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