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