrl-c to stop encoding\n");
2346     term_init();
2347
2348     timer_start = av_gettime();
2349
2350     for(; received_sigterm == 0;) {
2351         int file_index, ist_index;
2352         AVPacket pkt;
2353         int64_t ipts_min;
2354         double opts_min;
2355
2356         ipts_min = INT64_MAX;
2357         opts_min= 1e100;
2358
2359         /* select the stream that we must read now by looking at the
2360            smallest output pts */
2361         file_index = -1;
2362         for (i = 0; i < nb_output_streams; i++) {
2363             OutputFile *of;
2364             int64_t ipts;
2365             double  opts;
2366             ost = &output_streams[i];
2367             of = &output_files[ost->file_index];
2368             os = output_files[ost->file_index].ctx;
2369             ist = &input_streams[ost->source_index];
2370             if (ost->is_past_recording_time || no_packet[ist->file_index] ||
2371                 (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2372                 continue;
2373             opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2374             ipts = ist->pts;
2375             if (!input_files[ist->file_index].eof_reached){
2376                 if(ipts < ipts_min) {
2377                     ipts_min = ipts;
2378                     if(input_sync ) file_index = ist->file_index;
2379                 }
2380                 if(opts < opts_min) {
2381                     opts_min = opts;
2382                     if(!input_sync) file_index = ist->file_index;
2383                 }
2384             }
2385             if (ost->frame_number >= ost->max_frames) {
2386                 int j;
2387                 for (j = 0; j < of->ctx->nb_streams; j++)
2388                     output_streams[of->ost_index + j].is_past_recording_time = 1;
2389                 continue;
2390             }
2391         }
2392         /* if none, if is finished */
2393         if (file_index < 0) {
2394             if(no_packet_count){
2395                 no_packet_count=0;
2396                 memset(no_packet, 0, nb_input_files);
2397                 usleep(10000);
2398                 continue;
2399             }
2400             break;
2401         }
2402
2403         /* read a frame from it and output it in the fifo */
2404         is = input_files[file_index].ctx;
2405         ret= av_read_frame(is, &pkt);
2406         if(ret == AVERROR(EAGAIN)){
2407             no_packet[file_index]=1;
2408             no_packet_count++;
2409             continue;
2410         }
2411         if (ret < 0) {
2412             input_files[file_index].eof_reached = 1;
2413             if (opt_shortest)
2414                 break;
2415             else
2416                 continue;
2417         }
2418
2419         no_packet_count=0;
2420         memset(no_packet, 0, nb_input_files);
2421
2422         if (do_pkt_dump) {
2423             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2424                              is->streams[pkt.stream_index]);
2425         }
2426         /* the following test is needed in case new streams appear
2427            dynamically in stream : we ignore them */
2428         if (pkt.stream_index >= input_files[file_index].nb_streams)
2429             goto discard_packet;
2430         ist_index = input_files[file_index].ist_index + pkt.stream_index;
2431         ist = &input_streams[ist_index];
2432         if (ist->discard)
2433             goto discard_packet;
2434
2435         if (pkt.dts != AV_NOPTS_VALUE)
2436             pkt.dts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2437         if (pkt.pts != AV_NOPTS_VALUE)
2438             pkt.pts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2439
2440         if(pkt.pts != AV_NOPTS_VALUE)
2441             pkt.pts *= ist->ts_scale;
2442         if(pkt.dts != AV_NOPTS_VALUE)
2443             pkt.dts *= ist->ts_scale;
2444
2445 //        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);
2446         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2447             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2448             int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2449             int64_t delta= pkt_dts - ist->next_pts;
2450             if((FFABS(delta) > 1LL*dts_delta_threshold*AV_TIME_BASE || pkt_dts+1<ist->pts)&& !copy_ts){
2451                 input_files[ist->file_index].ts_offset -= delta;
2452                 av_log(NULL, AV_LOG_DEBUG, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2453                        delta, input_files[ist->file_index].ts_offset);
2454                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2455                 if(pkt.pts != AV_NOPTS_VALUE)
2456                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2457             }
2458         }
2459
2460         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
2461         if (output_packet(ist, ist_index, output_streams, nb_output_streams, &pkt) < 0) {
2462
2463             av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d.%d\n",
2464                    ist->file_index, ist->st->index);
2465             if (exit_on_error)
2466                 exit_program(1);
2467             av_free_packet(&pkt);
2468             continue;
2469         }
2470
2471     discard_packet:
2472         av_free_packet(&pkt);
2473
2474         /* dump report by using the output first video and audio streams */
2475         print_report(output_files, output_streams, nb_output_streams, 0, timer_start);
2476     }
2477
2478     /* at the end of stream, we must flush the decoder buffers */
2479     for (i = 0; i < nb_input_streams; i++) {
2480         ist = &input_streams[i];
2481         if (ist->decoding_needed) {
2482             output_packet(ist, i, output_streams, nb_output_streams, NULL);
2483         }
2484     }
2485     flush_encoders(output_streams, nb_output_streams);
2486
2487     term_exit();
2488
2489     /* write the trailer if needed and close file */
2490     for(i=0;i<nb_output_files;i++) {
2491         os = output_files[i].ctx;
2492         av_write_trailer(os);
2493     }
2494
2495     /* dump report by using the first video and audio streams */
2496     print_report(output_files, output_streams, nb_output_streams, 1, timer_start);
2497
2498     /* close each encoder */
2499     for (i = 0; i < nb_output_streams; i++) {
2500         ost = &output_streams[i];
2501         if (ost->encoding_needed) {
2502             av_freep(&ost->st->codec->stats_in);
2503             avcodec_close(ost->st->codec);
2504         }
2505 #if CONFIG_AVFILTER
2506         avfilter_graph_free(&ost->graph);
2507 #endif
2508     }
2509
2510     /* close each decoder */
2511     for (i = 0; i < nb_input_streams; i++) {
2512         ist = &input_streams[i];
2513         if (ist->decoding_needed) {
2514             avcodec_close(ist->st->codec);
2515         }
2516     }
2517
2518     /* finished ! */
2519     ret = 0;
2520
2521  fail:
2522     av_freep(&bit_buffer);
2523     av_freep(&no_packet);
2524
2525     if (output_streams) {
2526         for (i = 0; i < nb_output_streams; i++) {
2527             ost = &output_streams[i];
2528             if (ost) {
2529                 if (ost->st->stream_copy)
2530                     av_freep(&ost->st->codec->extradata);
2531                 if (ost->logfile) {
2532                     fclose(ost->logfile);
2533                     ost->logfile = NULL;
2534                 }
2535                 av_fifo_free(ost->fifo); /* works even if fifo is not
2536                                              initialized but set to zero */
2537                 av_freep(&ost->st->codec->subtitle_header);
2538                 av_free(ost->pict_tmp.data[0]);
2539                 av_free(ost->forced_kf_pts);
2540                 if (ost->video_resample)
2541                     sws_freeContext(ost->img_resample_ctx);
2542                 if (ost->resample)
2543                     audio_resample_close(ost->resample);
2544                 if (ost->reformat_ctx)
2545                     av_audio_convert_free(ost->reformat_ctx);
2546                 av_dict_free(&ost->opts);
2547             }
2548         }
2549     }
2550     return ret;
2551 }
2552
2553 static double parse_frame_aspect_ratio(const char *arg)
2554 {
2555     int x = 0, y = 0;
2556     double ar = 0;
2557     const char *p;
2558     char *end;
2559
2560     p = strchr(arg, ':');
2561     if (p) {
2562         x = strtol(arg, &end, 10);
2563         if (end == p)
2564             y = strtol(end+1, &end, 10);
2565         if (x > 0 && y > 0)
2566             ar = (double)x / (double)y;
2567     } else
2568         ar = strtod(arg, NULL);
2569
2570     if (!ar) {
2571         av_log(NULL, AV_LOG_FATAL, "Incorrect aspect ratio specification.\n");
2572         exit_program(1);
2573     }
2574     return ar;
2575 }
2576
2577 static int opt_audio_codec(OptionsContext *o, const char *opt, const char *arg)
2578 {
2579     return parse_option(o, "codec:a", arg, options);
2580 }
2581
2582 static int opt_video_codec(OptionsContext *o, const char *opt, const char *arg)
2583 {
2584     return parse_option(o, "codec:v", arg, options);
2585 }
2586
2587 static int opt_subtitle_codec(OptionsContext *o, const char *opt, const char *arg)
2588 {
2589     return parse_option(o, "codec:s", arg, options);
2590 }
2591
2592 static int opt_data_codec(OptionsContext *o, const char *opt, const char *arg)
2593 {
2594     return parse_option(o, "codec:d", arg, options);
2595 }
2596
2597 static int opt_map(OptionsContext *o, const char *opt, const char *arg)
2598 {
2599     StreamMap *m = NULL;
2600     int i, negative = 0, file_idx;
2601     int sync_file_idx = -1, sync_stream_idx;
2602     char *p, *sync;
2603     char *map;
2604
2605     if (*arg == '-') {
2606         negative = 1;
2607         arg++;
2608     }
2609     map = av_strdup(arg);
2610
2611     /* parse sync stream first, just pick first matching stream */
2612     if (sync = strchr(map, ',')) {
2613         *sync = 0;
2614         sync_file_idx = strtol(sync + 1, &sync, 0);
2615         if (sync_file_idx >= nb_input_files || sync_file_idx < 0) {
2616             av_log(NULL, AV_LOG_FATAL, "Invalid sync file index: %d.\n", sync_file_idx);
2617             exit_program(1);
2618         }
2619         if (*sync)
2620             sync++;
2621         for (i = 0; i < input_files[sync_file_idx].nb_streams; i++)
2622             if (check_stream_specifier(input_files[sync_file_idx].ctx,
2623                                        input_files[sync_file_idx].ctx->streams[i], sync) == 1) {
2624                 sync_stream_idx = i;
2625                 break;
2626             }
2627         if (i == input_files[sync_file_idx].nb_streams) {
2628             av_log(NULL, AV_LOG_FATAL, "Sync stream specification in map %s does not "
2629                                        "match any streams.\n", arg);
2630             exit_program(1);
2631         }
2632     }
2633
2634
2635     file_idx = strtol(map, &p, 0);
2636     if (file_idx >= nb_input_files || file_idx < 0) {
2637         av_log(NULL, AV_LOG_FATAL, "Invalid input file index: %d.\n", file_idx);
2638         exit_program(1);
2639     }
2640     if (negative)
2641         /* disable some already defined maps */
2642         for (i = 0; i < o->nb_stream_maps; i++) {
2643             m = &o->stream_maps[i];
2644             if (check_stream_specifier(input_files[m->file_index].ctx,
2645                                        input_files[m->file_index].ctx->streams[m->stream_index],
2646                                        *p == ':' ? p + 1 : p) > 0)
2647                 m->disabled = 1;
2648         }
2649     else
2650         for (i = 0; i < input_files[file_idx].nb_streams; i++) {
2651             if (check_stream_specifier(input_files[file_idx].ctx, input_files[file_idx].ctx->streams[i],
2652                         *p == ':' ? p + 1 : p) <= 0)
2653                 continue;
2654             o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
2655                                         &o->nb_stream_maps, o->nb_stream_maps + 1);
2656             m = &o->stream_maps[o->nb_stream_maps - 1];
2657
2658             m->file_index   = file_idx;
2659             m->stream_index = i;
2660
2661             if (sync_file_idx >= 0) {
2662                 m->sync_file_index   = sync_file_idx;
2663                 m->sync_stream_index = sync_stream_idx;
2664             } else {
2665                 m->sync_file_index   = file_idx;
2666                 m->sync_stream_index = i;
2667             }
2668         }
2669
2670     if (!m) {
2671         av_log(NULL, AV_LOG_FATAL, "Stream map '%s' matches no streams.\n", arg);
2672         exit_program(1);
2673     }
2674
2675     av_freep(&map);
2676     return 0;
2677 }
2678
2679 static void parse_meta_type(char *arg, char *type, int *index)
2680 {
2681     if (*arg) {
2682         *type = *arg;
2683         switch (*arg) {
2684         case 'g':
2685             break;
2686         case 's':
2687         case 'c':
2688         case 'p':
2689             if (*(++arg) == ':')
2690                 *index = strtol(++arg, NULL, 0);
2691             break;
2692         default:
2693             av_log(NULL, AV_LOG_FATAL, "Invalid metadata type %c.\n", *arg);
2694             exit_program(1);
2695         }
2696     } else
2697         *type = 'g';
2698 }
2699
2700 static int opt_map_metadata(OptionsContext *o, const char *opt, const char *arg)
2701 {
2702     MetadataMap *m, *m1;
2703     char *p;
2704
2705     o->meta_data_maps = grow_array(o->meta_data_maps, sizeof(*o->meta_data_maps),
2706                                    &o->nb_meta_data_maps, o->nb_meta_data_maps + 1);
2707
2708     m = &o->meta_data_maps[o->nb_meta_data_maps - 1][1];
2709     m->file = strtol(arg, &p, 0);
2710     parse_meta_type(*p ? p + 1 : p, &m->type, &m->index);
2711
2712     m1 = &o->meta_data_maps[o->nb_meta_data_maps - 1][0];
2713     if (p = strchr(opt, ':'))
2714         parse_meta_type(p + 1, &m1->type, &m1->index);
2715     else
2716         m1->type = 'g';
2717
2718     if (m->type == 'g' || m1->type == 'g')
2719         o->metadata_global_manual = 1;
2720     if (m->type == 's' || m1->type == 's')
2721         o->metadata_streams_manual = 1;
2722     if (m->type == 'c' || m1->type == 'c')
2723         o->metadata_chapters_manual = 1;
2724
2725     return 0;
2726 }
2727
2728 static enum CodecID find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
2729 {
2730     const char *codec_string = encoder ? "encoder" : "decoder";
2731     AVCodec *codec;
2732
2733     if(!name)
2734         return CODEC_ID_NONE;
2735     codec = encoder ?
2736         avcodec_find_encoder_by_name(name) :
2737         avcodec_find_decoder_by_name(name);
2738     if(!codec) {
2739         av_log(NULL, AV_LOG_FATAL, "Unknown %s '%s'\n", codec_string, name);
2740         exit_program(1);
2741     }
2742     if(codec->type != type) {
2743         av_log(NULL, AV_LOG_FATAL, "Invalid %s type '%s'\n", codec_string, name);
2744         exit_program(1);
2745     }
2746     return codec->id;
2747 }
2748
2749 static AVCodec *choose_codec(OptionsContext *o, AVFormatContext *s, AVStream *st, enum AVMediaType type)
2750 {
2751     char *codec_name = NULL;
2752
2753     MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, st);
2754
2755     if (!codec_name) {
2756         if (s->oformat) {
2757             st->codec->codec_id = av_guess_codec(s->oformat, NULL, s->filename, NULL, type);
2758             return avcodec_find_encoder(st->codec->codec_id);
2759         }
2760     } else if (!strcmp(codec_name, "copy"))
2761         st->stream_copy = 1;
2762     else {
2763         st->codec->codec_id = find_codec_or_die(codec_name, type, s->iformat == NULL);
2764         return s->oformat ? avcodec_find_encoder_by_name(codec_name) :
2765                             avcodec_find_decoder_by_name(codec_name);
2766     }
2767
2768     return NULL;
2769 }
2770
2771 /**
2772  * Add all the streams from the given input file to the global
2773  * list of input streams.
2774  */
2775 static void add_input_streams(OptionsContext *o, AVFormatContext *ic)
2776 {
2777     int i, rfps, rfps_base;
2778
2779     for (i = 0; i < ic->nb_streams; i++) {
2780         AVStream *st = ic->streams[i];
2781         AVCodecContext *dec = st->codec;
2782         InputStream *ist;
2783         double scale = 1.0;
2784
2785         input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
2786         ist = &input_streams[nb_input_streams - 1];
2787         ist->st = st;
2788         ist->file_index = nb_input_files;
2789         ist->discard = 1;
2790         ist->opts = filter_codec_opts(codec_opts, ist->st->codec->codec_id, ic, st);
2791
2792         MATCH_PER_STREAM_OPT(ts_scale, dbl, scale, ic, st);
2793         ist->ts_scale = scale;
2794
2795         ist->dec = choose_codec(o, ic, st, dec->codec_type);
2796         if (!ist->dec)
2797             ist->dec = avcodec_find_decoder(dec->codec_id);
2798
2799         switch (dec->codec_type) {
2800         case AVMEDIA_TYPE_AUDIO:
2801             if (o->audio_disable)
2802                 st->discard= AVDISCARD_ALL;
2803             break;
2804         case AVMEDIA_TYPE_VIDEO:
2805             rfps      = ic->streams[i]->r_frame_rate.num;
2806             rfps_base = ic->streams[i]->r_frame_rate.den;
2807             if (dec->lowres) {
2808                 dec->flags |= CODEC_FLAG_EMU_EDGE;
2809                 dec->height >>= dec->lowres;
2810                 dec->width  >>= dec->lowres;
2811             }
2812
2813             if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
2814
2815                 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",
2816                        i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
2817                        (float)rfps / rfps_base, rfps, rfps_base);
2818             }
2819
2820             if (o->video_disable)
2821                 st->discard= AVDISCARD_ALL;
2822             else if(video_discard)
2823                 st->discard= video_discard;
2824             break;
2825         case AVMEDIA_TYPE_DATA:
2826             break;
2827         case AVMEDIA_TYPE_SUBTITLE:
2828             if (o->subtitle_disable)
2829                 st->discard = AVDISCARD_ALL;
2830             break;
2831         case AVMEDIA_TYPE_ATTACHMENT:
2832         case AVMEDIA_TYPE_UNKNOWN:
2833             break;
2834         default:
2835             abort();
2836         }
2837     }
2838 }
2839
2840 static int opt_input_file(OptionsContext *o, const char *opt, const char *filename)
2841 {
2842     AVFormatContext *ic;
2843     AVInputFormat *file_iformat = NULL;
2844     int err, i, ret;
2845     int64_t timestamp;
2846     uint8_t buf[128];
2847     AVDictionary **opts;
2848     int orig_nb_streams;                     // number of streams before avformat_find_stream_info
2849
2850     if (o->format) {
2851         if (!(file_iformat = av_find_input_format(o->format))) {
2852             av_log(NULL, AV_LOG_FATAL, "Unknown input format: '%s'\n", o->format);
2853             exit_program(1);
2854         }
2855     }
2856
2857     if (!strcmp(filename, "-"))
2858         filename = "pipe:";
2859
2860     using_stdin |= !strncmp(filename, "pipe:", 5) ||
2861                     !strcmp(filename, "/dev/stdin");
2862
2863     /* get default parameters from command line */
2864     ic = avformat_alloc_context();
2865     if (!ic) {
2866         print_error(filename, AVERROR(ENOMEM));
2867         exit_program(1);
2868     }
2869     if (o->nb_audio_sample_rate) {
2870         snprintf(buf, sizeof(buf), "%d", o->audio_sample_rate[o->nb_audio_sample_rate - 1].u.i);
2871         av_dict_set(&format_opts, "sample_rate", buf, 0);
2872     }
2873     if (o->nb_audio_channels) {
2874         snprintf(buf, sizeof(buf), "%d", o->audio_channels[o->nb_audio_channels - 1].u.i);
2875         av_dict_set(&format_opts, "channels", buf, 0);
2876     }
2877     if (o->nb_frame_rates) {
2878         av_dict_set(&format_opts, "framerate", o->frame_rates[o->nb_frame_rates - 1].u.str, 0);
2879     }
2880     if (o->nb_frame_sizes) {
2881         av_dict_set(&format_opts, "video_size", o->frame_sizes[o->nb_frame_sizes - 1].u.str, 0);
2882     }
2883     if (o->nb_frame_pix_fmts)
2884         av_dict_set(&format_opts, "pixel_format", o->frame_pix_fmts[o->nb_frame_pix_fmts - 1].u.str, 0);
2885
2886     ic->flags |= AVFMT_FLAG_NONBLOCK;
2887
2888     /* open the input file with generic libav function */
2889     err = avformat_open_input(&ic, filename, file_iformat, &format_opts);
2890     if (err < 0) {
2891         print_error(filename, err);
2892         exit_program(1);
2893     }
2894     assert_avoptions(format_opts);
2895
2896     /* apply forced codec ids */
2897     for (i = 0; i < ic->nb_streams; i++)
2898         choose_codec(o, ic, ic->streams[i], ic->streams[i]->codec->codec_type);
2899
2900     /* Set AVCodecContext options for avformat_find_stream_info */
2901     opts = setup_find_stream_info_opts(ic, codec_opts);
2902     orig_nb_streams = ic->nb_streams;
2903
2904     /* If not enough info to get the stream parameters, we decode the
2905        first frames to get it. (used in mpeg case for example) */
2906     ret = avformat_find_stream_info(ic, opts);
2907     if (ret < 0) {
2908         av_log(NULL, AV_LOG_FATAL, "%s: could not find codec parameters\n", filename);
2909         av_close_input_file(ic);
2910         exit_program(1);
2911     }
2912
2913     timestamp = o->start_time;
2914     /* add the stream start time */
2915     if (ic->start_time != AV_NOPTS_VALUE)
2916         timestamp += ic->start_time;
2917
2918     /* if seeking requested, we execute it */
2919     if (o->start_time != 0) {
2920         ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
2921         if (ret < 0) {
2922             av_log(NULL, AV_LOG_WARNING, "%s: could not seek to position %0.3f\n",
2923                    filename, (double)timestamp / AV_TIME_BASE);
2924         }
2925     }
2926
2927     /* update the current parameters so that they match the one of the input stream */
2928     add_input_streams(o, ic);
2929
2930     /* dump the file content */
2931     av_dump_format(ic, nb_input_files, filename, 0);
2932
2933     input_files = grow_array(input_files, sizeof(*input_files), &nb_input_files, nb_input_files + 1);
2934     input_files[nb_input_files - 1].ctx        = ic;
2935     input_files[nb_input_files - 1].ist_index  = nb_input_streams - ic->nb_streams;
2936     input_files[nb_input_files - 1].ts_offset  = o->input_ts_offset - (copy_ts ? 0 : timestamp);
2937     input_files[nb_input_files - 1].nb_streams = ic->nb_streams;
2938     input_files[nb_input_files - 1].rate_emu   = o->rate_emu;
2939
2940     for (i = 0; i < orig_nb_streams; i++)
2941         av_dict_free(&opts[i]);
2942     av_freep(&opts);
2943
2944     reset_options(o);
2945     return 0;
2946 }
2947
2948 static void parse_forced_key_frames(char *kf, OutputStream *ost,
2949                                     AVCodecContext *avctx)
2950 {
2951     char *p;
2952     int n = 1, i;
2953     int64_t t;
2954
2955     for (p = kf; *p; p++)
2956         if (*p == ',')
2957             n++;
2958     ost->forced_kf_count = n;
2959     ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
2960     if (!ost->forced_kf_pts) {
2961         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
2962         exit_program(1);
2963     }
2964     for (i = 0; i < n; i++) {
2965         p = i ? strchr(p, ',') + 1 : kf;
2966         t = parse_time_or_die("force_key_frames", p, 1);
2967         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
2968     }
2969 }
2970
2971 static uint8_t *get_line(AVIOContext *s)
2972 {
2973     AVIOContext *line;
2974     uint8_t *buf;
2975     char c;
2976
2977     if (avio_open_dyn_buf(&line) < 0) {
2978         av_log(NULL, AV_LOG_FATAL, "Could not alloc buffer for reading preset.\n");
2979         exit_program(1);
2980     }
2981
2982     while ((c = avio_r8(s)) && c != '\n')
2983         avio_w8(line, c);
2984     avio_w8(line, 0);
2985     avio_close_dyn_buf(line, &buf);
2986
2987     return buf;
2988 }
2989
2990 static int get_preset_file_2(const char *preset_name, const char *codec_name, AVIOContext **s)
2991 {
2992     int i, ret = 1;
2993     char filename[1000];
2994     const char *base[3] = { getenv("AVCONV_DATADIR"),
2995                             getenv("HOME"),
2996                             AVCONV_DATADIR,
2997                             };
2998
2999     for (i = 0; i < FF_ARRAY_ELEMS(base) && ret; i++) {
3000         if (!base[i])
3001             continue;
3002         if (codec_name) {
3003             snprintf(filename, sizeof(filename), "%s%s/%s-%s.avpreset", base[i],
3004                      i != 1 ? "" : "/.avconv", codec_name, preset_name);
3005             ret = avio_open(s, filename, AVIO_FLAG_READ);
3006         }
3007         if (ret) {
3008             snprintf(filename, sizeof(filename), "%s%s/%s.avpreset", base[i],
3009                      i != 1 ? "" : "/.avconv", preset_name);
3010             ret = avio_open(s, filename, AVIO_FLAG_READ);
3011         }
3012     }
3013     return ret;
3014 }
3015
3016 static OutputStream *new_output_stream(OptionsContext *o, AVFormatContext *oc, enum AVMediaType type)
3017 {
3018     OutputStream *ost;
3019     AVStream *st = avformat_new_stream(oc, NULL);
3020     int idx      = oc->nb_streams - 1, ret = 0;
3021     int64_t max_frames = INT64_MAX;
3022     char *bsf = NULL, *next, *codec_tag = NULL;
3023     AVBitStreamFilterContext *bsfc, *bsfc_prev = NULL;
3024     double qscale = -1;
3025     char *buf = NULL, *arg = NULL, *preset = NULL;
3026     AVIOContext *s = NULL;
3027
3028     if (!st) {
3029         av_log(NULL, AV_LOG_FATAL, "Could not alloc stream.\n");
3030         exit_program(1);
3031     }
3032
3033     if (oc->nb_streams - 1 < o->nb_streamid_map)
3034         st->id = o->streamid_map[oc->nb_streams - 1];
3035
3036     output_streams = grow_array(output_streams, sizeof(*output_streams), &nb_output_streams,
3037                                 nb_output_streams + 1);
3038     ost = &output_streams[nb_output_streams - 1];
3039     ost->file_index = nb_output_files;
3040     ost->index = idx;
3041     ost->st    = st;
3042     st->codec->codec_type = type;
3043     ost->enc = choose_codec(o, oc, st, type);
3044     if (ost->enc) {
3045         ost->opts  = filter_codec_opts(codec_opts, ost->enc->id, oc, st);
3046     }
3047
3048     avcodec_get_context_defaults3(st->codec, ost->enc);
3049     st->codec->codec_type = type; // XXX hack, avcodec_get_context_defaults2() sets type to unknown for stream copy
3050
3051     MATCH_PER_STREAM_OPT(presets, str, preset, oc, st);
3052     if (preset && (!(ret = get_preset_file_2(preset, ost->enc->name, &s)))) {
3053         do  {
3054             buf = get_line(s);
3055             if (!buf[0] || buf[0] == '#') {
3056                 av_free(buf);
3057                 continue;
3058             }
3059             if (!(arg = strchr(buf, '='))) {
3060                 av_log(NULL, AV_LOG_FATAL, "Invalid line found in the preset file.\n");
3061                 exit_program(1);
3062             }
3063             *arg++ = 0;
3064             av_dict_set(&ost->opts, buf, arg, AV_DICT_DONT_OVERWRITE);
3065             av_free(buf);
3066         } while (!s->eof_reached);
3067         avio_close(s);
3068     }
3069     if (ret) {
3070         av_log(NULL, AV_LOG_FATAL,
3071                "Preset %s specified for stream %d:%d, but could not be opened.\n",
3072                preset, ost->file_index, ost->index);
3073         exit_program(1);
3074     }
3075
3076     MATCH_PER_STREAM_OPT(max_frames, i64, max_frames, oc, st);
3077     ost->max_frames = max_frames;
3078
3079     MATCH_PER_STREAM_OPT(bitstream_filters, str, bsf, oc, st);
3080     while (bsf) {
3081         if (next = strchr(bsf, ','))
3082             *next++ = 0;
3083         if (!(bsfc = av_bitstream_filter_init(bsf))) {
3084             av_log(NULL, AV_LOG_FATAL, "Unknown bitstream filter %s\n", bsf);
3085             exit_program(1);
3086         }
3087         if (bsfc_prev)
3088             bsfc_prev->next = bsfc;
3089         else
3090             ost->bitstream_filters = bsfc;
3091
3092         bsfc_prev = bsfc;
3093         bsf       = next;
3094     }
3095
3096     MATCH_PER_STREAM_OPT(codec_tags, str, codec_tag, oc, st);
3097     if (codec_tag) {
3098         uint32_t tag = strtol(codec_tag, &next, 0);
3099         if (*next)
3100             tag = AV_RL32(codec_tag);
3101         st->codec->codec_tag = tag;
3102     }
3103
3104     MATCH_PER_STREAM_OPT(qscale, dbl, qscale, oc, st);
3105     if (qscale >= 0 || same_quant) {
3106         st->codec->flags |= CODEC_FLAG_QSCALE;
3107         st->codec->global_quality = FF_QP2LAMBDA * qscale;
3108     }
3109
3110     if (oc->oformat->flags & AVFMT_GLOBALHEADER)
3111         st->codec->flags |= CODEC_FLAG_GLOBAL_HEADER;
3112
3113     av_opt_get_int(sws_opts, "sws_flags", 0, &ost->sws_flags);
3114     return ost;
3115 }
3116
3117 static void parse_matrix_coeffs(uint16_t *dest, const char *str)
3118 {
3119     int i;
3120     const char *p = str;
3121     for(i = 0;; i++) {
3122         dest[i] = atoi(p);
3123         if(i == 63)
3124             break;
3125         p = strchr(p, ',');
3126         if(!p) {
3127             av_log(NULL, AV_LOG_FATAL, "Syntax error in matrix \"%s\" at coeff %d\n", str, i);
3128             exit_program(1);
3129         }
3130         p++;
3131     }
3132 }
3133
3134 static OutputStream *new_video_stream(OptionsContext *o, AVFormatContext *oc)
3135 {
3136     AVStream *st;
3137     OutputStream *ost;
3138     AVCodecContext *video_enc;
3139
3140     ost = new_output_stream(o, oc, AVMEDIA_TYPE_VIDEO);
3141     st  = ost->st;
3142     video_enc = st->codec;
3143
3144     if (!st->stream_copy) {
3145         const char *p = NULL;
3146         char *forced_key_frames = NULL, *frame_rate = NULL, *frame_size = NULL;
3147         char *frame_aspect_ratio = NULL, *frame_pix_fmt = NULL;
3148         char *intra_matrix = NULL, *inter_matrix = NULL, *filters = NULL;
3149         int i, force_fps = 0, top_field_first = -1;
3150
3151         MATCH_PER_STREAM_OPT(frame_rates, str, frame_rate, oc, st);
3152         if (frame_rate && av_parse_video_rate(&ost->frame_rate, frame_rate) < 0) {
3153             av_log(NULL, AV_LOG_FATAL, "Invalid framerate value: %s\n", frame_rate);
3154             exit_program(1);
3155         }
3156
3157         MATCH_PER_STREAM_OPT(frame_sizes, str, frame_size, oc, st);
3158         if (frame_size && av_parse_video_size(&video_enc->width, &video_enc->height, frame_size) < 0) {
3159             av_log(NULL, AV_LOG_FATAL, "Invalid frame size: %s.\n", frame_size);
3160             exit_program(1);
3161         }
3162
3163         MATCH_PER_STREAM_OPT(frame_aspect_ratios, str, frame_aspect_ratio, oc, st);
3164         if (frame_aspect_ratio)
3165             ost->frame_aspect_ratio = parse_frame_aspect_ratio(frame_aspect_ratio);
3166
3167         MATCH_PER_STREAM_OPT(frame_pix_fmts, str, frame_pix_fmt, oc, st);
3168         if (frame_pix_fmt && (video_enc->pix_fmt = av_get_pix_fmt(frame_pix_fmt)) == PIX_FMT_NONE) {
3169             av_log(NULL, AV_LOG_FATAL, "Unknown pixel format requested: %s.\n", frame_pix_fmt);
3170             exit_program(1);
3171         }
3172         st->sample_aspect_ratio = video_enc->sample_aspect_ratio;
3173
3174         MATCH_PER_STREAM_OPT(intra_matrices, str, intra_matrix, oc, st);
3175         if (intra_matrix) {
3176             if (!(video_enc->intra_matrix = av_mallocz(sizeof(*video_enc->intra_matrix) * 64))) {
3177                 av_log(NULL, AV_LOG_FATAL, "Could not allocate memory for intra matrix.\n");
3178                 exit_program(1);
3179             }
3180             parse_matrix_coeffs(video_enc->intra_matrix, intra_matrix);
3181         }
3182         MATCH_PER_STREAM_OPT(inter_matrices, str, inter_matrix, oc, st);
3183         if (inter_matrix) {
3184             if (!(video_enc->inter_matrix = av_mallocz(sizeof(*video_enc->inter_matrix) * 64))) {
3185                 av_log(NULL, AV_LOG_FATAL, "Could not allocate memory for inter matrix.\n");
3186                 exit_program(1);
3187             }
3188             parse_matrix_coeffs(video_enc->inter_matrix, inter_matrix);
3189         }
3190
3191         MATCH_PER_STREAM_OPT(rc_overrides, str, p, oc, st);
3192         for(i=0; p; i++){
3193             int start, end, q;
3194             int e=sscanf(p, "%d,%d,%d", &start, &end, &q);
3195             if(e!=3){
3196                 av_log(NULL, AV_LOG_FATAL, "error parsing rc_override\n");
3197                 exit_program(1);
3198             }
3199             video_enc->rc_override=
3200                 av_realloc(video_enc->rc_override,
3201                            sizeof(RcOverride)*(i+1));
3202             video_enc->rc_override[i].start_frame= start;
3203             video_enc->rc_override[i].end_frame  = end;
3204             if(q>0){
3205                 video_enc->rc_override[i].qscale= q;
3206                 video_enc->rc_override[i].quality_factor= 1.0;
3207             }
3208             else{
3209                 video_enc->rc_override[i].qscale= 0;
3210                 video_enc->rc_override[i].quality_factor= -q/100.0;
3211             }
3212             p= strchr(p, '/');
3213             if(p) p++;
3214         }
3215         video_enc->rc_override_count=i;
3216         if (!video_enc->rc_initial_buffer_occupancy)
3217             video_enc->rc_initial_buffer_occupancy = video_enc->rc_buffer_size*3/4;
3218         video_enc->intra_dc_precision= intra_dc_precision - 8;
3219
3220         /* two pass mode */
3221         if (do_pass) {
3222             if (do_pass == 1) {
3223                 video_enc->flags |= CODEC_FLAG_PASS1;
3224             } else {
3225                 video_enc->flags |= CODEC_FLAG_PASS2;
3226             }
3227         }
3228
3229         MATCH_PER_STREAM_OPT(forced_key_frames, str, forced_key_frames, oc, st);
3230         if (forced_key_frames)
3231             parse_forced_key_frames(forced_key_frames, ost, video_enc);
3232
3233         MATCH_PER_STREAM_OPT(force_fps, i, force_fps, oc, st);
3234         ost->force_fps = force_fps;
3235
3236         MATCH_PER_STREAM_OPT(top_field_first, i, top_field_first, oc, st);
3237         ost->top_field_first = top_field_first;
3238
3239 #if CONFIG_AVFILTER
3240         MATCH_PER_STREAM_OPT(filters, str, filters, oc, st);
3241         if (filters)
3242             ost->avfilter = av_strdup(filters);
3243 #endif
3244     }
3245
3246     return ost;
3247 }
3248
3249 static OutputStream *new_audio_stream(OptionsContext *o, AVFormatContext *oc)
3250 {
3251     AVStream *st;
3252     OutputStream *ost;
3253     AVCodecContext *audio_enc;
3254
3255     ost = new_output_stream(o, oc, AVMEDIA_TYPE_AUDIO);
3256     st  = ost->st;
3257
3258     audio_enc = st->codec;
3259     audio_enc->codec_type = AVMEDIA_TYPE_AUDIO;
3260
3261     if (!st->stream_copy) {
3262         char *sample_fmt = NULL;
3263
3264         MATCH_PER_STREAM_OPT(audio_channels, i, audio_enc->channels, oc, st);
3265
3266         MATCH_PER_STREAM_OPT(sample_fmts, str, sample_fmt, oc, st);
3267         if (sample_fmt &&
3268             (audio_enc->sample_fmt = av_get_sample_fmt(sample_fmt)) == AV_SAMPLE_FMT_NONE) {
3269             av_log(NULL, AV_LOG_FATAL, "Invalid sample format '%s'\n", sample_fmt);
3270             exit_program(1);
3271         }
3272
3273         MATCH_PER_STREAM_OPT(audio_sample_rate, i, audio_enc->sample_rate, oc, st);
3274     }
3275
3276     return ost;
3277 }
3278
3279 static OutputStream *new_data_stream(OptionsContext *o, AVFormatContext *oc)
3280 {
3281     AVStream *st;
3282     OutputStream *ost;
3283
3284     ost = new_output_stream(o, oc, AVMEDIA_TYPE_DATA);
3285     st  = ost->st;
3286     if (!st->stream_copy) {
3287         av_log(NULL, AV_LOG_FATAL, "Data stream encoding not supported yet (only streamcopy)\n");
3288         exit_program(1);
3289     }
3290
3291     return ost;
3292 }
3293
3294 static OutputStream *new_attachment_stream(OptionsContext *o, AVFormatContext *oc)
3295 {
3296     OutputStream *ost = new_output_stream(o, oc, AVMEDIA_TYPE_ATTACHMENT);
3297     ost->st->stream_copy = 1;
3298     return ost;
3299 }
3300
3301 static OutputStream *new_subtitle_stream(OptionsContext *o, AVFormatContext *oc)
3302 {
3303     AVStream *st;
3304     OutputStream *ost;
3305     AVCodecContext *subtitle_enc;
3306
3307     ost = new_output_stream(o, oc, AVMEDIA_TYPE_SUBTITLE);
3308     st  = ost->st;
3309     subtitle_enc = st->codec;
3310
3311     subtitle_enc->codec_type = AVMEDIA_TYPE_SUBTITLE;
3312
3313     return ost;
3314 }
3315
3316 /* arg format is "output-stream-index:streamid-value". */
3317 static int opt_streamid(OptionsContext *o, const char *opt, const char *arg)
3318 {
3319     int idx;
3320     char *p;
3321     char idx_str[16];
3322
3323     av_strlcpy(idx_str, arg, sizeof(idx_str));
3324     p = strchr(idx_str, ':');
3325     if (!p) {
3326         av_log(NULL, AV_LOG_FATAL,
3327                "Invalid value '%s' for option '%s', required syntax is 'index:value'\n",
3328                arg, opt);
3329         exit_program(1);
3330     }
3331     *p++ = '\0';
3332     idx = parse_number_or_die(opt, idx_str, OPT_INT, 0, INT_MAX);
3333     o->streamid_map = grow_array(o->streamid_map, sizeof(*o->streamid_map), &o->nb_streamid_map, idx+1);
3334     o->streamid_map[idx] = parse_number_or_die(opt, p, OPT_INT, 0, INT_MAX);
3335     return 0;
3336 }
3337
3338 static int copy_chapters(InputFile *ifile, OutputFile *ofile, int copy_metadata)
3339 {
3340     AVFormatContext *is = ifile->ctx;
3341     AVFormatContext *os = ofile->ctx;
3342     int i;
3343
3344     for (i = 0; i < is->nb_chapters; i++) {
3345         AVChapter *in_ch = is->chapters[i], *out_ch;
3346         int64_t ts_off   = av_rescale_q(ofile->start_time - ifile->ts_offset,
3347                                       AV_TIME_BASE_Q, in_ch->time_base);
3348         int64_t rt       = (ofile->recording_time == INT64_MAX) ? INT64_MAX :
3349                            av_rescale_q(ofile->recording_time, AV_TIME_BASE_Q, in_ch->time_base);
3350
3351
3352         if (in_ch->end < ts_off)
3353             continue;
3354         if (rt != INT64_MAX && in_ch->start > rt + ts_off)
3355             break;
3356
3357         out_ch = av_mallocz(sizeof(AVChapter));
3358         if (!out_ch)
3359             return AVERROR(ENOMEM);
3360
3361         out_ch->id        = in_ch->id;
3362         out_ch->time_base = in_ch->time_base;
3363         out_ch->start     = FFMAX(0,  in_ch->start - ts_off);
3364         out_ch->end       = FFMIN(rt, in_ch->end   - ts_off);
3365
3366         if (copy_metadata)
3367             av_dict_copy(&out_ch->metadata, in_ch->metadata, 0);
3368
3369         os->nb_chapters++;
3370         os->chapters = av_realloc(os->chapters, sizeof(AVChapter)*os->nb_chapters);
3371         if (!os->chapters)
3372             return AVERROR(ENOMEM);
3373         os->chapters[os->nb_chapters - 1] = out_ch;
3374     }
3375     return 0;
3376 }
3377
3378 static int read_avserver_streams(OptionsContext *o, AVFormatContext *s, const char *filename)
3379 {
3380     int i, err;
3381     AVFormatContext *ic = NULL;
3382
3383     err = avformat_open_input(&ic, filename, NULL, NULL);
3384     if (err < 0)
3385         return err;
3386     /* copy stream format */
3387     for(i=0;i<ic->nb_streams;i++) {
3388         AVStream *st;
3389         OutputStream *ost;
3390         AVCodec *codec;
3391
3392         codec = avcodec_find_encoder(ic->streams[i]->codec->codec_id);
3393         ost   = new_output_stream(o, s, codec->type);
3394         st    = ost->st;
3395
3396         // FIXME: a more elegant solution is needed
3397         memcpy(st, ic->streams[i], sizeof(AVStream));
3398         st->info = NULL;
3399         avcodec_copy_context(st->codec, ic->streams[i]->codec);
3400
3401         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO && !st->stream_copy)
3402             choose_sample_fmt(st, codec);
3403         else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && !st->stream_copy)
3404             choose_pixel_fmt(st, codec);
3405     }
3406
3407     av_close_input_file(ic);
3408     return 0;
3409 }
3410
3411 static void opt_output_file(void *optctx, const char *filename)
3412 {
3413     OptionsContext *o = optctx;
3414     AVFormatContext *oc;
3415     int i, err;
3416     AVOutputFormat *file_oformat;
3417     OutputStream *ost;
3418     InputStream  *ist;
3419
3420     if (!strcmp(filename, "-"))
3421         filename = "pipe:";
3422
3423     oc = avformat_alloc_context();
3424     if (!oc) {
3425         print_error(filename, AVERROR(ENOMEM));
3426         exit_program(1);
3427     }
3428
3429     if (o->format) {
3430         file_oformat = av_guess_format(o->format, NULL, NULL);
3431         if (!file_oformat) {
3432             av_log(NULL, AV_LOG_FATAL, "Requested output format '%s' is not a suitable output format\n", o->format);
3433             exit_program(1);
3434         }
3435     } else {
3436         file_oformat = av_guess_format(NULL, filename, NULL);
3437         if (!file_oformat) {
3438             av_log(NULL, AV_LOG_FATAL, "Unable to find a suitable output format for '%s'\n",
3439                    filename);
3440             exit_program(1);
3441         }
3442     }
3443
3444     oc->oformat = file_oformat;
3445     av_strlcpy(oc->filename, filename, sizeof(oc->filename));
3446
3447     if (!strcmp(file_oformat->name, "ffm") &&
3448         av_strstart(filename, "http:", NULL)) {
3449         /* special case for files sent to avserver: we get the stream
3450            parameters from avserver */
3451         int err = read_avserver_streams(o, oc, filename);
3452         if (err < 0) {
3453             print_error(filename, err);
3454             exit_program(1);
3455         }
3456     } else if (!o->nb_stream_maps) {
3457         /* pick the "best" stream of each type */
3458 #define NEW_STREAM(type, index)\
3459         if (index >= 0) {\
3460             ost = new_ ## type ## _stream(o, oc);\
3461             ost->source_index = index;\
3462             ost->sync_ist     = &input_streams[index];\
3463             input_streams[index].discard = 0;\
3464         }
3465
3466         /* video: highest resolution */
3467         if (!o->video_disable && oc->oformat->video_codec != CODEC_ID_NONE) {
3468             int area = 0, idx = -1;
3469             for (i = 0; i < nb_input_streams; i++) {
3470                 ist = &input_streams[i];
3471                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
3472                     ist->st->codec->width * ist->st->codec->height > area) {
3473                     area = ist->st->codec->width * ist->st->codec->height;
3474                     idx = i;
3475                 }
3476             }
3477             NEW_STREAM(video, idx);
3478         }
3479
3480         /* audio: most channels */
3481         if (!o->audio_disable && oc->oformat->audio_codec != CODEC_ID_NONE) {
3482             int channels = 0, idx = -1;
3483             for (i = 0; i < nb_input_streams; i++) {
3484                 ist = &input_streams[i];
3485                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
3486                     ist->st->codec->channels > channels) {
3487                     channels = ist->st->codec->channels;
3488                     idx = i;
3489                 }
3490             }
3491             NEW_STREAM(audio, idx);
3492         }
3493
3494         /* subtitles: pick first */
3495         if (!o->subtitle_disable && oc->oformat->subtitle_codec != CODEC_ID_NONE) {
3496             for (i = 0; i < nb_input_streams; i++)
3497                 if (input_streams[i].st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3498                     NEW_STREAM(subtitle, i);
3499                     break;
3500                 }
3501         }
3502         /* do something with data? */
3503     } else {
3504         for (i = 0; i < o->nb_stream_maps; i++) {
3505             StreamMap *map = &o->stream_maps[i];
3506
3507             if (map->disabled)
3508                 continue;
3509
3510             ist = &input_streams[input_files[map->file_index].ist_index + map->stream_index];
3511             switch (ist->st->codec->codec_type) {
3512             case AVMEDIA_TYPE_VIDEO:    ost = new_video_stream(o, oc);    break;
3513             case AVMEDIA_TYPE_AUDIO:    ost = new_audio_stream(o, oc);    break;
3514             case AVMEDIA_TYPE_SUBTITLE: ost = new_subtitle_stream(o, oc); break;
3515             case AVMEDIA_TYPE_DATA:     ost = new_data_stream(o, oc);     break;
3516             case AVMEDIA_TYPE_ATTACHMENT: ost = new_attachment_stream(o, oc); break;
3517             default:
3518                 av_log(NULL, AV_LOG_FATAL, "Cannot map stream #%d.%d - unsupported type.\n",
3519                        map->file_index, map->stream_index);
3520                 exit_program(1);
3521             }
3522
3523             ost->source_index = input_files[map->file_index].ist_index + map->stream_index;
3524             ost->sync_ist = &input_streams[input_files[map->sync_file_index].ist_index +
3525                                            map->sync_stream_index];
3526             ist->discard = 0;
3527         }
3528     }
3529
3530     output_files = grow_array(output_files, sizeof(*output_files), &nb_output_files, nb_output_files + 1);
3531     output_files[nb_output_files - 1].ctx       = oc;
3532     output_files[nb_output_files - 1].ost_index = nb_output_streams - oc->nb_streams;
3533     output_files[nb_output_files - 1].recording_time = o->recording_time;
3534     output_files[nb_output_files - 1].start_time     = o->start_time;
3535     output_files[nb_output_files - 1].limit_filesize = o->limit_filesize;
3536     av_dict_copy(&output_files[nb_output_files - 1].opts, format_opts, 0);
3537
3538     /* check filename in case of an image number is expected */
3539     if (oc->oformat->flags & AVFMT_NEEDNUMBER) {
3540         if (!av_filename_number_test(oc->filename)) {
3541             print_error(oc->filename, AVERROR(EINVAL));
3542             exit_program(1);
3543         }
3544     }
3545
3546     if (!(oc->oformat->flags & AVFMT_NOFILE)) {
3547         /* test if it already exists to avoid loosing precious files */
3548         if (!file_overwrite &&
3549             (strchr(filename, ':') == NULL ||
3550              filename[1] == ':' ||
3551              av_strstart(filename, "file:", NULL))) {
3552             if (avio_check(filename, 0) == 0) {
3553                 if (!using_stdin) {
3554                     fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
3555                     fflush(stderr);
3556                     if (!read_yesno()) {
3557                         fprintf(stderr, "Not overwriting - exiting\n");
3558                         exit_program(1);
3559                     }
3560                 }
3561                 else {
3562                     fprintf(stderr,"File '%s' already exists. Exiting.\n", filename);
3563                     exit_program(1);
3564                 }
3565             }
3566         }
3567
3568         /* open the file */
3569         if ((err = avio_open(&oc->pb, filename, AVIO_FLAG_WRITE)) < 0) {
3570             print_error(filename, err);
3571             exit_program(1);
3572         }
3573     }
3574
3575     oc->preload   = (int)(o->mux_preload   * AV_TIME_BASE);
3576     oc->max_delay = (int)(o->mux_max_delay * AV_TIME_BASE);
3577     oc->flags |= AVFMT_FLAG_NONBLOCK;
3578
3579     /* copy chapters */
3580     if (o->chapters_input_file >= nb_input_files) {
3581         if (o->chapters_input_file == INT_MAX) {
3582             /* copy chapters from the first input file that has them*/
3583             o->chapters_input_file = -1;
3584             for (i = 0; i < nb_input_files; i++)
3585                 if (input_files[i].ctx->nb_chapters) {
3586                     o->chapters_input_file = i;
3587                     break;
3588                 }
3589         } else {
3590             av_log(NULL, AV_LOG_FATAL, "Invalid input file index %d in chapter mapping.\n",
3591                    o->chapters_input_file);
3592             exit_program(1);
3593         }
3594     }
3595     if (o->chapters_input_file >= 0)
3596         copy_chapters(&input_files[o->chapters_input_file], &output_files[nb_output_files - 1],
3597                       !o->metadata_chapters_manual);
3598
3599     /* copy metadata */
3600     for (i = 0; i < o->nb_meta_data_maps; i++) {
3601         AVFormatContext *files[2];
3602         AVDictionary    **meta[2];
3603         int j;
3604
3605 #define METADATA_CHECK_INDEX(index, nb_elems, desc)\
3606         if ((index) < 0 || (index) >= (nb_elems)) {\
3607             av_log(NULL, AV_LOG_FATAL, "Invalid %s index %d while processing metadata maps\n",\
3608                      (desc), (index));\
3609             exit_program(1);\
3610         }
3611
3612         int in_file_index = o->meta_data_maps[i][1].file;
3613         if (in_file_index < 0)
3614             continue;
3615         METADATA_CHECK_INDEX(in_file_index, nb_input_files, "input file")
3616
3617         files[0] = oc;
3618         files[1] = input_files[in_file_index].ctx;
3619
3620         for (j = 0; j < 2; j++) {
3621             MetadataMap *map = &o->meta_data_maps[i][j];
3622
3623             switch (map->type) {
3624             case 'g':
3625                 meta[j] = &files[j]->metadata;
3626                 break;
3627             case 's':
3628                 METADATA_CHECK_INDEX(map->index, files[j]->nb_streams, "stream")
3629                 meta[j] = &files[j]->streams[map->index]->metadata;
3630                 break;
3631             case 'c':
3632            &nb