36d870172ec43a88d7bba5cb41f0e44bab50fa1b
[libav.git] / ffmpeg.c
1 /*
2 * ffmpeg main
3 * Copyright (c) 2000-2003 Fabrice Bellard
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[] = "ffmpeg";
78 const int program_birth_year = 2000;
79
80 /* select an input stream for an output stream */
81 typedef struct StreamMap {
82 int file_index;
83 int stream_index;
84 int sync_file_index;
85 int sync_stream_index;
86 } StreamMap;
87
88 /**
89 * select an input file for an output file
90 */
91 typedef struct MetadataMap {
92 int file; ///< file index
93 char type; ///< type of metadata to copy -- (g)lobal, (s)tream, (c)hapter or (p)rogram
94 int index; ///< stream/chapter/program number
95 } MetadataMap;
96
97 typedef struct ChapterMap {
98 int in_file;
99 int out_file;
100 } ChapterMap;
101
102 static const OptionDef options[];
103
104 #define MAX_FILES 100
105
106 static const char *last_asked_format = NULL;
107 static double *ts_scale;
108 static int nb_ts_scale;
109
110 static AVFormatContext *output_files[MAX_FILES];
111 static AVDictionary *output_opts[MAX_FILES];
112 static int nb_output_files = 0;
113
114 static StreamMap *stream_maps = NULL;
115 static int nb_stream_maps;
116
117 /* first item specifies output metadata, second is input */
118 static MetadataMap (*meta_data_maps)[2] = NULL;
119 static int nb_meta_data_maps;
120 static int metadata_global_autocopy = 1;
121 static int metadata_streams_autocopy = 1;
122 static int metadata_chapters_autocopy = 1;
123
124 static ChapterMap *chapter_maps = NULL;
125 static int nb_chapter_maps;
126
127 /* indexed by output file stream index */
128 static int *streamid_map = NULL;
129 static int nb_streamid_map = 0;
130
131 static int frame_width = 0;
132 static int frame_height = 0;
133 static float frame_aspect_ratio = 0;
134 static enum PixelFormat frame_pix_fmt = PIX_FMT_NONE;
135 static enum AVSampleFormat audio_sample_fmt = AV_SAMPLE_FMT_NONE;
136 static int max_frames[4] = {INT_MAX, INT_MAX, INT_MAX, INT_MAX};
137 static AVRational frame_rate;
138 static float video_qscale = 0;
139 static uint16_t *intra_matrix = NULL;
140 static uint16_t *inter_matrix = NULL;
141 static const char *video_rc_override_string=NULL;
142 static int video_disable = 0;
143 static int video_discard = 0;
144 static char *video_codec_name = NULL;
145 static unsigned int video_codec_tag = 0;
146 static char *video_language = NULL;
147 static int same_quality = 0;
148 static int do_deinterlace = 0;
149 static int top_field_first = -1;
150 static int me_threshold = 0;
151 static int intra_dc_precision = 8;
152 static int loop_input = 0;
153 static int loop_output = AVFMT_NOOUTPUTLOOP;
154 static int qp_hist = 0;
155 #if CONFIG_AVFILTER
156 static char *vfilters = NULL;
157 #endif
158
159 static int intra_only = 0;
160 static int audio_sample_rate = 0;
161 #define QSCALE_NONE -99999
162 static float audio_qscale = QSCALE_NONE;
163 static int audio_disable = 0;
164 static int audio_channels = 0;
165 static char *audio_codec_name = NULL;
166 static unsigned int audio_codec_tag = 0;
167 static char *audio_language = NULL;
168
169 static int subtitle_disable = 0;
170 static char *subtitle_codec_name = NULL;
171 static char *subtitle_language = NULL;
172 static unsigned int subtitle_codec_tag = 0;
173
174 static int data_disable = 0;
175 static char *data_codec_name = NULL;
176 static unsigned int data_codec_tag = 0;
177
178 static float mux_preload= 0.5;
179 static float mux_max_delay= 0.7;
180
181 static int64_t recording_time = INT64_MAX;
182 static int64_t start_time = 0;
183 static int64_t input_ts_offset = 0;
184 static int file_overwrite = 0;
185 static AVDictionary *metadata;
186 static int do_benchmark = 0;
187 static int do_hex_dump = 0;
188 static int do_pkt_dump = 0;
189 static int do_psnr = 0;
190 static int do_pass = 0;
191 static char *pass_logfilename_prefix = NULL;
192 static int audio_stream_copy = 0;
193 static int video_stream_copy = 0;
194 static int subtitle_stream_copy = 0;
195 static int data_stream_copy = 0;
196 static int video_sync_method= -1;
197 static int audio_sync_method= 0;
198 static float audio_drift_threshold= 0.1;
199 static int copy_ts= 0;
200 static int copy_tb;
201 static int opt_shortest = 0;
202 static char *vstats_filename;
203 static FILE *vstats_file;
204 static int opt_programid = 0;
205 static int copy_initial_nonkeyframes = 0;
206
207 static int rate_emu = 0;
208
209 static int audio_volume = 256;
210
211 static int exit_on_error = 0;
212 static int using_stdin = 0;
213 static int verbose = 1;
214 static int thread_count= 1;
215 static int64_t video_size = 0;
216 static int64_t audio_size = 0;
217 static int64_t extra_size = 0;
218 static int nb_frames_dup = 0;
219 static int nb_frames_drop = 0;
220 static int input_sync;
221 static uint64_t limit_filesize = 0;
222 static int force_fps = 0;
223 static char *forced_key_frames = NULL;
224
225 static float dts_delta_threshold = 10;
226
227 static int64_t timer_start;
228
229 static uint8_t *audio_buf;
230 static uint8_t *audio_out;
231 static unsigned int allocated_audio_out_size, allocated_audio_buf_size;
232
233 static short *samples;
234
235 static AVBitStreamFilterContext *video_bitstream_filters=NULL;
236 static AVBitStreamFilterContext *audio_bitstream_filters=NULL;
237 static AVBitStreamFilterContext *subtitle_bitstream_filters=NULL;
238
239 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
240
241 struct InputStream;
242
243 typedef struct OutputStream {
244 int file_index; /* file index */
245 int index; /* stream index in the output file */
246 int source_index; /* InputStream index */
247 AVStream *st; /* stream in the output file */
248 int encoding_needed; /* true if encoding needed for this stream */
249 int frame_number;
250 /* input pts and corresponding output pts
251 for A/V sync */
252 //double sync_ipts; /* dts from the AVPacket of the demuxer in second units */
253 struct InputStream *sync_ist; /* input stream to sync against */
254 int64_t sync_opts; /* output frame counter, could be changed to some true timestamp */ //FIXME look at frame_number
255 AVBitStreamFilterContext *bitstream_filters;
256 AVCodec *enc;
257
258 /* video only */
259 int video_resample;
260 AVFrame pict_tmp; /* temporary image for resampling */
261 struct SwsContext *img_resample_ctx; /* for image resampling */
262 int resample_height;
263 int resample_width;
264 int resample_pix_fmt;
265 AVRational frame_rate;
266
267 float frame_aspect_ratio;
268
269 /* forced key frames */
270 int64_t *forced_kf_pts;
271 int forced_kf_count;
272 int forced_kf_index;
273
274 /* audio only */
275 int audio_resample;
276 ReSampleContext *resample; /* for audio resampling */
277 int resample_sample_fmt;
278 int resample_channels;
279 int resample_sample_rate;
280 int reformat_pair;
281 AVAudioConvert *reformat_ctx;
282 AVFifoBuffer *fifo; /* for compression: one audio fifo per codec */
283 FILE *logfile;
284
285 #if CONFIG_AVFILTER
286 AVFilterContext *output_video_filter;
287 AVFilterContext *input_video_filter;
288 AVFilterBufferRef *picref;
289 char *avfilter;
290 AVFilterGraph *graph;
291 #endif
292
293 int sws_flags;
294 AVDictionary *opts;
295 } OutputStream;
296
297 static OutputStream **output_streams_for_file[MAX_FILES] = { NULL };
298 static int nb_output_streams_for_file[MAX_FILES] = { 0 };
299
300 typedef struct InputStream {
301 int file_index;
302 AVStream *st;
303 int discard; /* true if stream data should be discarded */
304 int decoding_needed; /* true if the packets must be decoded in 'raw_fifo' */
305 AVCodec *dec;
306
307 int64_t start; /* time when read started */
308 int64_t next_pts; /* synthetic pts for cases where pkt.pts
309 is not defined */
310 int64_t pts; /* current pts */
311 PtsCorrectionContext pts_ctx;
312 double ts_scale;
313 int is_start; /* is 1 at the start and after a discontinuity */
314 int showed_multi_packet_warning;
315 int is_past_recording_time;
316 AVDictionary *opts;
317 } InputStream;
318
319 typedef struct InputFile {
320 AVFormatContext *ctx;
321 int eof_reached; /* true if eof reached */
322 int ist_index; /* index of first stream in ist_table */
323 int buffer_size; /* current total buffer size */
324 int64_t ts_offset;
325 } InputFile;
326
327 static InputStream *input_streams = NULL;
328 static int nb_input_streams = 0;
329 static InputFile *input_files = NULL;
330 static int nb_input_files = 0;
331
332 #if CONFIG_AVFILTER
333
334 static int configure_video_filters(InputStream *ist, OutputStream *ost)
335 {
336 AVFilterContext *last_filter, *filter;
337 /** filter graph containing all filters including input & output */
338 AVCodecContext *codec = ost->st->codec;
339 AVCodecContext *icodec = ist->st->codec;
340 FFSinkContext ffsink_ctx = { .pix_fmt = codec->pix_fmt };
341 AVRational sample_aspect_ratio;
342 char args[255];
343 int ret;
344
345 ost->graph = avfilter_graph_alloc();
346
347 if (ist->st->sample_aspect_ratio.num){
348 sample_aspect_ratio = ist->st->sample_aspect_ratio;
349 }else
350 sample_aspect_ratio = ist->st->codec->sample_aspect_ratio;
351
352 snprintf(args, 255, "%d:%d:%d:%d:%d:%d:%d", ist->st->codec->width,
353 ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE,
354 sample_aspect_ratio.num, sample_aspect_ratio.den);
355
356 ret = avfilter_graph_create_filter(&ost->input_video_filter, avfilter_get_by_name("buffer"),
357 "src", args, NULL, ost->graph);
358 if (ret < 0)
359 return ret;
360 ret = avfilter_graph_create_filter(&ost->output_video_filter, &ffsink,
361 "out", NULL, &ffsink_ctx, ost->graph);
362 if (ret < 0)
363 return ret;
364 last_filter = ost->input_video_filter;
365
366 if (codec->width != icodec->width || codec->height != icodec->height) {
367 snprintf(args, 255, "%d:%d:flags=0x%X",
368 codec->width,
369 codec->height,
370 ost->sws_flags);
371 if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
372 NULL, args, NULL, ost->graph)) < 0)
373 return ret;
374 if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
375 return ret;
376 last_filter = filter;
377 }
378
379 snprintf(args, sizeof(args), "flags=0x%X", ost->sws_flags);
380 ost->graph->scale_sws_opts = av_strdup(args);
381
382 if (ost->avfilter) {
383 AVFilterInOut *outputs = av_malloc(sizeof(AVFilterInOut));
384 AVFilterInOut *inputs = av_malloc(sizeof(AVFilterInOut));
385
386 outputs->name = av_strdup("in");
387 outputs->filter_ctx = last_filter;
388 outputs->pad_idx = 0;
389 outputs->next = NULL;
390
391 inputs->name = av_strdup("out");
392 inputs->filter_ctx = ost->output_video_filter;
393 inputs->pad_idx = 0;
394 inputs->next = NULL;
395
396 if ((ret = avfilter_graph_parse(ost->graph, ost->avfilter, inputs, outputs, NULL)) < 0)
397 return ret;
398 av_freep(&ost->avfilter);
399 } else {
400 if ((ret = avfilter_link(last_filter, 0, ost->output_video_filter, 0)) < 0)
401 return ret;
402 }
403
404 if ((ret = avfilter_graph_config(ost->graph, NULL)) < 0)
405 return ret;
406
407 codec->width = ost->output_video_filter->inputs[0]->w;
408 codec->height = ost->output_video_filter->inputs[0]->h;
409 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
410 ost->frame_aspect_ratio ? // overriden by the -aspect cli option
411 av_d2q(ost->frame_aspect_ratio*codec->height/codec->width, 255) :
412 ost->output_video_filter->inputs[0]->sample_aspect_ratio;
413
414 return 0;
415 }
416 #endif /* CONFIG_AVFILTER */
417
418 static void term_exit(void)
419 {
420 av_log(NULL, AV_LOG_QUIET, "");
421 }
422
423 static volatile int received_sigterm = 0;
424 static volatile int received_nb_signals = 0;
425
426 static void
427 sigterm_handler(int sig)
428 {
429 received_sigterm = sig;
430 received_nb_signals++;
431 term_exit();
432 }
433
434 static void term_init(void)
435 {
436 signal(SIGINT , sigterm_handler); /* Interrupt (ANSI). */
437 signal(SIGTERM, sigterm_handler); /* Termination (ANSI). */
438 #ifdef SIGXCPU
439 signal(SIGXCPU, sigterm_handler);
440 #endif
441 }
442
443 static int decode_interrupt_cb(void)
444 {
445 return received_nb_signals > 1;
446 }
447
448 static int ffmpeg_exit(int ret)
449 {
450 int i;
451
452 /* close files */
453 for(i=0;i<nb_output_files;i++) {
454 AVFormatContext *s = output_files[i];
455 if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
456 avio_close(s->pb);
457 avformat_free_context(s);
458 av_free(output_streams_for_file[i]);
459 av_dict_free(&output_opts[i]);
460 }
461 for(i=0;i<nb_input_files;i++) {
462 av_close_input_file(input_files[i].ctx);
463 }
464 for (i = 0; i < nb_input_streams; i++)
465 av_dict_free(&input_streams[i].opts);
466
467 av_free(intra_matrix);
468 av_free(inter_matrix);
469
470 if (vstats_file)
471 fclose(vstats_file);
472 av_free(vstats_filename);
473
474 av_free(streamid_map);
475 av_free(stream_maps);
476 av_free(meta_data_maps);
477
478 av_freep(&input_streams);
479 av_freep(&input_files);
480
481 av_free(video_codec_name);
482 av_free(audio_codec_name);
483 av_free(subtitle_codec_name);
484 av_free(data_codec_name);
485
486 uninit_opts();
487 av_free(audio_buf);
488 av_free(audio_out);
489 allocated_audio_buf_size= allocated_audio_out_size= 0;
490 av_free(samples);
491
492 #if CONFIG_AVFILTER
493 avfilter_uninit();
494 #endif
495
496 if (received_sigterm) {
497 fprintf(stderr,
498 "Received signal %d: terminating.\n",
499 (int) received_sigterm);
500 exit (255);
501 }
502
503 exit(ret); /* not all OS-es handle main() return value */
504 return ret;
505 }
506
507 static void assert_avoptions(AVDictionary *m)
508 {
509 AVDictionaryEntry *t;
510 if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
511 av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
512 ffmpeg_exit(1);
513 }
514 }
515
516 static void assert_codec_experimental(AVCodecContext *c, int encoder)
517 {
518 const char *codec_string = encoder ? "encoder" : "decoder";
519 AVCodec *codec;
520 if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
521 c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
522 av_log(NULL, AV_LOG_ERROR, "%s '%s' is experimental and might produce bad "
523 "results.\nAdd '-strict experimental' if you want to use it.\n",
524 codec_string, c->codec->name);
525 codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
526 if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
527 av_log(NULL, AV_LOG_ERROR, "Or use the non experimental %s '%s'.\n",
528 codec_string, codec->name);
529 ffmpeg_exit(1);
530 }
531 }
532
533 /* similar to ff_dynarray_add() and av_fast_realloc() */
534 static void *grow_array(void *array, int elem_size, int *size, int new_size)
535 {
536 if (new_size >= INT_MAX / elem_size) {
537 fprintf(stderr, "Array too big.\n");
538 ffmpeg_exit(1);
539 }
540 if (*size < new_size) {
541 uint8_t *tmp = av_realloc(array, new_size*elem_size);
542 if (!tmp) {
543 fprintf(stderr, "Could not alloc buffer.\n");
544 ffmpeg_exit(1);
545 }
546 memset(tmp + *size*elem_size, 0, (new_size-*size) * elem_size);
547 *size = new_size;
548 return tmp;
549 }
550 return array;
551 }
552
553 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
554 {
555 if(codec && codec->sample_fmts){
556 const enum AVSampleFormat *p= codec->sample_fmts;
557 for(; *p!=-1; p++){
558 if(*p == st->codec->sample_fmt)
559 break;
560 }
561 if (*p == -1) {
562 av_log(NULL, AV_LOG_WARNING,
563 "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
564 av_get_sample_fmt_name(st->codec->sample_fmt),
565 codec->name,
566 av_get_sample_fmt_name(codec->sample_fmts[0]));
567 st->codec->sample_fmt = codec->sample_fmts[0];
568 }
569 }
570 }
571
572 /**
573 * Update the requested input sample format based on the output sample format.
574 * This is currently only used to request float output from decoders which
575 * support multiple sample formats, one of which is AV_SAMPLE_FMT_FLT.
576 * Ideally this will be removed in the future when decoders do not do format
577 * conversion and only output in their native format.
578 */
579 static void update_sample_fmt(AVCodecContext *dec, AVCodec *dec_codec,
580 AVCodecContext *enc)
581 {
582 /* if sample formats match or a decoder sample format has already been
583 requested, just return */
584 if (enc->sample_fmt == dec->sample_fmt ||
585 dec->request_sample_fmt > AV_SAMPLE_FMT_NONE)
586 return;
587
588 /* if decoder supports more than one output format */
589 if (dec_codec && dec_codec->sample_fmts &&
590 dec_codec->sample_fmts[0] != AV_SAMPLE_FMT_NONE &&
591 dec_codec->sample_fmts[1] != AV_SAMPLE_FMT_NONE) {
592 const enum AVSampleFormat *p;
593 int min_dec = -1, min_inc = -1;
594
595 /* find a matching sample format in the encoder */
596 for (p = dec_codec->sample_fmts; *p != AV_SAMPLE_FMT_NONE; p++) {
597 if (*p == enc->sample_fmt) {
598 dec->request_sample_fmt = *p;
599 return;
600 } else if (*p > enc->sample_fmt) {
601 min_inc = FFMIN(min_inc, *p - enc->sample_fmt);
602 } else
603 min_dec = FFMIN(min_dec, enc->sample_fmt - *p);
604 }
605
606 /* if none match, provide the one that matches quality closest */
607 dec->request_sample_fmt = min_inc > 0 ? enc->sample_fmt + min_inc :
608 enc->sample_fmt - min_dec;
609 }
610 }
611
612 static void choose_sample_rate(AVStream *st, AVCodec *codec)
613 {
614 if(codec && codec->supported_samplerates){
615 const int *p= codec->supported_samplerates;
616 int best=0;
617 int best_dist=INT_MAX;
618 for(; *p; p++){
619 int dist= abs(st->codec->sample_rate - *p);
620 if(dist < best_dist){
621 best_dist= dist;
622 best= *p;
623 }
624 }
625 if(best_dist){
626 av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
627 }
628 st->codec->sample_rate= best;
629 }
630 }
631
632 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
633 {
634 if(codec && codec->pix_fmts){
635 const enum PixelFormat *p= codec->pix_fmts;
636 if(st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL){
637 if(st->codec->codec_id==CODEC_ID_MJPEG){
638 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE};
639 }else if(st->codec->codec_id==CODEC_ID_LJPEG){
640 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};
641 }
642 }
643 for(; *p!=-1; p++){
644 if(*p == st->codec->pix_fmt)
645 break;
646 }
647 if (*p == -1) {
648 if(st->codec->pix_fmt != PIX_FMT_NONE)
649 av_log(NULL, AV_LOG_WARNING,
650 "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
651 av_pix_fmt_descriptors[st->codec->pix_fmt].name,
652 codec->name,
653 av_pix_fmt_descriptors[codec->pix_fmts[0]].name);
654 st->codec->pix_fmt = codec->pix_fmts[0];
655 }
656 }
657 }
658
659 static OutputStream *new_output_stream(AVFormatContext *oc, int file_idx, AVCodec *codec)
660 {
661 OutputStream *ost;
662 AVStream *st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
663 int idx = oc->nb_streams - 1;
664
665 if (!st) {
666 av_log(NULL, AV_LOG_ERROR, "Could not alloc stream.\n");
667 ffmpeg_exit(1);
668 }
669
670 output_streams_for_file[file_idx] =
671 grow_array(output_streams_for_file[file_idx],
672 sizeof(*output_streams_for_file[file_idx]),
673 &nb_output_streams_for_file[file_idx],
674 oc->nb_streams);
675 ost = output_streams_for_file[file_idx][idx] =
676 av_mallocz(sizeof(OutputStream));
677 if (!ost) {
678 fprintf(stderr, "Could not alloc output stream\n");
679 ffmpeg_exit(1);
680 }
681 ost->file_index = file_idx;
682 ost->index = idx;
683 ost->st = st;
684 ost->enc = codec;
685 if (codec)
686 ost->opts = filter_codec_opts(codec_opts, codec->id, oc, st);
687
688 avcodec_get_context_defaults3(st->codec, codec);
689
690 ost->sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
691 return ost;
692 }
693
694 static int read_avserver_streams(AVFormatContext *s, const char *filename)
695 {
696 int i, err;
697 AVFormatContext *ic = NULL;
698
699 err = avformat_open_input(&ic, filename, NULL, NULL);
700 if (err < 0)
701 return err;
702 /* copy stream format */
703 for(i=0;i<ic->nb_streams;i++) {
704 AVStream *st;
705 OutputStream *ost;
706 AVCodec *codec;
707
708 codec = avcodec_find_encoder(ic->streams[i]->codec->codec_id);
709 ost = new_output_stream(s, nb_output_files, codec);
710 st = ost->st;
711
712 // FIXME: a more elegant solution is needed
713 memcpy(st, ic->streams[i], sizeof(AVStream));
714 st->info = NULL;
715 avcodec_copy_context(st->codec, ic->streams[i]->codec);
716
717 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
718 if (audio_stream_copy) {
719 st->stream_copy = 1;
720 } else
721 choose_sample_fmt(st, codec);
722 } else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
723 if (video_stream_copy) {
724 st->stream_copy = 1;
725 } else
726 choose_pixel_fmt(st, codec);
727 }
728 }
729
730 av_close_input_file(ic);
731 return 0;
732 }
733
734 static double
735 get_sync_ipts(const OutputStream *ost)
736 {
737 const InputStream *ist = ost->sync_ist;
738 return (double)(ist->pts - start_time)/AV_TIME_BASE;
739 }
740
741 static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc){
742 int ret;
743
744 while(bsfc){
745 AVPacket new_pkt= *pkt;
746 int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
747 &new_pkt.data, &new_pkt.size,
748 pkt->data, pkt->size,
749 pkt->flags & AV_PKT_FLAG_KEY);
750 if(a>0){
751 av_free_packet(pkt);
752 new_pkt.destruct= av_destruct_packet;
753 } else if(a<0){
754 fprintf(stderr, "%s failed for stream %d, codec %s",
755 bsfc->filter->name, pkt->stream_index,
756 avctx->codec ? avctx->codec->name : "copy");
757 print_error("", a);
758 if (exit_on_error)
759 ffmpeg_exit(1);
760 }
761 *pkt= new_pkt;
762
763 bsfc= bsfc->next;
764 }
765
766 ret= av_interleaved_write_frame(s, pkt);
767 if(ret < 0){
768 print_error("av_interleaved_write_frame()", ret);
769 ffmpeg_exit(1);
770 }
771 }
772
773 #define MAX_AUDIO_PACKET_SIZE (128 * 1024)
774
775 static void do_audio_out(AVFormatContext *s,
776 OutputStream *ost,
777 InputStream *ist,
778 unsigned char *buf, int size)
779 {
780 uint8_t *buftmp;
781 int64_t audio_out_size, audio_buf_size;
782 int64_t allocated_for_size= size;
783
784 int size_out, frame_bytes, ret, resample_changed;
785 AVCodecContext *enc= ost->st->codec;
786 AVCodecContext *dec= ist->st->codec;
787 int osize = av_get_bytes_per_sample(enc->sample_fmt);
788 int isize = av_get_bytes_per_sample(dec->sample_fmt);
789 const int coded_bps = av_get_bits_per_sample(enc->codec->id);
790
791 need_realloc:
792 audio_buf_size= (allocated_for_size + isize*dec->channels - 1) / (isize*dec->channels);
793 audio_buf_size= (audio_buf_size*enc->sample_rate + dec->sample_rate) / dec->sample_rate;
794 audio_buf_size= audio_buf_size*2 + 10000; //safety factors for the deprecated resampling API
795 audio_buf_size= FFMAX(audio_buf_size, enc->frame_size);
796 audio_buf_size*= osize*enc->channels;
797
798 audio_out_size= FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
799 if(coded_bps > 8*osize)
800 audio_out_size= audio_out_size * coded_bps / (8*osize);
801 audio_out_size += FF_MIN_BUFFER_SIZE;
802
803 if(audio_out_size > INT_MAX || audio_buf_size > INT_MAX){
804 fprintf(stderr, "Buffer sizes too large\n");
805 ffmpeg_exit(1);
806 }
807
808 av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
809 av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
810 if (!audio_buf || !audio_out){
811 fprintf(stderr, "Out of memory in do_audio_out\n");
812 ffmpeg_exit(1);
813 }
814
815 if (enc->channels != dec->channels || enc->sample_rate != dec->sample_rate)
816 ost->audio_resample = 1;
817
818 resample_changed = ost->resample_sample_fmt != dec->sample_fmt ||
819 ost->resample_channels != dec->channels ||
820 ost->resample_sample_rate != dec->sample_rate;
821
822 if ((ost->audio_resample && !ost->resample) || resample_changed) {
823 if (resample_changed) {
824 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",
825 ist->file_index, ist->st->index,
826 ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
827 dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
828 ost->resample_sample_fmt = dec->sample_fmt;
829 ost->resample_channels = dec->channels;
830 ost->resample_sample_rate = dec->sample_rate;
831 if (ost->resample)
832 audio_resample_close(ost->resample);
833 }
834 /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
835 if (audio_sync_method <= 1 &&
836 ost->resample_sample_fmt == enc->sample_fmt &&
837 ost->resample_channels == enc->channels &&
838 ost->resample_sample_rate == enc->sample_rate) {
839 ost->resample = NULL;
840 ost->audio_resample = 0;
841 } else if (ost->audio_resample) {
842 if (dec->sample_fmt != AV_SAMPLE_FMT_S16)
843 fprintf(stderr, "Warning, using s16 intermediate sample format for resampling\n");
844 ost->resample = av_audio_resample_init(enc->channels, dec->channels,
845 enc->sample_rate, dec->sample_rate,
846 enc->sample_fmt, dec->sample_fmt,
847 16, 10, 0, 0.8);
848 if (!ost->resample) {
849 fprintf(stderr, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
850 dec->channels, dec->sample_rate,
851 enc->channels, enc->sample_rate);
852 ffmpeg_exit(1);
853 }
854 }
855 }
856
857 #define MAKE_SFMT_PAIR(a,b) ((a)+AV_SAMPLE_FMT_NB*(b))
858 if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt &&
859 MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt)!=ost->reformat_pair) {
860 if (ost->reformat_ctx)
861 av_audio_convert_free(ost->reformat_ctx);
862 ost->reformat_ctx = av_audio_convert_alloc(enc->sample_fmt, 1,
863 dec->sample_fmt, 1, NULL, 0);
864 if (!ost->reformat_ctx) {
865 fprintf(stderr, "Cannot convert %s sample format to %s sample format\n",
866 av_get_sample_fmt_name(dec->sample_fmt),
867 av_get_sample_fmt_name(enc->sample_fmt));
868 ffmpeg_exit(1);
869 }
870 ost->reformat_pair=MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt);
871 }
872
873 if(audio_sync_method){
874 double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
875 - av_fifo_size(ost->fifo)/(enc->channels * 2);
876 double idelta= delta*dec->sample_rate / enc->sample_rate;
877 int byte_delta= ((int)idelta)*2*dec->channels;
878
879 //FIXME resample delay
880 if(fabs(delta) > 50){
881 if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
882 if(byte_delta < 0){
883 byte_delta= FFMAX(byte_delta, -size);
884 size += byte_delta;
885 buf -= byte_delta;
886 if(verbose > 2)
887 fprintf(stderr, "discarding %d audio samples\n", (int)-delta);
888 if(!size)
889 return;
890 ist->is_start=0;
891 }else{
892 static uint8_t *input_tmp= NULL;
893 input_tmp= av_realloc(input_tmp, byte_delta + size);
894
895 if(byte_delta > allocated_for_size - size){
896 allocated_for_size= byte_delta + (int64_t)size;
897 goto need_realloc;
898 }
899 ist->is_start=0;
900
901 memset(input_tmp, 0, byte_delta);
902 memcpy(input_tmp + byte_delta, buf, size);
903 buf= input_tmp;
904 size += byte_delta;
905 if(verbose > 2)
906 fprintf(stderr, "adding %d audio samples of silence\n", (int)delta);
907 }
908 }else if(audio_sync_method>1){
909 int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
910 av_assert0(ost->audio_resample);
911 if(verbose > 2)
912 fprintf(stderr, "compensating audio timestamp drift:%f compensation:%d in:%d\n", delta, comp, enc->sample_rate);
913 // 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));
914 av_resample_compensate(*(struct AVResampleContext**)ost->resample, comp, enc->sample_rate);
915 }
916 }
917 }else
918 ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
919 - av_fifo_size(ost->fifo)/(enc->channels * 2); //FIXME wrong
920
921 if (ost->audio_resample) {
922 buftmp = audio_buf;
923 size_out = audio_resample(ost->resample,
924 (short *)buftmp, (short *)buf,
925 size / (dec->channels * isize));
926 size_out = size_out * enc->channels * osize;
927 } else {
928 buftmp = buf;
929 size_out = size;
930 }
931
932 if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt) {
933 const void *ibuf[6]= {buftmp};
934 void *obuf[6]= {audio_buf};
935 int istride[6]= {isize};
936 int ostride[6]= {osize};
937 int len= size_out/istride[0];
938 if (av_audio_convert(ost->reformat_ctx, obuf, ostride, ibuf, istride, len)<0) {
939 printf("av_audio_convert() failed\n");
940 if (exit_on_error)
941 ffmpeg_exit(1);
942 return;
943 }
944 buftmp = audio_buf;
945 size_out = len*osize;
946 }
947
948 /* now encode as many frames as possible */
949 if (enc->frame_size > 1) {
950 /* output resampled raw samples */
951 if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
952 fprintf(stderr, "av_fifo_realloc2() failed\n");
953 ffmpeg_exit(1);
954 }
955 av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
956
957 frame_bytes = enc->frame_size * osize * enc->channels;
958
959 while (av_fifo_size(ost->fifo) >= frame_bytes) {
960 AVPacket pkt;
961 av_init_packet(&pkt);
962
963 av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
964
965 //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
966
967 ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
968 (short *)audio_buf);
969 if (ret < 0) {
970 fprintf(stderr, "Audio encoding failed\n");
971 ffmpeg_exit(1);
972 }
973 audio_size += ret;
974 pkt.stream_index= ost->index;
975 pkt.data= audio_out;
976 pkt.size= ret;
977 if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
978 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
979 pkt.flags |= AV_PKT_FLAG_KEY;
980 write_frame(s, &pkt, enc, ost->bitstream_filters);
981
982 ost->sync_opts += enc->frame_size;
983 }
984 } else {
985 AVPacket pkt;
986 av_init_packet(&pkt);
987
988 ost->sync_opts += size_out / (osize * enc->channels);
989
990 /* output a pcm frame */
991 /* determine the size of the coded buffer */
992 size_out /= osize;
993 if (coded_bps)
994 size_out = size_out*coded_bps/8;
995
996 if(size_out > audio_out_size){
997 fprintf(stderr, "Internal error, buffer size too small\n");
998 ffmpeg_exit(1);
999 }
1000
1001 //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
1002 ret = avcodec_encode_audio(enc, audio_out, size_out,
1003 (short *)buftmp);
1004 if (ret < 0) {
1005 fprintf(stderr, "Audio encoding failed\n");
1006 ffmpeg_exit(1);
1007 }
1008 audio_size += ret;
1009 pkt.stream_index= ost->index;
1010 pkt.data= audio_out;
1011 pkt.size= ret;
1012 if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1013 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1014 pkt.flags |= AV_PKT_FLAG_KEY;
1015 write_frame(s, &pkt, enc, ost->bitstream_filters);
1016 }
1017 }
1018
1019 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
1020 {
1021 AVCodecContext *dec;
1022 AVPicture *picture2;
1023 AVPicture picture_tmp;
1024 uint8_t *buf = 0;
1025
1026 dec = ist->st->codec;
1027
1028 /* deinterlace : must be done before any resize */
1029 if (do_deinterlace) {
1030 int size;
1031
1032 /* create temporary picture */
1033 size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1034 buf = av_malloc(size);
1035 if (!buf)
1036 return;
1037
1038 picture2 = &picture_tmp;
1039 avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1040
1041 if(avpicture_deinterlace(picture2, picture,
1042 dec->pix_fmt, dec->width, dec->height) < 0) {
1043 /* if error, do not deinterlace */
1044 fprintf(stderr, "Deinterlacing failed\n");
1045 av_free(buf);
1046 buf = NULL;
1047 picture2 = picture;
1048 }
1049 } else {
1050 picture2 = picture;
1051 }
1052
1053 if (picture != picture2)
1054 *picture = *picture2;
1055 *bufp = buf;
1056 }
1057
1058 /* we begin to correct av delay at this threshold */
1059 #define AV_DELAY_MAX 0.100
1060
1061 static void do_subtitle_out(AVFormatContext *s,
1062 OutputStream *ost,
1063 InputStream *ist,
1064 AVSubtitle *sub,
1065 int64_t pts)
1066 {
1067 static uint8_t *subtitle_out = NULL;
1068 int subtitle_out_max_size = 1024 * 1024;
1069 int subtitle_out_size, nb, i;
1070 AVCodecContext *enc;
1071 AVPacket pkt;
1072
1073 if (pts == AV_NOPTS_VALUE) {
1074 fprintf(stderr, "Subtitle packets must have a pts\n");
1075 if (exit_on_error)
1076 ffmpeg_exit(1);
1077 return;
1078 }
1079
1080 enc = ost->st->codec;
1081
1082 if (!subtitle_out) {
1083 subtitle_out = av_malloc(subtitle_out_max_size);
1084 }
1085
1086 /* Note: DVB subtitle need one packet to draw them and one other
1087 packet to clear them */
1088 /* XXX: signal it in the codec context ? */
1089 if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1090 nb = 2;
1091 else
1092 nb = 1;
1093
1094 for(i = 0; i < nb; i++) {
1095 sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1096 // start_display_time is required to be 0
1097 sub->pts += av_rescale_q(sub->start_display_time, (AVRational){1, 1000}, AV_TIME_BASE_Q);
1098 sub->end_display_time -= sub->start_display_time;
1099 sub->start_display_time = 0;
1100 subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1101 subtitle_out_max_size, sub);
1102 if (subtitle_out_size < 0) {
1103 fprintf(stderr, "Subtitle encoding failed\n");
1104 ffmpeg_exit(1);
1105 }
1106
1107 av_init_packet(&pkt);
1108 pkt.stream_index = ost->index;
1109 pkt.data = subtitle_out;
1110 pkt.size = subtitle_out_size;
1111 pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1112 if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1113 /* XXX: the pts correction is handled here. Maybe handling
1114 it in the codec would be better */
1115 if (i == 0)
1116 pkt.pts += 90 * sub->start_display_time;
1117 else
1118 pkt.pts += 90 * sub->end_display_time;
1119 }
1120 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1121 }
1122 }
1123
1124 static int bit_buffer_size= 1024*256;
1125 static uint8_t *bit_buffer= NULL;
1126
1127 static void do_video_out(AVFormatContext *s,
1128 OutputStream *ost,
1129 InputStream *ist,
1130 AVFrame *in_picture,
1131 int *frame_size, float quality)
1132 {
1133 int nb_frames, i, ret, resample_changed;
1134 AVFrame *final_picture, *formatted_picture;
1135 AVCodecContext *enc, *dec;
1136 double sync_ipts;
1137
1138 enc = ost->st->codec;
1139 dec = ist->st->codec;
1140
1141 sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1142
1143 /* by default, we output a single frame */
1144 nb_frames = 1;
1145
1146 *frame_size = 0;
1147
1148 if(video_sync_method){
1149 double vdelta = sync_ipts - ost->sync_opts;
1150 //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1151 if (vdelta < -1.1)
1152 nb_frames = 0;
1153 else if (video_sync_method == 2 || (video_sync_method<0 && (s->oformat->flags & AVFMT_VARIABLE_FPS))){
1154 if(vdelta<=-0.6){
1155 nb_frames=0;
1156 }else if(vdelta>0.6)
1157 ost->sync_opts= lrintf(sync_ipts);
1158 }else if (vdelta > 1.1)
1159 nb_frames = lrintf(vdelta);
1160 //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);
1161 if (nb_frames == 0){
1162 ++nb_frames_drop;
1163 if (verbose>2)
1164 fprintf(stderr, "*** drop!\n");
1165 }else if (nb_frames > 1) {
1166 nb_frames_dup += nb_frames - 1;
1167 if (verbose>2)
1168 fprintf(stderr, "*** %d dup!\n", nb_frames-1);
1169 }
1170 }else
1171 ost->sync_opts= lrintf(sync_ipts);
1172
1173 nb_frames= FFMIN(nb_frames, max_frames[AVMEDIA_TYPE_VIDEO] - ost->frame_number);
1174 if (nb_frames <= 0)
1175 return;
1176
1177 formatted_picture = in_picture;
1178 final_picture = formatted_picture;
1179
1180 resample_changed = ost->resample_width != dec->width ||
1181 ost->resample_height != dec->height ||
1182 ost->resample_pix_fmt != dec->pix_fmt;
1183
1184 if (resample_changed) {
1185 av_log(NULL, AV_LOG_INFO,
1186 "Input stream #%d.%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1187 ist->file_index, ist->st->index,
1188 ost->resample_width, ost->resample_height, av_get_pix_fmt_name(ost->resample_pix_fmt),
1189 dec->width , dec->height , av_get_pix_fmt_name(dec->pix_fmt));
1190 if(!ost->video_resample)
1191 ffmpeg_exit(1);
1192 }
1193
1194 #if !CONFIG_AVFILTER
1195 if (ost->video_resample) {
1196 final_picture = &ost->pict_tmp;
1197 if (resample_changed) {
1198 /* initialize a new scaler context */
1199 sws_freeContext(ost->img_resample_ctx);
1200 ost->img_resample_ctx = sws_getContext(
1201 ist->st->codec->width,
1202 ist->st->codec->height,
1203 ist->st->codec->pix_fmt,
1204 ost->st->codec->width,
1205 ost->st->codec->height,
1206 ost->st->codec->pix_fmt,
1207 ost->sws_flags, NULL, NULL, NULL);
1208 if (ost->img_resample_ctx == NULL) {
1209 fprintf(stderr, "Cannot get resampling context\n");
1210 ffmpeg_exit(1);
1211 }
1212 }
1213 sws_scale(ost->img_resample_ctx, formatted_picture->data, formatted_picture->linesize,
1214 0, ost->resample_height, final_picture->data, final_picture->linesize);
1215 }
1216 #endif
1217
1218 /* duplicates frame if needed */
1219 for(i=0;i<nb_frames;i++) {
1220 AVPacket pkt;
1221 av_init_packet(&pkt);
1222 pkt.stream_index= ost->index;
1223
1224 if (s->oformat->flags & AVFMT_RAWPICTURE) {
1225 /* raw pictures are written as AVPicture structure to
1226 avoid any copies. We support temorarily the older
1227 method. */
1228 AVFrame* old_frame = enc->coded_frame;
1229 enc->coded_frame = dec->coded_frame; //FIXME/XXX remove this hack
1230 pkt.data= (uint8_t *)final_picture;
1231 pkt.size= sizeof(AVPicture);
1232 pkt.pts= av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1233 pkt.flags |= AV_PKT_FLAG_KEY;
1234
1235 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1236 enc->coded_frame = old_frame;
1237 } else {
1238 AVFrame big_picture;
1239
1240 big_picture= *final_picture;
1241 /* better than nothing: use input picture interlaced
1242 settings */
1243 big_picture.interlaced_frame = in_picture->interlaced_frame;
1244 if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1245 if(top_field_first == -1)
1246 big_picture.top_field_first = in_picture->top_field_first;
1247 else
1248 big_picture.top_field_first = top_field_first;
1249 }
1250
1251 /* handles sameq here. This is not correct because it may
1252 not be a global option */
1253 big_picture.quality = quality;
1254 if(!me_threshold)
1255 big_picture.pict_type = 0;
1256 // big_picture.pts = AV_NOPTS_VALUE;
1257 big_picture.pts= ost->sync_opts;
1258 // big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1259 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1260 if (ost->forced_kf_index < ost->forced_kf_count &&
1261 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1262 big_picture.pict_type = AV_PICTURE_TYPE_I;
1263 ost->forced_kf_index++;
1264 }
1265 ret = avcodec_encode_video(enc,
1266 bit_buffer, bit_buffer_size,
1267 &big_picture);
1268 if (ret < 0) {
1269 fprintf(stderr, "Video encoding failed\n");
1270 ffmpeg_exit(1);
1271 }
1272
1273 if(ret>0){
1274 pkt.data= bit_buffer;
1275 pkt.size= ret;
1276 if(enc->coded_frame->pts != AV_NOPTS_VALUE)
1277 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1278 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1279 pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1280 pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1281
1282 if(enc->coded_frame->key_frame)
1283 pkt.flags |= AV_PKT_FLAG_KEY;
1284 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1285 *frame_size = ret;
1286 video_size += ret;
1287 //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1288 // enc->frame_number-1, ret, enc->pict_type);
1289 /* if two pass, output log */
1290 if (ost->logfile && enc->stats_out) {
1291 fprintf(ost->logfile, "%s", enc->stats_out);
1292 }
1293 }
1294 }
1295 ost->sync_opts++;
1296 ost->frame_number++;
1297 }
1298 }
1299
1300 static double psnr(double d){
1301 return -10.0*log(d)/log(10.0);
1302 }
1303
1304 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1305 int frame_size)
1306 {
1307 AVCodecContext *enc;
1308 int frame_number;
1309 double ti1, bitrate, avg_bitrate;
1310
1311 /* this is executed just the first time do_video_stats is called */
1312 if (!vstats_file) {
1313 vstats_file = fopen(vstats_filename, "w");
1314 if (!vstats_file) {
1315 perror("fopen");
1316 ffmpeg_exit(1);
1317 }
1318 }
1319
1320 enc = ost->st->codec;
1321 if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1322 frame_number = ost->frame_number;
1323 fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1324 if (enc->flags&CODEC_FLAG_PSNR)
1325 fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
1326
1327 fprintf(vstats_file,"f_size= %6d ", frame_size);
1328 /* compute pts value */
1329 ti1 = ost->sync_opts * av_q2d(enc->time_base);
1330 if (ti1 < 0.01)
1331 ti1 = 0.01;
1332
1333 bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1334 avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1335 fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1336 (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1337 fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1338 }
1339 }
1340
1341 static void print_report(AVFormatContext **output_files,
1342 OutputStream **ost_table, int nb_ostreams,
1343 int is_last_report)
1344 {
1345 char buf[1024];
1346 OutputStream *ost;
1347 AVFormatContext *oc;
1348 int64_t total_size;
1349 AVCodecContext *enc;
1350 int frame_number, vid, i;
1351 double bitrate, ti1, pts;
1352 static int64_t last_time = -1;
1353 static int qp_histogram[52];
1354
1355 if (!is_last_report) {
1356 int64_t cur_time;
1357 /* display the report every 0.5 seconds */
1358 cur_time = av_gettime();
1359 if (last_time == -1) {
1360 last_time = cur_time;
1361 return;
1362 }
1363 if ((cur_time - last_time) < 500000)
1364 return;
1365 last_time = cur_time;
1366 }
1367
1368
1369 oc = output_files[0];
1370
1371 total_size = avio_size(oc->pb);
1372 if(total_size<0) // FIXME improve avio_size() so it works with non seekable output too
1373 total_size= avio_tell(oc->pb);
1374
1375 buf[0] = '\0';
1376 ti1 = 1e10;
1377 vid = 0;
1378 for(i=0;i<nb_ostreams;i++) {
1379 float q = -1;
1380 ost = ost_table[i];
1381 enc = ost->st->codec;
1382 if (!ost->st->stream_copy && enc->coded_frame)
1383 q = enc->coded_frame->quality/(float)FF_QP2LAMBDA;
1384 if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1385 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1386 }
1387 if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1388 float t = (av_gettime()-timer_start) / 1000000.0;
1389
1390 frame_number = ost->frame_number;
1391 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1392 frame_number, (t>1)?(int)(frame_number/t+0.5) : 0, q);
1393 if(is_last_report)
1394 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1395 if(qp_hist){
1396 int j;
1397 int qp = lrintf(q);
1398 if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
1399 qp_histogram[qp]++;
1400 for(j=0; j<32; j++)
1401 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
1402 }
1403 if (enc->flags&CODEC_FLAG_PSNR){
1404 int j;
1405 double error, error_sum=0;
1406 double scale, scale_sum=0;
1407 char type[3]= {'Y','U','V'};
1408 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1409 for(j=0; j<3; j++){
1410 if(is_last_report){
1411 error= enc->error[j];
1412 scale= enc->width*enc->height*255.0*255.0*frame_number;
1413 }else{
1414 error= enc->coded_frame->error[j];
1415 scale= enc->width*enc->height*255.0*255.0;
1416 }
1417 if(j) scale/=4;
1418 error_sum += error;
1419 scale_sum += scale;
1420 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
1421 }
1422 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
1423 }
1424 vid = 1;
1425 }
1426 /* compute min output value */
1427 pts = (double)ost->st->pts.val * av_q2d(ost->st->time_base);
1428 if ((pts < ti1) && (pts > 0))
1429 ti1 = pts;
1430 }
1431 if (ti1 < 0.01)
1432 ti1 = 0.01;
1433
1434 if (verbose > 0 || is_last_report) {
1435 bitrate = (double)(total_size * 8) / ti1 / 1000.0;
1436
1437 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1438 "size=%8.0fkB time=%0.2f bitrate=%6.1fkbits/s",
1439 (double)total_size / 1024, ti1, bitrate);
1440
1441 if (nb_frames_dup || nb_frames_drop)
1442 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1443 nb_frames_dup, nb_frames_drop);
1444
1445 if (verbose >= 0)
1446 fprintf(stderr, "%s \r", buf);
1447
1448 fflush(stderr);
1449 }
1450
1451 if (is_last_report && verbose >= 0){
1452 int64_t raw= audio_size + video_size + extra_size;
1453 fprintf(stderr, "\n");
1454 fprintf(stderr, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1455 video_size/1024.0,
1456 audio_size/1024.0,
1457 extra_size/1024.0,
1458 100.0*(total_size - raw)/raw
1459 );
1460 }
1461 }
1462
1463 static void generate_silence(uint8_t* buf, enum AVSampleFormat sample_fmt, size_t size)
1464 {
1465 int fill_char = 0x00;
1466 if (sample_fmt == AV_SAMPLE_FMT_U8)
1467 fill_char = 0x80;
1468 memset(buf, fill_char, size);
1469 }
1470
1471 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1472 static int output_packet(InputStream *ist, int ist_index,
1473 OutputStream **ost_table, int nb_ostreams,
1474 const AVPacket *pkt)
1475 {
1476 AVFormatContext *os;
1477 OutputStream *ost;
1478 int ret, i;
1479 int got_output;
1480 AVFrame picture;
1481 void *buffer_to_free = NULL;
1482 static unsigned int samples_size= 0;
1483 AVSubtitle subtitle, *subtitle_to_free;
1484 int64_t pkt_pts = AV_NOPTS_VALUE;
1485 #if CONFIG_AVFILTER
1486 int frame_available;
1487 #endif
1488 float quality;
1489
1490 AVPacket avpkt;
1491 int bps = av_get_bytes_per_sample(ist->st->codec->sample_fmt);
1492
1493 if(ist->next_pts == AV_NOPTS_VALUE)
1494 ist->next_pts= ist->pts;
1495
1496 if (pkt == NULL) {
1497 /* EOF handling */
1498 av_init_packet(&avpkt);
1499 avpkt.data = NULL;
1500 avpkt.size = 0;
1501 goto handle_eof;
1502 } else {
1503 avpkt = *pkt;
1504 }
1505
1506 if(pkt->dts != AV_NOPTS_VALUE)
1507 ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1508 if(pkt->pts != AV_NOPTS_VALUE)
1509 pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1510
1511 //while we have more to decode or while the decoder did output something on EOF
1512 while (avpkt.size > 0 || (!pkt && got_output)) {
1513 uint8_t *data_buf, *decoded_data_buf;
1514 int data_size, decoded_data_size;
1515 handle_eof:
1516 ist->pts= ist->next_pts;
1517
1518 if(avpkt.size && avpkt.size != pkt->size &&
1519 ((!ist->showed_multi_packet_warning && verbose>0) || verbose>1)){
1520 fprintf(stderr, "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1521 ist->showed_multi_packet_warning=1;
1522 }
1523
1524 /* decode the packet if needed */
1525 decoded_data_buf = NULL; /* fail safe */
1526 decoded_data_size= 0;
1527 data_buf = avpkt.data;
1528 data_size = avpkt.size;
1529 subtitle_to_free = NULL;
1530 if (ist->decoding_needed) {
1531 switch(ist->st->codec->codec_type) {
1532 case AVMEDIA_TYPE_AUDIO:{
1533 if(pkt && samples_size < FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE)) {
1534 samples_size = FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE);
1535 av_free(samples);
1536 samples= av_malloc(samples_size);
1537 }
1538 decoded_data_size= samples_size;
1539 /* XXX: could avoid copy if PCM 16 bits with same
1540 endianness as CPU */
1541 ret = avcodec_decode_audio3(ist->st->codec, samples, &decoded_data_size,
1542 &avpkt);
1543 if (ret < 0)
1544 return ret;
1545 avpkt.data += ret;
1546 avpkt.size -= ret;
1547 data_size = ret;
1548 got_output = decoded_data_size > 0;
1549 /* Some bug in mpeg audio decoder gives */
1550 /* decoded_data_size < 0, it seems they are overflows */
1551 if (!got_output) {
1552 /* no audio frame */
1553 continue;
1554 }
1555 decoded_data_buf = (uint8_t *)samples;
1556 ist->next_pts += ((int64_t)AV_TIME_BASE/bps * decoded_data_size) /
1557 (ist->st->codec->sample_rate * ist->st->codec->channels);
1558 break;}
1559 case AVMEDIA_TYPE_VIDEO:
1560 decoded_data_size = (ist->st->codec->width * ist->st->codec->height * 3) / 2;
1561 /* XXX: allocate picture correctly */
1562 avcodec_get_frame_defaults(&picture);
1563 avpkt.pts = pkt_pts;
1564 avpkt.dts = ist->pts;
1565 pkt_pts = AV_NOPTS_VALUE;
1566
1567 ret = avcodec_decode_video2(ist->st->codec,
1568 &picture, &got_output, &avpkt);
1569 quality = same_quality ? picture.quality : 0;
1570 if (ret < 0)
1571 return ret;
1572 if (!got_output) {
1573 /* no picture yet */
1574 goto discard_packet;
1575 }
1576 ist->next_pts = ist->pts = guess_correct_pts(&ist->pts_ctx, picture.pkt_pts, picture.pkt_dts);
1577 if (ist->st->codec->time_base.num != 0) {
1578 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1579 ist->next_pts += ((int64_t)AV_TIME_BASE *
1580 ist->st->codec->time_base.num * ticks) /
1581 ist->st->codec->time_base.den;
1582 }
1583 avpkt.size = 0;
1584 buffer_to_free = NULL;
1585 pre_process_video_frame(ist, (AVPicture *)&picture, &buffer_to_free);
1586 break;
1587 case AVMEDIA_TYPE_SUBTITLE:
1588 ret = avcodec_decode_subtitle2(ist->st->codec,
1589 &subtitle, &got_output, &avpkt);
1590 if (ret < 0)
1591 return ret;
1592 if (!got_output) {
1593 goto discard_packet;
1594 }
1595 subtitle_to_free = &subtitle;
1596 avpkt.size = 0;
1597 break;
1598 default:
1599 return -1;
1600 }
1601 } else {
1602 switch(ist->st->codec->codec_type) {
1603 case AVMEDIA_TYPE_AUDIO:
1604 ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1605 ist->st->codec->sample_rate;
1606 break;
1607 case AVMEDIA_TYPE_VIDEO:
1608 if (ist->st->codec->time_base.num != 0) {
1609 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1610 ist->next_pts += ((int64_t)AV_TIME_BASE *
1611 ist->st->codec->time_base.num * ticks) /
1612 ist->st->codec->time_base.den;
1613 }
1614 break;
1615 }
1616 ret = avpkt.size;
1617 avpkt.size = 0;
1618 }
1619
1620 #if CONFIG_AVFILTER
1621 if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1622 for (i = 0; i < nb_ostreams; i++) {
1623 ost = ost_table[i];
1624 if (ost->input_video_filter && ost->source_index == ist_index) {
1625 AVRational sar;
1626 if (ist->st->sample_aspect_ratio.num)
1627 sar = ist->st->sample_aspect_ratio;
1628 else
1629 sar = ist->st->codec->sample_aspect_ratio;
1630 // add it to be filtered
1631 av_vsrc_buffer_add_frame(ost->input_video_filter, &picture,
1632 ist->pts,
1633 sar);
1634 }
1635 }
1636 }
1637 #endif
1638
1639 // preprocess audio (volume)
1640 if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1641 if (audio_volume != 256) {
1642 short *volp;
1643 volp = samples;
1644 for(i=0;i<(decoded_data_size / sizeof(short));i++) {
1645 int v = ((*volp) * audio_volume + 128) >> 8;
1646 if (v < -32768) v = -32768;
1647 if (v > 32767) v = 32767;
1648 *volp++ = v;
1649 }
1650 }
1651 }
1652
1653 /* frame rate emulation */
1654 if (rate_emu) {
1655 int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1656 int64_t now = av_gettime() - ist->start;
1657 if (pts > now)
1658 usleep(pts - now);
1659 }
1660 /* if output time reached then transcode raw format,
1661 encode packets and output them */
1662 if (start_time == 0 || ist->pts >= start_time)
1663 for(i=0;i<nb_ostreams;i++) {
1664 int frame_size;
1665
1666 ost = ost_table[i];
1667 if (ost->source_index == ist_index) {
1668 #if CONFIG_AVFILTER
1669 frame_available = ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO ||
1670 !ost->output_video_filter || avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1671 while (frame_available) {
1672 AVRational ist_pts_tb;
1673 if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ost->output_video_filter)
1674 get_filtered_video_frame(ost->output_video_filter, &picture, &ost->picref, &ist_pts_tb);
1675 if (ost->picref)
1676 ist->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1677 #endif
1678 os = output_files[ost->file_index];
1679
1680 /* set the input output pts pairs */
1681 //ost->sync_ipts = (double)(ist->pts + input_files[ist->file_index].ts_offset - start_time)/ AV_TIME_BASE;
1682
1683 if (ost->encoding_needed) {
1684 av_assert0(ist->decoding_needed);
1685 switch(ost->st->codec->codec_type) {
1686 case AVMEDIA_TYPE_AUDIO:
1687 do_audio_out(os, ost, ist, decoded_data_buf, decoded_data_size);
1688 break;
1689 case AVMEDIA_TYPE_VIDEO:
1690 #if CONFIG_AVFILTER
1691 if (ost->picref->video && !ost->frame_aspect_ratio)
1692 ost->st->codec->sample_aspect_ratio = ost->picref->video->pixel_aspect;
1693 #endif
1694 do_video_out(os, ost, ist, &picture, &frame_size,
1695 same_quality ? quality : ost->st->codec->global_quality);
1696 if (vstats_filename && frame_size)
1697 do_video_stats(os, ost, frame_size);
1698 break;
1699 case AVMEDIA_TYPE_SUBTITLE:
1700 do_subtitle_out(os, ost, ist, &subtitle,
1701 pkt->pts);
1702 break;
1703 default:
1704 abort();
1705 }
1706 } else {
1707 AVFrame avframe; //FIXME/XXX remove this
1708 AVPacket opkt;
1709 int64_t ost_tb_start_time= av_rescale_q(start_time, AV_TIME_BASE_Q, ost->st->time_base);
1710
1711 av_init_packet(&opkt);
1712
1713 if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) && !copy_initial_nonkeyframes)
1714 #if !CONFIG_AVFILTER
1715 continue;
1716 #else
1717 goto cont;
1718 #endif
1719
1720 /* no reencoding needed : output the packet directly */
1721 /* force the input stream PTS */
1722
1723 avcodec_get_frame_defaults(&avframe);
1724 ost->st->codec->coded_frame= &avframe;
1725 avframe.key_frame = pkt->flags & AV_PKT_FLAG_KEY;
1726
1727 if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1728 audio_size += data_size;
1729 else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1730 video_size += data_size;
1731 ost->sync_opts++;
1732 }
1733
1734 opkt.stream_index= ost->index;
1735 if(pkt->pts != AV_NOPTS_VALUE)
1736 opkt.pts= av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1737 else
1738 opkt.pts= AV_NOPTS_VALUE;
1739
1740 if (pkt->dts == AV_NOPTS_VALUE)
1741 opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1742 else
1743 opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1744 opkt.dts -= ost_tb_start_time;
1745
1746 opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1747 opkt.flags= pkt->flags;
1748
1749 //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1750 if( ost->st->codec->codec_id != CODEC_ID_H264
1751 && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1752 && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1753 ) {
1754 if(av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, data_buf, data_size, pkt->flags & AV_PKT_FLAG_KEY))
1755 opkt.destruct= av_destruct_packet;
1756 } else {
1757 opkt.data = data_buf;
1758 opkt.size = data_size;
1759 }
1760
1761 write_frame(os, &opkt, ost->st->codec, ost->bitstream_filters);
1762 ost->st->codec->frame_number++;
1763 ost->frame_number++;
1764 av_free_packet(&opkt);
1765 }
1766 #if CONFIG_AVFILTER
1767 cont:
1768 frame_available = (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) &&
1769 ost->output_video_filter && avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1770 if (ost->picref)
1771 avfilter_unref_buffer(ost->picref);
1772 }
1773 #endif
1774 }
1775 }
1776
1777 av_free(buffer_to_free);
1778 /* XXX: allocate the subtitles in the codec ? */
1779 if (subtitle_to_free) {
1780 avsubtitle_free(subtitle_to_free);
1781 subtitle_to_free = NULL;
1782 }
1783 }
1784 discard_packet:
1785 if (pkt == NULL) {
1786 /* EOF handling */
1787
1788 for(i=0;i<nb_ostreams;i++) {
1789 ost = ost_table[i];
1790 if (ost->source_index == ist_index) {
1791 AVCodecContext *enc= ost->st->codec;
1792 os = output_files[ost->file_index];
1793
1794 if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
1795 continue;
1796 if(ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE))
1797 continue;
1798
1799 if (ost->encoding_needed) {
1800 for(;;) {
1801 AVPacket pkt;
1802 int fifo_bytes;
1803 av_init_packet(&pkt);
1804 pkt.stream_index= ost->index;
1805
1806 switch(ost->st->codec->codec_type) {
1807 case AVMEDIA_TYPE_AUDIO:
1808 fifo_bytes = av_fifo_size(ost->fifo);
1809 ret = 0;
1810 /* encode any samples remaining in fifo */
1811 if (fifo_bytes > 0) {
1812 int osize = av_get_bytes_per_sample(enc->sample_fmt);
1813 int fs_tmp = enc->frame_size;
1814
1815 av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1816 if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1817 enc->frame_size = fifo_bytes / (osize * enc->channels);
1818 } else { /* pad */
1819 int frame_bytes = enc->frame_size*osize*enc->channels;
1820 if (allocated_audio_buf_size < frame_bytes)
1821 ffmpeg_exit(1);
1822 generate_silence(audio_buf+fifo_bytes, enc->sample_fmt, frame_bytes - fifo_bytes);
1823 }
1824
1825 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1826 pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1827 ost->st->time_base.num, enc->sample_rate);
1828 enc->frame_size = fs_tmp;
1829 }
1830 if(ret <= 0) {
1831 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1832 }
1833 if (ret < 0) {
1834 fprintf(stderr, "Audio encoding failed\n");
1835 ffmpeg_exit(1);
1836 }
1837 audio_size += ret;
1838 pkt.flags |= AV_PKT_FLAG_KEY;
1839 break;
1840 case AVMEDIA_TYPE_VIDEO:
1841 ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1842 if (ret < 0) {
1843 fprintf(stderr, "Video encoding failed\n");
1844 ffmpeg_exit(1);
1845 }
1846 video_size += ret;
1847 if(enc->coded_frame && enc->coded_frame->key_frame)
1848 pkt.flags |= AV_PKT_FLAG_KEY;
1849 if (ost->logfile && enc->stats_out) {
1850 fprintf(ost->logfile, "%s", enc->stats_out);
1851 }
1852 break;
1853 default:
1854 ret=-1;
1855 }
1856
1857 if(ret<=0)
1858 break;
1859 pkt.data= bit_buffer;
1860 pkt.size= ret;
1861 if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1862 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1863 write_frame(os, &pkt, ost->st->codec, ost->bitstream_filters);
1864 }
1865 }
1866 }
1867 }
1868 }
1869
1870 return 0;
1871 }
1872
1873 static void print_sdp(AVFormatContext **avc, int n)
1874 {
1875 char sdp[2048];
1876
1877 av_sdp_create(avc, n, sdp, sizeof(sdp));
1878 printf("SDP:\n%s\n", sdp);
1879 fflush(stdout);
1880 }
1881
1882 static int copy_chapters(int infile, int outfile)
1883 {
1884 AVFormatContext *is = input_files[infile].ctx;
1885 AVFormatContext *os = output_files[outfile];
1886 int i;
1887
1888 for (i = 0; i < is->nb_chapters; i++) {
1889 AVChapter *in_ch = is->chapters[i], *out_ch;
1890 int64_t ts_off = av_rescale_q(start_time - input_files[infile].ts_offset,
1891 AV_TIME_BASE_Q, in_ch->time_base);
1892 int64_t rt = (recording_time == INT64_MAX) ? INT64_MAX :
1893 av_rescale_q(recording_time, AV_TIME_BASE_Q, in_ch->time_base);
1894
1895
1896 if (in_ch->end < ts_off)
1897 continue;
1898 if (rt != INT64_MAX && in_ch->start > rt + ts_off)
1899 break;
1900
1901 out_ch = av_mallocz(sizeof(AVChapter));
1902 if (!out_ch)
1903 return AVERROR(ENOMEM);
1904
1905 out_ch->id = in_ch->id;
1906 out_ch->time_base = in_ch->time_base;
1907 out_ch->start = FFMAX(0, in_ch->start - ts_off);
1908 out_ch->end = FFMIN(rt, in_ch->end - ts_off);
1909
1910 if (metadata_chapters_autocopy)
1911 av_dict_copy(&out_ch->metadata, in_ch->metadata, 0);
1912
1913 os->nb_chapters++;
1914 os->chapters = av_realloc(os->chapters, sizeof(AVChapter)*os->nb_chapters);
1915 if (!os->chapters)
1916 return AVERROR(ENOMEM);
1917 os->chapters[os->nb_chapters - 1] = out_ch;
1918 }
1919 return 0;
1920 }
1921
1922 static void parse_forced_key_frames(char *kf, OutputStream *ost,
1923 AVCodecContext *avctx)
1924 {
1925 char *p;
1926 int n = 1, i;
1927 int64_t t;
1928
1929 for (p = kf; *p; p++)
1930 if (*p == ',')
1931 n++;
1932 ost->forced_kf_count = n;
1933 ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
1934 if (!ost->forced_kf_pts) {
1935 av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
1936 ffmpeg_exit(1);
1937 }
1938 for (i = 0; i < n; i++) {
1939 p = i ? strchr(p, ',') + 1 : kf;
1940 t = parse_time_or_die("force_key_frames", p, 1);
1941 ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
1942 }
1943 }
1944
1945 /*
1946 * The following code is the main loop of the file converter
1947 */
1948 static int transcode(AVFormatContext **output_files,
1949 int nb_output_files,
1950 InputFile *input_files,
1951 int nb_input_files,
1952 StreamMap *stream_maps, int nb_stream_maps)
1953 {
1954 int ret = 0, i, j, k, n, nb_ostreams = 0;
1955 AVFormatContext *is, *os;
1956 AVCodecContext *codec, *icodec;
1957 OutputStream *ost, **ost_table = NULL;
1958 InputStream *ist;
1959 char error[1024];
1960 int want_sdp = 1;
1961 uint8_t no_packet[MAX_FILES]={0};
1962 int no_packet_count=0;
1963
1964 if (rate_emu)
1965 for (i = 0; i < nb_input_streams; i++)
1966 input_streams[i].start = av_gettime();
1967
1968 /* output stream init */
1969 nb_ostreams = 0;
1970 for(i=0;i<nb_output_files;i++) {
1971 os = output_files[i];
1972 if (!os->nb_streams && !(os->oformat->flags & AVFMT_NOSTREAMS)) {
1973 av_dump_format(output_files[i], i, output_files[i]->filename, 1);
1974 fprintf(stderr, "Output file #%d does not contain any stream\n", i);
1975 ret = AVERROR(EINVAL);
1976 goto fail;
1977 }
1978 nb_ostreams += os->nb_streams;
1979 }
1980 if (nb_stream_maps > 0 && nb_stream_maps != nb_ostreams) {
1981 fprintf(stderr, "Number of stream maps must match number of output streams\n");
1982 ret = AVERROR(EINVAL);
1983 goto fail;
1984 }
1985
1986 /* Sanity check the mapping args -- do the input files & streams exist? */
1987 for(i=0;i<nb_stream_maps;i++) {
1988 int fi = stream_maps[i].file_index;
1989 int si = stream_maps[i].stream_index;
1990
1991 if (fi < 0 || fi > nb_input_files - 1 ||
1992 si < 0 || si > input_files[fi].ctx->nb_streams - 1) {
1993 fprintf(stderr,"Could not find input stream #%d.%d\n", fi, si);
1994 ret = AVERROR(EINVAL);
1995 goto fail;
1996 }
1997 fi = stream_maps[i].sync_file_index;
1998 si = stream_maps[i].sync_stream_index;
1999 if (fi < 0 || fi > nb_input_files - 1 ||
2000 si < 0 || si > input_files[fi].ctx->nb_streams - 1) {
2001 fprintf(stderr,"Could not find sync stream #%d.%d\n", fi, si);
2002 ret = AVERROR(EINVAL);
2003 goto fail;
2004 }
2005 }
2006
2007 ost_table = av_mallocz(sizeof(OutputStream *) * nb_ostreams);
2008 if (!ost_table)
2009 goto fail;
2010 n = 0;
2011 for(k=0;k<nb_output_files;k++) {
2012 os = output_files[k];
2013 for(i=0;i<os->nb_streams;i++,n++) {
2014 int found;
2015 ost = ost_table[n] = output_streams_for_file[k][i];
2016 if (nb_stream_maps > 0) {
2017 ost->source_index = input_files[stream_maps[n].file_index].ist_index +
2018 stream_maps[n].stream_index;
2019
2020 /* Sanity check that the stream types match */
2021 if (input_streams[ost->source_index].st->codec->codec_type != ost->st->codec->codec_type) {
2022 int i= ost->file_index;
2023 av_dump_format(output_files[i], i, output_files[i]->filename, 1);
2024 fprintf(stderr, "Codec type mismatch for mapping #%d.%d -> #%d.%d\n",
2025 stream_maps[n].file_index, stream_maps[n].stream_index,
2026 ost->file_index, ost->index);
2027 ffmpeg_exit(1);
2028 }
2029
2030 } else {
2031 int best_nb_frames=-1;
2032 /* get corresponding input stream index : we select the first one with the right type */
2033 found = 0;
2034 for (j = 0; j < nb_input_streams; j++) {
2035 int skip=0;
2036 ist = &input_streams[j];
2037 if(opt_programid){
2038 int pi,si;
2039 AVFormatContext *f = input_files[ist->file_index].ctx;
2040 skip=1;
2041 for(pi=0; pi<f->nb_programs; pi++){
2042 AVProgram *p= f->programs[pi];
2043 if(p->id == opt_programid)
2044 for(si=0; si<p->nb_stream_indexes; si++){
2045 if(f->streams[ p->stream_index[si] ] == ist->st)
2046 skip=0;
2047 }
2048 }
2049 }
2050 if (ist->discard && ist->st->discard != AVDISCARD_ALL && !skip &&
2051 ist->st->codec->codec_type == ost->st->codec->codec_type) {
2052 if(best_nb_frames < ist->st->codec_info_nb_frames){
2053 best_nb_frames= ist->st->codec_info_nb_frames;
2054 ost->source_index = j;
2055 found = 1;
2056 }
2057 }
2058 }
2059
2060 if (!found) {
2061 if(! opt_programid) {
2062 /* try again and reuse existing stream */
2063 for (j = 0; j < nb_input_streams; j++) {
2064 ist = &input_streams[j];
2065 if ( ist->st->codec->codec_type == ost->st->codec->codec_type
2066 && ist->st->discard != AVDISCARD_ALL) {
2067 ost->source_index = j;
2068 found = 1;
2069 }
2070 }
2071 }
2072 if (!found) {
2073 int i= ost->file_index;
2074 av_dump_format(output_files[i], i, output_files[i]->filename, 1);
2075 fprintf(stderr, "Could not find input stream matching output stream #%d.%d\n",
2076 ost->file_index, ost->index);
2077 ffmpeg_exit(1);
2078 }
2079 }
2080 }
2081 ist = &input_streams[ost->source_index];
2082 ist->discard = 0;
2083 ost->sync_ist = (nb_stream_maps > 0) ?
2084 &input_streams[input_files[stream_maps[n].sync_file_index].ist_index +
2085 stream_maps[n].sync_stream_index] : ist;
2086 }
2087 }
2088
2089 /* for each output stream, we compute the right encoding parameters */
2090 for(i=0;i<nb_ostreams;i++) {
2091 ost = ost_table[i];
2092 os = output_files[ost->file_index];
2093 ist = &input_streams[ost->source_index];
2094
2095 codec = ost->st->codec;
2096 icodec = ist->st->codec;
2097
2098 if (metadata_streams_autocopy)
2099 av_dict_copy(&ost->st->metadata, ist->st->metadata,
2100 AV_DICT_DONT_OVERWRITE);
2101
2102 ost->st->disposition = ist->st->disposition;
2103 codec->bits_per_raw_sample= icodec->bits_per_raw_sample;
2104 codec->chroma_sample_location = icodec->chroma_sample_location;
2105
2106 if (ost->st->stream_copy) {
2107 uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2108
2109 if (extra_size > INT_MAX)
2110 goto fail;
2111
2112 /* if stream_copy is selected, no need to decode or encode */
2113 codec->codec_id = icodec->codec_id;
2114 codec->codec_type = icodec->codec_type;
2115
2116 if(!codec->codec_tag){
2117 if( !os->oformat->codec_tag
2118 || av_codec_get_id (os->oformat->codec_tag, icodec->codec_tag) == codec->codec_id
2119 || av_codec_get_tag(os->oformat->codec_tag, icodec->codec_id) <= 0)
2120 codec->codec_tag = icodec->codec_tag;
2121 }
2122
2123 codec->bit_rate = icodec->bit_rate;
2124 codec->rc_max_rate = icodec->rc_max_rate;
2125 codec->rc_buffer_size = icodec->rc_buffer_size;
2126 codec->extradata= av_mallocz(extra_size);
2127 if (!codec->extradata)
2128 goto fail;
2129 memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2130 codec->extradata_size= icodec->extradata_size;
2131 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){
2132 codec->time_base = icodec->time_base;
2133 codec->time_base.num *= icodec->ticks_per_frame;
2134 av_reduce(&codec->time_base.num, &codec->time_base.den,
2135 codec->time_base.num, codec->time_base.den, INT_MAX);
2136 }else
2137 codec->time_base = ist->st->time_base;
2138 switch(codec->codec_type) {
2139 case AVMEDIA_TYPE_AUDIO:
2140 if(audio_volume != 256) {
2141 fprintf(stderr,"-acodec copy and -vol are incompatible (frames are not decoded)\n");
2142 ffmpeg_exit(1);
2143 }
2144 codec->channel_layout = icodec->channel_layout;
2145 codec->sample_rate = icodec->sample_rate;
2146 codec->channels = icodec->channels;
2147 codec->frame_size = icodec->frame_size;
2148 codec->audio_service_type = icodec->audio_service_type;
2149 codec->block_align= icodec->block_align;
2150 if(codec->block_align == 1 && codec->codec_id == CODEC_ID_MP3)
2151 codec->block_align= 0;
2152 if(codec->codec_id == CODEC_ID_AC3)
2153 codec->block_align= 0;
2154 break;
2155 case AVMEDIA_TYPE_VIDEO:
2156 codec->pix_fmt = icodec->pix_fmt;
2157 codec->width = icodec->width;
2158 codec->height = icodec->height;
2159 codec->has_b_frames = icodec->has_b_frames;
2160 if (!codec->sample_aspect_ratio.num) {
2161 codec->sample_aspect_ratio =
2162 ost->st->sample_aspect_ratio =
2163 ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2164 ist->st->codec->sample_aspect_ratio.num ?
2165 ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2166 }
2167 break;
2168 case AVMEDIA_TYPE_SUBTITLE:
2169 codec->width = icodec->width;
2170 codec->height = icodec->height;
2171 break;
2172 case AVMEDIA_TYPE_DATA:
2173 break;
2174 default:
2175 abort();
2176 }
2177 } else {
2178 if (!ost->enc)
2179 ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
2180 switch(codec->codec_type) {
2181 case AVMEDIA_TYPE_AUDIO:
2182 ost->fifo= av_fifo_alloc(1024);
2183 if(!ost->fifo)
2184 goto fail;
2185 ost->reformat_pair = MAKE_SFMT_PAIR(AV_SAMPLE_FMT_NONE,AV_SAMPLE_FMT_NONE);
2186 if (!codec->sample_rate) {
2187 codec->sample_rate = icodec->sample_rate;
2188 if (icodec->lowres)
2189 codec->sample_rate >>= icodec->lowres;
2190 }
2191 choose_sample_rate(ost->st, ost->enc);
2192 codec->time_base = (AVRational){1, codec->sample_rate};
2193 if (codec->sample_fmt == AV_SAMPLE_FMT_NONE)
2194 codec->sample_fmt = icodec->sample_fmt;
2195 choose_sample_fmt(ost->st, ost->enc);
2196 if (!codec->channels)
2197 codec->channels = icodec->channels;
2198 codec->channel_layout = icodec->channel_layout;
2199 if (av_get_channel_layout_nb_channels(codec->channel_layout) != codec->channels)
2200 codec->channel_layout = 0;
2201 ost->audio_resample = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
2202 icodec->request_channels = codec->channels;
2203 ist->decoding_needed = 1;
2204 ost->encoding_needed = 1;
2205 ost->resample_sample_fmt = icodec->sample_fmt;
2206 ost->resample_sample_rate = icodec->sample_rate;
2207 ost->resample_channels = icodec->channels;
2208 break;
2209 case AVMEDIA_TYPE_VIDEO:
2210 if (codec->pix_fmt == PIX_FMT_NONE)
2211 codec->pix_fmt = icodec->pix_fmt;
2212 choose_pixel_fmt(ost->st, ost->enc);
2213
2214 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2215 fprintf(stderr, "Video pixel format is unknown, stream cannot be encoded\n");
2216 ffmpeg_exit(1);
2217 }
2218
2219 if (!codec->width || !codec->height) {
2220 codec->width = icodec->width;
2221 codec->height = icodec->height;
2222 }
2223
2224 ost->video_resample = codec->width != icodec->width ||
2225 codec->height != icodec->height ||
2226 codec->pix_fmt != icodec->pix_fmt;
2227 if (ost->video_resample) {
2228 #if !CONFIG_AVFILTER
2229 avcodec_get_frame_defaults(&ost->pict_tmp);
2230 if(avpicture_alloc((AVPicture*)&ost->pict_tmp, codec->pix_fmt,
2231 codec->width, codec->height)) {
2232 fprintf(stderr, "Cannot allocate temp picture, check pix fmt\n");
2233 ffmpeg_exit(1);
2234 }
2235 ost->img_resample_ctx = sws_getContext(
2236 icodec->width,
2237 icodec->height,
2238 icodec->pix_fmt,
2239 codec->width,
2240 codec->height,
2241 codec->pix_fmt,
2242 ost->sws_flags, NULL, NULL, NULL);
2243 if (ost->img_resample_ctx == NULL) {
2244 fprintf(stderr, "Cannot get resampling context\n");
2245 ffmpeg_exit(1);
2246 }
2247 #endif
2248 codec->bits_per_raw_sample= 0;
2249 }
2250
2251 ost->resample_height = icodec->height;
2252 ost->resample_width = icodec->width;
2253 ost->resample_pix_fmt= icodec->pix_fmt;
2254 ost->encoding_needed = 1;
2255 ist->decoding_needed = 1;
2256
2257 if (!ost->frame_rate.num)
2258 ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25,1};
2259 if (ost->enc && ost->enc->supported_framerates && !force_fps) {
2260 int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2261 ost->frame_rate = ost->enc->supported_framerates[idx];
2262 }
2263 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
2264
2265 #if CONFIG_AVFILTER
2266 if (configure_video_filters(ist, ost)) {
2267 fprintf(stderr, "Error opening filters!\n");
2268 exit(1);
2269 }
2270 #endif
2271 break;
2272 case AVMEDIA_TYPE_SUBTITLE:
2273 ost->encoding_needed = 1;
2274 ist->decoding_needed = 1;
2275 break;
2276 default:
2277 abort();
2278 break;
2279 }
2280 /* two pass mode */
2281 if (ost->encoding_needed &&
2282 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2283 char logfilename[1024];
2284 FILE *f;
2285
2286 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2287 pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2288 i);
2289 if (codec->flags & CODEC_FLAG_PASS1) {
2290 f = fopen(logfilename, "wb");
2291 if (!f) {
2292 fprintf(stderr, "Cannot write log file '%s' for pass-1 encoding: %s\n", logfilename, strerror(errno));
2293 ffmpeg_exit(1);
2294 }
2295 ost->logfile = f;
2296 } else {
2297 char *logbuffer;
2298 size_t logbuffer_size;
2299 if (read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2300 fprintf(stderr, "Error reading log file '%s' for pass-2 encoding\n", logfilename);
2301 ffmpeg_exit(1);
2302 }
2303 codec->stats_in = logbuffer;
2304 }
2305 }
2306 }
2307 if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2308 int size= codec->width * codec->height;
2309 bit_buffer_size= FFMAX(bit_buffer_size, 6*size + 200);
2310 }
2311 }
2312
2313 if (!bit_buffer)
2314 bit_buffer = av_malloc(bit_buffer_size);
2315 if (!bit_buffer) {
2316 fprintf(stderr, "Cannot allocate %d bytes output buffer\n",
2317 bit_buffer_size);
2318 ret = AVERROR(ENOMEM);
2319 goto fail;
2320 }
2321
2322 /* open each encoder */
2323 for(i=0;i<nb_ostreams;i++) {
2324 ost = ost_table[i];
2325 if (ost->encoding_needed) {
2326 AVCodec *codec = ost->enc;
2327 AVCodecContext *dec = input_streams[ost->source_index].st->codec;
2328 if (!codec) {
2329 snprintf(error, sizeof(error), "Encoder (codec id %d) not found for output stream #%d.%d",
2330 ost->st->codec->codec_id, ost->file_index, ost->index);
2331 ret = AVERROR(EINVAL);
2332 goto dump_format;
2333 }
2334 if (dec->subtitle_header) {
2335 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2336 if (!ost->st->codec->subtitle_header) {
2337 ret = AVERROR(ENOMEM);
2338 goto dump_format;
2339 }
2340 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2341 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2342 }
2343 if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2344 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d.%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2345 ost->file_index, ost->index);
2346 ret = AVERROR(EINVAL);
2347 goto dump_format;
2348 }
2349 assert_codec_experimental(ost->st->codec, 1);
2350 assert_avoptions(ost->opts);
2351 if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2352 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2353 "It takes bits/s as argument, not kbits/s\n");
2354 extra_size += ost->st->codec->extradata_size;
2355 }
2356 }
2357
2358 /* open each decoder */
2359 for (i = 0; i < nb_input_streams; i++) {
2360 ist = &input_streams[i];
2361 if (ist->decoding_needed) {
2362 AVCodec *codec = ist->dec;
2363 if (!codec)
2364 codec = avcodec_find_decoder(ist->st->codec->codec_id);
2365 if (!codec) {
2366 snprintf(error, sizeof(error), "Decoder (codec id %d) not found for input stream #%d.%d",
2367 ist->st->codec->codec_id, ist->file_index, ist->st->index);
2368 ret = AVERROR(EINVAL);
2369 goto dump_format;
2370 }
2371
2372 /* update requested sample format for the decoder based on the
2373 corresponding encoder sample format */
2374 for (j = 0; j < nb_ostreams; j++) {
2375 ost = ost_table[j];
2376 if (ost->source_index == i) {
2377 update_sample_fmt(ist->st->codec, codec, ost->st->codec);
2378 break;
2379 }
2380 }
2381
2382 if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
2383 snprintf(error, sizeof(error), "Error while opening decoder for input stream #%d.%d",
2384 ist->file_index, ist->st->index);
2385 ret = AVERROR(EINVAL);
2386 goto dump_format;
2387 }
2388 assert_codec_experimental(ist->st->codec, 0);
2389 assert_avoptions(ost->opts);
2390 }
2391 }
2392
2393 /* init pts */
2394 for (i = 0; i < nb_input_streams; i++) {
2395 AVStream *st;
2396 ist = &input_streams[i];
2397 st= ist->st;
2398 ist->pts = st->avg_frame_rate.num ? - st->codec->has_b_frames*AV_TIME_BASE / av_q2d(st->avg_frame_rate) : 0;
2399 ist->next_pts = AV_NOPTS_VALUE;
2400 init_pts_correction(&ist->pts_ctx);
2401 ist->is_start = 1;
2402 }
2403
2404 /* set meta data information from input file if required */
2405 for (i=0;i<nb_meta_data_maps;i++) {
2406 AVFormatContext *files[2];
2407 AVDictionary **meta[2];
2408 int j;
2409
2410 #define METADATA_CHECK_INDEX(index, nb_elems, desc)\
2411 if ((index) < 0 || (index) >= (nb_elems)) {\
2412 snprintf(error, sizeof(error), "Invalid %s index %d while processing metadata maps\n",\
2413 (desc), (index));\
2414 ret = AVERROR(EINVAL);\
2415 goto dump_format;\
2416 }
2417
2418 int out_file_index = meta_data_maps[i][0].file;
2419 int in_file_index = meta_data_maps[i][1].file;
2420 if (in_file_index < 0 || out_file_index < 0)
2421 continue;
2422 METADATA_CHECK_INDEX(out_file_index, nb_output_files, "output file")
2423 METADATA_CHECK_INDEX(in_file_index, nb_input_files, "input file")
2424
2425 files[0] = output_files[out_file_index];
2426 files[1] = input_files[in_file_index].ctx;
2427
2428 for (j = 0; j < 2; j++) {
2429 MetadataMap *map = &meta_data_maps[i][j];
2430
2431 switch (map->type) {
2432 case 'g':
2433 meta[j] = &files[j]->metadata;
2434 break;
2435 case 's':
2436 METADATA_CHECK_INDEX(map->index, files[j]->nb_streams, "stream")
2437 meta[j] = &files[j]->streams[map->index]->metadata;
2438 break;
2439 case 'c':
2440 METADATA_CHECK_INDEX(map->index, files[j]->nb_chapters, "chapter")
2441 meta[j] = &files[j]->chapters[map->index]->metadata;
2442 break;
2443 case 'p':
2444 METADATA_CHECK_INDEX(map->index, files[j]->nb_programs, "program")
2445 meta[j] = &files[j]->programs[map->index]->metadata;
2446 break;
2447 }
2448 }
2449
2450 av_dict_copy(meta[0], *meta[1], AV_DICT_DONT_OVERWRITE);
2451 }
2452
2453 /* copy global metadata by default */
2454 if (metadata_global_autocopy) {
2455
2456 for (i = 0; i < nb_output_files; i++)
2457 av_dict_copy(&output_files[i]->metadata, input_files[0].ctx->metadata,
2458 AV_DICT_DONT_OVERWRITE);
2459 }
2460
2461 /* copy chapters according to chapter maps */
2462 for (i = 0; i < nb_chapter_maps; i++) {
2463 int infile = chapter_maps[i].in_file;
2464 int outfile = chapter_maps[i].out_file;
2465
2466 if (infile < 0 || outfile < 0)
2467 continue;
2468 if (infile >= nb_input_files) {
2469 snprintf(error, sizeof(error), "Invalid input file index %d in chapter mapping.\n", infile);
2470 ret = AVERROR(EINVAL);
2471 goto dump_format;
2472 }
2473 if (outfile >= nb_output_files) {
2474 snprintf(error, sizeof(error), "Invalid output file index %d in chapter mapping.\n",outfile);
2475 ret = AVERROR(EINVAL);
2476 goto dump_format;
2477 }
2478 copy_chapters(infile, outfile);
2479 }
2480
2481 /* copy chapters from the first input file that has them*/
2482 if (!nb_chapter_maps)
2483 for (i = 0; i < nb_input_files; i++) {
2484 if (!input_files[i].ctx->nb_chapters)
2485 continue;
2486
2487 for (j = 0; j < nb_output_files; j++)
2488 if ((ret = copy_chapters(i, j)) < 0)
2489 goto dump_format;
2490 break;
2491 }
2492
2493 /* open files and write file headers */
2494 for(i=0;i<nb_output_files;i++) {
2495 os = output_files[i];
2496 if (avformat_write_header(os, &output_opts[i]) < 0) {
2497 snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2498 ret = AVERROR(EINVAL);
2499 goto dump_format;
2500 }
2501 assert_avoptions(output_opts[i]);
2502 if (strcmp(output_files[i]->oformat->name, "rtp")) {
2503 want_sdp = 0;
2504 }
2505 }
2506
2507 dump_format:
2508 /* dump the file output parameters - cannot be done before in case
2509 of stream copy */
2510 for(i=0;i<nb_output_files;i++) {
2511 av_dump_format(output_files[i], i, output_files[i]->filename, 1);
2512 }
2513
2514 /* dump the stream mapping */
2515 if (verbose >= 0) {
2516 fprintf(stderr, "Stream mapping:\n");
2517 for(i=0;i<nb_ostreams;i++) {
2518 ost = ost_table[i];
2519 fprintf(stderr, " Stream #%d.%d -> #%d.%d",
2520 input_streams[ost->source_index].file_index,
2521 input_streams[ost->source_index].st->index,
2522 ost->file_index,
2523 ost->index);
2524 if (ost->sync_ist != &input_streams[ost->source_index])
2525 fprintf(stderr, " [sync #%d.%d]",
2526 ost->sync_ist->file_index,
2527 ost->sync_ist->st->index);
2528 fprintf(stderr, "\n");
2529 }
2530 }
2531
2532 if (ret) {
2533 fprintf(stderr, "%s\n", error);
2534 goto fail;
2535 }
2536
2537 if (want_sdp) {
2538 print_sdp(output_files, nb_output_files);
2539 }
2540
2541 if (verbose >= 0)
2542 fprintf(stderr, "Press ctrl-c to stop encoding\n");
2543 term_init();
2544
2545 timer_start = av_gettime();
2546
2547 for(; received_sigterm == 0;) {
2548 int file_index, ist_index;
2549 AVPacket pkt;
2550 double ipts_min;
2551 double opts_min;
2552
2553 redo:
2554 ipts_min= 1e100;
2555 opts_min= 1e100;
2556
2557 /* select the stream that we must read now by looking at the
2558 smallest output pts */
2559 file_index = -1;
2560 for(i=0;i<nb_ostreams;i++) {
2561 double ipts, opts;
2562 ost = ost_table[i];
2563 os = output_files[ost->file_index];
2564 ist = &input_streams[ost->source_index];
2565 if(ist->is_past_recording_time || no_packet[ist->file_index])
2566 continue;
2567 opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2568 ipts = (double)ist->pts;
2569 if (!input_files[ist->file_index].eof_reached){
2570 if(ipts < ipts_min) {
2571 ipts_min = ipts;
2572 if(input_sync ) file_index = ist->file_index;
2573 }
2574 if(opts < opts_min) {
2575 opts_min = opts;
2576 if(!input_sync) file_index = ist->file_index;
2577 }
2578 }
2579 if(ost->frame_number >= max_frames[ost->st->codec->codec_type]){
2580 file_index= -1;
2581 break;
2582 }
2583 }
2584 /* if none, if is finished */
2585 if (file_index < 0) {
2586 if(no_packet_count){
2587 no_packet_count=0;
2588 memset(no_packet, 0, sizeof(no_packet));
2589 usleep(10000);
2590 continue;
2591 }
2592 break;
2593 }
2594
2595 /* finish if limit size exhausted */
2596 if (limit_filesize != 0 && limit_filesize <= avio_tell(output_files[0]->pb))
2597 break;
2598
2599 /* read a frame from it and output it in the fifo */
2600 is = input_files[file_index].ctx;
2601 ret= av_read_frame(is, &pkt);
2602 if(ret == AVERROR(EAGAIN)){
2603 no_packet[file_index]=1;
2604 no_packet_count++;
2605 continue;
2606 }
2607 if (ret < 0) {
2608 input_files[file_index].eof_reached = 1;
2609 if (opt_shortest)
2610 break;
2611 else
2612 continue;
2613 }
2614
2615 no_packet_count=0;
2616 memset(no_packet, 0, sizeof(no_packet));
2617
2618 if (do_pkt_dump) {
2619 av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2620 is->streams[pkt.stream_index]);
2621 }
2622 /* the following test is needed in case new streams appear
2623 dynamically in stream : we ignore them */
2624 if (pkt.stream_index >= input_files[file_index].ctx->nb_streams)
2625 goto discard_packet;
2626 ist_index = input_files[file_index].ist_index + pkt.stream_index;
2627 ist = &input_streams[ist_index];
2628 if (ist->discard)
2629 goto discard_packet;
2630
2631 if (pkt.dts != AV_NOPTS_VALUE)
2632 pkt.dts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2633 if (pkt.pts != AV_NOPTS_VALUE)
2634 pkt.pts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2635
2636 if (ist->ts_scale) {
2637 if(pkt.pts != AV_NOPTS_VALUE)
2638 pkt.pts *= ist->ts_scale;
2639 if(pkt.dts != AV_NOPTS_VALUE)
2640 pkt.dts *= ist->ts_scale;
2641 }
2642
2643 // 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);
2644 if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2645 && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2646 int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2647 int64_t delta= pkt_dts - ist->next_pts;
2648 if((FFABS(delta) > 1LL*dts_delta_threshold*AV_TIME_BASE || pkt_dts+1<ist->pts)&& !copy_ts){
2649 input_files[ist->file_index].ts_offset -= delta;
2650 if (verbose > 2)
2651 fprintf(stderr, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2652 delta, input_files[ist->file_index].ts_offset);
2653 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2654 if(pkt.pts != AV_NOPTS_VALUE)
2655 pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2656 }
2657 }
2658
2659 /* finish if recording time exhausted */
2660 if (recording_time != INT64_MAX &&
2661 av_compare_ts(pkt.pts, ist->st->time_base, recording_time + start_time, (AVRational){1, 1000000}) >= 0) {
2662 ist->is_past_recording_time = 1;
2663 goto discard_packet;
2664 }
2665
2666 //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
2667 if (output_packet(ist, ist_index, ost_table, nb_ostreams, &pkt) < 0) {
2668
2669 if (verbose >= 0)
2670 fprintf(stderr, "Error while decoding stream #%d.%d\n",
2671 ist->file_index, ist->st->index);
2672 if (exit_on_error)
2673 ffmpeg_exit(1);
2674 av_free_packet(&pkt);
2675 goto redo;
2676 }
2677
2678 discard_packet:
2679 av_free_packet(&pkt);
2680
2681 /* dump report by using the output first video and audio streams */
2682 print_report(output_files, ost_table, nb_ostreams, 0);
2683 }
2684
2685 /* at the end of stream, we must flush the decoder buffers */
2686 for (i = 0; i < nb_input_streams; i++) {
2687 ist = &input_streams[i];
2688 if (ist->decoding_needed) {
2689 output_packet(ist, i, ost_table, nb_ostreams, NULL);
2690 }
2691 }
2692
2693 term_exit();
2694
2695 /* write the trailer if needed and close file */
2696 for(i=0;i<nb_output_files;i++) {
2697 os = output_files[i];
2698 av_write_trailer(os);
2699 }
2700
2701 /* dump report by using the first video and audio streams */
2702 print_report(output_files, ost_table, nb_ostreams, 1);
2703
2704 /* close each encoder */
2705 for(i=0;i<nb_ostreams;i++) {
2706 ost = ost_table[i];
2707 if (ost->encoding_needed) {
2708 av_freep(&ost->st->codec->stats_in);
2709 avcodec_close(ost->st->codec);
2710 }
2711 #if CONFIG_AVFILTER
2712 avfilter_graph_free(&ost->graph);
2713 #endif
2714 }
2715
2716 /* close each decoder */
2717 for (i = 0; i < nb_input_streams; i++) {
2718 ist = &input_streams[i];
2719 if (ist->decoding_needed) {
2720 avcodec_close(ist->st->codec);
2721 }
2722 }
2723
2724 /* finished ! */
2725 ret = 0;
2726
2727 fail:
2728 av_freep(&bit_buffer);
2729
2730 if (ost_table) {
2731 for(i=0;i<nb_ostreams;i++) {
2732 ost = ost_table[i];
2733 if (ost) {
2734 if (ost->st->stream_copy)
2735 av_freep(&ost->st->codec->extradata);
2736 if (ost->logfile) {
2737 fclose(ost->logfile);
2738 ost->logfile = NULL;
2739 }
2740 av_fifo_free(ost->fifo); /* works even if fifo is not
2741 initialized but set to zero */
2742 av_freep(&ost->st->codec->subtitle_header);
2743 av_free(ost->pict_tmp.data[0]);
2744 av_free(ost->forced_kf_pts);
2745 if (ost->video_resample)
2746 sws_freeContext(ost->img_resample_ctx);
2747 if (ost->resample)
2748 audio_resample_close(ost->resample);
2749 if (ost->reformat_ctx)
2750 av_audio_convert_free(ost->reformat_ctx);
2751 av_dict_free(&ost->opts);
2752 av_free(ost);
2753 }
2754 }
2755 av_free(ost_table);
2756 }
2757 return ret;
2758 }
2759
2760 static int opt_format(const char *opt, const char *arg)
2761 {
2762 last_asked_format = arg;
2763 return 0;
2764 }
2765
2766 static int opt_video_rc_override_string(const char *opt, const char *arg)
2767 {
2768 video_rc_override_string = arg;
2769 return 0;
2770 }
2771
2772 static int opt_me_threshold(const char *opt, const char *arg)
2773 {
2774 me_threshold = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
2775 return 0;
2776 }
2777
2778 static int opt_verbose(const char *opt, const char *arg)
2779 {
2780 verbose = parse_number_or_die(opt, arg, OPT_INT64, -10, 10);
2781 return 0;
2782 }
2783
2784 static int opt_frame_rate(const char *opt, const char *arg)
2785 {
2786 if (av_parse_video_rate(&frame_rate, arg) < 0) {
2787 fprintf(stderr, "Incorrect value for %s: %s\n", opt, arg);
2788 ffmpeg_exit(1);
2789 }
2790 return 0;
2791 }
2792
2793 static int opt_frame_crop(const char *opt, const char *arg)
2794 {
2795 fprintf(stderr, "Option '%s' has been removed, use the crop filter instead\n", opt);
2796 return AVERROR(EINVAL);
2797 }
2798
2799 static int opt_frame_size(const char *opt, const char *arg)
2800 {
2801 if (av_parse_video_size(&frame_width, &frame_height, arg) < 0) {
2802 fprintf(stderr, "Incorrect frame size\n");
2803 return AVERROR(EINVAL);
2804 }
2805 return 0;
2806 }
2807
2808 static int opt_pad(const char *opt, const char *arg) {
2809 fprintf(stderr, "Option '%s' has been removed, use the pad filter instead\n", opt);
2810 return -1;
2811 }
2812
2813 static int opt_frame_pix_fmt(const char *opt, const char *arg)
2814 {
2815 if (strcmp(arg, "list")) {
2816 frame_pix_fmt = av_get_pix_fmt(arg);
2817 if (frame_pix_fmt == PIX_FMT_NONE) {
2818 fprintf(stderr, "Unknown pixel format requested: %s\n", arg);
2819 return AVERROR(EINVAL);
2820 }
2821 } else {
2822 show_pix_fmts();
2823 ffmpeg_exit(0);
2824 }
2825 return 0;
2826 }
2827
2828 static int opt_frame_aspect_ratio(const char *opt, const char *arg)
2829 {
2830 int x = 0, y = 0;
2831 double ar = 0;
2832 const char *p;
2833 char *end;
2834
2835 p = strchr(arg, ':');
2836 if (p) {
2837 x = strtol(arg, &end, 10);
2838 if (end == p)
2839 y = strtol(end+1, &end, 10);
2840 if (x > 0 && y > 0)
2841 ar = (double)x / (double)y;
2842 } else
2843 ar = strtod(arg, NULL);
2844
2845 if (!ar) {
2846 fprintf(stderr, "Incorrect aspect ratio specification.\n");
2847 return AVERROR(EINVAL);
2848 }
2849 frame_aspect_ratio = ar;
2850 return 0;
2851 }
2852
2853 static int opt_metadata(const char *opt, const char *arg)
2854 {
2855 char *mid= strchr(arg, '=');
2856
2857 if(!mid){
2858 fprintf(stderr, "Missing =\n");
2859 ffmpeg_exit(1);
2860 }
2861 *mid++= 0;
2862
2863 av_dict_set(&metadata, arg, mid, 0);
2864
2865 return 0;
2866 }
2867
2868 static int opt_qscale(const char *opt, const char *arg)
2869 {
2870 video_qscale = parse_number_or_die(opt, arg, OPT_FLOAT, 0, 255);
2871 if (video_qscale == 0) {
2872 fprintf(stderr, "qscale must be > 0.0 and <= 255\n");
2873 return AVERROR(EINVAL);
2874 }
2875 return 0;
2876 }
2877
2878 static int opt_top_field_first(const char *opt, const char *arg)
2879 {
2880 top_field_first = parse_number_or_die(opt, arg, OPT_INT, 0, 1);
2881 return 0;
2882 }
2883
2884 static int opt_thread_count(const char *opt, const char *arg)
2885 {
2886 thread_count= parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2887 #if !HAVE_THREADS
2888 if (verbose >= 0)
2889 fprintf(stderr, "Warning: not compiled with thread support, using thread emulation\n");
2890 #endif
2891 return 0;
2892 }
2893
2894 static int opt_audio_sample_fmt(const char *opt, const char *arg)
2895 {
2896 if (strcmp(arg, "list")) {
2897 audio_sample_fmt = av_get_sample_fmt(arg);
2898 if (audio_sample_fmt == AV_SAMPLE_FMT_NONE) {
2899 av_log(NULL, AV_LOG_ERROR, "Invalid sample format '%s'\n", arg);
2900 return AVERROR(EINVAL);
2901 }
2902 } else {
2903 int i;
2904 char fmt_str[128];
2905 for (i = -1; i < AV_SAMPLE_FMT_NB; i++)
2906 printf("%s\n", av_get_sample_fmt_string(fmt_str, sizeof(fmt_str), i));
2907 ffmpeg_exit(0);
2908 }
2909 return 0;
2910 }
2911
2912 static int opt_audio_rate(const char *opt, const char *arg)
2913 {
2914 audio_sample_rate = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2915 return 0;
2916 }
2917
2918 static int opt_audio_channels(const char *opt, const char *arg)
2919 {
2920 audio_channels = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2921 return 0;
2922 }
2923
2924 static int opt_video_channel(const char *opt, const char *arg)
2925 {
2926 av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -channel.\n");
2927 opt_default("channel", arg);
2928 return 0;
2929 }
2930
2931 static int opt_video_standard(const char *opt, const char *arg)
2932 {
2933 av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -standard.\n");
2934 opt_default("standard", arg);
2935 return 0;
2936 }
2937
2938 static int opt_codec(int *pstream_copy, char **pcodec_name,
2939 int codec_type, const char *arg)
2940 {
2941 av_freep(pcodec_name);
2942 if (!strcmp(arg, "copy")) {
2943 *pstream_copy = 1;
2944 } else {
2945 *pcodec_name = av_strdup(arg);
2946 }
2947 return 0;
2948 }
2949
2950 static int opt_audio_codec(const char *opt, const char *arg)
2951 {
2952 return opt_codec(&audio_stream_copy, &audio_codec_name, AVMEDIA_TYPE_AUDIO, arg);
2953 }
2954
2955 static int opt_video_codec(const char *opt, const char *arg)
2956 {
2957 return opt_codec(&video_stream_copy, &video_codec_name, AVMEDIA_TYPE_VIDEO, arg);
2958 }
2959
2960 static int opt_subtitle_codec(const char *opt, const char *arg)
2961 {
2962 return opt_codec(&subtitle_stream_copy, &subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, arg);
2963 }
2964
2965 static int opt_data_codec(const char *opt, const char *arg)
2966 {
2967 return opt_codec(&data_stream_copy, &data_codec_name, AVMEDIA_TYPE_DATA, arg);
2968 }
2969
2970 static int opt_codec_tag(const char *opt, const char *arg)
2971 {
2972 char *tail;
2973 uint32_t *codec_tag;
2974
2975 codec_tag = !strcmp(opt, "atag") ? &audio_codec_tag :
2976 !strcmp(opt, "vtag") ? &video_codec_tag :
2977 !strcmp(opt, "stag") ? &subtitle_codec_tag : NULL;
2978 if (!codec_tag)
2979 return -1;
2980
2981 *codec_tag = strtol(arg, &tail, 0);
2982 if (!tail || *tail)
2983 *codec_tag = AV_RL32(arg);
2984
2985 return 0;
2986 }
2987
2988 static int opt_map(const char *opt, const char *arg)
2989 {
2990 StreamMap *m;
2991 char *p;
2992
2993 stream_maps = grow_array(stream_maps, sizeof(*stream_maps), &nb_stream_maps, nb_stream_maps + 1);
2994 m = &stream_maps[nb_stream_maps-1];
2995
2996 m->file_index = strtol(arg, &p, 0);
2997 if (*p)
2998 p++;
2999
3000 m->stream_index = strtol(p, &p, 0);
3001 if (*p) {
3002 p++;
3003 m->sync_file_index = strtol(p, &p, 0);
3004 if (*p)
3005 p++;
3006 m->sync_stream_index = strtol(p, &p, 0);
3007 } else {
3008 m->sync_file_index = m->file_index;
3009 m->sync_stream_index = m->stream_index;
3010 }
3011 return 0;
3012 }
3013
3014 static void parse_meta_type(char *arg, char *type, int *index, char **endptr)
3015 {
3016 *endptr = arg;
3017 if (*arg == ',') {
3018 *type = *(++arg);
3019 switch (*arg) {
3020 case 'g':
3021 break;
3022 case 's':
3023 case 'c':
3024 case 'p':
3025 *index = strtol(++arg, endptr, 0);
3026 break;
3027 default:
3028 fprintf(stderr, "Invalid metadata type %c.\n", *arg);
3029 ffmpeg_exit(1);
3030 }
3031 } else
3032 *type = 'g';
3033 }
3034
3035 static int opt_map_metadata(const char *opt, const char *arg)
3036 {
3037 MetadataMap *m, *m1;
3038 char *p;
3039
3040 meta_data_maps = grow_array(meta_data_maps, sizeof(*meta_data_maps),
3041 &nb_meta_data_maps, nb_meta_data_maps + 1);
3042
3043 m = &meta_data_maps[nb_meta_data_maps - 1][0];
3044 m->file = strtol(arg, &p, 0);
3045 parse_meta_type(p, &m->type, &m->index, &p);
3046 if (*p)
3047 p++;
3048
3049 m1 = &meta_data_maps[nb_meta_data_maps - 1][1];
3050 m1->file = strtol(p, &p, 0);
3051 parse_meta_type(p, &m1->type, &m1->index, &p);
3052
3053 if (m->type == 'g' || m1->type == 'g')
3054 metadata_global_autocopy = 0;
3055 if (m->type == 's' || m1->type == 's')
3056 metadata_streams_autocopy = 0;
3057 if (m->type == 'c' || m1->type == 'c')
3058 metadata_chapters_autocopy = 0;
3059
3060 return 0;
3061 }
3062
3063 static int opt_map_meta_data(const char *opt, const char *arg)
3064 {
3065 fprintf(stderr, "-map_meta_data is deprecated and will be removed soon. "
3066 "Use -map_metadata instead.\n");
3067 return opt_map_metadata(opt, arg);
3068 }
3069
3070 static int opt_map_chapters(const char *opt, const char *arg)
3071 {
3072 ChapterMap *c;
3073 char *p;
3074
3075 chapter_maps = grow_array(chapter_maps, sizeof(*chapter_maps), &nb_chapter_maps,
3076 nb_chapter_maps + 1);
3077 c = &chapter_maps[nb_chapter_maps - 1];
3078 c->out_file = strtol(arg, &p, 0);
3079 if (*p)
3080 p++;
3081
3082 c->in_file = strtol(p, &p, 0);
3083 return 0;
3084 }
3085
3086 static int opt_input_ts_scale(const char *opt, const char *arg)
3087 {
3088 unsigned int stream;
3089 double scale;
3090 char *p;
3091
3092 stream = strtol(arg, &p, 0);
3093 if (*p)
3094 p++;
3095 scale= strtod(p, &p);
3096
3097 ts_scale = grow_array(ts_scale, sizeof(*ts_scale), &nb_ts_scale, stream + 1);
3098 ts_scale[stream] = scale;
3099 return 0;
3100 }
3101
3102 static int opt_recording_time(const char *opt, const char *arg)
3103 {
3104 recording_time = parse_time_or_die(opt, arg, 1);
3105 return 0;
3106 }
3107
3108 static int opt_start_time(const char *opt, const char *arg)
3109 {
3110 start_time = parse_time_or_die(opt, arg, 1);
3111 return 0;
3112 }
3113
3114 static int opt_recording_timestamp(const char *opt, const char *arg)
3115 {
3116 char buf[128];
3117 int64_t recording_timestamp = parse_time_or_die(opt, arg, 0) / 1E6;
3118 struct tm time = *gmtime((time_t*)&recording_timestamp);
3119 strftime(buf, sizeof(buf), "creation_time=%FT%T%z", &time);
3120 opt_metadata("metadata", buf);
3121
3122 av_log(NULL, AV_LOG_WARNING, "%s is deprecated, set the 'creation_time' metadata "
3123 "tag instead.\n", opt);
3124 return 0;
3125 }
3126
3127 static int opt_input_ts_offset(const char *opt, const char *arg)
3128 {
3129 input_ts_offset = parse_time_or_die(opt, arg, 1);
3130 return 0;
3131 }
3132
3133 static enum CodecID find_codec_or_die(const char *name, int type, int encoder)
3134 {
3135 const char *codec_string = encoder ? "encoder" : "decoder";
3136 AVCodec *codec;
3137
3138 if(!name)
3139 return CODEC_ID_NONE;
3140 codec = encoder ?
3141 avcodec_find_encoder_by_name(name) :
3142 avcodec_find_decoder_by_name(name);
3143 if(!codec) {
3144 fprintf(stderr, "Unknown %s '%s'\n", codec_string, name);
3145 ffmpeg_exit(1);
3146 }
3147 if(codec->type != type) {
3148 fprintf(stderr, "Invalid %s type '%s'\n", codec_string, name);
3149 ffmpeg_exit(1);
3150 }
3151 return codec->id;
3152 }
3153
3154 static int opt_input_file(const char *opt, const char *filename)
3155 {
3156 AVFormatContext *ic;
3157 AVInputFormat *file_iformat = NULL;
3158 int err, i, ret, rfps, rfps_base;
3159 int64_t timestamp;
3160 uint8_t buf[128];
3161 AVDictionary **opts;
3162 int orig_nb_streams; // number of streams before avformat_find_stream_info
3163
3164 if (last_asked_format) {
3165 if (!(file_iformat = av_find_input_format(last_asked_format))) {
3166 fprintf(stderr, "Unknown input format: '%s'\n", last_asked_format);
3167 ffmpeg_exit(1);
3168 }
3169 last_asked_format = NULL;
3170 }
3171
3172 if (!strcmp(filename, "-"))
3173 filename = "pipe:";
3174
3175 using_stdin |= !strncmp(filename, "pipe:", 5) ||
3176 !strcmp(filename, "/dev/stdin");
3177
3178 /* get default parameters from command line */
3179 ic = avformat_alloc_context();
3180 if (!ic) {
3181 print_error(filename, AVERROR(ENOMEM));
3182 ffmpeg_exit(1);
3183 }
3184 if (audio_sample_rate) {
3185 snprintf(buf, sizeof(buf), "%d", audio_sample_rate);
3186 av_dict_set(&format_opts, "sample_rate", buf, 0);
3187 }
3188 if (audio_channels) {
3189 snprintf(buf, sizeof(buf), "%d", audio_channels);
3190 av_dict_set(&format_opts, "channels", buf, 0);
3191 }
3192 if (frame_rate.num) {
3193 snprintf(buf, sizeof(buf), "%d/%d", frame_rate.num, frame_rate.den);
3194 av_dict_set(&format_opts, "framerate", buf, 0);
3195 }
3196 if (frame_width && frame_height) {
3197 snprintf(buf, sizeof(buf), "%dx%d", frame_width, frame_height);
3198 av_dict_set(&format_opts, "video_size", buf, 0);
3199 }
3200 if (frame_pix_fmt != PIX_FMT_NONE)
3201 av_dict_set(&format_opts, "pixel_format", av_get_pix_fmt_name(frame_pix_fmt), 0);
3202
3203 ic->video_codec_id =
3204 find_codec_or_die(video_codec_name , AVMEDIA_TYPE_VIDEO , 0);
3205 ic->audio_codec_id =
3206 find_codec_or_die(audio_codec_name , AVMEDIA_TYPE_AUDIO , 0);
3207 ic->subtitle_codec_id=
3208 find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 0);
3209 ic->flags |= AVFMT_FLAG_NONBLOCK;
3210
3211 /* open the input file with generic libav function */
3212 err = avformat_open_input(&ic, filename, file_iformat, &format_opts);
3213 if (err < 0) {
3214 print_error(filename, err);
3215 ffmpeg_exit(1);
3216 }
3217 assert_avoptions(format_opts);
3218
3219 if(opt_programid) {
3220 int i, j;
3221 int found=0;
3222 for(i=0; i<ic->nb_streams; i++){
3223 ic->streams[i]->discard= AVDISCARD_ALL;
3224 }
3225 for(i=0; i<ic->nb_programs; i++){
3226 AVProgram *p= ic->programs[i];
3227 if(p->id != opt_programid){
3228 p->discard = AVDISCARD_ALL;
3229 }else{
3230 found=1;
3231 for(j=0; j<p->nb_stream_indexes; j++){
3232 ic->streams[p->stream_index[j]]->discard= AVDISCARD_DEFAULT;
3233 }
3234 }
3235 }
3236 if(!found){
3237 fprintf(stderr, "Specified program id not found\n");
3238 ffmpeg_exit(1);
3239 }
3240 opt_programid=0;
3241 }
3242
3243 if (loop_input) {
3244 av_log(NULL, AV_LOG_WARNING, "-loop_input is deprecated, use -loop 1\n");
3245 ic->loop_input = loop_input;
3246 }
3247
3248 /* Set AVCodecContext options for avformat_find_stream_info */
3249 opts = setup_find_stream_info_opts(ic, codec_opts);
3250 orig_nb_streams = ic->nb_streams;
3251
3252 /* If not enough info to get the stream parameters, we decode the
3253 first frames to get it. (used in mpeg case for example) */
3254 ret = avformat_find_stream_info(ic, opts);
3255 if (ret < 0 && verbose >= 0) {
3256 fprintf(stderr, "%s: could not find codec parameters\n", filename);
3257 av_close_input_file(ic);
3258 ffmpeg_exit(1);
3259 }
3260
3261 timestamp = start_time;
3262 /* add the stream start time */
3263 if (ic->start_time != AV_NOPTS_VALUE)
3264 timestamp += ic->start_time;
3265
3266 /* if seeking requested, we execute it */
3267 if (start_time != 0) {
3268 ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
3269 if (ret < 0) {
3270 fprintf(stderr, "%s: could not seek to position %0.3f\n",
3271 filename, (double)timestamp / AV_TIME_BASE);
3272 }
3273 /* reset seek info */
3274 start_time = 0;
3275 }
3276
3277 /* update the current parameters so that they match the one of the input stream */
3278 for(i=0;i<ic->nb_streams;i++) {
3279 AVStream *st = ic->streams[i];
3280 AVCodecContext *dec = st->codec;
3281 InputStream *ist;
3282
3283 dec->thread_count = thread_count;
3284
3285 input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
3286 ist = &input_streams[nb_input_streams - 1];
3287 ist->st = st;
3288 ist->file_index = nb_input_files;
3289 ist->discard = 1;
3290 ist->opts = filter_codec_opts(codec_opts, ist->st->codec->codec_id, ic, st);
3291
3292 if (i < nb_ts_scale)
3293 ist->ts_scale = ts_scale[i];
3294
3295 switch (dec->codec_type) {
3296 case AVMEDIA_TYPE_AUDIO:
3297 ist->dec = avcodec_find_decoder_by_name(audio_codec_name);
3298 if(audio_disable)
3299 st->discard= AVDISCARD_ALL;
3300 break;
3301 case AVMEDIA_TYPE_VIDEO:
3302 ist->dec = avcodec_find_decoder_by_name(video_codec_name);
3303 rfps = ic->streams[i]->r_frame_rate.num;
3304 rfps_base = ic->streams[i]->r_frame_rate.den;
3305 if (dec->lowres) {
3306 dec->flags |= CODEC_FLAG_EMU_EDGE;
3307 dec->height >>= dec->lowres;
3308 dec->width >>= dec->lowres;
3309 }
3310 if(me_threshold)
3311 dec->debug |= FF_DEBUG_MV;
3312
3313 if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
3314
3315 if (verbose >= 0)
3316 fprintf(stderr,"\nSeems stream %d codec frame rate differs from container frame rate: %2.2f (%d/%d) -> %2.2f (%d/%d)\n",
3317 i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
3318
3319 (float)rfps / rfps_base, rfps, rfps_base);
3320 }
3321
3322 if(video_disable)
3323 st->discard= AVDISCARD_ALL;
3324 else if(video_discard)
3325 st->discard= video_discard;
3326 break;
3327 case AVMEDIA_TYPE_DATA:
3328 break;
3329 case AVMEDIA_TYPE_SUBTITLE:
3330 ist->dec = avcodec_find_decoder_by_name(subtitle_codec_name);
3331 if(subtitle_disable)
3332 st->discard = AVDISCARD_ALL;
3333 break;
3334 case AVMEDIA_TYPE_ATTACHMENT:
3335 case AVMEDIA_TYPE_UNKNOWN:
3336 break;
3337 default:
3338 abort();
3339 }
3340 }
3341
3342 /* dump the file content */
3343 if (verbose >= 0)
3344 av_dump_format(ic, nb_input_files, filename, 0);
3345
3346 input_files = grow_array(input_files, sizeof(*input_files), &nb_input_files, nb_input_files + 1);
3347 input_files[nb_input_files - 1].ctx = ic;
3348 input_files[nb_input_files - 1].ist_index = nb_input_streams - ic->nb_streams;
3349 input_files[nb_input_files - 1].ts_offset = input_ts_offset - (copy_ts ? 0 : timestamp);
3350
3351 frame_rate = (AVRational){0, 0};
3352 frame_pix_fmt = PIX_FMT_NONE;
3353 frame_height = 0;
3354 frame_width = 0;
3355 audio_sample_rate = 0;
3356 audio_channels = 0;
3357 audio_sample_fmt = AV_SAMPLE_FMT_NONE;
3358 av_freep(&ts_scale);
3359 nb_ts_scale = 0;
3360
3361 for (i = 0; i < orig_nb_streams; i++)
3362 av_dict_free(&opts[i]);
3363 av_freep(&opts);
3364 av_freep(&video_codec_name);
3365 av_freep(&audio_codec_name);
3366 av_freep(&subtitle_codec_name);
3367 uninit_opts();
3368 init_opts();
3369 return 0;
3370 }
3371
3372 static void check_inputs(int *has_video_ptr,
3373 int *has_audio_ptr,
3374 int *has_subtitle_ptr,
3375 int *has_data_ptr)
3376 {
3377 int has_video, has_audio, has_subtitle, has_data, i, j;
3378 AVFormatContext *ic;
3379
3380 has_video = 0;
3381 has_audio = 0;
3382 has_subtitle = 0;
3383 has_data = 0;
3384
3385 for(j=0;j<nb_input_files;j++) {
3386 ic = input_files[j].ctx;
3387 for(i=0;i<ic->nb_streams;i++) {
3388 AVCodecContext *enc = ic->streams[i]->codec;
3389 switch(enc->codec_type) {
3390 case AVMEDIA_TYPE_AUDIO:
3391 has_audio = 1;
3392 break;
3393 case AVMEDIA_TYPE_VIDEO:
3394 has_video = 1;
3395 break;
3396 case AVMEDIA_TYPE_SUBTITLE:
3397 has_subtitle = 1;
3398 break;
3399 case AVMEDIA_TYPE_DATA:
3400 case AVMEDIA_TYPE_ATTACHMENT:
3401 case AVMEDIA_TYPE_UNKNOWN:
3402 has_data = 1;
3403 break;
3404 default:
3405 abort();
3406 }
3407 }
3408 }
3409 *has_video_ptr = has_video;
3410 *has_audio_ptr = has_audio;
3411 *has_subtitle_ptr = has_subtitle;
3412 *has_data_ptr = has_data;
3413 }
3414
3415 static void new_video_stream(AVFormatContext *oc, int file_idx)
3416 {
3417 AVStream *st;
3418 OutputStream *ost;
3419 AVCodecContext *video_enc;
3420 enum CodecID codec_id = CODEC_ID_NONE;
3421 AVCodec *codec= NULL;
3422
3423 if(!video_stream_copy){
3424 if (video_codec_name) {
3425 codec_id = find_codec_or_die(video_codec_name, AVMEDIA_TYPE_VIDEO, 1);
3426 codec = avcodec_find_encoder_by_name(video_codec_name);
3427 } else {
3428 codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_VIDEO);
3429 codec = avcodec_find_encoder(codec_id);
3430 }
3431 }
3432
3433 ost = new_output_stream(oc, file_idx, codec);
3434 st = ost->st;
3435 if (!video_stream_copy) {
3436 ost->frame_aspect_ratio = frame_aspect_ratio;
3437 frame_aspect_ratio = 0;
3438 #if CONFIG_AVFILTER
3439 ost->avfilter= vfilters;
3440 vfilters = NULL;
3441 #endif
3442 }
3443
3444 ost->bitstream_filters = video_bitstream_filters;
3445 video_bitstream_filters= NULL;
3446
3447 st->codec->thread_count= thread_count;
3448
3449 video_enc = st->codec;
3450
3451 if(video_codec_tag)
3452 video_enc->codec_tag= video_codec_tag;
3453
3454 if(oc->oformat->flags & AVFMT_GLOBALHEADER) {
3455 video_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3456 }
3457
3458 video_enc->codec_type = AVMEDIA_TYPE_VIDEO;
3459 if (video_stream_copy) {
3460 st->stream_copy = 1;
3461 video_enc->sample_aspect_ratio =
3462 st->sample_aspect_ratio = av_d2q(frame_aspect_ratio*frame_height/frame_width, 255);
3463 } else {
3464 const char *p;
3465 int i;
3466
3467 if (frame_rate.num)
3468 ost->frame_rate = frame_rate;
3469 video_enc->codec_id = codec_id;
3470
3471 video_enc->width = frame_width;
3472 video_enc->height = frame_height;
3473 video_enc->pix_fmt = frame_pix_fmt;
3474 st->sample_aspect_ratio = video_enc->sample_aspect_ratio;
3475
3476 if (intra_only)
3477 video_enc->gop_size = 0;
3478 if (video_qscale || same_quality) {
3479 video_enc->flags |= CODEC_FLAG_QSCALE;
3480 video_enc->global_quality = FF_QP2LAMBDA * video_qscale;
3481 }
3482
3483 if(intra_matrix)
3484 video_enc->intra_matrix = intra_matrix;
3485 if(inter_matrix)
3486 video_enc->inter_matrix = inter_matrix;
3487
3488 p= video_rc_override_string;
3489 for(i=0; p; i++){
3490 int start, end, q;
3491 int e=sscanf(p, "%d,%d,%d", &start, &end, &q);
3492 if(e!=3){
3493 fprintf(stderr, "error parsing rc_override\n");
3494 ffmpeg_exit(1);
3495 }
3496 video_enc->rc_override=
3497 av_realloc(video_enc->rc_override,
3498 sizeof(RcOverride)*(i+1));
3499 video_enc->rc_override[i].start_frame= start;
3500 video_enc->rc_override[i].end_frame = end;
3501 if(q>0){
3502 video_enc->rc_override[i].qscale= q;
3503 video_enc->rc_override[i].quality_factor= 1.0;
3504 }
3505 else{
3506 video_enc->rc_override[i].qscale= 0;
3507 video_enc->rc_override[i].quality_factor= -q/100.0;
3508 }
3509 p= strchr(p, '/');
3510 if(p) p++;
3511 }
3512 video_enc->rc_override_count=i;
3513 if (!video_enc->rc_initial_buffer_occupancy)
3514 video_enc->rc_initial_buffer_occupancy = video_enc->rc_buffer_size*3/4;
3515 video_enc->me_threshold= me_threshold;
3516 video_enc->intra_dc_precision= intra_dc_precision - 8;
3517
3518 if (do_psnr)
3519 video_enc->flags|= CODEC_FLAG_PSNR;
3520
3521 /* two pass mode */
3522 if (do_pass) {
3523 if (do_pass == 1) {
3524 video_enc->flags |= CODEC_FLAG_PASS1;
3525 } else {
3526 video_enc->flags |= CODEC_FLAG_PASS2;
3527 }
3528 }
3529
3530 if (forced_key_frames)
3531 parse_forced_key_frames(forced_key_frames, ost, video_enc);
3532 }
3533 if (video_language) {
3534 av_dict_set(&st->metadata, "language", video_language, 0);
3535 av_freep(&video_language);
3536 }
3537
3538 /* reset some key parameters */
3539 video_disable = 0;
3540 av_freep(&video_codec_name);
3541 av_freep(&forced_key_frames);
3542 video_stream_copy = 0;
3543 frame_pix_fmt = PIX_FMT_NONE;
3544 }
3545
3546 static void new_audio_stream(AVFormatContext *oc, int file_idx)
3547 {
3548 AVStream *st;
3549 OutputStream *ost;
3550 AVCodec *codec= NULL;
3551 AVCodecContext *audio_enc;
3552 enum CodecID codec_id = CODEC_ID_NONE;
3553
3554 if(!audio_stream_copy){
3555 if (audio_codec_name) {
3556 codec_id = find_codec_or_die(audio_codec_name, AVMEDIA_TYPE_AUDIO, 1);
3557 codec = avcodec_find_encoder_by_name(audio_codec_name);
3558 } else {
3559 codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_AUDIO);
3560 codec = avcodec_find_encoder(codec_id);
3561 }
3562 }
3563 ost = new_output_stream(oc, file_idx, codec);
3564 st = ost->st;
3565
3566 ost->bitstream_filters = audio_bitstream_filters;
3567 audio_bitstream_filters= NULL;
3568
3569 st->codec->thread_count= thread_count;
3570
3571 audio_enc = st->codec;
3572 audio_enc->codec_type = AVMEDIA_TYPE_AUDIO;
3573
3574 if(audio_codec_tag)
3575 audio_enc->codec_tag= audio_codec_tag;
3576
3577 if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3578 audio_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3579 }
3580 if (audio_stream_copy) {
3581 st->stream_copy = 1;
3582 } else {
3583 audio_enc->codec_id = codec_id;
3584
3585 if (audio_qscale > QSCALE_NONE) {
3586 audio_enc->flags |= CODEC_FLAG_QSCALE;
3587 audio_enc->global_quality = FF_QP2LAMBDA * audio_qscale;
3588 }
3589 if (audio_channels)
3590 audio_enc->channels = audio_channels;
3591 if (audio_sample_fmt != AV_SAMPLE_FMT_NONE)
3592 audio_enc->sample_fmt = audio_sample_fmt;
3593 if (audio_sample_rate)
3594 audio_enc->sample_rate = audio_sample_rate;
3595 }
3596 if (audio_language) {
3597 av_dict_set(&st->metadata, "language", audio_language, 0);
3598 av_freep(&audio_language);
3599 }
3600
3601 /* reset some key parameters */
3602 audio_disable = 0;
3603 av_freep(&audio_codec_name);
3604 audio_stream_copy = 0;
3605 }
3606
3607 static void new_data_stream(AVFormatContext *oc, int file_idx)
3608 {
3609 AVStream *st;
3610 OutputStream *ost;
3611 AVCodecContext *data_enc;
3612
3613 ost = new_output_stream(oc, file_idx, NULL);
3614 st = ost->st;
3615 data_enc = st->codec;
3616 if (!data_stream_copy) {
3617 fprintf(stderr, "Data stream encoding not supported yet (only streamcopy)\n");
3618 ffmpeg_exit(1);
3619 }
3620
3621 data_enc->codec_type = AVMEDIA_TYPE_DATA;
3622
3623 if (data_codec_tag)
3624 data_enc->codec_tag= data_codec_tag;
3625
3626 if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3627 data_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3628 }
3629 if (data_stream_copy) {
3630 st->stream_copy = 1;
3631 }
3632
3633 data_disable = 0;
3634 av_freep(&data_codec_name);
3635 data_stream_copy = 0;
3636 }
3637
3638 static void new_subtitle_stream(AVFormatContext *oc, int file_idx)
3639 {
3640 AVStream *st;
3641 OutputStream *ost;
3642 AVCodec *codec=NULL;
3643 AVCodecContext *subtitle_enc;
3644 enum CodecID codec_id = CODEC_ID_NONE;
3645
3646 if(!subtitle_stream_copy){
3647 if (subtitle_codec_name) {
3648 codec_id = find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 1);
3649 codec = avcodec_find_encoder_by_name(subtitle_codec_name);
3650 } else {
3651 codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_SUBTITLE);
3652 codec = avcodec_find_encoder(codec_id);
3653 }
3654 }
3655 ost = new_output_stream(oc, file_idx, codec);
3656 st = ost->st;
3657 subtitle_enc = st->codec;
3658
3659 ost->bitstream_filters = subtitle_bitstream_filters;
3660 subtitle_bitstream_filters= NULL;
3661
3662 subtitle_enc->codec_type = AVMEDIA_TYPE_SUBTITLE;
3663
3664 if(subtitle_codec_tag)
3665 subtitle_enc->codec_tag= subtitle_codec_tag;
3666
3667 if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3668 subtitle_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3669 }
3670 if (subtitle_stream_copy) {
3671 st->stream_copy = 1;
3672 } else {
3673 subtitle_enc->codec_id = codec_id;
3674 }
3675
3676 if (subtitle_language) {
3677 av_dict_set(&st->metadata, "language", subtitle_language, 0);
3678 av_freep(&subtitle_language);
3679 }