avconv: rename sameq to same_quant
[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 #define MAX_FILES 100
101
102 static const char *last_asked_format = NULL;
103 static double *ts_scale;
104 static int  nb_ts_scale;
105
106 static AVFormatContext *output_files[MAX_FILES];
107 static AVDictionary *output_opts[MAX_FILES];
108 static int nb_output_files = 0;
109
110 static StreamMap *stream_maps = NULL;
111 static int nb_stream_maps;
112
113 static AVDictionary *codec_names;
114
115 /* first item specifies output metadata, second is input */
116 static MetadataMap (*meta_data_maps)[2] = NULL;
117 static int nb_meta_data_maps;
118 static int metadata_global_autocopy   = 1;
119 static int metadata_streams_autocopy  = 1;
120 static int metadata_chapters_autocopy = 1;
121
122 static int chapters_input_file = INT_MAX;
123
124 /* indexed by output file stream index */
125 static int *streamid_map = NULL;
126 static int nb_streamid_map = 0;
127
128 static int frame_width  = 0;
129 static int frame_height = 0;
130 static float frame_aspect_ratio = 0;
131 static enum PixelFormat frame_pix_fmt = PIX_FMT_NONE;
132 static enum AVSampleFormat audio_sample_fmt = AV_SAMPLE_FMT_NONE;
133 static int max_frames[4] = {INT_MAX, INT_MAX, INT_MAX, INT_MAX};
134 static AVRational frame_rate;
135 static float video_qscale = 0;
136 static uint16_t *intra_matrix = NULL;
137 static uint16_t *inter_matrix = NULL;
138 static const char *video_rc_override_string=NULL;
139 static int video_disable = 0;
140 static int video_discard = 0;
141 static unsigned int video_codec_tag = 0;
142 static char *video_language = NULL;
143 static int same_quant = 0;
144 static int do_deinterlace = 0;
145 static int top_field_first = -1;
146 static int me_threshold = 0;
147 static int intra_dc_precision = 8;
148 static int qp_hist = 0;
149 #if CONFIG_AVFILTER
150 static char *vfilters = NULL;
151 #endif
152
153 static int intra_only = 0;
154 static int audio_sample_rate = 0;
155 #define QSCALE_NONE -99999
156 static float audio_qscale = QSCALE_NONE;
157 static int audio_disable = 0;
158 static int audio_channels = 0;
159 static unsigned int audio_codec_tag = 0;
160 static char *audio_language = NULL;
161
162 static int subtitle_disable = 0;
163 static char *subtitle_language = NULL;
164 static unsigned int subtitle_codec_tag = 0;
165
166 static int data_disable = 0;
167 static unsigned int data_codec_tag = 0;
168
169 static float mux_preload= 0.5;
170 static float mux_max_delay= 0.7;
171
172 static int64_t recording_time = INT64_MAX;
173 static int64_t start_time = 0;
174 static int64_t input_ts_offset = 0;
175 static int file_overwrite = 0;
176 static AVDictionary *metadata;
177 static int do_benchmark = 0;
178 static int do_hex_dump = 0;
179 static int do_pkt_dump = 0;
180 static int do_psnr = 0;
181 static int do_pass = 0;
182 static char *pass_logfilename_prefix = NULL;
183 static int video_sync_method= -1;
184 static int audio_sync_method= 0;
185 static float audio_drift_threshold= 0.1;
186 static int copy_ts= 0;
187 static int copy_tb;
188 static int opt_shortest = 0;
189 static char *vstats_filename;
190 static FILE *vstats_file;
191 static int opt_programid = 0;
192 static int copy_initial_nonkeyframes = 0;
193
194 static int rate_emu = 0;
195
196 static int audio_volume = 256;
197
198 static int exit_on_error = 0;
199 static int using_stdin = 0;
200 static int verbose = 1;
201 static int thread_count= 1;
202 static int64_t video_size = 0;
203 static int64_t audio_size = 0;
204 static int64_t extra_size = 0;
205 static int nb_frames_dup = 0;
206 static int nb_frames_drop = 0;
207 static int input_sync;
208 static uint64_t limit_filesize = 0;
209 static int force_fps = 0;
210 static char *forced_key_frames = NULL;
211
212 static float dts_delta_threshold = 10;
213
214 static int64_t timer_start;
215
216 static uint8_t *audio_buf;
217 static uint8_t *audio_out;
218 static unsigned int allocated_audio_out_size, allocated_audio_buf_size;
219
220 static short *samples;
221
222 static AVBitStreamFilterContext *video_bitstream_filters=NULL;
223 static AVBitStreamFilterContext *audio_bitstream_filters=NULL;
224 static AVBitStreamFilterContext *subtitle_bitstream_filters=NULL;
225
226 #define DEFAULT_PASS_LOGFILENAME_PREFIX "av2pass"
227
228 struct InputStream;
229
230 typedef struct OutputStream {
231     int file_index;          /* file index */
232     int index;               /* stream index in the output file */
233     int source_index;        /* InputStream index */
234     AVStream *st;            /* stream in the output file */
235     int encoding_needed;     /* true if encoding needed for this stream */
236     int frame_number;
237     /* input pts and corresponding output pts
238        for A/V sync */
239     //double sync_ipts;        /* dts from the AVPacket of the demuxer in second units */
240     struct InputStream *sync_ist; /* input stream to sync against */
241     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ //FIXME look at frame_number
242     AVBitStreamFilterContext *bitstream_filters;
243     AVCodec *enc;
244
245     /* video only */
246     int video_resample;
247     AVFrame pict_tmp;      /* temporary image for resampling */
248     struct SwsContext *img_resample_ctx; /* for image resampling */
249     int resample_height;
250     int resample_width;
251     int resample_pix_fmt;
252     AVRational frame_rate;
253
254     float frame_aspect_ratio;
255
256     /* forced key frames */
257     int64_t *forced_kf_pts;
258     int forced_kf_count;
259     int forced_kf_index;
260
261     /* audio only */
262     int audio_resample;
263     ReSampleContext *resample; /* for audio resampling */
264     int resample_sample_fmt;
265     int resample_channels;
266     int resample_sample_rate;
267     int reformat_pair;
268     AVAudioConvert *reformat_ctx;
269     AVFifoBuffer *fifo;     /* for compression: one audio fifo per codec */
270     FILE *logfile;
271
272 #if CONFIG_AVFILTER
273     AVFilterContext *output_video_filter;
274     AVFilterContext *input_video_filter;
275     AVFilterBufferRef *picref;
276     char *avfilter;
277     AVFilterGraph *graph;
278 #endif
279
280    int sws_flags;
281    AVDictionary *opts;
282 } OutputStream;
283
284 static OutputStream **output_streams_for_file[MAX_FILES] = { NULL };
285 static int nb_output_streams_for_file[MAX_FILES] = { 0 };
286
287 typedef struct InputStream {
288     int file_index;
289     AVStream *st;
290     int discard;             /* true if stream data should be discarded */
291     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
292     AVCodec *dec;
293
294     int64_t       start;     /* time when read started */
295     int64_t       next_pts;  /* synthetic pts for cases where pkt.pts
296                                 is not defined */
297     int64_t       pts;       /* current pts */
298     PtsCorrectionContext pts_ctx;
299     double ts_scale;
300     int is_start;            /* is 1 at the start and after a discontinuity */
301     int showed_multi_packet_warning;
302     int is_past_recording_time;
303     AVDictionary *opts;
304 } InputStream;
305
306 typedef struct InputFile {
307     AVFormatContext *ctx;
308     int eof_reached;      /* true if eof reached */
309     int ist_index;        /* index of first stream in ist_table */
310     int buffer_size;      /* current total buffer size */
311     int64_t ts_offset;
312 } InputFile;
313
314 static InputStream *input_streams = NULL;
315 static int         nb_input_streams = 0;
316 static InputFile   *input_files   = NULL;
317 static int         nb_input_files   = 0;
318
319 #if CONFIG_AVFILTER
320
321 static int configure_video_filters(InputStream *ist, OutputStream *ost)
322 {
323     AVFilterContext *last_filter, *filter;
324     /** filter graph containing all filters including input & output */
325     AVCodecContext *codec = ost->st->codec;
326     AVCodecContext *icodec = ist->st->codec;
327     FFSinkContext ffsink_ctx = { .pix_fmt = codec->pix_fmt };
328     AVRational sample_aspect_ratio;
329     char args[255];
330     int ret;
331
332     ost->graph = avfilter_graph_alloc();
333
334     if (ist->st->sample_aspect_ratio.num){
335         sample_aspect_ratio = ist->st->sample_aspect_ratio;
336     }else
337         sample_aspect_ratio = ist->st->codec->sample_aspect_ratio;
338
339     snprintf(args, 255, "%d:%d:%d:%d:%d:%d:%d", ist->st->codec->width,
340              ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE,
341              sample_aspect_ratio.num, sample_aspect_ratio.den);
342
343     ret = avfilter_graph_create_filter(&ost->input_video_filter, avfilter_get_by_name("buffer"),
344                                        "src", args, NULL, ost->graph);
345     if (ret < 0)
346         return ret;
347     ret = avfilter_graph_create_filter(&ost->output_video_filter, &ffsink,
348                                        "out", NULL, &ffsink_ctx, ost->graph);
349     if (ret < 0)
350         return ret;
351     last_filter = ost->input_video_filter;
352
353     if (codec->width  != icodec->width || codec->height != icodec->height) {
354         snprintf(args, 255, "%d:%d:flags=0x%X",
355                  codec->width,
356                  codec->height,
357                  ost->sws_flags);
358         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
359                                                 NULL, args, NULL, ost->graph)) < 0)
360             return ret;
361         if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
362             return ret;
363         last_filter = filter;
364     }
365
366     snprintf(args, sizeof(args), "flags=0x%X", ost->sws_flags);
367     ost->graph->scale_sws_opts = av_strdup(args);
368
369     if (ost->avfilter) {
370         AVFilterInOut *outputs = av_malloc(sizeof(AVFilterInOut));
371         AVFilterInOut *inputs  = av_malloc(sizeof(AVFilterInOut));
372
373         outputs->name    = av_strdup("in");
374         outputs->filter_ctx = last_filter;
375         outputs->pad_idx = 0;
376         outputs->next    = NULL;
377
378         inputs->name    = av_strdup("out");
379         inputs->filter_ctx = ost->output_video_filter;
380         inputs->pad_idx = 0;
381         inputs->next    = NULL;
382
383         if ((ret = avfilter_graph_parse(ost->graph, ost->avfilter, inputs, outputs, NULL)) < 0)
384             return ret;
385         av_freep(&ost->avfilter);
386     } else {
387         if ((ret = avfilter_link(last_filter, 0, ost->output_video_filter, 0)) < 0)
388             return ret;
389     }
390
391     if ((ret = avfilter_graph_config(ost->graph, NULL)) < 0)
392         return ret;
393
394     codec->width  = ost->output_video_filter->inputs[0]->w;
395     codec->height = ost->output_video_filter->inputs[0]->h;
396     codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
397         ost->frame_aspect_ratio ? // overriden by the -aspect cli option
398         av_d2q(ost->frame_aspect_ratio*codec->height/codec->width, 255) :
399         ost->output_video_filter->inputs[0]->sample_aspect_ratio;
400
401     return 0;
402 }
403 #endif /* CONFIG_AVFILTER */
404
405 static void term_exit(void)
406 {
407     av_log(NULL, AV_LOG_QUIET, "");
408 }
409
410 static volatile int received_sigterm = 0;
411 static volatile int received_nb_signals = 0;
412
413 static void
414 sigterm_handler(int sig)
415 {
416     received_sigterm = sig;
417     received_nb_signals++;
418     term_exit();
419 }
420
421 static void term_init(void)
422 {
423     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).  */
424     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
425 #ifdef SIGXCPU
426     signal(SIGXCPU, sigterm_handler);
427 #endif
428 }
429
430 static int decode_interrupt_cb(void)
431 {
432     return received_nb_signals > 1;
433 }
434
435 static int exit_program(int ret)
436 {
437     int i;
438
439     /* close files */
440     for(i=0;i<nb_output_files;i++) {
441         AVFormatContext *s = output_files[i];
442         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
443             avio_close(s->pb);
444         avformat_free_context(s);
445         av_free(output_streams_for_file[i]);
446         av_dict_free(&output_opts[i]);
447     }
448     for(i=0;i<nb_input_files;i++) {
449         av_close_input_file(input_files[i].ctx);
450     }
451     for (i = 0; i < nb_input_streams; i++)
452         av_dict_free(&input_streams[i].opts);
453
454     av_free(intra_matrix);
455     av_free(inter_matrix);
456
457     if (vstats_file)
458         fclose(vstats_file);
459     av_free(vstats_filename);
460
461     av_free(streamid_map);
462     av_free(meta_data_maps);
463
464     av_freep(&input_streams);
465     av_freep(&input_files);
466
467     uninit_opts();
468     av_free(audio_buf);
469     av_free(audio_out);
470     allocated_audio_buf_size= allocated_audio_out_size= 0;
471     av_free(samples);
472
473 #if CONFIG_AVFILTER
474     avfilter_uninit();
475 #endif
476
477     if (received_sigterm) {
478         fprintf(stderr,
479             "Received signal %d: terminating.\n",
480             (int) received_sigterm);
481         exit (255);
482     }
483
484     exit(ret); /* not all OS-es handle main() return value */
485     return ret;
486 }
487
488 static void assert_avoptions(AVDictionary *m)
489 {
490     AVDictionaryEntry *t;
491     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
492         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
493         exit_program(1);
494     }
495 }
496
497 static void assert_codec_experimental(AVCodecContext *c, int encoder)
498 {
499     const char *codec_string = encoder ? "encoder" : "decoder";
500     AVCodec *codec;
501     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
502         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
503         av_log(NULL, AV_LOG_ERROR, "%s '%s' is experimental and might produce bad "
504                 "results.\nAdd '-strict experimental' if you want to use it.\n",
505                 codec_string, c->codec->name);
506         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
507         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
508             av_log(NULL, AV_LOG_ERROR, "Or use the non experimental %s '%s'.\n",
509                    codec_string, codec->name);
510         exit_program(1);
511     }
512 }
513
514 /* similar to ff_dynarray_add() and av_fast_realloc() */
515 static void *grow_array(void *array, int elem_size, int *size, int new_size)
516 {
517     if (new_size >= INT_MAX / elem_size) {
518         fprintf(stderr, "Array too big.\n");
519         exit_program(1);
520     }
521     if (*size < new_size) {
522         uint8_t *tmp = av_realloc(array, new_size*elem_size);
523         if (!tmp) {
524             fprintf(stderr, "Could not alloc buffer.\n");
525             exit_program(1);
526         }
527         memset(tmp + *size*elem_size, 0, (new_size-*size) * elem_size);
528         *size = new_size;
529         return tmp;
530     }
531     return array;
532 }
533
534 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
535 {
536     if(codec && codec->sample_fmts){
537         const enum AVSampleFormat *p= codec->sample_fmts;
538         for(; *p!=-1; p++){
539             if(*p == st->codec->sample_fmt)
540                 break;
541         }
542         if (*p == -1) {
543             av_log(NULL, AV_LOG_WARNING,
544                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
545                    av_get_sample_fmt_name(st->codec->sample_fmt),
546                    codec->name,
547                    av_get_sample_fmt_name(codec->sample_fmts[0]));
548             st->codec->sample_fmt = codec->sample_fmts[0];
549         }
550     }
551 }
552
553 /**
554  * Update the requested input sample format based on the output sample format.
555  * This is currently only used to request float output from decoders which
556  * support multiple sample formats, one of which is AV_SAMPLE_FMT_FLT.
557  * Ideally this will be removed in the future when decoders do not do format
558  * conversion and only output in their native format.
559  */
560 static void update_sample_fmt(AVCodecContext *dec, AVCodec *dec_codec,
561                               AVCodecContext *enc)
562 {
563     /* if sample formats match or a decoder sample format has already been
564        requested, just return */
565     if (enc->sample_fmt == dec->sample_fmt ||
566         dec->request_sample_fmt > AV_SAMPLE_FMT_NONE)
567         return;
568
569     /* if decoder supports more than one output format */
570     if (dec_codec && dec_codec->sample_fmts &&
571         dec_codec->sample_fmts[0] != AV_SAMPLE_FMT_NONE &&
572         dec_codec->sample_fmts[1] != AV_SAMPLE_FMT_NONE) {
573         const enum AVSampleFormat *p;
574         int min_dec = -1, min_inc = -1;
575
576         /* find a matching sample format in the encoder */
577         for (p = dec_codec->sample_fmts; *p != AV_SAMPLE_FMT_NONE; p++) {
578             if (*p == enc->sample_fmt) {
579                 dec->request_sample_fmt = *p;
580                 return;
581             } else if (*p > enc->sample_fmt) {
582                 min_inc = FFMIN(min_inc, *p - enc->sample_fmt);
583             } else
584                 min_dec = FFMIN(min_dec, enc->sample_fmt - *p);
585         }
586
587         /* if none match, provide the one that matches quality closest */
588         dec->request_sample_fmt = min_inc > 0 ? enc->sample_fmt + min_inc :
589                                   enc->sample_fmt - min_dec;
590     }
591 }
592
593 static void choose_sample_rate(AVStream *st, AVCodec *codec)
594 {
595     if(codec && codec->supported_samplerates){
596         const int *p= codec->supported_samplerates;
597         int best=0;
598         int best_dist=INT_MAX;
599         for(; *p; p++){
600             int dist= abs(st->codec->sample_rate - *p);
601             if(dist < best_dist){
602                 best_dist= dist;
603                 best= *p;
604             }
605         }
606         if(best_dist){
607             av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
608         }
609         st->codec->sample_rate= best;
610     }
611 }
612
613 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
614 {
615     if(codec && codec->pix_fmts){
616         const enum PixelFormat *p= codec->pix_fmts;
617         if(st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL){
618             if(st->codec->codec_id==CODEC_ID_MJPEG){
619                 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE};
620             }else if(st->codec->codec_id==CODEC_ID_LJPEG){
621                 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};
622             }
623         }
624         for(; *p!=-1; p++){
625             if(*p == st->codec->pix_fmt)
626                 break;
627         }
628         if (*p == -1) {
629             if(st->codec->pix_fmt != PIX_FMT_NONE)
630                 av_log(NULL, AV_LOG_WARNING,
631                         "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
632                         av_pix_fmt_descriptors[st->codec->pix_fmt].name,
633                         codec->name,
634                         av_pix_fmt_descriptors[codec->pix_fmts[0]].name);
635             st->codec->pix_fmt = codec->pix_fmts[0];
636         }
637     }
638 }
639
640 static enum CodecID find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
641 {
642     const char *codec_string = encoder ? "encoder" : "decoder";
643     AVCodec *codec;
644
645     if(!name)
646         return CODEC_ID_NONE;
647     codec = encoder ?
648         avcodec_find_encoder_by_name(name) :
649         avcodec_find_decoder_by_name(name);
650     if(!codec) {
651         av_log(NULL, AV_LOG_ERROR, "Unknown %s '%s'\n", codec_string, name);
652         exit_program(1);
653     }
654     if(codec->type != type) {
655         av_log(NULL, AV_LOG_ERROR, "Invalid %s type '%s'\n", codec_string, name);
656         exit_program(1);
657     }
658     return codec->id;
659 }
660
661 static AVCodec *choose_codec(AVFormatContext *s, AVStream *st, enum AVMediaType type, AVDictionary *codec_names)
662 {
663     AVDictionaryEntry *e = NULL;
664     char *codec_name = NULL;
665     int ret;
666
667     while (e = av_dict_get(codec_names, "", e, AV_DICT_IGNORE_SUFFIX)) {
668         char *p = strchr(e->key, ':');
669
670         if ((ret = check_stream_specifier(s, st, p ? p + 1 : "")) > 0)
671             codec_name = e->value;
672         else if (ret < 0)
673             exit_program(1);
674     }
675
676     if (!codec_name) {
677         if (s->oformat) {
678             st->codec->codec_id = av_guess_codec(s->oformat, NULL, s->filename, NULL, type);
679             return avcodec_find_encoder(st->codec->codec_id);
680         }
681     } else if (!strcmp(codec_name, "copy"))
682         st->stream_copy = 1;
683     else {
684         st->codec->codec_id = find_codec_or_die(codec_name, type, s->iformat == NULL);
685         return s->oformat ? avcodec_find_encoder_by_name(codec_name) :
686                             avcodec_find_decoder_by_name(codec_name);
687     }
688
689     return NULL;
690 }
691
692 static OutputStream *new_output_stream(AVFormatContext *oc, int file_idx, enum AVMediaType type)
693 {
694     OutputStream *ost;
695     AVStream *st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
696     int idx      = oc->nb_streams - 1;
697
698     if (!st) {
699         av_log(NULL, AV_LOG_ERROR, "Could not alloc stream.\n");
700         exit_program(1);
701     }
702
703     output_streams_for_file[file_idx] =
704         grow_array(output_streams_for_file[file_idx],
705                    sizeof(*output_streams_for_file[file_idx]),
706                    &nb_output_streams_for_file[file_idx],
707                    oc->nb_streams);
708     ost = output_streams_for_file[file_idx][idx] =
709         av_mallocz(sizeof(OutputStream));
710     if (!ost) {
711         fprintf(stderr, "Could not alloc output stream\n");
712         exit_program(1);
713     }
714     ost->file_index = file_idx;
715     ost->index = idx;
716     ost->st    = st;
717     st->codec->codec_type = type;
718     ost->enc = choose_codec(oc, st, type, codec_names);
719     if (ost->enc) {
720         ost->opts  = filter_codec_opts(codec_opts, ost->enc->id, oc, st);
721     }
722
723     avcodec_get_context_defaults3(st->codec, ost->enc);
724     st->codec->codec_type = type; // XXX hack, avcodec_get_context_defaults2() sets type to unknown for stream copy
725
726     ost->sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
727     return ost;
728 }
729
730 static int read_avserver_streams(AVFormatContext *s, const char *filename)
731 {
732     int i, err;
733     AVFormatContext *ic = NULL;
734     int nopts = 0;
735
736     err = avformat_open_input(&ic, filename, NULL, NULL);
737     if (err < 0)
738         return err;
739     /* copy stream format */
740     for(i=0;i<ic->nb_streams;i++) {
741         AVStream *st;
742         OutputStream *ost;
743         AVCodec *codec;
744
745         codec = avcodec_find_encoder(ic->streams[i]->codec->codec_id);
746         ost   = new_output_stream(s, nb_output_files, codec->type);
747         st    = ost->st;
748
749         // FIXME: a more elegant solution is needed
750         memcpy(st, ic->streams[i], sizeof(AVStream));
751         st->info = NULL;
752         avcodec_copy_context(st->codec, ic->streams[i]->codec);
753
754         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO && !st->stream_copy)
755             choose_sample_fmt(st, codec);
756         else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && !st->stream_copy)
757             choose_pixel_fmt(st, codec);
758
759         if(st->codec->flags & CODEC_FLAG_BITEXACT)
760             nopts = 1;
761     }
762
763     av_close_input_file(ic);
764     return 0;
765 }
766
767 static double
768 get_sync_ipts(const OutputStream *ost)
769 {
770     const InputStream *ist = ost->sync_ist;
771     return (double)(ist->pts - start_time)/AV_TIME_BASE;
772 }
773
774 static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc){
775     int ret;
776
777     while(bsfc){
778         AVPacket new_pkt= *pkt;
779         int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
780                                           &new_pkt.data, &new_pkt.size,
781                                           pkt->data, pkt->size,
782                                           pkt->flags & AV_PKT_FLAG_KEY);
783         if(a>0){
784             av_free_packet(pkt);
785             new_pkt.destruct= av_destruct_packet;
786         } else if(a<0){
787             fprintf(stderr, "%s failed for stream %d, codec %s",
788                     bsfc->filter->name, pkt->stream_index,
789                     avctx->codec ? avctx->codec->name : "copy");
790             print_error("", a);
791             if (exit_on_error)
792                 exit_program(1);
793         }
794         *pkt= new_pkt;
795
796         bsfc= bsfc->next;
797     }
798
799     ret= av_interleaved_write_frame(s, pkt);
800     if(ret < 0){
801         print_error("av_interleaved_write_frame()", ret);
802         exit_program(1);
803     }
804 }
805
806 #define MAX_AUDIO_PACKET_SIZE (128 * 1024)
807
808 static void do_audio_out(AVFormatContext *s,
809                          OutputStream *ost,
810                          InputStream *ist,
811                          unsigned char *buf, int size)
812 {
813     uint8_t *buftmp;
814     int64_t audio_out_size, audio_buf_size;
815     int64_t allocated_for_size= size;
816
817     int size_out, frame_bytes, ret, resample_changed;
818     AVCodecContext *enc= ost->st->codec;
819     AVCodecContext *dec= ist->st->codec;
820     int osize = av_get_bytes_per_sample(enc->sample_fmt);
821     int isize = av_get_bytes_per_sample(dec->sample_fmt);
822     const int coded_bps = av_get_bits_per_sample(enc->codec->id);
823
824 need_realloc:
825     audio_buf_size= (allocated_for_size + isize*dec->channels - 1) / (isize*dec->channels);
826     audio_buf_size= (audio_buf_size*enc->sample_rate + dec->sample_rate) / dec->sample_rate;
827     audio_buf_size= audio_buf_size*2 + 10000; //safety factors for the deprecated resampling API
828     audio_buf_size= FFMAX(audio_buf_size, enc->frame_size);
829     audio_buf_size*= osize*enc->channels;
830
831     audio_out_size= FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
832     if(coded_bps > 8*osize)
833         audio_out_size= audio_out_size * coded_bps / (8*osize);
834     audio_out_size += FF_MIN_BUFFER_SIZE;
835
836     if(audio_out_size > INT_MAX || audio_buf_size > INT_MAX){
837         fprintf(stderr, "Buffer sizes too large\n");
838         exit_program(1);
839     }
840
841     av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
842     av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
843     if (!audio_buf || !audio_out){
844         fprintf(stderr, "Out of memory in do_audio_out\n");
845         exit_program(1);
846     }
847
848     if (enc->channels != dec->channels || enc->sample_rate != dec->sample_rate)
849         ost->audio_resample = 1;
850
851     resample_changed = ost->resample_sample_fmt  != dec->sample_fmt ||
852                        ost->resample_channels    != dec->channels   ||
853                        ost->resample_sample_rate != dec->sample_rate;
854
855     if ((ost->audio_resample && !ost->resample) || resample_changed) {
856         if (resample_changed) {
857             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",
858                    ist->file_index, ist->st->index,
859                    ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
860                    dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
861             ost->resample_sample_fmt  = dec->sample_fmt;
862             ost->resample_channels    = dec->channels;
863             ost->resample_sample_rate = dec->sample_rate;
864             if (ost->resample)
865                 audio_resample_close(ost->resample);
866         }
867         /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
868         if (audio_sync_method <= 1 &&
869             ost->resample_sample_fmt  == enc->sample_fmt &&
870             ost->resample_channels    == enc->channels   &&
871             ost->resample_sample_rate == enc->sample_rate) {
872             ost->resample = NULL;
873             ost->audio_resample = 0;
874         } else if (ost->audio_resample) {
875             if (dec->sample_fmt != AV_SAMPLE_FMT_S16)
876                 fprintf(stderr, "Warning, using s16 intermediate sample format for resampling\n");
877             ost->resample = av_audio_resample_init(enc->channels,    dec->channels,
878                                                    enc->sample_rate, dec->sample_rate,
879                                                    enc->sample_fmt,  dec->sample_fmt,
880                                                    16, 10, 0, 0.8);
881             if (!ost->resample) {
882                 fprintf(stderr, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
883                         dec->channels, dec->sample_rate,
884                         enc->channels, enc->sample_rate);
885                 exit_program(1);
886             }
887         }
888     }
889
890 #define MAKE_SFMT_PAIR(a,b) ((a)+AV_SAMPLE_FMT_NB*(b))
891     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt &&
892         MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt)!=ost->reformat_pair) {
893         if (ost->reformat_ctx)
894             av_audio_convert_free(ost->reformat_ctx);
895         ost->reformat_ctx = av_audio_convert_alloc(enc->sample_fmt, 1,
896                                                    dec->sample_fmt, 1, NULL, 0);
897         if (!ost->reformat_ctx) {
898             fprintf(stderr, "Cannot convert %s sample format to %s sample format\n",
899                 av_get_sample_fmt_name(dec->sample_fmt),
900                 av_get_sample_fmt_name(enc->sample_fmt));
901             exit_program(1);
902         }
903         ost->reformat_pair=MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt);
904     }
905
906     if(audio_sync_method){
907         double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
908                 - av_fifo_size(ost->fifo)/(enc->channels * 2);
909         double idelta= delta*dec->sample_rate / enc->sample_rate;
910         int byte_delta= ((int)idelta)*2*dec->channels;
911
912         //FIXME resample delay
913         if(fabs(delta) > 50){
914             if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
915                 if(byte_delta < 0){
916                     byte_delta= FFMAX(byte_delta, -size);
917                     size += byte_delta;
918                     buf  -= byte_delta;
919                     if(verbose > 2)
920                         fprintf(stderr, "discarding %d audio samples\n", (int)-delta);
921                     if(!size)
922                         return;
923                     ist->is_start=0;
924                 }else{
925                     static uint8_t *input_tmp= NULL;
926                     input_tmp= av_realloc(input_tmp, byte_delta + size);
927
928                     if(byte_delta > allocated_for_size - size){
929                         allocated_for_size= byte_delta + (int64_t)size;
930                         goto need_realloc;
931                     }
932                     ist->is_start=0;
933
934                     memset(input_tmp, 0, byte_delta);
935                     memcpy(input_tmp + byte_delta, buf, size);
936                     buf= input_tmp;
937                     size += byte_delta;
938                     if(verbose > 2)
939                         fprintf(stderr, "adding %d audio samples of silence\n", (int)delta);
940                 }
941             }else if(audio_sync_method>1){
942                 int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
943                 av_assert0(ost->audio_resample);
944                 if(verbose > 2)
945                     fprintf(stderr, "compensating audio timestamp drift:%f compensation:%d in:%d\n", delta, comp, enc->sample_rate);
946 //                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));
947                 av_resample_compensate(*(struct AVResampleContext**)ost->resample, comp, enc->sample_rate);
948             }
949         }
950     }else
951         ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
952                         - av_fifo_size(ost->fifo)/(enc->channels * 2); //FIXME wrong
953
954     if (ost->audio_resample) {
955         buftmp = audio_buf;
956         size_out = audio_resample(ost->resample,
957                                   (short *)buftmp, (short *)buf,
958                                   size / (dec->channels * isize));
959         size_out = size_out * enc->channels * osize;
960     } else {
961         buftmp = buf;
962         size_out = size;
963     }
964
965     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt) {
966         const void *ibuf[6]= {buftmp};
967         void *obuf[6]= {audio_buf};
968         int istride[6]= {isize};
969         int ostride[6]= {osize};
970         int len= size_out/istride[0];
971         if (av_audio_convert(ost->reformat_ctx, obuf, ostride, ibuf, istride, len)<0) {
972             printf("av_audio_convert() failed\n");
973             if (exit_on_error)
974                 exit_program(1);
975             return;
976         }
977         buftmp = audio_buf;
978         size_out = len*osize;
979     }
980
981     /* now encode as many frames as possible */
982     if (enc->frame_size > 1) {
983         /* output resampled raw samples */
984         if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
985             fprintf(stderr, "av_fifo_realloc2() failed\n");
986             exit_program(1);
987         }
988         av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
989
990         frame_bytes = enc->frame_size * osize * enc->channels;
991
992         while (av_fifo_size(ost->fifo) >= frame_bytes) {
993             AVPacket pkt;
994             av_init_packet(&pkt);
995
996             av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
997
998             //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
999
1000             ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
1001                                        (short *)audio_buf);
1002             if (ret < 0) {
1003                 fprintf(stderr, "Audio encoding failed\n");
1004                 exit_program(1);
1005             }
1006             audio_size += ret;
1007             pkt.stream_index= ost->index;
1008             pkt.data= audio_out;
1009             pkt.size= ret;
1010             if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1011                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1012             pkt.flags |= AV_PKT_FLAG_KEY;
1013             write_frame(s, &pkt, enc, ost->bitstream_filters);
1014
1015             ost->sync_opts += enc->frame_size;
1016         }
1017     } else {
1018         AVPacket pkt;
1019         av_init_packet(&pkt);
1020
1021         ost->sync_opts += size_out / (osize * enc->channels);
1022
1023         /* output a pcm frame */
1024         /* determine the size of the coded buffer */
1025         size_out /= osize;
1026         if (coded_bps)
1027             size_out = size_out*coded_bps/8;
1028
1029         if(size_out > audio_out_size){
1030             fprintf(stderr, "Internal error, buffer size too small\n");
1031             exit_program(1);
1032         }
1033
1034         //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
1035         ret = avcodec_encode_audio(enc, audio_out, size_out,
1036                                    (short *)buftmp);
1037         if (ret < 0) {
1038             fprintf(stderr, "Audio encoding failed\n");
1039             exit_program(1);
1040         }
1041         audio_size += ret;
1042         pkt.stream_index= ost->index;
1043         pkt.data= audio_out;
1044         pkt.size= ret;
1045         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1046             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1047         pkt.flags |= AV_PKT_FLAG_KEY;
1048         write_frame(s, &pkt, enc, ost->bitstream_filters);
1049     }
1050 }
1051
1052 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
1053 {
1054     AVCodecContext *dec;
1055     AVPicture *picture2;
1056     AVPicture picture_tmp;
1057     uint8_t *buf = 0;
1058
1059     dec = ist->st->codec;
1060
1061     /* deinterlace : must be done before any resize */
1062     if (do_deinterlace) {
1063         int size;
1064
1065         /* create temporary picture */
1066         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1067         buf = av_malloc(size);
1068         if (!buf)
1069             return;
1070
1071         picture2 = &picture_tmp;
1072         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1073
1074         if(avpicture_deinterlace(picture2, picture,
1075                                  dec->pix_fmt, dec->width, dec->height) < 0) {
1076             /* if error, do not deinterlace */
1077             fprintf(stderr, "Deinterlacing failed\n");
1078             av_free(buf);
1079             buf = NULL;
1080             picture2 = picture;
1081         }
1082     } else {
1083         picture2 = picture;
1084     }
1085
1086     if (picture != picture2)
1087         *picture = *picture2;
1088     *bufp = buf;
1089 }
1090
1091 /* we begin to correct av delay at this threshold */
1092 #define AV_DELAY_MAX 0.100
1093
1094 static void do_subtitle_out(AVFormatContext *s,
1095                             OutputStream *ost,
1096                             InputStream *ist,
1097                             AVSubtitle *sub,
1098                             int64_t pts)
1099 {
1100     static uint8_t *subtitle_out = NULL;
1101     int subtitle_out_max_size = 1024 * 1024;
1102     int subtitle_out_size, nb, i;
1103     AVCodecContext *enc;
1104     AVPacket pkt;
1105
1106     if (pts == AV_NOPTS_VALUE) {
1107         fprintf(stderr, "Subtitle packets must have a pts\n");
1108         if (exit_on_error)
1109             exit_program(1);
1110         return;
1111     }
1112
1113     enc = ost->st->codec;
1114
1115     if (!subtitle_out) {
1116         subtitle_out = av_malloc(subtitle_out_max_size);
1117     }
1118
1119     /* Note: DVB subtitle need one packet to draw them and one other
1120        packet to clear them */
1121     /* XXX: signal it in the codec context ? */
1122     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1123         nb = 2;
1124     else
1125         nb = 1;
1126
1127     for(i = 0; i < nb; i++) {
1128         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1129         // start_display_time is required to be 0
1130         sub->pts              += av_rescale_q(sub->start_display_time, (AVRational){1, 1000}, AV_TIME_BASE_Q);
1131         sub->end_display_time -= sub->start_display_time;
1132         sub->start_display_time = 0;
1133         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1134                                                     subtitle_out_max_size, sub);
1135         if (subtitle_out_size < 0) {
1136             fprintf(stderr, "Subtitle encoding failed\n");
1137             exit_program(1);
1138         }
1139
1140         av_init_packet(&pkt);
1141         pkt.stream_index = ost->index;
1142         pkt.data = subtitle_out;
1143         pkt.size = subtitle_out_size;
1144         pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1145         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1146             /* XXX: the pts correction is handled here. Maybe handling
1147                it in the codec would be better */
1148             if (i == 0)
1149                 pkt.pts += 90 * sub->start_display_time;
1150             else
1151                 pkt.pts += 90 * sub->end_display_time;
1152         }
1153         write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1154     }
1155 }
1156
1157 static int bit_buffer_size= 1024*256;
1158 static uint8_t *bit_buffer= NULL;
1159
1160 static void do_video_out(AVFormatContext *s,
1161                          OutputStream *ost,
1162                          InputStream *ist,
1163                          AVFrame *in_picture,
1164                          int *frame_size, float quality)
1165 {
1166     int nb_frames, i, ret, resample_changed;
1167     AVFrame *final_picture, *formatted_picture;
1168     AVCodecContext *enc, *dec;
1169     double sync_ipts;
1170
1171     enc = ost->st->codec;
1172     dec = ist->st->codec;
1173
1174     sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1175
1176     /* by default, we output a single frame */
1177     nb_frames = 1;
1178
1179     *frame_size = 0;
1180
1181     if(video_sync_method){
1182         double vdelta = sync_ipts - ost->sync_opts;
1183         //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1184         if (vdelta < -1.1)
1185             nb_frames = 0;
1186         else if (video_sync_method == 2 || (video_sync_method<0 && (s->oformat->flags & AVFMT_VARIABLE_FPS))){
1187             if(vdelta<=-0.6){
1188                 nb_frames=0;
1189             }else if(vdelta>0.6)
1190                 ost->sync_opts= lrintf(sync_ipts);
1191         }else if (vdelta > 1.1)
1192             nb_frames = lrintf(vdelta);
1193 //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);
1194         if (nb_frames == 0){
1195             ++nb_frames_drop;
1196             if (verbose>2)
1197                 fprintf(stderr, "*** drop!\n");
1198         }else if (nb_frames > 1) {
1199             nb_frames_dup += nb_frames - 1;
1200             if (verbose>2)
1201                 fprintf(stderr, "*** %d dup!\n", nb_frames-1);
1202         }
1203     }else
1204         ost->sync_opts= lrintf(sync_ipts);
1205
1206     nb_frames= FFMIN(nb_frames, max_frames[AVMEDIA_TYPE_VIDEO] - ost->frame_number);
1207     if (nb_frames <= 0)
1208         return;
1209
1210     formatted_picture = in_picture;
1211     final_picture = formatted_picture;
1212
1213     resample_changed = ost->resample_width   != dec->width  ||
1214                        ost->resample_height  != dec->height ||
1215                        ost->resample_pix_fmt != dec->pix_fmt;
1216
1217     if (resample_changed) {
1218         av_log(NULL, AV_LOG_INFO,
1219                "Input stream #%d.%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1220                ist->file_index, ist->st->index,
1221                ost->resample_width, ost->resample_height, av_get_pix_fmt_name(ost->resample_pix_fmt),
1222                dec->width         , dec->height         , av_get_pix_fmt_name(dec->pix_fmt));
1223         if(!ost->video_resample)
1224             ost->video_resample = 1;
1225     }
1226
1227 #if !CONFIG_AVFILTER
1228     if (ost->video_resample) {
1229         final_picture = &ost->pict_tmp;
1230         if (resample_changed) {
1231             /* initialize a new scaler context */
1232             sws_freeContext(ost->img_resample_ctx);
1233             ost->img_resample_ctx = sws_getContext(
1234                 ist->st->codec->width,
1235                 ist->st->codec->height,
1236                 ist->st->codec->pix_fmt,
1237                 ost->st->codec->width,
1238                 ost->st->codec->height,
1239                 ost->st->codec->pix_fmt,
1240                 ost->sws_flags, NULL, NULL, NULL);
1241             if (ost->img_resample_ctx == NULL) {
1242                 fprintf(stderr, "Cannot get resampling context\n");
1243                 exit_program(1);
1244             }
1245         }
1246         sws_scale(ost->img_resample_ctx, formatted_picture->data, formatted_picture->linesize,
1247               0, ost->resample_height, final_picture->data, final_picture->linesize);
1248     }
1249 #else
1250     if (resample_changed) {
1251         avfilter_graph_free(&ost->graph);
1252         if (configure_video_filters(ist, ost)) {
1253             fprintf(stderr, "Error reinitialising filters!\n");
1254             exit_program(1);
1255         }
1256     }
1257 #endif
1258     if (resample_changed) {
1259         ost->resample_width   = dec->width;
1260         ost->resample_height  = dec->height;
1261         ost->resample_pix_fmt = dec->pix_fmt;
1262     }
1263
1264     /* duplicates frame if needed */
1265     for(i=0;i<nb_frames;i++) {
1266         AVPacket pkt;
1267         av_init_packet(&pkt);
1268         pkt.stream_index= ost->index;
1269
1270         if (s->oformat->flags & AVFMT_RAWPICTURE) {
1271             /* raw pictures are written as AVPicture structure to
1272                avoid any copies. We support temorarily the older
1273                method. */
1274             AVFrame* old_frame = enc->coded_frame;
1275             enc->coded_frame = dec->coded_frame; //FIXME/XXX remove this hack
1276             pkt.data= (uint8_t *)final_picture;
1277             pkt.size=  sizeof(AVPicture);
1278             pkt.pts= av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1279             pkt.flags |= AV_PKT_FLAG_KEY;
1280
1281             write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1282             enc->coded_frame = old_frame;
1283         } else {
1284             AVFrame big_picture;
1285
1286             big_picture= *final_picture;
1287             /* better than nothing: use input picture interlaced
1288                settings */
1289             big_picture.interlaced_frame = in_picture->interlaced_frame;
1290             if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1291                 if(top_field_first == -1)
1292                     big_picture.top_field_first = in_picture->top_field_first;
1293                 else
1294                     big_picture.top_field_first = top_field_first;
1295             }
1296
1297             /* handles same_quant here. This is not correct because it may
1298                not be a global option */
1299             big_picture.quality = quality;
1300             if(!me_threshold)
1301                 big_picture.pict_type = 0;
1302 //            big_picture.pts = AV_NOPTS_VALUE;
1303             big_picture.pts= ost->sync_opts;
1304 //            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1305 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1306             if (ost->forced_kf_index < ost->forced_kf_count &&
1307                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1308                 big_picture.pict_type = AV_PICTURE_TYPE_I;
1309                 ost->forced_kf_index++;
1310             }
1311             ret = avcodec_encode_video(enc,
1312                                        bit_buffer, bit_buffer_size,
1313                                        &big_picture);
1314             if (ret < 0) {
1315                 fprintf(stderr, "Video encoding failed\n");
1316                 exit_program(1);
1317             }
1318
1319             if(ret>0){
1320                 pkt.data= bit_buffer;
1321                 pkt.size= ret;
1322                 if(enc->coded_frame->pts != AV_NOPTS_VALUE)
1323                     pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1324 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1325    pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1326    pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1327
1328                 if(enc->coded_frame->key_frame)
1329                     pkt.flags |= AV_PKT_FLAG_KEY;
1330                 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1331                 *frame_size = ret;
1332                 video_size += ret;
1333                 //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1334                 //        enc->frame_number-1, ret, enc->pict_type);
1335                 /* if two pass, output log */
1336                 if (ost->logfile && enc->stats_out) {
1337                     fprintf(ost->logfile, "%s", enc->stats_out);
1338                 }
1339             }
1340         }
1341         ost->sync_opts++;
1342         ost->frame_number++;
1343     }
1344 }
1345
1346 static double psnr(double d){
1347     return -10.0*log(d)/log(10.0);
1348 }
1349
1350 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1351                            int frame_size)
1352 {
1353     AVCodecContext *enc;
1354     int frame_number;
1355     double ti1, bitrate, avg_bitrate;
1356
1357     /* this is executed just the first time do_video_stats is called */
1358     if (!vstats_file) {
1359         vstats_file = fopen(vstats_filename, "w");
1360         if (!vstats_file) {
1361             perror("fopen");
1362             exit_program(1);
1363         }
1364     }
1365
1366     enc = ost->st->codec;
1367     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1368         frame_number = ost->frame_number;
1369         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1370         if (enc->flags&CODEC_FLAG_PSNR)
1371             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
1372
1373         fprintf(vstats_file,"f_size= %6d ", frame_size);
1374         /* compute pts value */
1375         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1376         if (ti1 < 0.01)
1377             ti1 = 0.01;
1378
1379         bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1380         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1381         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1382             (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1383         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1384     }
1385 }
1386
1387 static void print_report(AVFormatContext **output_files,
1388                          OutputStream **ost_table, int nb_ostreams,
1389                          int is_last_report)
1390 {
1391     char buf[1024];
1392     OutputStream *ost;
1393     AVFormatContext *oc;
1394     int64_t total_size;
1395     AVCodecContext *enc;
1396     int frame_number, vid, i;
1397     double bitrate, ti1, pts;
1398     static int64_t last_time = -1;
1399     static int qp_histogram[52];
1400
1401     if (!is_last_report) {
1402         int64_t cur_time;
1403         /* display the report every 0.5 seconds */
1404         cur_time = av_gettime();
1405         if (last_time == -1) {
1406             last_time = cur_time;
1407             return;
1408         }
1409         if ((cur_time - last_time) < 500000)
1410             return;
1411         last_time = cur_time;
1412     }
1413
1414
1415     oc = output_files[0];
1416
1417     total_size = avio_size(oc->pb);
1418     if(total_size<0) // FIXME improve avio_size() so it works with non seekable output too
1419         total_size= avio_tell(oc->pb);
1420
1421     buf[0] = '\0';
1422     ti1 = 1e10;
1423     vid = 0;
1424     for(i=0;i<nb_ostreams;i++) {
1425         float q = -1;
1426         ost = ost_table[i];
1427         enc = ost->st->codec;
1428         if (!ost->st->stream_copy && enc->coded_frame)
1429             q = enc->coded_frame->quality/(float)FF_QP2LAMBDA;
1430         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1431             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1432         }
1433         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1434             float t = (av_gettime()-timer_start) / 1000000.0;
1435
1436             frame_number = ost->frame_number;
1437             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1438                      frame_number, (t>1)?(int)(frame_number/t+0.5) : 0, q);
1439             if(is_last_report)
1440                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1441             if(qp_hist){
1442                 int j;
1443                 int qp = lrintf(q);
1444                 if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
1445                     qp_histogram[qp]++;
1446                 for(j=0; j<32; j++)
1447                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
1448             }
1449             if (enc->flags&CODEC_FLAG_PSNR){
1450                 int j;
1451                 double error, error_sum=0;
1452                 double scale, scale_sum=0;
1453                 char type[3]= {'Y','U','V'};
1454                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1455                 for(j=0; j<3; j++){
1456                     if(is_last_report){
1457                         error= enc->error[j];
1458                         scale= enc->width*enc->height*255.0*255.0*frame_number;
1459                     }else{
1460                         error= enc->coded_frame->error[j];
1461                         scale= enc->width*enc->height*255.0*255.0;
1462                     }
1463                     if(j) scale/=4;
1464                     error_sum += error;
1465                     scale_sum += scale;
1466                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
1467                 }
1468                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
1469             }
1470             vid = 1;
1471         }
1472         /* compute min output value */
1473         pts = (double)ost->st->pts.val * av_q2d(ost->st->time_base);
1474         if ((pts < ti1) && (pts > 0))
1475             ti1 = pts;
1476     }
1477     if (ti1 < 0.01)
1478         ti1 = 0.01;
1479
1480     if (verbose > 0 || is_last_report) {
1481         bitrate = (double)(total_size * 8) / ti1 / 1000.0;
1482
1483         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1484             "size=%8.0fkB time=%0.2f bitrate=%6.1fkbits/s",
1485             (double)total_size / 1024, ti1, bitrate);
1486
1487         if (nb_frames_dup || nb_frames_drop)
1488           snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1489                   nb_frames_dup, nb_frames_drop);
1490
1491         if (verbose >= 0)
1492             fprintf(stderr, "%s    \r", buf);
1493
1494         fflush(stderr);
1495     }
1496
1497     if (is_last_report && verbose >= 0){
1498         int64_t raw= audio_size + video_size + extra_size;
1499         fprintf(stderr, "\n");
1500         fprintf(stderr, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1501                 video_size/1024.0,
1502                 audio_size/1024.0,
1503                 extra_size/1024.0,
1504                 100.0*(total_size - raw)/raw
1505         );
1506     }
1507 }
1508
1509 static void generate_silence(uint8_t* buf, enum AVSampleFormat sample_fmt, size_t size)
1510 {
1511     int fill_char = 0x00;
1512     if (sample_fmt == AV_SAMPLE_FMT_U8)
1513         fill_char = 0x80;
1514     memset(buf, fill_char, size);
1515 }
1516
1517 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1518 static int output_packet(InputStream *ist, int ist_index,
1519                          OutputStream **ost_table, int nb_ostreams,
1520                          const AVPacket *pkt)
1521 {
1522     AVFormatContext *os;
1523     OutputStream *ost;
1524     int ret, i;
1525     int got_output;
1526     AVFrame picture;
1527     void *buffer_to_free = NULL;
1528     static unsigned int samples_size= 0;
1529     AVSubtitle subtitle, *subtitle_to_free;
1530     int64_t pkt_pts = AV_NOPTS_VALUE;
1531 #if CONFIG_AVFILTER
1532     int frame_available;
1533 #endif
1534     float quality;
1535
1536     AVPacket avpkt;
1537     int bps = av_get_bytes_per_sample(ist->st->codec->sample_fmt);
1538
1539     if(ist->next_pts == AV_NOPTS_VALUE)
1540         ist->next_pts= ist->pts;
1541
1542     if (pkt == NULL) {
1543         /* EOF handling */
1544         av_init_packet(&avpkt);
1545         avpkt.data = NULL;
1546         avpkt.size = 0;
1547         goto handle_eof;
1548     } else {
1549         avpkt = *pkt;
1550     }
1551
1552     if(pkt->dts != AV_NOPTS_VALUE)
1553         ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1554     if(pkt->pts != AV_NOPTS_VALUE)
1555         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1556
1557     //while we have more to decode or while the decoder did output something on EOF
1558     while (avpkt.size > 0 || (!pkt && got_output)) {
1559         uint8_t *data_buf, *decoded_data_buf;
1560         int data_size, decoded_data_size;
1561     handle_eof:
1562         ist->pts= ist->next_pts;
1563
1564         if(avpkt.size && avpkt.size != pkt->size &&
1565            ((!ist->showed_multi_packet_warning && verbose>0) || verbose>1)){
1566             fprintf(stderr, "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1567             ist->showed_multi_packet_warning=1;
1568         }
1569
1570         /* decode the packet if needed */
1571         decoded_data_buf = NULL; /* fail safe */
1572         decoded_data_size= 0;
1573         data_buf  = avpkt.data;
1574         data_size = avpkt.size;
1575         subtitle_to_free = NULL;
1576         if (ist->decoding_needed) {
1577             switch(ist->st->codec->codec_type) {
1578             case AVMEDIA_TYPE_AUDIO:{
1579                 if(pkt && samples_size < FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE)) {
1580                     samples_size = FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE);
1581                     av_free(samples);
1582                     samples= av_malloc(samples_size);
1583                 }
1584                 decoded_data_size= samples_size;
1585                     /* XXX: could avoid copy if PCM 16 bits with same
1586                        endianness as CPU */
1587                 ret = avcodec_decode_audio3(ist->st->codec, samples, &decoded_data_size,
1588                                             &avpkt);
1589                 if (ret < 0)
1590                     return ret;
1591                 avpkt.data += ret;
1592                 avpkt.size -= ret;
1593                 data_size   = ret;
1594                 got_output  = decoded_data_size > 0;
1595                 /* Some bug in mpeg audio decoder gives */
1596                 /* decoded_data_size < 0, it seems they are overflows */
1597                 if (!got_output) {
1598                     /* no audio frame */
1599                     continue;
1600                 }
1601                 decoded_data_buf = (uint8_t *)samples;
1602                 ist->next_pts += ((int64_t)AV_TIME_BASE/bps * decoded_data_size) /
1603                     (ist->st->codec->sample_rate * ist->st->codec->channels);
1604                 break;}
1605             case AVMEDIA_TYPE_VIDEO:
1606                     decoded_data_size = (ist->st->codec->width * ist->st->codec->height * 3) / 2;
1607                     /* XXX: allocate picture correctly */
1608                     avcodec_get_frame_defaults(&picture);
1609                     avpkt.pts = pkt_pts;
1610                     avpkt.dts = ist->pts;
1611                     pkt_pts = AV_NOPTS_VALUE;
1612
1613                     ret = avcodec_decode_video2(ist->st->codec,
1614                                                 &picture, &got_output, &avpkt);
1615                     quality = same_quant ? picture.quality : 0;
1616                     if (ret < 0)
1617                         return ret;
1618                     if (!got_output) {
1619                         /* no picture yet */
1620                         goto discard_packet;
1621                     }
1622                     ist->next_pts = ist->pts = guess_correct_pts(&ist->pts_ctx, picture.pkt_pts, picture.pkt_dts);
1623                     if (ist->st->codec->time_base.num != 0) {
1624                         int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1625                         ist->next_pts += ((int64_t)AV_TIME_BASE *
1626                                           ist->st->codec->time_base.num * ticks) /
1627                             ist->st->codec->time_base.den;
1628                     }
1629                     avpkt.size = 0;
1630                     buffer_to_free = NULL;
1631                     pre_process_video_frame(ist, (AVPicture *)&picture, &buffer_to_free);
1632                     break;
1633             case AVMEDIA_TYPE_SUBTITLE:
1634                 ret = avcodec_decode_subtitle2(ist->st->codec,
1635                                                &subtitle, &got_output, &avpkt);
1636                 if (ret < 0)
1637                     return ret;
1638                 if (!got_output) {
1639                     goto discard_packet;
1640                 }
1641                 subtitle_to_free = &subtitle;
1642                 avpkt.size = 0;
1643                 break;
1644             default:
1645                 return -1;
1646             }
1647         } else {
1648             switch(ist->st->codec->codec_type) {
1649             case AVMEDIA_TYPE_AUDIO:
1650                 ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1651                     ist->st->codec->sample_rate;
1652                 break;
1653             case AVMEDIA_TYPE_VIDEO:
1654                 if (ist->st->codec->time_base.num != 0) {
1655                     int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1656                     ist->next_pts += ((int64_t)AV_TIME_BASE *
1657                                       ist->st->codec->time_base.num * ticks) /
1658                         ist->st->codec->time_base.den;
1659                 }
1660                 break;
1661             }
1662             ret = avpkt.size;
1663             avpkt.size = 0;
1664         }
1665
1666 #if CONFIG_AVFILTER
1667         if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1668             for (i = 0; i < nb_ostreams; i++) {
1669                 ost = ost_table[i];
1670                 if (ost->input_video_filter && ost->source_index == ist_index) {
1671                     AVRational sar;
1672                     if (ist->st->sample_aspect_ratio.num)
1673                         sar = ist->st->sample_aspect_ratio;
1674                     else
1675                         sar = ist->st->codec->sample_aspect_ratio;
1676                     // add it to be filtered
1677                     av_vsrc_buffer_add_frame(ost->input_video_filter, &picture,
1678                                              ist->pts,
1679                                              sar);
1680                 }
1681             }
1682         }
1683 #endif
1684
1685         // preprocess audio (volume)
1686         if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1687             if (audio_volume != 256) {
1688                 short *volp;
1689                 volp = samples;
1690                 for(i=0;i<(decoded_data_size / sizeof(short));i++) {
1691                     int v = ((*volp) * audio_volume + 128) >> 8;
1692                     if (v < -32768) v = -32768;
1693                     if (v >  32767) v = 32767;
1694                     *volp++ = v;
1695                 }
1696             }
1697         }
1698
1699         /* frame rate emulation */
1700         if (rate_emu) {
1701             int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1702             int64_t now = av_gettime() - ist->start;
1703             if (pts > now)
1704                 usleep(pts - now);
1705         }
1706         /* if output time reached then transcode raw format,
1707            encode packets and output them */
1708         if (start_time == 0 || ist->pts >= start_time)
1709             for(i=0;i<nb_ostreams;i++) {
1710                 int frame_size;
1711
1712                 ost = ost_table[i];
1713                 if (ost->source_index == ist_index) {
1714 #if CONFIG_AVFILTER
1715                 frame_available = ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO ||
1716                     !ost->output_video_filter || avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1717                 while (frame_available) {
1718                     AVRational ist_pts_tb;
1719                     if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ost->output_video_filter)
1720                         get_filtered_video_frame(ost->output_video_filter, &picture, &ost->picref, &ist_pts_tb);
1721                     if (ost->picref)
1722                         ist->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1723 #endif
1724                     os = output_files[ost->file_index];
1725
1726                     /* set the input output pts pairs */
1727                     //ost->sync_ipts = (double)(ist->pts + input_files[ist->file_index].ts_offset - start_time)/ AV_TIME_BASE;
1728
1729                     if (ost->encoding_needed) {
1730                         av_assert0(ist->decoding_needed);
1731                         switch(ost->st->codec->codec_type) {
1732                         case AVMEDIA_TYPE_AUDIO:
1733                             do_audio_out(os, ost, ist, decoded_data_buf, decoded_data_size);
1734                             break;
1735                         case AVMEDIA_TYPE_VIDEO:
1736 #if CONFIG_AVFILTER
1737                             if (ost->picref->video && !ost->frame_aspect_ratio)
1738                                 ost->st->codec->sample_aspect_ratio = ost->picref->video->pixel_aspect;
1739 #endif
1740                             do_video_out(os, ost, ist, &picture, &frame_size,
1741                                          same_quant ? quality : ost->st->codec->global_quality);
1742                             if (vstats_filename && frame_size)
1743                                 do_video_stats(os, ost, frame_size);
1744                             break;
1745                         case AVMEDIA_TYPE_SUBTITLE:
1746                             do_subtitle_out(os, ost, ist, &subtitle,
1747                                             pkt->pts);
1748                             break;
1749                         default:
1750                             abort();
1751                         }
1752                     } else {
1753                         AVFrame avframe; //FIXME/XXX remove this
1754                         AVPacket opkt;
1755                         int64_t ost_tb_start_time= av_rescale_q(start_time, AV_TIME_BASE_Q, ost->st->time_base);
1756
1757                         av_init_packet(&opkt);
1758
1759                         if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) && !copy_initial_nonkeyframes)
1760 #if !CONFIG_AVFILTER
1761                             continue;
1762 #else
1763                             goto cont;
1764 #endif
1765
1766                         /* no reencoding needed : output the packet directly */
1767                         /* force the input stream PTS */
1768
1769                         avcodec_get_frame_defaults(&avframe);
1770                         ost->st->codec->coded_frame= &avframe;
1771                         avframe.key_frame = pkt->flags & AV_PKT_FLAG_KEY;
1772
1773                         if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1774                             audio_size += data_size;
1775                         else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1776                             video_size += data_size;
1777                             ost->sync_opts++;
1778                         }
1779
1780                         opkt.stream_index= ost->index;
1781                         if(pkt->pts != AV_NOPTS_VALUE)
1782                             opkt.pts= av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1783                         else
1784                             opkt.pts= AV_NOPTS_VALUE;
1785
1786                         if (pkt->dts == AV_NOPTS_VALUE)
1787                             opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1788                         else
1789                             opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1790                         opkt.dts -= ost_tb_start_time;
1791
1792                         opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1793                         opkt.flags= pkt->flags;
1794
1795                         //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1796                         if(   ost->st->codec->codec_id != CODEC_ID_H264
1797                            && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1798                            && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1799                            ) {
1800                             if(av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, data_buf, data_size, pkt->flags & AV_PKT_FLAG_KEY))
1801                                 opkt.destruct= av_destruct_packet;
1802                         } else {
1803                             opkt.data = data_buf;
1804                             opkt.size = data_size;
1805                         }
1806
1807                         write_frame(os, &opkt, ost->st->codec, ost->bitstream_filters);
1808                         ost->st->codec->frame_number++;
1809                         ost->frame_number++;
1810                         av_free_packet(&opkt);
1811                     }
1812 #if CONFIG_AVFILTER
1813                     cont:
1814                     frame_available = (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) &&
1815                                        ost->output_video_filter && avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1816                     if (ost->picref)
1817                         avfilter_unref_buffer(ost->picref);
1818                 }
1819 #endif
1820                 }
1821             }
1822
1823         av_free(buffer_to_free);
1824         /* XXX: allocate the subtitles in the codec ? */
1825         if (subtitle_to_free) {
1826             avsubtitle_free(subtitle_to_free);
1827             subtitle_to_free = NULL;
1828         }
1829     }
1830  discard_packet:
1831     if (pkt == NULL) {
1832         /* EOF handling */
1833
1834         for(i=0;i<nb_ostreams;i++) {
1835             ost = ost_table[i];
1836             if (ost->source_index == ist_index) {
1837                 AVCodecContext *enc= ost->st->codec;
1838                 os = output_files[ost->file_index];
1839
1840                 if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
1841                     continue;
1842                 if(ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE))
1843                     continue;
1844
1845                 if (ost->encoding_needed) {
1846                     for(;;) {
1847                         AVPacket pkt;
1848                         int fifo_bytes;
1849                         av_init_packet(&pkt);
1850                         pkt.stream_index= ost->index;
1851
1852                         switch(ost->st->codec->codec_type) {
1853                         case AVMEDIA_TYPE_AUDIO:
1854                             fifo_bytes = av_fifo_size(ost->fifo);
1855                             ret = 0;
1856                             /* encode any samples remaining in fifo */
1857                             if (fifo_bytes > 0) {
1858                                 int osize = av_get_bytes_per_sample(enc->sample_fmt);
1859                                 int fs_tmp = enc->frame_size;
1860
1861                                 av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1862                                 if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1863                                     enc->frame_size = fifo_bytes / (osize * enc->channels);
1864                                 } else { /* pad */
1865                                     int frame_bytes = enc->frame_size*osize*enc->channels;
1866                                     if (allocated_audio_buf_size < frame_bytes)
1867                                         exit_program(1);
1868                                     generate_silence(audio_buf+fifo_bytes, enc->sample_fmt, frame_bytes - fifo_bytes);
1869                                 }
1870
1871                                 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1872                                 pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1873                                                           ost->st->time_base.num, enc->sample_rate);
1874                                 enc->frame_size = fs_tmp;
1875                             }
1876                             if(ret <= 0) {
1877                                 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1878                             }
1879                             if (ret < 0) {
1880                                 fprintf(stderr, "Audio encoding failed\n");
1881                                 exit_program(1);
1882                             }
1883                             audio_size += ret;
1884                             pkt.flags |= AV_PKT_FLAG_KEY;
1885                             break;
1886                         case AVMEDIA_TYPE_VIDEO:
1887                             ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1888                             if (ret < 0) {
1889                                 fprintf(stderr, "Video encoding failed\n");
1890                                 exit_program(1);
1891                             }
1892                             video_size += ret;
1893                             if(enc->coded_frame && enc->coded_frame->key_frame)
1894                                 pkt.flags |= AV_PKT_FLAG_KEY;
1895                             if (ost->logfile && enc->stats_out) {
1896                                 fprintf(ost->logfile, "%s", enc->stats_out);
1897                             }
1898                             break;
1899                         default:
1900                             ret=-1;
1901                         }
1902
1903                         if(ret<=0)
1904                             break;
1905                         pkt.data= bit_buffer;
1906                         pkt.size= ret;
1907                         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1908                             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1909                         write_frame(os, &pkt, ost->st->codec, ost->bitstream_filters);
1910                     }
1911                 }
1912             }
1913         }
1914     }
1915
1916     return 0;
1917 }
1918
1919 static void print_sdp(AVFormatContext **avc, int n)
1920 {
1921     char sdp[2048];
1922
1923     av_sdp_create(avc, n, sdp, sizeof(sdp));
1924     printf("SDP:\n%s\n", sdp);
1925     fflush(stdout);
1926 }
1927
1928 static int copy_chapters(int infile, int outfile)
1929 {
1930     AVFormatContext *is = input_files[infile].ctx;
1931     AVFormatContext *os = output_files[outfile];
1932     int i;
1933
1934     for (i = 0; i < is->nb_chapters; i++) {
1935         AVChapter *in_ch = is->chapters[i], *out_ch;
1936         int64_t ts_off   = av_rescale_q(start_time - input_files[infile].ts_offset,
1937                                       AV_TIME_BASE_Q, in_ch->time_base);
1938         int64_t rt       = (recording_time == INT64_MAX) ? INT64_MAX :
1939                            av_rescale_q(recording_time, AV_TIME_BASE_Q, in_ch->time_base);
1940
1941
1942         if (in_ch->end < ts_off)
1943             continue;
1944         if (rt != INT64_MAX && in_ch->start > rt + ts_off)
1945             break;
1946
1947         out_ch = av_mallocz(sizeof(AVChapter));
1948         if (!out_ch)
1949             return AVERROR(ENOMEM);
1950
1951         out_ch->id        = in_ch->id;
1952         out_ch->time_base = in_ch->time_base;
1953         out_ch->start     = FFMAX(0,  in_ch->start - ts_off);
1954         out_ch->end       = FFMIN(rt, in_ch->end   - ts_off);
1955
1956         if (metadata_chapters_autocopy)
1957             av_dict_copy(&out_ch->metadata, in_ch->metadata, 0);
1958
1959         os->nb_chapters++;
1960         os->chapters = av_realloc(os->chapters, sizeof(AVChapter)*os->nb_chapters);
1961         if (!os->chapters)
1962             return AVERROR(ENOMEM);
1963         os->chapters[os->nb_chapters - 1] = out_ch;
1964     }
1965     return 0;
1966 }
1967
1968 static void parse_forced_key_frames(char *kf, OutputStream *ost,
1969                                     AVCodecContext *avctx)
1970 {
1971     char *p;
1972     int n = 1, i;
1973     int64_t t;
1974
1975     for (p = kf; *p; p++)
1976         if (*p == ',')
1977             n++;
1978     ost->forced_kf_count = n;
1979     ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
1980     if (!ost->forced_kf_pts) {
1981         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
1982         exit_program(1);
1983     }
1984     for (i = 0; i < n; i++) {
1985         p = i ? strchr(p, ',') + 1 : kf;
1986         t = parse_time_or_die("force_key_frames", p, 1);
1987         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
1988     }
1989 }
1990
1991 /*
1992  * The following code is the main loop of the file converter
1993  */
1994 static int transcode(AVFormatContext **output_files,
1995                      int nb_output_files,
1996                      InputFile *input_files,
1997                      int nb_input_files)
1998 {
1999     int ret = 0, i, j, k, n, nb_ostreams = 0;
2000     AVFormatContext *is, *os;
2001     AVCodecContext *codec, *icodec;
2002     OutputStream *ost, **ost_table = NULL;
2003     InputStream *ist;
2004     char error[1024];
2005     int want_sdp = 1;
2006     uint8_t no_packet[MAX_FILES]={0};
2007     int no_packet_count=0;
2008
2009     if (rate_emu)
2010         for (i = 0; i < nb_input_streams; i++)
2011             input_streams[i].start = av_gettime();
2012
2013     /* output stream init */
2014     nb_ostreams = 0;
2015     for(i=0;i<nb_output_files;i++) {
2016         os = output_files[i];
2017         if (!os->nb_streams && !(os->oformat->flags & AVFMT_NOSTREAMS)) {
2018             av_dump_format(output_files[i], i, output_files[i]->filename, 1);
2019             fprintf(stderr, "Output file #%d does not contain any stream\n", i);
2020             ret = AVERROR(EINVAL);
2021             goto fail;
2022         }
2023         nb_ostreams += os->nb_streams;
2024     }
2025
2026     ost_table = av_mallocz(sizeof(OutputStream *) * nb_ostreams);
2027     if (!ost_table)
2028         goto fail;
2029     n = 0;
2030     for(k=0;k<nb_output_files;k++) {
2031         os = output_files[k];
2032         for (i = 0; i < os->nb_streams; i++, n++)
2033             ost_table[n] = output_streams_for_file[k][i];
2034     }
2035
2036     /* for each output stream, we compute the right encoding parameters */
2037     for(i=0;i<nb_ostreams;i++) {
2038         ost = ost_table[i];
2039         os = output_files[ost->file_index];
2040         ist = &input_streams[ost->source_index];
2041
2042         codec = ost->st->codec;
2043         icodec = ist->st->codec;
2044
2045         ost->st->disposition = ist->st->disposition;
2046         codec->bits_per_raw_sample= icodec->bits_per_raw_sample;
2047         codec->chroma_sample_location = icodec->chroma_sample_location;
2048
2049         if (ost->st->stream_copy) {
2050             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2051
2052             if (extra_size > INT_MAX)
2053                 goto fail;
2054
2055             /* if stream_copy is selected, no need to decode or encode */
2056             codec->codec_id = icodec->codec_id;
2057             codec->codec_type = icodec->codec_type;
2058
2059             if(!codec->codec_tag){
2060                 if(   !os->oformat->codec_tag
2061                    || av_codec_get_id (os->oformat->codec_tag, icodec->codec_tag) == codec->codec_id
2062                    || av_codec_get_tag(os->oformat->codec_tag, icodec->codec_id) <= 0)
2063                     codec->codec_tag = icodec->codec_tag;
2064             }
2065
2066             codec->bit_rate = icodec->bit_rate;
2067             codec->rc_max_rate    = icodec->rc_max_rate;
2068             codec->rc_buffer_size = icodec->rc_buffer_size;
2069             codec->extradata= av_mallocz(extra_size);
2070             if (!codec->extradata)
2071                 goto fail;
2072             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2073             codec->extradata_size= icodec->extradata_size;
2074             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){
2075                 codec->time_base = icodec->time_base;
2076                 codec->time_base.num *= icodec->ticks_per_frame;
2077                 av_reduce(&codec->time_base.num, &codec->time_base.den,
2078                           codec->time_base.num, codec->time_base.den, INT_MAX);
2079             }else
2080                 codec->time_base = ist->st->time_base;
2081             switch(codec->codec_type) {
2082             case AVMEDIA_TYPE_AUDIO:
2083                 if(audio_volume != 256) {
2084                     fprintf(stderr,"-acodec copy and -vol are incompatible (frames are not decoded)\n");
2085                     exit_program(1);
2086                 }
2087                 codec->channel_layout = icodec->channel_layout;
2088                 codec->sample_rate = icodec->sample_rate;
2089                 codec->channels = icodec->channels;
2090                 codec->frame_size = icodec->frame_size;
2091                 codec->audio_service_type = icodec->audio_service_type;
2092                 codec->block_align= icodec->block_align;
2093                 if(codec->block_align == 1 && codec->codec_id == CODEC_ID_MP3)
2094                     codec->block_align= 0;
2095                 if(codec->codec_id == CODEC_ID_AC3)
2096                     codec->block_align= 0;
2097                 break;
2098             case AVMEDIA_TYPE_VIDEO:
2099                 codec->pix_fmt = icodec->pix_fmt;
2100                 codec->width = icodec->width;
2101                 codec->height = icodec->height;
2102                 codec->has_b_frames = icodec->has_b_frames;
2103                 if (!codec->sample_aspect_ratio.num) {
2104                     codec->sample_aspect_ratio =
2105                     ost->st->sample_aspect_ratio =
2106                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2107                         ist->st->codec->sample_aspect_ratio.num ?
2108                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2109                 }
2110                 break;
2111             case AVMEDIA_TYPE_SUBTITLE:
2112                 codec->width = icodec->width;
2113                 codec->height = icodec->height;
2114                 break;
2115             case AVMEDIA_TYPE_DATA:
2116                 break;
2117             default:
2118                 abort();
2119             }
2120         } else {
2121             if (!ost->enc)
2122                 ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
2123             switch(codec->codec_type) {
2124             case AVMEDIA_TYPE_AUDIO:
2125                 ost->fifo= av_fifo_alloc(1024);
2126                 if(!ost->fifo)
2127                     goto fail;
2128                 ost->reformat_pair = MAKE_SFMT_PAIR(AV_SAMPLE_FMT_NONE,AV_SAMPLE_FMT_NONE);
2129                 if (!codec->sample_rate) {
2130                     codec->sample_rate = icodec->sample_rate;
2131                     if (icodec->lowres)
2132                         codec->sample_rate >>= icodec->lowres;
2133                 }
2134                 choose_sample_rate(ost->st, ost->enc);
2135                 codec->time_base = (AVRational){1, codec->sample_rate};
2136                 if (codec->sample_fmt == AV_SAMPLE_FMT_NONE)
2137                     codec->sample_fmt = icodec->sample_fmt;
2138                 choose_sample_fmt(ost->st, ost->enc);
2139                 if (!codec->channels)
2140                     codec->channels = icodec->channels;
2141                 codec->channel_layout = icodec->channel_layout;
2142                 if (av_get_channel_layout_nb_channels(codec->channel_layout) != codec->channels)
2143                     codec->channel_layout = 0;
2144                 ost->audio_resample = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
2145                 icodec->request_channels = codec->channels;
2146                 ist->decoding_needed = 1;
2147                 ost->encoding_needed = 1;
2148                 ost->resample_sample_fmt  = icodec->sample_fmt;
2149                 ost->resample_sample_rate = icodec->sample_rate;
2150                 ost->resample_channels    = icodec->channels;
2151                 break;
2152             case AVMEDIA_TYPE_VIDEO:
2153                 if (codec->pix_fmt == PIX_FMT_NONE)
2154                     codec->pix_fmt = icodec->pix_fmt;
2155                 choose_pixel_fmt(ost->st, ost->enc);
2156
2157                 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2158                     fprintf(stderr, "Video pixel format is unknown, stream cannot be encoded\n");
2159                     exit_program(1);
2160                 }
2161
2162                 if (!codec->width || !codec->height) {
2163                     codec->width  = icodec->width;
2164                     codec->height = icodec->height;
2165                 }
2166
2167                 ost->video_resample = codec->width   != icodec->width  ||
2168                                       codec->height  != icodec->height ||
2169                                       codec->pix_fmt != icodec->pix_fmt;
2170                 if (ost->video_resample) {
2171 #if !CONFIG_AVFILTER
2172                     avcodec_get_frame_defaults(&ost->pict_tmp);
2173                     if(avpicture_alloc((AVPicture*)&ost->pict_tmp, codec->pix_fmt,
2174                                        codec->width, codec->height)) {
2175                         fprintf(stderr, "Cannot allocate temp picture, check pix fmt\n");
2176                         exit_program(1);
2177                     }
2178                     ost->img_resample_ctx = sws_getContext(
2179                         icodec->width,
2180                         icodec->height,
2181                         icodec->pix_fmt,
2182                         codec->width,
2183                         codec->height,
2184                         codec->pix_fmt,
2185                         ost->sws_flags, NULL, NULL, NULL);
2186                     if (ost->img_resample_ctx == NULL) {
2187                         fprintf(stderr, "Cannot get resampling context\n");
2188                         exit_program(1);
2189                     }
2190 #endif
2191                     codec->bits_per_raw_sample= 0;
2192                 }
2193
2194                 ost->resample_height = icodec->height;
2195                 ost->resample_width  = icodec->width;
2196                 ost->resample_pix_fmt= icodec->pix_fmt;
2197                 ost->encoding_needed = 1;
2198                 ist->decoding_needed = 1;
2199
2200                 if (!ost->frame_rate.num)
2201                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25,1};
2202                 if (ost->enc && ost->enc->supported_framerates && !force_fps) {
2203                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2204                     ost->frame_rate = ost->enc->supported_framerates[idx];
2205                 }
2206                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
2207
2208 #if CONFIG_AVFILTER
2209                 if (configure_video_filters(ist, ost)) {
2210                     fprintf(stderr, "Error opening filters!\n");
2211                     exit(1);
2212                 }
2213 #endif
2214                 break;
2215             case AVMEDIA_TYPE_SUBTITLE:
2216                 ost->encoding_needed = 1;
2217                 ist->decoding_needed = 1;
2218                 break;
2219             default:
2220                 abort();
2221                 break;
2222             }
2223             /* two pass mode */
2224             if (ost->encoding_needed &&
2225                 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2226                 char logfilename[1024];
2227                 FILE *f;
2228
2229                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2230                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2231                          i);
2232                 if (codec->flags & CODEC_FLAG_PASS1) {
2233                     f = fopen(logfilename, "wb");
2234                     if (!f) {
2235                         fprintf(stderr, "Cannot write log file '%s' for pass-1 encoding: %s\n", logfilename, strerror(errno));
2236                         exit_program(1);
2237                     }
2238                     ost->logfile = f;
2239                 } else {
2240                     char  *logbuffer;
2241                     size_t logbuffer_size;
2242                     if (read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2243                         fprintf(stderr, "Error reading log file '%s' for pass-2 encoding\n", logfilename);
2244                         exit_program(1);
2245                     }
2246                     codec->stats_in = logbuffer;
2247                 }
2248             }
2249         }
2250         if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2251             int size= codec->width * codec->height;
2252             bit_buffer_size= FFMAX(bit_buffer_size, 6*size + 200);
2253         }
2254     }
2255
2256     if (!bit_buffer)
2257         bit_buffer = av_malloc(bit_buffer_size);
2258     if (!bit_buffer) {
2259         fprintf(stderr, "Cannot allocate %d bytes output buffer\n",
2260                 bit_buffer_size);
2261         ret = AVERROR(ENOMEM);
2262         goto fail;
2263     }
2264
2265     /* open each encoder */
2266     for(i=0;i<nb_ostreams;i++) {
2267         ost = ost_table[i];
2268         if (ost->encoding_needed) {
2269             AVCodec *codec = ost->enc;
2270             AVCodecContext *dec = input_streams[ost->source_index].st->codec;
2271             if (!codec) {
2272                 snprintf(error, sizeof(error), "Encoder (codec id %d) not found for output stream #%d.%d",
2273                          ost->st->codec->codec_id, ost->file_index, ost->index);
2274                 ret = AVERROR(EINVAL);
2275                 goto dump_format;
2276             }
2277             if (dec->subtitle_header) {
2278                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2279                 if (!ost->st->codec->subtitle_header) {
2280                     ret = AVERROR(ENOMEM);
2281                     goto dump_format;
2282                 }
2283                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2284                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2285             }
2286             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2287                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d.%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2288                         ost->file_index, ost->index);
2289                 ret = AVERROR(EINVAL);
2290                 goto dump_format;
2291             }
2292             assert_codec_experimental(ost->st->codec, 1);
2293             assert_avoptions(ost->opts);
2294             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2295                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2296                                              "It takes bits/s as argument, not kbits/s\n");
2297             extra_size += ost->st->codec->extradata_size;
2298         }
2299     }
2300
2301     /* open each decoder */
2302     for (i = 0; i < nb_input_streams; i++) {
2303         ist = &input_streams[i];
2304         if (ist->decoding_needed) {
2305             AVCodec *codec = ist->dec;
2306             if (!codec)
2307                 codec = avcodec_find_decoder(ist->st->codec->codec_id);
2308             if (!codec) {
2309                 snprintf(error, sizeof(error), "Decoder (codec id %d) not found for input stream #%d.%d",
2310                         ist->st->codec->codec_id, ist->file_index, ist->st->index);
2311                 ret = AVERROR(EINVAL);
2312                 goto dump_format;
2313             }
2314
2315             /* update requested sample format for the decoder based on the
2316                corresponding encoder sample format */
2317             for (j = 0; j < nb_ostreams; j++) {
2318                 ost = ost_table[j];
2319                 if (ost->source_index == i) {
2320                     update_sample_fmt(ist->st->codec, codec, ost->st->codec);
2321                     break;
2322                 }
2323             }
2324
2325             if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
2326                 snprintf(error, sizeof(error), "Error while opening decoder for input stream #%d.%d",
2327                         ist->file_index, ist->st->index);
2328                 ret = AVERROR(EINVAL);
2329                 goto dump_format;
2330             }
2331             assert_codec_experimental(ist->st->codec, 0);
2332             assert_avoptions(ost->opts);
2333         }
2334     }
2335
2336     /* init pts */
2337     for (i = 0; i < nb_input_streams; i++) {
2338         AVStream *st;
2339         ist = &input_streams[i];
2340         st= ist->st;
2341         ist->pts = st->avg_frame_rate.num ? - st->codec->has_b_frames*AV_TIME_BASE / av_q2d(st->avg_frame_rate) : 0;
2342         ist->next_pts = AV_NOPTS_VALUE;
2343         init_pts_correction(&ist->pts_ctx);
2344         ist->is_start = 1;
2345     }
2346
2347     /* open files and write file headers */
2348     for(i=0;i<nb_output_files;i++) {
2349         os = output_files[i];
2350         if (avformat_write_header(os, &output_opts[i]) < 0) {
2351             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2352             ret = AVERROR(EINVAL);
2353             goto dump_format;
2354         }
2355         assert_avoptions(output_opts[i]);
2356         if (strcmp(output_files[i]->oformat->name, "rtp")) {
2357             want_sdp = 0;
2358         }
2359     }
2360
2361  dump_format:
2362     /* dump the file output parameters - cannot be done before in case
2363        of stream copy */
2364     for(i=0;i<nb_output_files;i++) {
2365         av_dump_format(output_files[i], i, output_files[i]->filename, 1);
2366     }
2367
2368     /* dump the stream mapping */
2369     if (verbose >= 0) {
2370         fprintf(stderr, "Stream mapping:\n");
2371         for(i=0;i<nb_ostreams;i++) {
2372             ost = ost_table[i];
2373             fprintf(stderr, "  Stream #%d.%d -> #%d.%d",
2374                     input_streams[ost->source_index].file_index,
2375                     input_streams[ost->source_index].st->index,
2376                     ost->file_index,
2377                     ost->index);
2378             if (ost->sync_ist != &input_streams[ost->source_index])
2379                 fprintf(stderr, " [sync #%d.%d]",
2380                         ost->sync_ist->file_index,
2381                         ost->sync_ist->st->index);
2382             fprintf(stderr, "\n");
2383         }
2384     }
2385
2386     if (ret) {
2387         fprintf(stderr, "%s\n", error);
2388         goto fail;
2389     }
2390
2391     if (want_sdp) {
2392         print_sdp(output_files, nb_output_files);
2393     }
2394
2395     if (verbose >= 0)
2396         fprintf(stderr, "Press ctrl-c to stop encoding\n");
2397     term_init();
2398
2399     timer_start = av_gettime();
2400
2401     for(; received_sigterm == 0;) {
2402         int file_index, ist_index;
2403         AVPacket pkt;
2404         double ipts_min;
2405         double opts_min;
2406
2407     redo:
2408         ipts_min= 1e100;
2409         opts_min= 1e100;
2410
2411         /* select the stream that we must read now by looking at the
2412            smallest output pts */
2413         file_index = -1;
2414         for(i=0;i<nb_ostreams;i++) {
2415             double ipts, opts;
2416             ost = ost_table[i];
2417             os = output_files[ost->file_index];
2418             ist = &input_streams[ost->source_index];
2419             if(ist->is_past_recording_time || no_packet[ist->file_index])
2420                 continue;
2421                 opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2422             ipts = (double)ist->pts;
2423             if (!input_files[ist->file_index].eof_reached){
2424                 if(ipts < ipts_min) {
2425                     ipts_min = ipts;
2426                     if(input_sync ) file_index = ist->file_index;
2427                 }
2428                 if(opts < opts_min) {
2429                     opts_min = opts;
2430                     if(!input_sync) file_index = ist->file_index;
2431                 }
2432             }
2433             if(ost->frame_number >= max_frames[ost->st->codec->codec_type]){
2434                 file_index= -1;
2435                 break;
2436             }
2437         }
2438         /* if none, if is finished */
2439         if (file_index < 0) {
2440             if(no_packet_count){
2441                 no_packet_count=0;
2442                 memset(no_packet, 0, sizeof(no_packet));
2443                 usleep(10000);
2444                 continue;
2445             }
2446             break;
2447         }
2448
2449         /* finish if limit size exhausted */
2450         if (limit_filesize != 0 && limit_filesize <= avio_tell(output_files[0]->pb))
2451             break;
2452
2453         /* read a frame from it and output it in the fifo */
2454         is = input_files[file_index].ctx;
2455         ret= av_read_frame(is, &pkt);
2456         if(ret == AVERROR(EAGAIN)){
2457             no_packet[file_index]=1;
2458             no_packet_count++;
2459             continue;
2460         }
2461         if (ret < 0) {
2462             input_files[file_index].eof_reached = 1;
2463             if (opt_shortest)
2464                 break;
2465             else
2466                 continue;
2467         }
2468
2469         no_packet_count=0;
2470         memset(no_packet, 0, sizeof(no_packet));
2471
2472         if (do_pkt_dump) {
2473             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2474                              is->streams[pkt.stream_index]);
2475         }
2476         /* the following test is needed in case new streams appear
2477            dynamically in stream : we ignore them */
2478         if (pkt.stream_index >= input_files[file_index].ctx->nb_streams)
2479             goto discard_packet;
2480         ist_index = input_files[file_index].ist_index + pkt.stream_index;
2481         ist = &input_streams[ist_index];
2482         if (ist->discard)
2483             goto discard_packet;
2484
2485         if (pkt.dts != AV_NOPTS_VALUE)
2486             pkt.dts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2487         if (pkt.pts != AV_NOPTS_VALUE)
2488             pkt.pts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2489
2490         if (ist->ts_scale) {
2491             if(pkt.pts != AV_NOPTS_VALUE)
2492                 pkt.pts *= ist->ts_scale;
2493             if(pkt.dts != AV_NOPTS_VALUE)
2494                 pkt.dts *= ist->ts_scale;
2495         }
2496
2497 //        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);
2498         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2499             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2500             int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2501             int64_t delta= pkt_dts - ist->next_pts;
2502             if((FFABS(delta) > 1LL*dts_delta_threshold*AV_TIME_BASE || pkt_dts+1<ist->pts)&& !copy_ts){
2503                 input_files[ist->file_index].ts_offset -= delta;
2504                 if (verbose > 2)
2505                     fprintf(stderr, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2506                             delta, input_files[ist->file_index].ts_offset);
2507                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2508                 if(pkt.pts != AV_NOPTS_VALUE)
2509                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2510             }
2511         }
2512
2513         /* finish if recording time exhausted */
2514         if (recording_time != INT64_MAX &&
2515             av_compare_ts(pkt.pts, ist->st->time_base, recording_time + start_time, (AVRational){1, 1000000}) >= 0) {
2516             ist->is_past_recording_time = 1;
2517             goto discard_packet;
2518         }
2519
2520         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
2521         if (output_packet(ist, ist_index, ost_table, nb_ostreams, &pkt) < 0) {
2522
2523             if (verbose >= 0)
2524                 fprintf(stderr, "Error while decoding stream #%d.%d\n",
2525                         ist->file_index, ist->st->index);
2526             if (exit_on_error)
2527                 exit_program(1);
2528             av_free_packet(&pkt);
2529             goto redo;
2530         }
2531
2532     discard_packet:
2533         av_free_packet(&pkt);
2534
2535         /* dump report by using the output first video and audio streams */
2536         print_report(output_files, ost_table, nb_ostreams, 0);
2537     }
2538
2539     /* at the end of stream, we must flush the decoder buffers */
2540     for (i = 0; i < nb_input_streams; i++) {
2541         ist = &input_streams[i];
2542         if (ist->decoding_needed) {
2543             output_packet(ist, i, ost_table, nb_ostreams, NULL);
2544         }
2545     }
2546
2547     term_exit();
2548
2549     /* write the trailer if needed and close file */
2550     for(i=0;i<nb_output_files;i++) {
2551         os = output_files[i];
2552         av_write_trailer(os);
2553     }
2554
2555     /* dump report by using the first video and audio streams */
2556     print_report(output_files, ost_table, nb_ostreams, 1);
2557
2558     /* close each encoder */
2559     for(i=0;i<nb_ostreams;i++) {
2560         ost = ost_table[i];
2561         if (ost->encoding_needed) {
2562             av_freep(&ost->st->codec->stats_in);
2563             avcodec_close(ost->st->codec);
2564         }
2565 #if CONFIG_AVFILTER
2566         avfilter_graph_free(&ost->graph);
2567 #endif
2568     }
2569
2570     /* close each decoder */
2571     for (i = 0; i < nb_input_streams; i++) {
2572         ist = &input_streams[i];
2573         if (ist->decoding_needed) {
2574             avcodec_close(ist->st->codec);
2575         }
2576     }
2577
2578     /* finished ! */
2579     ret = 0;
2580
2581  fail:
2582     av_freep(&bit_buffer);
2583
2584     if (ost_table) {
2585         for(i=0;i<nb_ostreams;i++) {
2586             ost = ost_table[i];
2587             if (ost) {
2588                 if (ost->st->stream_copy)
2589                     av_freep(&ost->st->codec->extradata);
2590                 if (ost->logfile) {
2591                     fclose(ost->logfile);
2592                     ost->logfile = NULL;
2593                 }
2594                 av_fifo_free(ost->fifo); /* works even if fifo is not
2595                                              initialized but set to zero */
2596                 av_freep(&ost->st->codec->subtitle_header);
2597                 av_free(ost->pict_tmp.data[0]);
2598                 av_free(ost->forced_kf_pts);
2599                 if (ost->video_resample)
2600                     sws_freeContext(ost->img_resample_ctx);
2601                 if (ost->resample)
2602                     audio_resample_close(ost->resample);
2603                 if (ost->reformat_ctx)
2604                     av_audio_convert_free(ost->reformat_ctx);
2605                 av_dict_free(&ost->opts);
2606                 av_free(ost);
2607             }
2608         }
2609         av_free(ost_table);
2610     }
2611     return ret;
2612 }
2613
2614 static int opt_format(const char *opt, const char *arg)
2615 {
2616     last_asked_format = arg;
2617     return 0;
2618 }
2619
2620 static int opt_video_rc_override_string(const char *opt, const char *arg)
2621 {
2622     video_rc_override_string = arg;
2623     return 0;
2624 }
2625
2626 static int opt_me_threshold(const char *opt, const char *arg)
2627 {
2628     me_threshold = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
2629     return 0;
2630 }
2631
2632 static int opt_verbose(const char *opt, const char *arg)
2633 {
2634     verbose = parse_number_or_die(opt, arg, OPT_INT64, -10, 10);
2635     return 0;
2636 }
2637
2638 static int opt_frame_rate(const char *opt, const char *arg)
2639 {
2640     if (av_parse_video_rate(&frame_rate, arg) < 0) {
2641         fprintf(stderr, "Incorrect value for %s: %s\n", opt, arg);
2642         exit_program(1);
2643     }
2644     return 0;
2645 }
2646
2647 static int opt_frame_crop(const char *opt, const char *arg)
2648 {
2649     fprintf(stderr, "Option '%s' has been removed, use the crop filter instead\n", opt);
2650     return AVERROR(EINVAL);
2651 }
2652
2653 static int opt_frame_size(const char *opt, const char *arg)
2654 {
2655     if (av_parse_video_size(&frame_width, &frame_height, arg) < 0) {
2656         fprintf(stderr, "Incorrect frame size\n");
2657         return AVERROR(EINVAL);
2658     }
2659     return 0;
2660 }
2661
2662 static int opt_pad(const char *opt, const char *arg) {
2663     fprintf(stderr, "Option '%s' has been removed, use the pad filter instead\n", opt);
2664     return -1;
2665 }
2666
2667 static int opt_frame_pix_fmt(const char *opt, const char *arg)
2668 {
2669     if (strcmp(arg, "list")) {
2670         frame_pix_fmt = av_get_pix_fmt(arg);
2671         if (frame_pix_fmt == PIX_FMT_NONE) {
2672             fprintf(stderr, "Unknown pixel format requested: %s\n", arg);
2673             return AVERROR(EINVAL);
2674         }
2675     } else {
2676         show_pix_fmts();
2677         exit_program(0);
2678     }
2679     return 0;
2680 }
2681
2682 static int opt_frame_aspect_ratio(const char *opt, const char *arg)
2683 {
2684     int x = 0, y = 0;
2685     double ar = 0;
2686     const char *p;
2687     char *end;
2688
2689     p = strchr(arg, ':');
2690     if (p) {
2691         x = strtol(arg, &end, 10);
2692         if (end == p)
2693             y = strtol(end+1, &end, 10);
2694         if (x > 0 && y > 0)
2695             ar = (double)x / (double)y;
2696     } else
2697         ar = strtod(arg, NULL);
2698
2699     if (!ar) {
2700         fprintf(stderr, "Incorrect aspect ratio specification.\n");
2701         return AVERROR(EINVAL);
2702     }
2703     frame_aspect_ratio = ar;
2704     return 0;
2705 }
2706
2707 static int opt_metadata(const char *opt, const char *arg)
2708 {
2709     char *mid= strchr(arg, '=');
2710
2711     if(!mid){
2712         fprintf(stderr, "Missing =\n");
2713         exit_program(1);
2714     }
2715     *mid++= 0;
2716
2717     av_dict_set(&metadata, arg, mid, 0);
2718
2719     return 0;
2720 }
2721
2722 static int opt_qscale(const char *opt, const char *arg)
2723 {
2724     video_qscale = parse_number_or_die(opt, arg, OPT_FLOAT, 0, 255);
2725     if (video_qscale == 0) {
2726         fprintf(stderr, "qscale must be > 0.0 and <= 255\n");
2727         return AVERROR(EINVAL);
2728     }
2729     return 0;
2730 }
2731
2732 static int opt_top_field_first(const char *opt, const char *arg)
2733 {
2734     top_field_first = parse_number_or_die(opt, arg, OPT_INT, 0, 1);
2735     return 0;
2736 }
2737
2738 static int opt_thread_count(const char *opt, const char *arg)
2739 {
2740     thread_count= parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2741 #if !HAVE_THREADS
2742     if (verbose >= 0)
2743         fprintf(stderr, "Warning: not compiled with thread support, using thread emulation\n");
2744 #endif
2745     return 0;
2746 }
2747
2748 static int opt_audio_sample_fmt(const char *opt, const char *arg)
2749 {
2750     if (strcmp(arg, "list")) {
2751         audio_sample_fmt = av_get_sample_fmt(arg);
2752         if (audio_sample_fmt == AV_SAMPLE_FMT_NONE) {
2753             av_log(NULL, AV_LOG_ERROR, "Invalid sample format '%s'\n", arg);
2754             return AVERROR(EINVAL);
2755         }
2756     } else {
2757         int i;
2758         char fmt_str[128];
2759         for (i = -1; i < AV_SAMPLE_FMT_NB; i++)
2760             printf("%s\n", av_get_sample_fmt_string(fmt_str, sizeof(fmt_str), i));
2761         exit_program(0);
2762     }
2763     return 0;
2764 }
2765
2766 static int opt_audio_rate(const char *opt, const char *arg)
2767 {
2768     audio_sample_rate = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2769     return 0;
2770 }
2771
2772 static int opt_audio_channels(const char *opt, const char *arg)
2773 {
2774     audio_channels = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2775     return 0;
2776 }
2777
2778 static int opt_codec(const char *opt, const char *arg)
2779 {
2780     return av_dict_set(&codec_names, opt, arg, 0);
2781 }
2782
2783 static int opt_audio_codec(const char *opt, const char *arg)
2784 {
2785     return opt_codec("codec:a", arg);
2786 }
2787
2788 static int opt_video_codec(const char *opt, const char *arg)
2789 {
2790     return opt_codec("codec:v", arg);
2791 }
2792
2793 static int opt_subtitle_codec(const char *opt, const char *arg)
2794 {
2795     return opt_codec("codec:s", arg);
2796 }
2797
2798 static int opt_data_codec(const char *opt, const char *arg)
2799 {
2800     return opt_codec("codec:d", arg);
2801 }
2802
2803 static int opt_codec_tag(const char *opt, const char *arg)
2804 {
2805     char *tail;
2806     uint32_t *codec_tag;
2807
2808     codec_tag = !strcmp(opt, "atag") ? &audio_codec_tag :
2809                 !strcmp(opt, "vtag") ? &video_codec_tag :
2810                 !strcmp(opt, "stag") ? &subtitle_codec_tag : NULL;
2811     if (!codec_tag)
2812         return -1;
2813
2814     *codec_tag = strtol(arg, &tail, 0);
2815     if (!tail || *tail)
2816         *codec_tag = AV_RL32(arg);
2817
2818     return 0;
2819 }
2820
2821 static int opt_map(const char *opt, const char *arg)
2822 {
2823     StreamMap *m = NULL;
2824     int i, negative = 0, file_idx;
2825     int sync_file_idx = -1, sync_stream_idx;
2826     char *p, *sync;
2827     char *map;
2828
2829     if (*arg == '-') {
2830         negative = 1;
2831         arg++;
2832     }
2833     map = av_strdup(arg);
2834
2835     /* parse sync stream first, just pick first matching stream */
2836     if (sync = strchr(map, ',')) {
2837         *sync = 0;
2838         sync_file_idx = strtol(sync + 1, &sync, 0);
2839         if (sync_file_idx >= nb_input_files || sync_file_idx < 0) {
2840             av_log(NULL, AV_LOG_ERROR, "Invalid sync file index: %d.\n", sync_file_idx);
2841             exit_program(1);
2842         }
2843         if (*sync)
2844             sync++;
2845         for (i = 0; i < input_files[sync_file_idx].ctx->nb_streams; i++)
2846             if (check_stream_specifier(input_files[sync_file_idx].ctx,
2847                                        input_files[sync_file_idx].ctx->streams[i], sync) == 1) {
2848                 sync_stream_idx = i;
2849                 break;
2850             }
2851         if (i == input_files[sync_file_idx].ctx->nb_streams) {
2852             av_log(NULL, AV_LOG_ERROR, "Sync stream specification in map %s does not "
2853                                        "match any streams.\n", arg);
2854             exit_program(1);
2855         }
2856     }
2857
2858
2859     file_idx = strtol(map, &p, 0);
2860     if (file_idx >= nb_input_files || file_idx < 0) {
2861         av_log(NULL, AV_LOG_ERROR, "Invalid input file index: %d.\n", file_idx);
2862         exit_program(1);
2863     }
2864     if (negative)
2865         /* disable some already defined maps */
2866         for (i = 0; i < nb_stream_maps; i++) {
2867             m = &stream_maps[i];
2868             if (check_stream_specifier(input_files[m->file_index].ctx,
2869                                        input_files[m->file_index].ctx->streams[m->stream_index],
2870                                        *p == ':' ? p + 1 : p) > 0)
2871                 m->disabled = 1;
2872         }
2873     else
2874         for (i = 0; i < input_files[file_idx].ctx->nb_streams; i++) {
2875             if (check_stream_specifier(input_files[file_idx].ctx, input_files[file_idx].ctx->streams[i],
2876                         *p == ':' ? p + 1 : p) <= 0)
2877                 continue;
2878             stream_maps = grow_array(stream_maps, sizeof(*stream_maps), &nb_stream_maps, nb_stream_maps + 1);
2879             m = &stream_maps[nb_stream_maps - 1];
2880
2881             m->file_index   = file_idx;
2882             m->stream_index = i;
2883
2884             if (sync_file_idx >= 0) {
2885                 m->sync_file_index   = sync_file_idx;
2886                 m->sync_stream_index = sync_stream_idx;
2887             } else {
2888                 m->sync_file_index   = file_idx;
2889                 m->sync_stream_index = i;
2890             }
2891         }
2892
2893     if (!m) {
2894         av_log(NULL, AV_LOG_ERROR, "Stream map '%s' matches no streams.\n", arg);
2895         exit_program(1);
2896     }
2897
2898     av_freep(&map);
2899     return 0;
2900 }
2901
2902 static void parse_meta_type(char *arg, char *type, int *index)
2903 {
2904     if (*arg == ':') {
2905         *type = *(++arg);
2906         switch (*arg) {
2907         case 'g':
2908             break;
2909         case 's':
2910         case 'c':
2911         case 'p':
2912             if (*(++arg) == ':')
2913                 *index = strtol(++arg, NULL, 0);
2914             break;
2915         default:
2916             fprintf(stderr, "Invalid metadata type %c.\n", *arg);
2917             exit_program(1);
2918         }
2919     } else
2920         *type = 'g';
2921 }
2922
2923 static int opt_map_metadata(const char *opt, const char *arg)
2924 {
2925     MetadataMap *m, *m1;
2926     char *p;
2927
2928     meta_data_maps = grow_array(meta_data_maps, sizeof(*meta_data_maps),
2929                                 &nb_meta_data_maps, nb_meta_data_maps + 1);
2930
2931     m = &meta_data_maps[nb_meta_data_maps - 1][1];
2932     m->file = strtol(arg, &p, 0);
2933     parse_meta_type(p, &m->type, &m->index);
2934
2935     m1 = &meta_data_maps[nb_meta_data_maps - 1][0];
2936     if (p = strchr(opt, ':'))
2937         parse_meta_type(p, &m1->type, &m1->index);
2938     else
2939         m1->type = 'g';
2940
2941     if (m->type == 'g' || m1->type == 'g')
2942         metadata_global_autocopy = 0;
2943     if (m->type == 's' || m1->type == 's')
2944         metadata_streams_autocopy = 0;
2945     if (m->type == 'c' || m1->type == 'c')
2946         metadata_chapters_autocopy = 0;
2947
2948     return 0;
2949 }
2950
2951 static int opt_input_ts_scale(const char *opt, const char *arg)
2952 {
2953     unsigned int stream;
2954     double scale;
2955     char *p;
2956
2957     stream = strtol(arg, &p, 0);
2958     if (*p)
2959         p++;
2960     scale= strtod(p, &p);
2961
2962     ts_scale = grow_array(ts_scale, sizeof(*ts_scale), &nb_ts_scale, stream + 1);
2963     ts_scale[stream] = scale;
2964     return 0;
2965 }
2966
2967 static int opt_recording_time(const char *opt, const char *arg)
2968 {
2969     recording_time = parse_time_or_die(opt, arg, 1);
2970     return 0;
2971 }
2972
2973 static int opt_start_time(const char *opt, const char *arg)
2974 {
2975     start_time = parse_time_or_die(opt, arg, 1);
2976     return 0;
2977 }
2978
2979 static int opt_input_ts_offset(const char *opt, const char *arg)
2980 {
2981     input_ts_offset = parse_time_or_die(opt, arg, 1);
2982     return 0;
2983 }
2984
2985
2986 static int opt_input_file(const char *opt, const char *filename)
2987 {
2988     AVFormatContext *ic;
2989     AVInputFormat *file_iformat = NULL;
2990     int err, i, ret, rfps, rfps_base;
2991     int64_t timestamp;
2992     uint8_t buf[128];
2993     AVDictionary **opts;
2994     int orig_nb_streams;                     // number of streams before avformat_find_stream_info
2995
2996     if (last_asked_format) {
2997         if (!(file_iformat = av_find_input_format(last_asked_format))) {
2998             fprintf(stderr, "Unknown input format: '%s'\n", last_asked_format);
2999             exit_program(1);
3000         }
3001         last_asked_format = NULL;
3002     }
3003
3004     if (!strcmp(filename, "-"))
3005         filename = "pipe:";
3006
3007     using_stdin |= !strncmp(filename, "pipe:", 5) ||
3008                     !strcmp(filename, "/dev/stdin");
3009
3010     /* get default parameters from command line */
3011     ic = avformat_alloc_context();
3012     if (!ic) {
3013         print_error(filename, AVERROR(ENOMEM));
3014         exit_program(1);
3015     }
3016     if (audio_sample_rate) {
3017         snprintf(buf, sizeof(buf), "%d", audio_sample_rate);
3018         av_dict_set(&format_opts, "sample_rate", buf, 0);
3019     }
3020     if (audio_channels) {
3021         snprintf(buf, sizeof(buf), "%d", audio_channels);
3022         av_dict_set(&format_opts, "channels", buf, 0);
3023     }
3024     if (frame_rate.num) {
3025         snprintf(buf, sizeof(buf), "%d/%d", frame_rate.num, frame_rate.den);
3026         av_dict_set(&format_opts, "framerate", buf, 0);
3027     }
3028     if (frame_width && frame_height) {
3029         snprintf(buf, sizeof(buf), "%dx%d", frame_width, frame_height);
3030         av_dict_set(&format_opts, "video_size", buf, 0);
3031     }
3032     if (frame_pix_fmt != PIX_FMT_NONE)
3033         av_dict_set(&format_opts, "pixel_format", av_get_pix_fmt_name(frame_pix_fmt), 0);
3034
3035     ic->flags |= AVFMT_FLAG_NONBLOCK;
3036
3037     /* open the input file with generic libav function */
3038     err = avformat_open_input(&ic, filename, file_iformat, &format_opts);
3039     if (err < 0) {
3040         print_error(filename, err);
3041         exit_program(1);
3042     }
3043     assert_avoptions(format_opts);
3044
3045     if(opt_programid) {
3046         int i, j;
3047         int found=0;
3048         for(i=0; i<ic->nb_streams; i++){
3049             ic->streams[i]->discard= AVDISCARD_ALL;
3050         }
3051         for(i=0; i<ic->nb_programs; i++){
3052             AVProgram *p= ic->programs[i];
3053             if(p->id != opt_programid){
3054                 p->discard = AVDISCARD_ALL;
3055             }else{
3056                 found=1;
3057                 for(j=0; j<p->nb_stream_indexes; j++){
3058                     ic->streams[p->stream_index[j]]->discard= AVDISCARD_DEFAULT;
3059                 }
3060             }
3061         }
3062         if(!found){
3063             fprintf(stderr, "Specified program id not found\n");
3064             exit_program(1);
3065         }
3066         opt_programid=0;
3067     }
3068
3069     /* apply forced codec ids */
3070     for (i = 0; i < ic->nb_streams; i++)
3071         choose_codec(ic, ic->streams[i], ic->streams[i]->codec->codec_type, codec_names);
3072
3073     /* Set AVCodecContext options for avformat_find_stream_info */
3074     opts = setup_find_stream_info_opts(ic, codec_opts);
3075     orig_nb_streams = ic->nb_streams;
3076
3077     /* If not enough info to get the stream parameters, we decode the
3078        first frames to get it. (used in mpeg case for example) */
3079     ret = avformat_find_stream_info(ic, opts);
3080     if (ret < 0 && verbose >= 0) {
3081         fprintf(stderr, "%s: could not find codec parameters\n", filename);
3082         av_close_input_file(ic);
3083         exit_program(1);
3084     }
3085
3086     timestamp = start_time;
3087     /* add the stream start time */
3088     if (ic->start_time != AV_NOPTS_VALUE)
3089         timestamp += ic->start_time;
3090
3091     /* if seeking requested, we execute it */
3092     if (start_time != 0) {
3093         ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
3094         if (ret < 0) {
3095             fprintf(stderr, "%s: could not seek to position %0.3f\n",
3096                     filename, (double)timestamp / AV_TIME_BASE);
3097         }
3098         /* reset seek info */
3099         start_time = 0;
3100     }
3101
3102     /* update the current parameters so that they match the one of the input stream */
3103     for(i=0;i<ic->nb_streams;i++) {
3104         AVStream *st = ic->streams[i];
3105         AVCodecContext *dec = st->codec;
3106         InputStream *ist;
3107
3108         dec->thread_count = thread_count;
3109
3110         input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
3111         ist = &input_streams[nb_input_streams - 1];
3112         ist->st = st;
3113         ist->file_index = nb_input_files;
3114         ist->discard = 1;
3115         ist->opts = filter_codec_opts(codec_opts, ist->st->codec->codec_id, ic, st);
3116
3117         if (i < nb_ts_scale)
3118             ist->ts_scale = ts_scale[i];
3119
3120         ist->dec = choose_codec(ic, st, dec->codec_type, codec_names);
3121
3122         switch (dec->codec_type) {
3123         case AVMEDIA_TYPE_AUDIO:
3124             if(audio_disable)
3125                 st->discard= AVDISCARD_ALL;
3126             break;
3127         case AVMEDIA_TYPE_VIDEO:
3128             rfps      = ic->streams[i]->r_frame_rate.num;
3129             rfps_base = ic->streams[i]->r_frame_rate.den;
3130             if (dec->lowres) {
3131                 dec->flags |= CODEC_FLAG_EMU_EDGE;
3132                 dec->height >>= dec->lowres;
3133                 dec->width  >>= dec->lowres;
3134             }
3135             if(me_threshold)
3136                 dec->debug |= FF_DEBUG_MV;
3137
3138             if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
3139
3140                 if (verbose >= 0)
3141                     fprintf(stderr,"\nSeems stream %d codec frame rate differs from container frame rate: %2.2f (%d/%d) -> %2.2f (%d/%d)\n",
3142                             i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
3143
3144                     (float)rfps / rfps_base, rfps, rfps_base);
3145             }
3146
3147             if(video_disable)
3148                 st->discard= AVDISCARD_ALL;
3149             else if(video_discard)
3150                 st->discard= video_discard;
3151             break;
3152         case AVMEDIA_TYPE_DATA:
3153             break;
3154         case AVMEDIA_TYPE_SUBTITLE:
3155             if(subtitle_disable)
3156                 st->discard = AVDISCARD_ALL;
3157             break;
3158         case AVMEDIA_TYPE_ATTACHMENT:
3159         case AVMEDIA_TYPE_UNKNOWN:
3160             break;
3161         default:
3162             abort();
3163         }
3164     }
3165
3166     /* dump the file content */
3167     if (verbose >= 0)
3168         av_dump_format(ic, nb_input_files, filename, 0);
3169
3170     input_files = grow_array(input_files, sizeof(*input_files), &nb_input_files, nb_input_files + 1);
3171     input_files[nb_input_files - 1].ctx        = ic;
3172     input_files[nb_input_files - 1].ist_index  = nb_input_streams - ic->nb_streams;
3173     input_files[nb_input_files - 1].ts_offset  = input_ts_offset - (copy_ts ? 0 : timestamp);
3174
3175     frame_rate    = (AVRational){0, 0};
3176     frame_pix_fmt = PIX_FMT_NONE;
3177     frame_height = 0;
3178     frame_width  = 0;
3179     audio_sample_rate = 0;
3180     audio_channels    = 0;
3181     audio_sample_fmt  = AV_SAMPLE_FMT_NONE;
3182     av_freep(&ts_scale);
3183     nb_ts_scale = 0;
3184
3185     for (i = 0; i < orig_nb_streams; i++)
3186         av_dict_free(&opts[i]);
3187     av_freep(&opts);
3188     av_dict_free(&codec_names);
3189     uninit_opts();
3190     init_opts();
3191     return 0;
3192 }
3193
3194 static OutputStream *new_video_stream(AVFormatContext *oc, int file_idx)
3195 {
3196     AVStream *st;
3197     OutputStream *ost;
3198     AVCodecContext *video_enc;
3199
3200     ost = new_output_stream(oc, file_idx, AVMEDIA_TYPE_VIDEO);
3201     st  = ost->st;
3202     if (!st->stream_copy) {
3203         ost->frame_aspect_ratio = frame_aspect_ratio;
3204         frame_aspect_ratio = 0;
3205 #if CONFIG_AVFILTER
3206         ost->avfilter= vfilters;
3207         vfilters = NULL;
3208 #endif
3209     }
3210
3211     ost->bitstream_filters = video_bitstream_filters;
3212     video_bitstream_filters= NULL;
3213
3214     st->codec->thread_count= thread_count;
3215
3216     video_enc = st->codec;
3217
3218     if(video_codec_tag)
3219         video_enc->codec_tag= video_codec_tag;
3220
3221     if(oc->oformat->flags & AVFMT_GLOBALHEADER) {
3222         video_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3223     }
3224
3225     if (st->stream_copy) {
3226         video_enc->sample_aspect_ratio =
3227         st->sample_aspect_ratio = av_d2q(frame_aspect_ratio*frame_height/frame_width, 255);
3228     } else {
3229         const char *p;
3230         int i;
3231
3232         if (frame_rate.num)
3233             ost->frame_rate = frame_rate;
3234
3235         video_enc->width = frame_width;
3236         video_enc->height = frame_height;
3237         video_enc->pix_fmt = frame_pix_fmt;
3238         st->sample_aspect_ratio = video_enc->sample_aspect_ratio;
3239
3240         if (intra_only)
3241             video_enc->gop_size = 0;
3242         if (video_qscale || same_quant) {
3243             video_enc->flags |= CODEC_FLAG_QSCALE;
3244             video_enc->global_quality = FF_QP2LAMBDA * video_qscale;
3245         }
3246
3247         if(intra_matrix)
3248             video_enc->intra_matrix = intra_matrix;
3249         if(inter_matrix)
3250             video_enc->inter_matrix = inter_matrix;
3251
3252         p= video_rc_override_string;
3253         for(i=0; p; i++){
3254             int start, end, q;
3255             int e=sscanf(p, "%d,%d,%d", &start, &end, &q);
3256             if(e!=3){
3257                 fprintf(stderr, "error parsing rc_override\n");
3258                 exit_program(1);
3259             }
3260             video_enc->rc_override=
3261                 av_realloc(video_enc->rc_override,
3262                            sizeof(RcOverride)*(i+1));
3263             video_enc->rc_override[i].start_frame= start;
3264             video_enc->rc_override[i].end_frame  = end;
3265             if(q>0){
3266                 video_enc->rc_override[i].qscale= q;
3267                 video_enc->rc_override[i].quality_factor= 1.0;
3268             }
3269             else{
3270                 video_enc->rc_override[i].qscale= 0;
3271                 video_enc->rc_override[i].quality_factor= -q/100.0;
3272             }
3273             p= strchr(p, '/');
3274             if(p) p++;
3275         }
3276         video_enc->rc_override_count=i;
3277         if (!video_enc->rc_initial_buffer_occupancy)
3278             video_enc->rc_initial_buffer_occupancy = video_enc->rc_buffer_size*3/4;
3279         video_enc->me_threshold= me_threshold;
3280         video_enc->intra_dc_precision= intra_dc_precision - 8;
3281
3282         if (do_psnr)
3283             video_enc->flags|= CODEC_FLAG_PSNR;
3284
3285         /* two pass mode */
3286         if (do_pass) {
3287             if (do_pass == 1) {
3288                 video_enc->flags |= CODEC_FLAG_PASS1;
3289             } else {
3290                 video_enc->flags |= CODEC_FLAG_PASS2;
3291             }
3292         }
3293
3294         if (forced_key_frames)
3295             parse_forced_key_frames(forced_key_frames, ost, video_enc);
3296     }
3297     if (video_language) {
3298         av_dict_set(&st->metadata, "language", video_language, 0);
3299         av_freep(&video_language);
3300     }
3301
3302     /* reset some key parameters */
3303     video_disable = 0;
3304     av_freep(&forced_key_frames);
3305     frame_pix_fmt = PIX_FMT_NONE;
3306     return ost;
3307 }
3308
3309 static OutputStream *new_audio_stream(AVFormatContext *oc, int file_idx)
3310 {
3311     AVStream *st;
3312     OutputStream *ost;
3313     AVCodecContext *audio_enc;
3314
3315     ost = new_output_stream(oc, file_idx, AVMEDIA_TYPE_AUDIO);
3316     st  = ost->st;
3317
3318     ost->bitstream_filters = audio_bitstream_filters;
3319     audio_bitstream_filters= NULL;
3320
3321     st->codec->thread_count= thread_count;
3322
3323     audio_enc = st->codec;
3324     audio_enc->codec_type = AVMEDIA_TYPE_AUDIO;
3325
3326     if(audio_codec_tag)
3327         audio_enc->codec_tag= audio_codec_tag;
3328
3329     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3330         audio_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3331     }
3332     if (!st->stream_copy) {
3333         if (audio_qscale > QSCALE_NONE) {
3334             audio_enc->flags |= CODEC_FLAG_QSCALE;
3335             audio_enc->global_quality = FF_QP2LAMBDA * audio_qscale;
3336         }
3337         if (audio_channels)
3338             audio_enc->channels = audio_channels;
3339         if (audio_sample_fmt != AV_SAMPLE_FMT_NONE)
3340             audio_enc->sample_fmt = audio_sample_fmt;
3341         if (audio_sample_rate)
3342             audio_enc->sample_rate = audio_sample_rate;
3343     }
3344     if (audio_language) {
3345         av_dict_set(&st->metadata, "language", audio_language, 0);
3346         av_freep(&audio_language);
3347     }
3348
3349     /* reset some key parameters */
3350     audio_disable = 0;
3351
3352     return ost;
3353 }
3354
3355 static OutputStream *new_data_stream(AVFormatContext *oc, int file_idx)
3356 {
3357     AVStream *st;
3358     OutputStream *ost;
3359     AVCodecContext *data_enc;
3360
3361     ost = new_output_stream(oc, file_idx, AVMEDIA_TYPE_DATA);
3362     st  = ost->st;
3363     data_enc = st->codec;
3364     if (!st->stream_copy) {
3365         fprintf(stderr, "Data stream encoding not supported yet (only streamcopy)\n");
3366         exit_program(1);
3367     }
3368
3369     if (data_codec_tag)
3370         data_enc->codec_tag= data_codec_tag;
3371
3372     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3373         data_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3374     }
3375
3376     data_disable = 0;
3377     return ost;
3378 }
3379
3380 static OutputStream *new_subtitle_stream(AVFormatContext *oc, int file_idx)
3381 {
3382     AVStream *st;
3383     OutputStream *ost;
3384     AVCodecContext *subtitle_enc;
3385
3386     ost = new_output_stream(oc, file_idx, AVMEDIA_TYPE_SUBTITLE);
3387     st  = ost->st;
3388     subtitle_enc = st->codec;
3389
3390     ost->bitstream_filters = subtitle_bitstream_filters;
3391     subtitle_bitstream_filters= NULL;
3392
3393     subtitle_enc->codec_type = AVMEDIA_TYPE_SUBTITLE;
3394
3395     if(subtitle_codec_tag)
3396         subtitle_enc->codec_tag= subtitle_codec_tag;
3397
3398     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3399         subtitle_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3400     }
3401
3402     if (subtitle_language) {
3403         av_dict_set(&st->metadata, "language", subtitle_language, 0);
3404         av_freep(&subtitle_language);
3405     }
3406
3407     subtitle_disable = 0;
3408     return ost;
3409 }
3410
3411 /* arg format is "output-stream-index:streamid-value". */
3412 static int opt_streamid(const char *opt, const char *arg)
3413 {
3414     int idx;
3415     char *p;
3416     char idx_str[16];
3417
3418     av_strlcpy(idx_str, arg, sizeof(idx_str));
3419     p = strchr(idx_str, ':');
3420     if (!p) {
3421         fprintf(stderr,
3422                 "Invalid value '%s' for option '%s', required syntax is 'index:value'\n",
3423                 arg, opt);
3424         exit_program(1);
3425     }
3426     *p++ = '\0';
3427     idx = parse_number_or_die(opt, idx_str, OPT_INT, 0, INT_MAX);
3428     streamid_map = grow_array(streamid_map, sizeof(*streamid_map), &nb_streamid_map, idx+1);
3429     streamid_map[idx] = parse_number_or_die(opt, p, OPT_INT, 0, INT_MAX);
3430     return 0;
3431 }
3432
3433 static void opt_output_file(const char *filename)
3434 {
3435     AVFormatContext *oc;
3436     int i, err;
3437     AVOutputFormat *file_oformat;
3438     OutputStream *ost;
3439     InputStream  *ist;
3440
3441     if (!strcmp(filename, "-"))
3442         filename = "pipe:";
3443
3444     oc = avformat_alloc_context();
3445     if (!oc) {
3446         print_error(filename, AVERROR(ENOMEM));
3447         exit_program(1);
3448     }
3449
3450     if (last_asked_format) {
3451         file_oformat = av_guess_format(last_asked_format, NULL, NULL);
3452         if (!file_oformat) {
3453             fprintf(stderr, "Requested output format '%s' is not a suitable output format\n", last_asked_format);
3454             exit_program(1);
3455         }
3456         last_asked_format = NULL;
3457     } else {
3458         file_oformat = av_guess_format(NULL, filename, NULL);
3459         if (!file_oformat) {
3460             fprintf(stderr, "Unable to find a suitable output format for '%s'\n",
3461                     filename);
3462             exit_program(1);
3463         }
3464     }
3465
3466     oc->oformat = file_oformat;
3467     av_strlcpy(oc->filename, filename, sizeof(oc->filename));
3468
3469     if (!strcmp(file_oformat->name, "ffm") &&
3470         av_strstart(filename, "http:", NULL)) {
3471         /* special case for files sent to avserver: we get the stream
3472            parameters from avserver */
3473         int err = read_avserver_streams(oc, filename);
3474         if (err < 0) {
3475             print_error(filename, err);
3476             exit_program(1);
3477         }
3478     } else if (!nb_stream_maps) {
3479         /* pick the "best" stream of each type */
3480 #define NEW_STREAM(type, index)\
3481         if (index >= 0) {\
3482             ost = new_ ## type ## _stream(oc, nb_output_files);\
3483             ost->source_index = index;\
3484             ost->sync_ist     = &input_streams[index];\
3485             input_streams[index].discard = 0;\
3486         }
3487
3488         /* video: highest resolution */
3489         if (!video_disable && oc->oformat->video_codec != CODEC_ID_NONE) {
3490             int area = 0, idx = -1;
3491             for (i = 0; i < nb_input_streams; i++) {
3492                 ist = &input_streams[i];
3493                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
3494                     ist->st->codec->width * ist->st->codec->height > area) {
3495                     area = ist->st->codec->width * ist->st->codec->height;
3496                     idx = i;
3497                 }
3498             }
3499             NEW_STREAM(video, idx);
3500         }
3501
3502         /* audio: most channels */
3503         if (!audio_disable && oc->oformat->audio_codec != CODEC_ID_NONE) {
3504             int channels = 0, idx = -1;
3505             for (i = 0; i < nb_input_streams; i++) {
3506                 ist = &input_streams[i];
3507                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
3508                     ist->st->codec->channels > channels) {
3509                     channels = ist->st->codec->channels;
3510                     idx = i;
3511                 }
3512             }
3513             NEW_STREAM(audio, idx);
3514         }
3515
3516         /* subtitles: pick first */
3517         if (!subtitle_disable && oc->oformat->subtitle_codec != CODEC_ID_NONE) {
3518             for (i = 0; i < nb_input_streams; i++)
3519                 if (input_streams[i].st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3520                     NEW_STREAM(subtitle, i);
3521                     break;
3522                 }
3523         }
3524         /* do something with data? */
3525     } else {
3526         for (i = 0; i < nb_stream_maps; i++) {
3527             StreamMap *map = &stream_maps[i];
3528
3529             if (map->disabled)
3530                 continue;
3531
3532             ist = &input_streams[input_files[map->file_index].ist_index + map->stream_index];
3533             switch (ist->st->codec->codec_type) {
3534             case AVMEDIA_TYPE_VIDEO:    ost = new_video_stream(oc, nb_output_files);    break;
3535             case AVMEDIA_TYPE_AUDIO:    ost = new_audio_stream(oc, nb_output_files);    break;
3536             case AVMEDIA_TYPE_SUBTITLE: ost = new_subtitle_stream(oc, nb_output_files); break;
3537             case AVMEDIA_TYPE_DATA:     ost = new_data_stream(oc, nb_output_files);     break;
3538             default:
3539                 av_log(NULL, AV_LOG_ERROR, "Cannot map stream #%d.%d - unsupported type.\n",
3540                        map->file_index, map->stream_index);
3541                 exit_program(1);
3542             }
3543
3544             ost->source_index = input_files[map->file_index].ist_index + map->stream_index;
3545             ost->sync_ist = &input_streams[input_files[map->sync_file_index].ist_index +
3546                                            map->sync_stream_index];
3547             ist->discard = 0;
3548         }
3549     }
3550
3551     av_dict_copy(&oc->metadata, metadata, 0);
3552     av_dict_free(&metadata);
3553
3554     av_dict_copy(&output_opts[nb_output_files], format_opts, 0);
3555     output_files[nb_output_files++] = oc;
3556
3557     /* check filename in case of an image number is expected */
3558     if (oc->oformat->flags & AVFMT_NEEDNUMBER) {
3559         if (!av_filename_number_test(oc->filename)) {
3560             print_error(oc->filename, AVERROR(EINVAL));
3561             exit_program(1);
3562         }
3563     }
3564
3565     if (!(oc->oformat->flags & AVFMT_NOFILE)) {
3566         /* test if it already exists to avoid loosing precious files */
3567         if (!file_overwrite &&
3568             (strchr(filename, ':') == NULL ||
3569              filename[1] == ':' ||
3570              av_strstart(filename, "file:", NULL))) {
3571             if (avio_check(filename, 0) == 0) {
3572                 if (!using_stdin) {
3573                     fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
3574                     fflush(stderr);
3575                     if (!read_yesno()) {
3576                         fprintf(stderr, "Not overwriting - exiting\n");
3577                         exit_program(1);
3578                     }
3579                 }
3580                 else {
3581                     fprintf(stderr,"File '%s' already exists. Exiting.\n", filename);
3582                     exit_program(1);
3583                 }
3584             }
3585         }
3586
3587         /* open the file */
3588         if ((err = avio_open(&oc->pb, filename, AVIO_FLAG_WRITE)) < 0) {
3589             print_error(filename, err);
3590             exit_program(1);
3591         }
3592     }
3593
3594     oc->preload= (int)(mux_preload*AV_TIME_BASE);
3595     oc->max_delay= (int)(mux_max_delay*AV_TIME_BASE);
3596     oc->flags |= AVFMT_FLAG_NONBLOCK;
3597
3598     /* copy chapters */
3599     if (chapters_input_file >= nb_input_files) {
3600         if (chapters_input_file == INT_MAX) {
3601             /* copy chapters from the first input file that has them*/
3602             chapters_input_file = -1;
3603             for (i = 0; i < nb_input_files; i++)
3604                 if (input_files[i].ctx->nb_chapters) {
3605                     chapters_input_file = i;
3606                     break;
3607                 }
3608         } else {
3609             av_log(NULL, AV_LOG_ERROR, "Invalid input file index %d in chapter mapping.\n",
3610                    chapters_input_file);
3611             exit_program(1);
3612         }
3613     }
3614     if (chapters_input_file >= 0)
3615         copy_chapters(chapters_input_file, nb_output_files - 1);
3616
3617     /* copy metadata */
3618     for (i = 0; i < nb_meta_data_maps; i++) {
3619         AVFormatContext *files[2];
3620         AVDictionary    **meta[2];
3621         int j;
3622
3623 #define METADATA_CHECK_INDEX(index, nb_elems, desc)\
3624         if ((index) < 0 || (index) >= (nb_elems)) {\
3625             av_log(NULL, AV_LOG_ERROR, "Invalid %s index %d while processing metadata maps\n",\
3626                      (desc), (index));\
3627             exit_program(1);\
3628         }
3629
3630         int in_file_index = meta_data_maps[i][1].file;
3631         if (in_file_index < 0)
3632             continue;
3633         METADATA_CHECK_INDEX(in_file_index, nb_input_files, "input file")
3634
3635         files[0] = oc;
3636         files[1] = input_files[in_file_index].ctx;
3637
3638         for (j = 0; j < 2; j++) {
3639             MetadataMap *map = &meta_data_maps[i][j];
3640
3641             switch (map->type) {
3642             case 'g':
3643                 meta[j] = &files[j]->metadata;
3644                 break;
3645             case 's':
3646                 METADATA_CHECK_INDEX(map->index, files[j]->nb_streams, "stream")
3647                 meta[j] = &files[j]->streams[map->index]->metadata;
3648                 break;
3649             case 'c':
3650                 METADATA_CHECK_INDEX(map->index, files[j]->nb_chapters, "chapter")
3651                 meta[j] = &files[j]->chapters[map->index]->metadata;
3652                 break;
3653             case 'p':
3654                 METADATA_CHECK_INDEX(map->index, files[j]->nb_programs, "program")
3655                 meta[j] = &files[j]->programs[map->index]->metadata;
3656                 break;