avtools: reinitialise filter chain when input video stream changes dimensions
[libav.git] / avconv.c
1 /*
2 * avconv main
3 * Copyright (c) 2000-2011 The libav developers.
4 *
5 * This file is part of Libav.
6 *
7 * Libav is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * Libav is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with Libav; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 #include "config.h"
23 #include <ctype.h>
24 #include <string.h>
25 #include <math.h>
26 #include <stdlib.h>
27 #include <errno.h>
28 #include <signal.h>
29 #include <limits.h>
30 #include <unistd.h>
31 #include "libavformat/avformat.h"
32 #include "libavdevice/avdevice.h"
33 #include "libswscale/swscale.h"
34 #include "libavutil/opt.h"
35 #include "libavcodec/audioconvert.h"
36 #include "libavutil/audioconvert.h"
37 #include "libavutil/parseutils.h"
38 #include "libavutil/samplefmt.h"
39 #include "libavutil/colorspace.h"
40 #include "libavutil/fifo.h"
41 #include "libavutil/intreadwrite.h"
42 #include "libavutil/dict.h"
43 #include "libavutil/mathematics.h"
44 #include "libavutil/pixdesc.h"
45 #include "libavutil/avstring.h"
46 #include "libavutil/libm.h"
47 #include "libavformat/os_support.h"
48
49 #if CONFIG_AVFILTER
50 # include "libavfilter/avfilter.h"
51 # include "libavfilter/avfiltergraph.h"
52 # include "libavfilter/vsrc_buffer.h"
53 #endif
54
55 #if HAVE_SYS_RESOURCE_H
56 #include <sys/types.h>
57 #include <sys/time.h>
58 #include <sys/resource.h>
59 #elif HAVE_GETPROCESSTIMES
60 #include <windows.h>
61 #endif
62 #if HAVE_GETPROCESSMEMORYINFO
63 #include <windows.h>
64 #include <psapi.h>
65 #endif
66
67 #if HAVE_SYS_SELECT_H
68 #include <sys/select.h>
69 #endif
70
71 #include <time.h>
72
73 #include "cmdutils.h"
74
75 #include "libavutil/avassert.h"
76
77 const char program_name[] = "avconv";
78 const int program_birth_year = 2000;
79
80 /* select an input stream for an output stream */
81 typedef struct StreamMap {
82 int disabled; /** 1 is this mapping is disabled by a negative map */
83 int file_index;
84 int stream_index;
85 int sync_file_index;
86 int sync_stream_index;
87 } StreamMap;
88
89 /**
90 * select an input file for an output file
91 */
92 typedef struct MetadataMap {
93 int file; //< file index
94 char type; //< type of metadata to copy -- (g)lobal, (s)tream, (c)hapter or (p)rogram
95 int index; //< stream/chapter/program number
96 } MetadataMap;
97
98 static const OptionDef options[];
99
100 #define MAX_FILES 100
101
102 static const char *last_asked_format = NULL;
103 static double *ts_scale;
104 static int nb_ts_scale;
105
106 static AVFormatContext *output_files[MAX_FILES];
107 static AVDictionary *output_opts[MAX_FILES];
108 static int nb_output_files = 0;
109
110 static StreamMap *stream_maps = NULL;
111 static int nb_stream_maps;
112
113 /* first item specifies output metadata, second is input */
114 static MetadataMap (*meta_data_maps)[2] = NULL;
115 static int nb_meta_data_maps;
116 static int metadata_global_autocopy = 1;
117 static int metadata_streams_autocopy = 1;
118 static int metadata_chapters_autocopy = 1;
119
120 static int chapters_input_file = INT_MAX;
121
122 /* indexed by output file stream index */
123 static int *streamid_map = NULL;
124 static int nb_streamid_map = 0;
125
126 static int frame_width = 0;
127 static int frame_height = 0;
128 static float frame_aspect_ratio = 0;
129 static enum PixelFormat frame_pix_fmt = PIX_FMT_NONE;
130 static enum AVSampleFormat audio_sample_fmt = AV_SAMPLE_FMT_NONE;
131 static int max_frames[4] = {INT_MAX, INT_MAX, INT_MAX, INT_MAX};
132 static AVRational frame_rate;
133 static float video_qscale = 0;
134 static uint16_t *intra_matrix = NULL;
135 static uint16_t *inter_matrix = NULL;
136 static const char *video_rc_override_string=NULL;
137 static int video_disable = 0;
138 static int video_discard = 0;
139 static char *video_codec_name = NULL;
140 static unsigned int video_codec_tag = 0;
141 static char *video_language = NULL;
142 static int same_quality = 0;
143 static int do_deinterlace = 0;
144 static int top_field_first = -1;
145 static int me_threshold = 0;
146 static int intra_dc_precision = 8;
147 static int qp_hist = 0;
148 #if CONFIG_AVFILTER
149 static char *vfilters = NULL;
150 #endif
151
152 static int intra_only = 0;
153 static int audio_sample_rate = 0;
154 #define QSCALE_NONE -99999
155 static float audio_qscale = QSCALE_NONE;
156 static int audio_disable = 0;
157 static int audio_channels = 0;
158 static char *audio_codec_name = NULL;
159 static unsigned int audio_codec_tag = 0;
160 static char *audio_language = NULL;
161
162 static int subtitle_disable = 0;
163 static char *subtitle_codec_name = NULL;
164 static char *subtitle_language = NULL;
165 static unsigned int subtitle_codec_tag = 0;
166
167 static int data_disable = 0;
168 static char *data_codec_name = NULL;
169 static unsigned int data_codec_tag = 0;
170
171 static float mux_preload= 0.5;
172 static float mux_max_delay= 0.7;
173
174 static int64_t recording_time = INT64_MAX;
175 static int64_t start_time = 0;
176 static int64_t input_ts_offset = 0;
177 static int file_overwrite = 0;
178 static AVDictionary *metadata;
179 static int do_benchmark = 0;
180 static int do_hex_dump = 0;
181 static int do_pkt_dump = 0;
182 static int do_psnr = 0;
183 static int do_pass = 0;
184 static char *pass_logfilename_prefix = NULL;
185 static int audio_stream_copy = 0;
186 static int video_stream_copy = 0;
187 static int subtitle_stream_copy = 0;
188 static int data_stream_copy = 0;
189 static int video_sync_method= -1;
190 static int audio_sync_method= 0;
191 static float audio_drift_threshold= 0.1;
192 static int copy_ts= 0;
193 static int copy_tb;
194 static int opt_shortest = 0;
195 static char *vstats_filename;
196 static FILE *vstats_file;
197 static int opt_programid = 0;
198 static int copy_initial_nonkeyframes = 0;
199
200 static int rate_emu = 0;
201
202 static int audio_volume = 256;
203
204 static int exit_on_error = 0;
205 static int using_stdin = 0;
206 static int verbose = 1;
207 static int thread_count= 1;
208 static int64_t video_size = 0;
209 static int64_t audio_size = 0;
210 static int64_t extra_size = 0;
211 static int nb_frames_dup = 0;
212 static int nb_frames_drop = 0;
213 static int input_sync;
214 static uint64_t limit_filesize = 0;
215 static int force_fps = 0;
216 static char *forced_key_frames = NULL;
217
218 static float dts_delta_threshold = 10;
219
220 static int64_t timer_start;
221
222 static uint8_t *audio_buf;
223 static uint8_t *audio_out;
224 static unsigned int allocated_audio_out_size, allocated_audio_buf_size;
225
226 static short *samples;
227
228 static AVBitStreamFilterContext *video_bitstream_filters=NULL;
229 static AVBitStreamFilterContext *audio_bitstream_filters=NULL;
230 static AVBitStreamFilterContext *subtitle_bitstream_filters=NULL;
231
232 #define DEFAULT_PASS_LOGFILENAME_PREFIX "av2pass"
233
234 struct InputStream;
235
236 typedef struct OutputStream {
237 int file_index; /* file index */
238 int index; /* stream index in the output file */
239 int source_index; /* InputStream index */
240 AVStream *st; /* stream in the output file */
241 int encoding_needed; /* true if encoding needed for this stream */
242 int frame_number;
243 /* input pts and corresponding output pts
244 for A/V sync */
245 //double sync_ipts; /* dts from the AVPacket of the demuxer in second units */
246 struct InputStream *sync_ist; /* input stream to sync against */
247 int64_t sync_opts; /* output frame counter, could be changed to some true timestamp */ //FIXME look at frame_number
248 AVBitStreamFilterContext *bitstream_filters;
249 AVCodec *enc;
250
251 /* video only */
252 int video_resample;
253 AVFrame pict_tmp; /* temporary image for resampling */
254 struct SwsContext *img_resample_ctx; /* for image resampling */
255 int resample_height;
256 int resample_width;
257 int resample_pix_fmt;
258 AVRational frame_rate;
259
260 float frame_aspect_ratio;
261
262 /* forced key frames */
263 int64_t *forced_kf_pts;
264 int forced_kf_count;
265 int forced_kf_index;
266
267 /* audio only */
268 int audio_resample;
269 ReSampleContext *resample; /* for audio resampling */
270 int resample_sample_fmt;
271 int resample_channels;
272 int resample_sample_rate;
273 int reformat_pair;
274 AVAudioConvert *reformat_ctx;
275 AVFifoBuffer *fifo; /* for compression: one audio fifo per codec */
276 FILE *logfile;
277
278 #if CONFIG_AVFILTER
279 AVFilterContext *output_video_filter;
280 AVFilterContext *input_video_filter;
281 AVFilterBufferRef *picref;
282 char *avfilter;
283 AVFilterGraph *graph;
284 #endif
285
286 int sws_flags;
287 AVDictionary *opts;
288 } OutputStream;
289
290 static OutputStream **output_streams_for_file[MAX_FILES] = { NULL };
291 static int nb_output_streams_for_file[MAX_FILES] = { 0 };
292
293 typedef struct InputStream {
294 int file_index;
295 AVStream *st;
296 int discard; /* true if stream data should be discarded */
297 int decoding_needed; /* true if the packets must be decoded in 'raw_fifo' */
298 AVCodec *dec;
299
300 int64_t start; /* time when read started */
301 int64_t next_pts; /* synthetic pts for cases where pkt.pts
302 is not defined */
303 int64_t pts; /* current pts */
304 PtsCorrectionContext pts_ctx;
305 double ts_scale;
306 int is_start; /* is 1 at the start and after a discontinuity */
307 int showed_multi_packet_warning;
308 int is_past_recording_time;
309 AVDictionary *opts;
310 } InputStream;
311
312 typedef struct InputFile {
313 AVFormatContext *ctx;
314 int eof_reached; /* true if eof reached */
315 int ist_index; /* index of first stream in ist_table */
316 int buffer_size; /* current total buffer size */
317 int64_t ts_offset;
318 } InputFile;
319
320 static InputStream *input_streams = NULL;
321 static int nb_input_streams = 0;
322 static InputFile *input_files = NULL;
323 static int nb_input_files = 0;
324
325 #if CONFIG_AVFILTER
326
327 static int configure_video_filters(InputStream *ist, OutputStream *ost)
328 {
329 AVFilterContext *last_filter, *filter;
330 /** filter graph containing all filters including input & output */
331 AVCodecContext *codec = ost->st->codec;
332 AVCodecContext *icodec = ist->st->codec;
333 FFSinkContext ffsink_ctx = { .pix_fmt = codec->pix_fmt };
334 AVRational sample_aspect_ratio;
335 char args[255];
336 int ret;
337
338 ost->graph = avfilter_graph_alloc();
339
340 if (ist->st->sample_aspect_ratio.num){
341 sample_aspect_ratio = ist->st->sample_aspect_ratio;
342 }else
343 sample_aspect_ratio = ist->st->codec->sample_aspect_ratio;
344
345 snprintf(args, 255, "%d:%d:%d:%d:%d:%d:%d", ist->st->codec->width,
346 ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE,
347 sample_aspect_ratio.num, sample_aspect_ratio.den);
348
349 ret = avfilter_graph_create_filter(&ost->input_video_filter, avfilter_get_by_name("buffer"),
350 "src", args, NULL, ost->graph);
351 if (ret < 0)
352 return ret;
353 ret = avfilter_graph_create_filter(&ost->output_video_filter, &ffsink,
354 "out", NULL, &ffsink_ctx, ost->graph);
355 if (ret < 0)
356 return ret;
357 last_filter = ost->input_video_filter;
358
359 if (codec->width != icodec->width || codec->height != icodec->height) {
360 snprintf(args, 255, "%d:%d:flags=0x%X",
361 codec->width,
362 codec->height,
363 ost->sws_flags);
364 if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
365 NULL, args, NULL, ost->graph)) < 0)
366 return ret;
367 if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
368 return ret;
369 last_filter = filter;
370 }
371
372 snprintf(args, sizeof(args), "flags=0x%X", ost->sws_flags);
373 ost->graph->scale_sws_opts = av_strdup(args);
374
375 if (ost->avfilter) {
376 AVFilterInOut *outputs = av_malloc(sizeof(AVFilterInOut));
377 AVFilterInOut *inputs = av_malloc(sizeof(AVFilterInOut));
378
379 outputs->name = av_strdup("in");
380 outputs->filter_ctx = last_filter;
381 outputs->pad_idx = 0;
382 outputs->next = NULL;
383
384 inputs->name = av_strdup("out");
385 inputs->filter_ctx = ost->output_video_filter;
386 inputs->pad_idx = 0;
387 inputs->next = NULL;
388
389 if ((ret = avfilter_graph_parse(ost->graph, ost->avfilter, inputs, outputs, NULL)) < 0)
390 return ret;
391 av_freep(&ost->avfilter);
392 } else {
393 if ((ret = avfilter_link(last_filter, 0, ost->output_video_filter, 0)) < 0)
394 return ret;
395 }
396
397 if ((ret = avfilter_graph_config(ost->graph, NULL)) < 0)
398 return ret;
399
400 codec->width = ost->output_video_filter->inputs[0]->w;
401 codec->height = ost->output_video_filter->inputs[0]->h;
402 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
403 ost->frame_aspect_ratio ? // overriden by the -aspect cli option
404 av_d2q(ost->frame_aspect_ratio*codec->height/codec->width, 255) :
405 ost->output_video_filter->inputs[0]->sample_aspect_ratio;
406
407 return 0;
408 }
409 #endif /* CONFIG_AVFILTER */
410
411 static void term_exit(void)
412 {
413 av_log(NULL, AV_LOG_QUIET, "");
414 }
415
416 static volatile int received_sigterm = 0;
417 static volatile int received_nb_signals = 0;
418
419 static void
420 sigterm_handler(int sig)
421 {
422 received_sigterm = sig;
423 received_nb_signals++;
424 term_exit();
425 }
426
427 static void term_init(void)
428 {
429 signal(SIGINT , sigterm_handler); /* Interrupt (ANSI). */
430 signal(SIGTERM, sigterm_handler); /* Termination (ANSI). */
431 #ifdef SIGXCPU
432 signal(SIGXCPU, sigterm_handler);
433 #endif
434 }
435
436 static int decode_interrupt_cb(void)
437 {
438 return received_nb_signals > 1;
439 }
440
441 static int exit_program(int ret)
442 {
443 int i;
444
445 /* close files */
446 for(i=0;i<nb_output_files;i++) {
447 AVFormatContext *s = output_files[i];
448 if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
449 avio_close(s->pb);
450 avformat_free_context(s);
451 av_free(output_streams_for_file[i]);
452 av_dict_free(&output_opts[i]);
453 }
454 for(i=0;i<nb_input_files;i++) {
455 av_close_input_file(input_files[i].ctx);
456 }
457 for (i = 0; i < nb_input_streams; i++)
458 av_dict_free(&input_streams[i].opts);
459
460 av_free(intra_matrix);
461 av_free(inter_matrix);
462
463 if (vstats_file)
464 fclose(vstats_file);
465 av_free(vstats_filename);
466
467 av_free(streamid_map);
468 av_free(meta_data_maps);
469
470 av_freep(&input_streams);
471 av_freep(&input_files);
472
473 av_free(video_codec_name);
474 av_free(audio_codec_name);
475 av_free(subtitle_codec_name);
476 av_free(data_codec_name);
477
478 uninit_opts();
479 av_free(audio_buf);
480 av_free(audio_out);
481 allocated_audio_buf_size= allocated_audio_out_size= 0;
482 av_free(samples);
483
484 #if CONFIG_AVFILTER
485 avfilter_uninit();
486 #endif
487
488 if (received_sigterm) {
489 fprintf(stderr,
490 "Received signal %d: terminating.\n",
491 (int) received_sigterm);
492 exit (255);
493 }
494
495 exit(ret); /* not all OS-es handle main() return value */
496 return ret;
497 }
498
499 static void assert_avoptions(AVDictionary *m)
500 {
501 AVDictionaryEntry *t;
502 if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
503 av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
504 exit_program(1);
505 }
506 }
507
508 static void assert_codec_experimental(AVCodecContext *c, int encoder)
509 {
510 const char *codec_string = encoder ? "encoder" : "decoder";
511 AVCodec *codec;
512 if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
513 c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
514 av_log(NULL, AV_LOG_ERROR, "%s '%s' is experimental and might produce bad "
515 "results.\nAdd '-strict experimental' if you want to use it.\n",
516 codec_string, c->codec->name);
517 codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
518 if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
519 av_log(NULL, AV_LOG_ERROR, "Or use the non experimental %s '%s'.\n",
520 codec_string, codec->name);
521 exit_program(1);
522 }
523 }
524
525 /* similar to ff_dynarray_add() and av_fast_realloc() */
526 static void *grow_array(void *array, int elem_size, int *size, int new_size)
527 {
528 if (new_size >= INT_MAX / elem_size) {
529 fprintf(stderr, "Array too big.\n");
530 exit_program(1);
531 }
532 if (*size < new_size) {
533 uint8_t *tmp = av_realloc(array, new_size*elem_size);
534 if (!tmp) {
535 fprintf(stderr, "Could not alloc buffer.\n");
536 exit_program(1);
537 }
538 memset(tmp + *size*elem_size, 0, (new_size-*size) * elem_size);
539 *size = new_size;
540 return tmp;
541 }
542 return array;
543 }
544
545 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
546 {
547 if(codec && codec->sample_fmts){
548 const enum AVSampleFormat *p= codec->sample_fmts;
549 for(; *p!=-1; p++){
550 if(*p == st->codec->sample_fmt)
551 break;
552 }
553 if (*p == -1) {
554 av_log(NULL, AV_LOG_WARNING,
555 "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
556 av_get_sample_fmt_name(st->codec->sample_fmt),
557 codec->name,
558 av_get_sample_fmt_name(codec->sample_fmts[0]));
559 st->codec->sample_fmt = codec->sample_fmts[0];
560 }
561 }
562 }
563
564 /**
565 * Update the requested input sample format based on the output sample format.
566 * This is currently only used to request float output from decoders which
567 * support multiple sample formats, one of which is AV_SAMPLE_FMT_FLT.
568 * Ideally this will be removed in the future when decoders do not do format
569 * conversion and only output in their native format.
570 */
571 static void update_sample_fmt(AVCodecContext *dec, AVCodec *dec_codec,
572 AVCodecContext *enc)
573 {
574 /* if sample formats match or a decoder sample format has already been
575 requested, just return */
576 if (enc->sample_fmt == dec->sample_fmt ||
577 dec->request_sample_fmt > AV_SAMPLE_FMT_NONE)
578 return;
579
580 /* if decoder supports more than one output format */
581 if (dec_codec && dec_codec->sample_fmts &&
582 dec_codec->sample_fmts[0] != AV_SAMPLE_FMT_NONE &&
583 dec_codec->sample_fmts[1] != AV_SAMPLE_FMT_NONE) {
584 const enum AVSampleFormat *p;
585 int min_dec = -1, min_inc = -1;
586
587 /* find a matching sample format in the encoder */
588 for (p = dec_codec->sample_fmts; *p != AV_SAMPLE_FMT_NONE; p++) {
589 if (*p == enc->sample_fmt) {
590 dec->request_sample_fmt = *p;
591 return;
592 } else if (*p > enc->sample_fmt) {
593 min_inc = FFMIN(min_inc, *p - enc->sample_fmt);
594 } else
595 min_dec = FFMIN(min_dec, enc->sample_fmt - *p);
596 }
597
598 /* if none match, provide the one that matches quality closest */
599 dec->request_sample_fmt = min_inc > 0 ? enc->sample_fmt + min_inc :
600 enc->sample_fmt - min_dec;
601 }
602 }
603
604 static void choose_sample_rate(AVStream *st, AVCodec *codec)
605 {
606 if(codec && codec->supported_samplerates){
607 const int *p= codec->supported_samplerates;
608 int best=0;
609 int best_dist=INT_MAX;
610 for(; *p; p++){
611 int dist= abs(st->codec->sample_rate - *p);
612 if(dist < best_dist){
613 best_dist= dist;
614 best= *p;
615 }
616 }
617 if(best_dist){
618 av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
619 }
620 st->codec->sample_rate= best;
621 }
622 }
623
624 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
625 {
626 if(codec && codec->pix_fmts){
627 const enum PixelFormat *p= codec->pix_fmts;
628 if(st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL){
629 if(st->codec->codec_id==CODEC_ID_MJPEG){
630 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE};
631 }else if(st->codec->codec_id==CODEC_ID_LJPEG){
632 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};
633 }
634 }
635 for(; *p!=-1; p++){
636 if(*p == st->codec->pix_fmt)
637 break;
638 }
639 if (*p == -1) {
640 if(st->codec->pix_fmt != PIX_FMT_NONE)
641 av_log(NULL, AV_LOG_WARNING,
642 "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
643 av_pix_fmt_descriptors[st->codec->pix_fmt].name,
644 codec->name,
645 av_pix_fmt_descriptors[codec->pix_fmts[0]].name);
646 st->codec->pix_fmt = codec->pix_fmts[0];
647 }
648 }
649 }
650
651 static OutputStream *new_output_stream(AVFormatContext *oc, int file_idx, AVCodec *codec)
652 {
653 OutputStream *ost;
654 AVStream *st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
655 int idx = oc->nb_streams - 1;
656
657 if (!st) {
658 av_log(NULL, AV_LOG_ERROR, "Could not alloc stream.\n");
659 exit_program(1);
660 }
661
662 output_streams_for_file[file_idx] =
663 grow_array(output_streams_for_file[file_idx],
664 sizeof(*output_streams_for_file[file_idx]),
665 &nb_output_streams_for_file[file_idx],
666 oc->nb_streams);
667 ost = output_streams_for_file[file_idx][idx] =
668 av_mallocz(sizeof(OutputStream));
669 if (!ost) {
670 fprintf(stderr, "Could not alloc output stream\n");
671 exit_program(1);
672 }
673 ost->file_index = file_idx;
674 ost->index = idx;
675 ost->st = st;
676 ost->enc = codec;
677 if (codec) {
678 st->codec->codec_type = codec->type;
679 ost->opts = filter_codec_opts(codec_opts, codec->id, oc, st);
680 }
681
682 avcodec_get_context_defaults3(st->codec, codec);
683
684 ost->sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
685 return ost;
686 }
687
688 static int read_avserver_streams(AVFormatContext *s, const char *filename)
689 {
690 int i, err;
691 AVFormatContext *ic = NULL;
692 int nopts = 0;
693
694 err = avformat_open_input(&ic, filename, NULL, NULL);
695 if (err < 0)
696 return err;
697 /* copy stream format */
698 for(i=0;i<ic->nb_streams;i++) {
699 AVStream *st;
700 OutputStream *ost;
701 AVCodec *codec;
702
703 codec = avcodec_find_encoder(ic->streams[i]->codec->codec_id);
704 ost = new_output_stream(s, nb_output_files, codec);
705 st = ost->st;
706
707 // FIXME: a more elegant solution is needed
708 memcpy(st, ic->streams[i], sizeof(AVStream));
709 st->info = NULL;
710 avcodec_copy_context(st->codec, ic->streams[i]->codec);
711
712 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
713 if (audio_stream_copy) {
714 st->stream_copy = 1;
715 } else
716 choose_sample_fmt(st, codec);
717 } else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
718 if (video_stream_copy) {
719 st->stream_copy = 1;
720 } else
721 choose_pixel_fmt(st, codec);
722 }
723
724 if(st->codec->flags & CODEC_FLAG_BITEXACT)
725 nopts = 1;
726 }
727
728 av_close_input_file(ic);
729 return 0;
730 }
731
732 static double
733 get_sync_ipts(const OutputStream *ost)
734 {
735 const InputStream *ist = ost->sync_ist;
736 return (double)(ist->pts - start_time)/AV_TIME_BASE;
737 }
738
739 static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc){
740 int ret;
741
742 while(bsfc){
743 AVPacket new_pkt= *pkt;
744 int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
745 &new_pkt.data, &new_pkt.size,
746 pkt->data, pkt->size,
747 pkt->flags & AV_PKT_FLAG_KEY);
748 if(a>0){
749 av_free_packet(pkt);
750 new_pkt.destruct= av_destruct_packet;
751 } else if(a<0){
752 fprintf(stderr, "%s failed for stream %d, codec %s",
753 bsfc->filter->name, pkt->stream_index,
754 avctx->codec ? avctx->codec->name : "copy");
755 print_error("", a);
756 if (exit_on_error)
757 exit_program(1);
758 }
759 *pkt= new_pkt;
760
761 bsfc= bsfc->next;
762 }
763
764 ret= av_interleaved_write_frame(s, pkt);
765 if(ret < 0){
766 print_error("av_interleaved_write_frame()", ret);
767 exit_program(1);
768 }
769 }
770
771 #define MAX_AUDIO_PACKET_SIZE (128 * 1024)
772
773 static void do_audio_out(AVFormatContext *s,
774 OutputStream *ost,
775 InputStream *ist,
776 unsigned char *buf, int size)
777 {
778 uint8_t *buftmp;
779 int64_t audio_out_size, audio_buf_size;
780 int64_t allocated_for_size= size;
781
782 int size_out, frame_bytes, ret, resample_changed;
783 AVCodecContext *enc= ost->st->codec;
784 AVCodecContext *dec= ist->st->codec;
785 int osize = av_get_bytes_per_sample(enc->sample_fmt);
786 int isize = av_get_bytes_per_sample(dec->sample_fmt);
787 const int coded_bps = av_get_bits_per_sample(enc->codec->id);
788
789 need_realloc:
790 audio_buf_size= (allocated_for_size + isize*dec->channels - 1) / (isize*dec->channels);
791 audio_buf_size= (audio_buf_size*enc->sample_rate + dec->sample_rate) / dec->sample_rate;
792 audio_buf_size= audio_buf_size*2 + 10000; //safety factors for the deprecated resampling API
793 audio_buf_size= FFMAX(audio_buf_size, enc->frame_size);
794 audio_buf_size*= osize*enc->channels;
795
796 audio_out_size= FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
797 if(coded_bps > 8*osize)
798 audio_out_size= audio_out_size * coded_bps / (8*osize);
799 audio_out_size += FF_MIN_BUFFER_SIZE;
800
801 if(audio_out_size > INT_MAX || audio_buf_size > INT_MAX){
802 fprintf(stderr, "Buffer sizes too large\n");
803 exit_program(1);
804 }
805
806 av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
807 av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
808 if (!audio_buf || !audio_out){
809 fprintf(stderr, "Out of memory in do_audio_out\n");
810 exit_program(1);
811 }
812
813 if (enc->channels != dec->channels || enc->sample_rate != dec->sample_rate)
814 ost->audio_resample = 1;
815
816 resample_changed = ost->resample_sample_fmt != dec->sample_fmt ||
817 ost->resample_channels != dec->channels ||
818 ost->resample_sample_rate != dec->sample_rate;
819
820 if ((ost->audio_resample && !ost->resample) || resample_changed) {
821 if (resample_changed) {
822 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",
823 ist->file_index, ist->st->index,
824 ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
825 dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
826 ost->resample_sample_fmt = dec->sample_fmt;
827 ost->resample_channels = dec->channels;
828 ost->resample_sample_rate = dec->sample_rate;
829 if (ost->resample)
830 audio_resample_close(ost->resample);
831 }
832 /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
833 if (audio_sync_method <= 1 &&
834 ost->resample_sample_fmt == enc->sample_fmt &&
835 ost->resample_channels == enc->channels &&
836 ost->resample_sample_rate == enc->sample_rate) {
837 ost->resample = NULL;
838 ost->audio_resample = 0;
839 } else if (ost->audio_resample) {
840 if (dec->sample_fmt != AV_SAMPLE_FMT_S16)
841 fprintf(stderr, "Warning, using s16 intermediate sample format for resampling\n");
842 ost->resample = av_audio_resample_init(enc->channels, dec->channels,
843 enc->sample_rate, dec->sample_rate,
844 enc->sample_fmt, dec->sample_fmt,
845 16, 10, 0, 0.8);
846 if (!ost->resample) {
847 fprintf(stderr, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
848 dec->channels, dec->sample_rate,
849 enc->channels, enc->sample_rate);
850 exit_program(1);
851 }
852 }
853 }
854
855 #define MAKE_SFMT_PAIR(a,b) ((a)+AV_SAMPLE_FMT_NB*(b))
856 if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt &&
857 MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt)!=ost->reformat_pair) {
858 if (ost->reformat_ctx)
859 av_audio_convert_free(ost->reformat_ctx);
860 ost->reformat_ctx = av_audio_convert_alloc(enc->sample_fmt, 1,
861 dec->sample_fmt, 1, NULL, 0);
862 if (!ost->reformat_ctx) {
863 fprintf(stderr, "Cannot convert %s sample format to %s sample format\n",
864 av_get_sample_fmt_name(dec->sample_fmt),
865 av_get_sample_fmt_name(enc->sample_fmt));
866 exit_program(1);
867 }
868 ost->reformat_pair=MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt);
869 }
870
871 if(audio_sync_method){
872 double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
873 - av_fifo_size(ost->fifo)/(enc->channels * 2);
874 double idelta= delta*dec->sample_rate / enc->sample_rate;
875 int byte_delta= ((int)idelta)*2*dec->channels;
876
877 //FIXME resample delay
878 if(fabs(delta) > 50){
879 if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
880 if(byte_delta < 0){
881 byte_delta= FFMAX(byte_delta, -size);
882 size += byte_delta;
883 buf -= byte_delta;
884 if(verbose > 2)
885 fprintf(stderr, "discarding %d audio samples\n", (int)-delta);
886 if(!size)
887 return;
888 ist->is_start=0;
889 }else{
890 static uint8_t *input_tmp= NULL;
891 input_tmp= av_realloc(input_tmp, byte_delta + size);
892
893 if(byte_delta > allocated_for_size - size){
894 allocated_for_size= byte_delta + (int64_t)size;
895 goto need_realloc;
896 }
897 ist->is_start=0;
898
899 memset(input_tmp, 0, byte_delta);
900 memcpy(input_tmp + byte_delta, buf, size);
901 buf= input_tmp;
902 size += byte_delta;
903 if(verbose > 2)
904 fprintf(stderr, "adding %d audio samples of silence\n", (int)delta);
905 }
906 }else if(audio_sync_method>1){
907 int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
908 av_assert0(ost->audio_resample);
909 if(verbose > 2)
910 fprintf(stderr, "compensating audio timestamp drift:%f compensation:%d in:%d\n", delta, comp, enc->sample_rate);
911 // 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));
912 av_resample_compensate(*(struct AVResampleContext**)ost->resample, comp, enc->sample_rate);
913 }
914 }
915 }else
916 ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
917 - av_fifo_size(ost->fifo)/(enc->channels * 2); //FIXME wrong
918
919 if (ost->audio_resample) {
920 buftmp = audio_buf;
921 size_out = audio_resample(ost->resample,
922 (short *)buftmp, (short *)buf,
923 size / (dec->channels * isize));
924 size_out = size_out * enc->channels * osize;
925 } else {
926 buftmp = buf;
927 size_out = size;
928 }
929
930 if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt) {
931 const void *ibuf[6]= {buftmp};
932 void *obuf[6]= {audio_buf};
933 int istride[6]= {isize};
934 int ostride[6]= {osize};
935 int len= size_out/istride[0];
936 if (av_audio_convert(ost->reformat_ctx, obuf, ostride, ibuf, istride, len)<0) {
937 printf("av_audio_convert() failed\n");
938 if (exit_on_error)
939 exit_program(1);
940 return;
941 }
942 buftmp = audio_buf;
943 size_out = len*osize;
944 }
945
946 /* now encode as many frames as possible */
947 if (enc->frame_size > 1) {
948 /* output resampled raw samples */
949 if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
950 fprintf(stderr, "av_fifo_realloc2() failed\n");
951 exit_program(1);
952 }
953 av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
954
955 frame_bytes = enc->frame_size * osize * enc->channels;
956
957 while (av_fifo_size(ost->fifo) >= frame_bytes) {
958 AVPacket pkt;
959 av_init_packet(&pkt);
960
961 av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
962
963 //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
964
965 ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
966 (short *)audio_buf);
967 if (ret < 0) {
968 fprintf(stderr, "Audio encoding failed\n");
969 exit_program(1);
970 }
971 audio_size += ret;
972 pkt.stream_index= ost->index;
973 pkt.data= audio_out;
974 pkt.size= ret;
975 if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
976 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
977 pkt.flags |= AV_PKT_FLAG_KEY;
978 write_frame(s, &pkt, enc, ost->bitstream_filters);
979
980 ost->sync_opts += enc->frame_size;
981 }
982 } else {
983 AVPacket pkt;
984 av_init_packet(&pkt);
985
986 ost->sync_opts += size_out / (osize * enc->channels);
987
988 /* output a pcm frame */
989 /* determine the size of the coded buffer */
990 size_out /= osize;
991 if (coded_bps)
992 size_out = size_out*coded_bps/8;
993
994 if(size_out > audio_out_size){
995 fprintf(stderr, "Internal error, buffer size too small\n");
996 exit_program(1);
997 }
998
999 //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
1000 ret = avcodec_encode_audio(enc, audio_out, size_out,
1001 (short *)buftmp);
1002 if (ret < 0) {
1003 fprintf(stderr, "Audio encoding failed\n");
1004 exit_program(1);
1005 }
1006 audio_size += ret;
1007 pkt.stream_index= ost->index;
1008 pkt.data= audio_out;
1009 pkt.size= ret;
1010 if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1011 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1012 pkt.flags |= AV_PKT_FLAG_KEY;
1013 write_frame(s, &pkt, enc, ost->bitstream_filters);
1014 }
1015 }
1016
1017 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
1018 {
1019 AVCodecContext *dec;
1020 AVPicture *picture2;
1021 AVPicture picture_tmp;
1022 uint8_t *buf = 0;
1023
1024 dec = ist->st->codec;
1025
1026 /* deinterlace : must be done before any resize */
1027 if (do_deinterlace) {
1028 int size;
1029
1030 /* create temporary picture */
1031 size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1032 buf = av_malloc(size);
1033 if (!buf)
1034 return;
1035
1036 picture2 = &picture_tmp;
1037 avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1038
1039 if(avpicture_deinterlace(picture2, picture,
1040 dec->pix_fmt, dec->width, dec->height) < 0) {
1041 /* if error, do not deinterlace */
1042 fprintf(stderr, "Deinterlacing failed\n");
1043 av_free(buf);
1044 buf = NULL;
1045 picture2 = picture;
1046 }
1047 } else {
1048 picture2 = picture;
1049 }
1050
1051 if (picture != picture2)
1052 *picture = *picture2;
1053 *bufp = buf;
1054 }
1055
1056 /* we begin to correct av delay at this threshold */
1057 #define AV_DELAY_MAX 0.100
1058
1059 static void do_subtitle_out(AVFormatContext *s,
1060 OutputStream *ost,
1061 InputStream *ist,
1062 AVSubtitle *sub,
1063 int64_t pts)
1064 {
1065 static uint8_t *subtitle_out = NULL;
1066 int subtitle_out_max_size = 1024 * 1024;
1067 int subtitle_out_size, nb, i;
1068 AVCodecContext *enc;
1069 AVPacket pkt;
1070
1071 if (pts == AV_NOPTS_VALUE) {
1072 fprintf(stderr, "Subtitle packets must have a pts\n");
1073 if (exit_on_error)
1074 exit_program(1);
1075 return;
1076 }
1077
1078 enc = ost->st->codec;
1079
1080 if (!subtitle_out) {
1081 subtitle_out = av_malloc(subtitle_out_max_size);
1082 }
1083
1084 /* Note: DVB subtitle need one packet to draw them and one other
1085 packet to clear them */
1086 /* XXX: signal it in the codec context ? */
1087 if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1088 nb = 2;
1089 else
1090 nb = 1;
1091
1092 for(i = 0; i < nb; i++) {
1093 sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1094 // start_display_time is required to be 0
1095 sub->pts += av_rescale_q(sub->start_display_time, (AVRational){1, 1000}, AV_TIME_BASE_Q);
1096 sub->end_display_time -= sub->start_display_time;
1097 sub->start_display_time = 0;
1098 subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1099 subtitle_out_max_size, sub);
1100 if (subtitle_out_size < 0) {
1101 fprintf(stderr, "Subtitle encoding failed\n");
1102 exit_program(1);
1103 }
1104
1105 av_init_packet(&pkt);
1106 pkt.stream_index = ost->index;
1107 pkt.data = subtitle_out;
1108 pkt.size = subtitle_out_size;
1109 pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1110 if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1111 /* XXX: the pts correction is handled here. Maybe handling
1112 it in the codec would be better */
1113 if (i == 0)
1114 pkt.pts += 90 * sub->start_display_time;
1115 else
1116 pkt.pts += 90 * sub->end_display_time;
1117 }
1118 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1119 }
1120 }
1121
1122 static int bit_buffer_size= 1024*256;
1123 static uint8_t *bit_buffer= NULL;
1124
1125 static void do_video_out(AVFormatContext *s,
1126 OutputStream *ost,
1127 InputStream *ist,
1128 AVFrame *in_picture,
1129 int *frame_size, float quality)
1130 {
1131 int nb_frames, i, ret, resample_changed;
1132 AVFrame *final_picture, *formatted_picture;
1133 AVCodecContext *enc, *dec;
1134 double sync_ipts;
1135
1136 enc = ost->st->codec;
1137 dec = ist->st->codec;
1138
1139 sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1140
1141 /* by default, we output a single frame */
1142 nb_frames = 1;
1143
1144 *frame_size = 0;
1145
1146 if(video_sync_method){
1147 double vdelta = sync_ipts - ost->sync_opts;
1148 //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1149 if (vdelta < -1.1)
1150 nb_frames = 0;
1151 else if (video_sync_method == 2 || (video_sync_method<0 && (s->oformat->flags & AVFMT_VARIABLE_FPS))){
1152 if(vdelta<=-0.6){
1153 nb_frames=0;
1154 }else if(vdelta>0.6)
1155 ost->sync_opts= lrintf(sync_ipts);
1156 }else if (vdelta > 1.1)
1157 nb_frames = lrintf(vdelta);
1158 //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);
1159 if (nb_frames == 0){
1160 ++nb_frames_drop;
1161 if (verbose>2)
1162 fprintf(stderr, "*** drop!\n");
1163 }else if (nb_frames > 1) {
1164 nb_frames_dup += nb_frames - 1;
1165 if (verbose>2)
1166 fprintf(stderr, "*** %d dup!\n", nb_frames-1);
1167 }
1168 }else
1169 ost->sync_opts= lrintf(sync_ipts);
1170
1171 nb_frames= FFMIN(nb_frames, max_frames[AVMEDIA_TYPE_VIDEO] - ost->frame_number);
1172 if (nb_frames <= 0)
1173 return;
1174
1175 formatted_picture = in_picture;
1176 final_picture = formatted_picture;
1177
1178 resample_changed = ost->resample_width != dec->width ||
1179 ost->resample_height != dec->height ||
1180 ost->resample_pix_fmt != dec->pix_fmt;
1181
1182 if (resample_changed) {
1183 av_log(NULL, AV_LOG_INFO,
1184 "Input stream #%d.%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1185 ist->file_index, ist->st->index,
1186 ost->resample_width, ost->resample_height, av_get_pix_fmt_name(ost->resample_pix_fmt),
1187 dec->width , dec->height , av_get_pix_fmt_name(dec->pix_fmt));
1188 if(!ost->video_resample)
1189 exit_program(1);
1190 }
1191
1192 #if !CONFIG_AVFILTER
1193 if (ost->video_resample) {
1194 final_picture = &ost->pict_tmp;
1195 if (resample_changed) {
1196 /* initialize a new scaler context */
1197 sws_freeContext(ost->img_resample_ctx);
1198 ost->img_resample_ctx = sws_getContext(
1199 ist->st->codec->width,
1200 ist->st->codec->height,
1201 ist->st->codec->pix_fmt,
1202 ost->st->codec->width,
1203 ost->st->codec->height,
1204 ost->st->codec->pix_fmt,
1205 ost->sws_flags, NULL, NULL, NULL);
1206 if (ost->img_resample_ctx == NULL) {
1207 fprintf(stderr, "Cannot get resampling context\n");
1208 exit_program(1);
1209 }
1210 }
1211 sws_scale(ost->img_resample_ctx, formatted_picture->data, formatted_picture->linesize,
1212 0, ost->resample_height, final_picture->data, final_picture->linesize);
1213 }
1214 #else
1215 if (resample_changed) {
1216 avfilter_graph_free(&ost->graph);
1217 if (configure_video_filters(ist, ost)) {
1218 fprintf(stderr, "Error reinitialising filters!\n");
1219 exit_program(1);
1220 }
1221 }
1222 #endif
1223 if (resample_changed) {
1224 ost->resample_width = dec->width;
1225 ost->resample_height = dec->height;
1226 ost->resample_pix_fmt = dec->pix_fmt;
1227 }
1228
1229 /* duplicates frame if needed */
1230 for(i=0;i<nb_frames;i++) {
1231 AVPacket pkt;
1232 av_init_packet(&pkt);
1233 pkt.stream_index= ost->index;
1234
1235 if (s->oformat->flags & AVFMT_RAWPICTURE) {
1236 /* raw pictures are written as AVPicture structure to
1237 avoid any copies. We support temorarily the older
1238 method. */
1239 AVFrame* old_frame = enc->coded_frame;
1240 enc->coded_frame = dec->coded_frame; //FIXME/XXX remove this hack
1241 pkt.data= (uint8_t *)final_picture;
1242 pkt.size= sizeof(AVPicture);
1243 pkt.pts= av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1244 pkt.flags |= AV_PKT_FLAG_KEY;
1245
1246 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1247 enc->coded_frame = old_frame;
1248 } else {
1249 AVFrame big_picture;
1250
1251 big_picture= *final_picture;
1252 /* better than nothing: use input picture interlaced
1253 settings */
1254 big_picture.interlaced_frame = in_picture->interlaced_frame;
1255 if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1256 if(top_field_first == -1)
1257 big_picture.top_field_first = in_picture->top_field_first;
1258 else
1259 big_picture.top_field_first = top_field_first;
1260 }
1261
1262 /* handles sameq here. This is not correct because it may
1263 not be a global option */
1264 big_picture.quality = quality;
1265 if(!me_threshold)
1266 big_picture.pict_type = 0;
1267 // big_picture.pts = AV_NOPTS_VALUE;
1268 big_picture.pts= ost->sync_opts;
1269 // big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1270 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1271 if (ost->forced_kf_index < ost->forced_kf_count &&
1272 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1273 big_picture.pict_type = AV_PICTURE_TYPE_I;
1274 ost->forced_kf_index++;
1275 }
1276 ret = avcodec_encode_video(enc,
1277 bit_buffer, bit_buffer_size,
1278 &big_picture);
1279 if (ret < 0) {
1280 fprintf(stderr, "Video encoding failed\n");
1281 exit_program(1);
1282 }
1283
1284 if(ret>0){
1285 pkt.data= bit_buffer;
1286 pkt.size= ret;
1287 if(enc->coded_frame->pts != AV_NOPTS_VALUE)
1288 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1289 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1290 pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1291 pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1292
1293 if(enc->coded_frame->key_frame)
1294 pkt.flags |= AV_PKT_FLAG_KEY;
1295 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1296 *frame_size = ret;
1297 video_size += ret;
1298 //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1299 // enc->frame_number-1, ret, enc->pict_type);
1300 /* if two pass, output log */
1301 if (ost->logfile && enc->stats_out) {
1302 fprintf(ost->logfile, "%s", enc->stats_out);
1303 }
1304 }
1305 }
1306 ost->sync_opts++;
1307 ost->frame_number++;
1308 }
1309 }
1310
1311 static double psnr(double d){
1312 return -10.0*log(d)/log(10.0);
1313 }
1314
1315 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1316 int frame_size)
1317 {
1318 AVCodecContext *enc;
1319 int frame_number;
1320 double ti1, bitrate, avg_bitrate;
1321
1322 /* this is executed just the first time do_video_stats is called */
1323 if (!vstats_file) {
1324 vstats_file = fopen(vstats_filename, "w");
1325 if (!vstats_file) {
1326 perror("fopen");
1327 exit_program(1);
1328 }
1329 }
1330
1331 enc = ost->st->codec;
1332 if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1333 frame_number = ost->frame_number;
1334 fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1335 if (enc->flags&CODEC_FLAG_PSNR)
1336 fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
1337
1338 fprintf(vstats_file,"f_size= %6d ", frame_size);
1339 /* compute pts value */
1340 ti1 = ost->sync_opts * av_q2d(enc->time_base);
1341 if (ti1 < 0.01)
1342 ti1 = 0.01;
1343
1344 bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1345 avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1346 fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1347 (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1348 fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1349 }
1350 }
1351
1352 static void print_report(AVFormatContext **output_files,
1353 OutputStream **ost_table, int nb_ostreams,
1354 int is_last_report)
1355 {
1356 char buf[1024];
1357 OutputStream *ost;
1358 AVFormatContext *oc;
1359 int64_t total_size;
1360 AVCodecContext *enc;
1361 int frame_number, vid, i;
1362 double bitrate, ti1, pts;
1363 static int64_t last_time = -1;
1364 static int qp_histogram[52];
1365
1366 if (!is_last_report) {
1367 int64_t cur_time;
1368 /* display the report every 0.5 seconds */
1369 cur_time = av_gettime();
1370 if (last_time == -1) {
1371 last_time = cur_time;
1372 return;
1373 }
1374 if ((cur_time - last_time) < 500000)
1375 return;
1376 last_time = cur_time;
1377 }
1378
1379
1380 oc = output_files[0];
1381
1382 total_size = avio_size(oc->pb);
1383 if(total_size<0) // FIXME improve avio_size() so it works with non seekable output too
1384 total_size= avio_tell(oc->pb);
1385
1386 buf[0] = '\0';
1387 ti1 = 1e10;
1388 vid = 0;
1389 for(i=0;i<nb_ostreams;i++) {
1390 float q = -1;
1391 ost = ost_table[i];
1392 enc = ost->st->codec;
1393 if (!ost->st->stream_copy && enc->coded_frame)
1394 q = enc->coded_frame->quality/(float)FF_QP2LAMBDA;
1395 if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1396 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1397 }
1398 if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1399 float t = (av_gettime()-timer_start) / 1000000.0;
1400
1401 frame_number = ost->frame_number;
1402 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1403 frame_number, (t>1)?(int)(frame_number/t+0.5) : 0, q);
1404 if(is_last_report)
1405 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1406 if(qp_hist){
1407 int j;
1408 int qp = lrintf(q);
1409 if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
1410 qp_histogram[qp]++;
1411 for(j=0; j<32; j++)
1412 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
1413 }
1414 if (enc->flags&CODEC_FLAG_PSNR){
1415 int j;
1416 double error, error_sum=0;
1417 double scale, scale_sum=0;
1418 char type[3]= {'Y','U','V'};
1419 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1420 for(j=0; j<3; j++){
1421 if(is_last_report){
1422 error= enc->error[j];
1423 scale= enc->width*enc->height*255.0*255.0*frame_number;
1424 }else{
1425 error= enc->coded_frame->error[j];
1426 scale= enc->width*enc->height*255.0*255.0;
1427 }
1428 if(j) scale/=4;
1429 error_sum += error;
1430 scale_sum += scale;
1431 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
1432 }
1433 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
1434 }
1435 vid = 1;
1436 }
1437 /* compute min output value */
1438 pts = (double)ost->st->pts.val * av_q2d(ost->st->time_base);
1439 if ((pts < ti1) && (pts > 0))
1440 ti1 = pts;
1441 }
1442 if (ti1 < 0.01)
1443 ti1 = 0.01;
1444
1445 if (verbose > 0 || is_last_report) {
1446 bitrate = (double)(total_size * 8) / ti1 / 1000.0;
1447
1448 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1449 "size=%8.0fkB time=%0.2f bitrate=%6.1fkbits/s",
1450 (double)total_size / 1024, ti1, bitrate);
1451
1452 if (nb_frames_dup || nb_frames_drop)
1453 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1454 nb_frames_dup, nb_frames_drop);
1455
1456 if (verbose >= 0)
1457 fprintf(stderr, "%s \r", buf);
1458
1459 fflush(stderr);
1460 }
1461
1462 if (is_last_report && verbose >= 0){
1463 int64_t raw= audio_size + video_size + extra_size;
1464 fprintf(stderr, "\n");
1465 fprintf(stderr, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1466 video_size/1024.0,
1467 audio_size/1024.0,
1468 extra_size/1024.0,
1469 100.0*(total_size - raw)/raw
1470 );
1471 }
1472 }
1473
1474 static void generate_silence(uint8_t* buf, enum AVSampleFormat sample_fmt, size_t size)
1475 {
1476 int fill_char = 0x00;
1477 if (sample_fmt == AV_SAMPLE_FMT_U8)
1478 fill_char = 0x80;
1479 memset(buf, fill_char, size);
1480 }
1481
1482 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1483 static int output_packet(InputStream *ist, int ist_index,
1484 OutputStream **ost_table, int nb_ostreams,
1485 const AVPacket *pkt)
1486 {
1487 AVFormatContext *os;
1488 OutputStream *ost;
1489 int ret, i;
1490 int got_output;
1491 AVFrame picture;
1492 void *buffer_to_free = NULL;
1493 static unsigned int samples_size= 0;
1494 AVSubtitle subtitle, *subtitle_to_free;
1495 int64_t pkt_pts = AV_NOPTS_VALUE;
1496 #if CONFIG_AVFILTER
1497 int frame_available;
1498 #endif
1499 float quality;
1500
1501 AVPacket avpkt;
1502 int bps = av_get_bytes_per_sample(ist->st->codec->sample_fmt);
1503
1504 if(ist->next_pts == AV_NOPTS_VALUE)
1505 ist->next_pts= ist->pts;
1506
1507 if (pkt == NULL) {
1508 /* EOF handling */
1509 av_init_packet(&avpkt);
1510 avpkt.data = NULL;
1511 avpkt.size = 0;
1512 goto handle_eof;
1513 } else {
1514 avpkt = *pkt;
1515 }
1516
1517 if(pkt->dts != AV_NOPTS_VALUE)
1518 ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1519 if(pkt->pts != AV_NOPTS_VALUE)
1520 pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1521
1522 //while we have more to decode or while the decoder did output something on EOF
1523 while (avpkt.size > 0 || (!pkt && got_output)) {
1524 uint8_t *data_buf, *decoded_data_buf;
1525 int data_size, decoded_data_size;
1526 handle_eof:
1527 ist->pts= ist->next_pts;
1528
1529 if(avpkt.size && avpkt.size != pkt->size &&
1530 ((!ist->showed_multi_packet_warning && verbose>0) || verbose>1)){
1531 fprintf(stderr, "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1532 ist->showed_multi_packet_warning=1;
1533 }
1534
1535 /* decode the packet if needed */
1536 decoded_data_buf = NULL; /* fail safe */
1537 decoded_data_size= 0;
1538 data_buf = avpkt.data;
1539 data_size = avpkt.size;
1540 subtitle_to_free = NULL;
1541 if (ist->decoding_needed) {
1542 switch(ist->st->codec->codec_type) {
1543 case AVMEDIA_TYPE_AUDIO:{
1544 if(pkt && samples_size < FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE)) {
1545 samples_size = FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE);
1546 av_free(samples);
1547 samples= av_malloc(samples_size);
1548 }
1549 decoded_data_size= samples_size;
1550 /* XXX: could avoid copy if PCM 16 bits with same
1551 endianness as CPU */
1552 ret = avcodec_decode_audio3(ist->st->codec, samples, &decoded_data_size,
1553 &avpkt);
1554 if (ret < 0)
1555 return ret;
1556 avpkt.data += ret;
1557 avpkt.size -= ret;
1558 data_size = ret;
1559 got_output = decoded_data_size > 0;
1560 /* Some bug in mpeg audio decoder gives */
1561 /* decoded_data_size < 0, it seems they are overflows */
1562 if (!got_output) {
1563 /* no audio frame */
1564 continue;
1565 }
1566 decoded_data_buf = (uint8_t *)samples;
1567 ist->next_pts += ((int64_t)AV_TIME_BASE/bps * decoded_data_size) /
1568 (ist->st->codec->sample_rate * ist->st->codec->channels);
1569 break;}
1570 case AVMEDIA_TYPE_VIDEO:
1571 decoded_data_size = (ist->st->codec->width * ist->st->codec->height * 3) / 2;
1572 /* XXX: allocate picture correctly */
1573 avcodec_get_frame_defaults(&picture);
1574 avpkt.pts = pkt_pts;
1575 avpkt.dts = ist->pts;
1576 pkt_pts = AV_NOPTS_VALUE;
1577
1578 ret = avcodec_decode_video2(ist->st->codec,
1579 &picture, &got_output, &avpkt);
1580 quality = same_quality ? picture.quality : 0;
1581 if (ret < 0)
1582 return ret;
1583 if (!got_output) {
1584 /* no picture yet */
1585 goto discard_packet;
1586 }
1587 ist->next_pts = ist->pts = guess_correct_pts(&ist->pts_ctx, picture.pkt_pts, picture.pkt_dts);
1588 if (ist->st->codec->time_base.num != 0) {
1589 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1590 ist->next_pts += ((int64_t)AV_TIME_BASE *
1591 ist->st->codec->time_base.num * ticks) /
1592 ist->st->codec->time_base.den;
1593 }
1594 avpkt.size = 0;
1595 buffer_to_free = NULL;
1596 pre_process_video_frame(ist, (AVPicture *)&picture, &buffer_to_free);
1597 break;
1598 case AVMEDIA_TYPE_SUBTITLE:
1599 ret = avcodec_decode_subtitle2(ist->st->codec,
1600 &subtitle, &got_output, &avpkt);
1601 if (ret < 0)
1602 return ret;
1603 if (!got_output) {
1604 goto discard_packet;
1605 }
1606 subtitle_to_free = &subtitle;
1607 avpkt.size = 0;
1608 break;
1609 default:
1610 return -1;
1611 }
1612 } else {
1613 switch(ist->st->codec->codec_type) {
1614 case AVMEDIA_TYPE_AUDIO:
1615 ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1616 ist->st->codec->sample_rate;
1617 break;
1618 case AVMEDIA_TYPE_VIDEO:
1619 if (ist->st->codec->time_base.num != 0) {
1620 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1621 ist->next_pts += ((int64_t)AV_TIME_BASE *
1622 ist->st->codec->time_base.num * ticks) /
1623 ist->st->codec->time_base.den;
1624 }
1625 break;
1626 }
1627 ret = avpkt.size;
1628 avpkt.size = 0;
1629 }
1630
1631 #if CONFIG_AVFILTER
1632 if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1633 for (i = 0; i < nb_ostreams; i++) {
1634 ost = ost_table[i];
1635 if (ost->input_video_filter && ost->source_index == ist_index) {
1636 AVRational sar;
1637 if (ist->st->sample_aspect_ratio.num)
1638 sar = ist->st->sample_aspect_ratio;
1639 else
1640 sar = ist->st->codec->sample_aspect_ratio;
1641 // add it to be filtered
1642 av_vsrc_buffer_add_frame(ost->input_video_filter, &picture,
1643 ist->pts,
1644 sar);
1645 }
1646 }
1647 }
1648 #endif
1649
1650 // preprocess audio (volume)
1651 if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1652 if (audio_volume != 256) {
1653 short *volp;
1654 volp = samples;
1655 for(i=0;i<(decoded_data_size / sizeof(short));i++) {
1656 int v = ((*volp) * audio_volume + 128) >> 8;
1657 if (v < -32768) v = -32768;
1658 if (v > 32767) v = 32767;
1659 *volp++ = v;
1660 }
1661 }
1662 }
1663
1664 /* frame rate emulation */
1665 if (rate_emu) {
1666 int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1667 int64_t now = av_gettime() - ist->start;
1668 if (pts > now)
1669 usleep(pts - now);
1670 }
1671 /* if output time reached then transcode raw format,
1672 encode packets and output them */
1673 if (start_time == 0 || ist->pts >= start_time)
1674 for(i=0;i<nb_ostreams;i++) {
1675 int frame_size;
1676
1677 ost = ost_table[i];
1678 if (ost->source_index == ist_index) {
1679 #if CONFIG_AVFILTER
1680 frame_available = ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO ||
1681 !ost->output_video_filter || avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1682 while (frame_available) {
1683 AVRational ist_pts_tb;
1684 if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ost->output_video_filter)
1685 get_filtered_video_frame(ost->output_video_filter, &picture, &ost->picref, &ist_pts_tb);
1686 if (ost->picref)
1687 ist->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1688 #endif
1689 os = output_files[ost->file_index];
1690
1691 /* set the input output pts pairs */
1692 //ost->sync_ipts = (double)(ist->pts + input_files[ist->file_index].ts_offset - start_time)/ AV_TIME_BASE;
1693
1694 if (ost->encoding_needed) {
1695 av_assert0(ist->decoding_needed);
1696 switch(ost->st->codec->codec_type) {
1697 case AVMEDIA_TYPE_AUDIO:
1698 do_audio_out(os, ost, ist, decoded_data_buf, decoded_data_size);
1699 break;
1700 case AVMEDIA_TYPE_VIDEO:
1701 #if CONFIG_AVFILTER
1702 if (ost->picref->video && !ost->frame_aspect_ratio)
1703 ost->st->codec->sample_aspect_ratio = ost->picref->video->pixel_aspect;
1704 #endif
1705 do_video_out(os, ost, ist, &picture, &frame_size,
1706 same_quality ? quality : ost->st->codec->global_quality);
1707 if (vstats_filename && frame_size)
1708 do_video_stats(os, ost, frame_size);
1709 break;
1710 case AVMEDIA_TYPE_SUBTITLE:
1711 do_subtitle_out(os, ost, ist, &subtitle,
1712 pkt->pts);
1713 break;
1714 default:
1715 abort();
1716 }
1717 } else {
1718 AVFrame avframe; //FIXME/XXX remove this
1719 AVPacket opkt;
1720 int64_t ost_tb_start_time= av_rescale_q(start_time, AV_TIME_BASE_Q, ost->st->time_base);
1721
1722 av_init_packet(&opkt);
1723
1724 if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) && !copy_initial_nonkeyframes)
1725 #if !CONFIG_AVFILTER
1726 continue;
1727 #else
1728 goto cont;
1729 #endif
1730
1731 /* no reencoding needed : output the packet directly */
1732 /* force the input stream PTS */
1733
1734 avcodec_get_frame_defaults(&avframe);
1735 ost->st->codec->coded_frame= &avframe;
1736 avframe.key_frame = pkt->flags & AV_PKT_FLAG_KEY;
1737
1738 if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1739 audio_size += data_size;
1740 else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1741 video_size += data_size;
1742 ost->sync_opts++;
1743 }
1744
1745 opkt.stream_index= ost->index;
1746 if(pkt->pts != AV_NOPTS_VALUE)
1747 opkt.pts= av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1748 else
1749 opkt.pts= AV_NOPTS_VALUE;
1750
1751 if (pkt->dts == AV_NOPTS_VALUE)
1752 opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1753 else
1754 opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1755 opkt.dts -= ost_tb_start_time;
1756
1757 opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1758 opkt.flags= pkt->flags;
1759
1760 //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1761 if( ost->st->codec->codec_id != CODEC_ID_H264
1762 && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1763 && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1764 ) {
1765 if(av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, data_buf, data_size, pkt->flags & AV_PKT_FLAG_KEY))
1766 opkt.destruct= av_destruct_packet;
1767 } else {
1768 opkt.data = data_buf;
1769 opkt.size = data_size;
1770 }
1771
1772 write_frame(os, &opkt, ost->st->codec, ost->bitstream_filters);
1773 ost->st->codec->frame_number++;
1774 ost->frame_number++;
1775 av_free_packet(&opkt);
1776 }
1777 #if CONFIG_AVFILTER
1778 cont:
1779 frame_available = (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) &&
1780 ost->output_video_filter && avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1781 if (ost->picref)
1782 avfilter_unref_buffer(ost->picref);
1783 }
1784 #endif
1785 }
1786 }
1787
1788 av_free(buffer_to_free);
1789 /* XXX: allocate the subtitles in the codec ? */
1790 if (subtitle_to_free) {
1791 avsubtitle_free(subtitle_to_free);
1792 subtitle_to_free = NULL;
1793 }
1794 }
1795 discard_packet:
1796 if (pkt == NULL) {
1797 /* EOF handling */
1798
1799 for(i=0;i<nb_ostreams;i++) {
1800 ost = ost_table[i];
1801 if (ost->source_index == ist_index) {
1802 AVCodecContext *enc= ost->st->codec;
1803 os = output_files[ost->file_index];
1804
1805 if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
1806 continue;
1807 if(ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE))
1808 continue;
1809
1810 if (ost->encoding_needed) {
1811 for(;;) {
1812 AVPacket pkt;
1813 int fifo_bytes;
1814 av_init_packet(&pkt);
1815 pkt.stream_index= ost->index;
1816
1817 switch(ost->st->codec->codec_type) {
1818 case AVMEDIA_TYPE_AUDIO:
1819 fifo_bytes = av_fifo_size(ost->fifo);
1820 ret = 0;
1821 /* encode any samples remaining in fifo */
1822 if (fifo_bytes > 0) {
1823 int osize = av_get_bytes_per_sample(enc->sample_fmt);
1824 int fs_tmp = enc->frame_size;
1825
1826 av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1827 if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1828 enc->frame_size = fifo_bytes / (osize * enc->channels);
1829 } else { /* pad */
1830 int frame_bytes = enc->frame_size*osize*enc->channels;
1831 if (allocated_audio_buf_size < frame_bytes)
1832 exit_program(1);
1833 generate_silence(audio_buf+fifo_bytes, enc->sample_fmt, frame_bytes - fifo_bytes);
1834 }
1835
1836 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1837 pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1838 ost->st->time_base.num, enc->sample_rate);
1839 enc->frame_size = fs_tmp;
1840 }
1841 if(ret <= 0) {
1842 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1843 }
1844 if (ret < 0) {
1845 fprintf(stderr, "Audio encoding failed\n");
1846 exit_program(1);
1847 }
1848 audio_size += ret;
1849 pkt.flags |= AV_PKT_FLAG_KEY;
1850 break;
1851 case AVMEDIA_TYPE_VIDEO:
1852 ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1853 if (ret < 0) {
1854 fprintf(stderr, "Video encoding failed\n");
1855 exit_program(1);
1856 }
1857 video_size += ret;
1858 if(enc->coded_frame && enc->coded_frame->key_frame)
1859 pkt.flags |= AV_PKT_FLAG_KEY;
1860 if (ost->logfile && enc->stats_out) {
1861 fprintf(ost->logfile, "%s", enc->stats_out);
1862 }
1863 break;
1864 default:
1865 ret=-1;
1866 }
1867
1868 if(ret<=0)
1869 break;
1870 pkt.data= bit_buffer;
1871 pkt.size= ret;
1872 if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1873 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1874 write_frame(os, &pkt, ost->st->codec, ost->bitstream_filters);
1875 }
1876 }
1877 }
1878 }
1879 }
1880
1881 return 0;
1882 }
1883
1884 static void print_sdp(AVFormatContext **avc, int n)
1885 {
1886 char sdp[2048];
1887
1888 av_sdp_create(avc, n, sdp, sizeof(sdp));
1889 printf("SDP:\n%s\n", sdp);
1890 fflush(stdout);
1891 }
1892
1893 static int copy_chapters(int infile, int outfile)
1894 {
1895 AVFormatContext *is = input_files[infile].ctx;
1896 AVFormatContext *os = output_files[outfile];
1897 int i;
1898
1899 for (i = 0; i < is->nb_chapters; i++) {
1900 AVChapter *in_ch = is->chapters[i], *out_ch;
1901 int64_t ts_off = av_rescale_q(start_time - input_files[infile].ts_offset,
1902 AV_TIME_BASE_Q, in_ch->time_base);
1903 int64_t rt = (recording_time == INT64_MAX) ? INT64_MAX :
1904 av_rescale_q(recording_time, AV_TIME_BASE_Q, in_ch->time_base);
1905
1906
1907 if (in_ch->end < ts_off)
1908 continue;
1909 if (rt != INT64_MAX && in_ch->start > rt + ts_off)
1910 break;
1911
1912 out_ch = av_mallocz(sizeof(AVChapter));
1913 if (!out_ch)
1914 return AVERROR(ENOMEM);
1915
1916 out_ch->id = in_ch->id;
1917 out_ch->time_base = in_ch->time_base;
1918 out_ch->start = FFMAX(0, in_ch->start - ts_off);
1919 out_ch->end = FFMIN(rt, in_ch->end - ts_off);
1920
1921 if (metadata_chapters_autocopy)
1922 av_dict_copy(&out_ch->metadata, in_ch->metadata, 0);
1923
1924 os->nb_chapters++;
1925 os->chapters = av_realloc(os->chapters, sizeof(AVChapter)*os->nb_chapters);
1926 if (!os->chapters)
1927 return AVERROR(ENOMEM);
1928 os->chapters[os->nb_chapters - 1] = out_ch;
1929 }
1930 return 0;
1931 }
1932
1933 static void parse_forced_key_frames(char *kf, OutputStream *ost,
1934 AVCodecContext *avctx)
1935 {
1936 char *p;
1937 int n = 1, i;
1938 int64_t t;
1939
1940 for (p = kf; *p; p++)
1941 if (*p == ',')
1942 n++;
1943 ost->forced_kf_count = n;
1944 ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
1945 if (!ost->forced_kf_pts) {
1946 av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
1947 exit_program(1);
1948 }
1949 for (i = 0; i < n; i++) {
1950 p = i ? strchr(p, ',') + 1 : kf;
1951 t = parse_time_or_die("force_key_frames", p, 1);
1952 ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
1953 }
1954 }
1955
1956 /*
1957 * The following code is the main loop of the file converter
1958 */
1959 static int transcode(AVFormatContext **output_files,
1960 int nb_output_files,
1961 InputFile *input_files,
1962 int nb_input_files)
1963 {
1964 int ret = 0, i, j, k, n, nb_ostreams = 0;
1965 AVFormatContext *is, *os;
1966 AVCodecContext *codec, *icodec;
1967 OutputStream *ost, **ost_table = NULL;
1968 InputStream *ist;
1969 char error[1024];
1970 int want_sdp = 1;
1971 uint8_t no_packet[MAX_FILES]={0};
1972 int no_packet_count=0;
1973
1974 if (rate_emu)
1975 for (i = 0; i < nb_input_streams; i++)
1976 input_streams[i].start = av_gettime();
1977
1978 /* output stream init */
1979 nb_ostreams = 0;
1980 for(i=0;i<nb_output_files;i++) {
1981 os = output_files[i];
1982 if (!os->nb_streams && !(os->oformat->flags & AVFMT_NOSTREAMS)) {
1983 av_dump_format(output_files[i], i, output_files[i]->filename, 1);
1984 fprintf(stderr, "Output file #%d does not contain any stream\n", i);
1985 ret = AVERROR(EINVAL);
1986 goto fail;
1987 }
1988 nb_ostreams += os->nb_streams;
1989 }
1990
1991 ost_table = av_mallocz(sizeof(OutputStream *) * nb_ostreams);
1992 if (!ost_table)
1993 goto fail;
1994 n = 0;
1995 for(k=0;k<nb_output_files;k++) {
1996 os = output_files[k];
1997 for (i = 0; i < os->nb_streams; i++, n++)
1998 ost_table[n] = output_streams_for_file[k][i];
1999 }
2000
2001 /* for each output stream, we compute the right encoding parameters */
2002 for(i=0;i<nb_ostreams;i++) {
2003 ost = ost_table[i];
2004 os = output_files[ost->file_index];
2005 ist = &input_streams[ost->source_index];
2006
2007 codec = ost->st->codec;
2008 icodec = ist->st->codec;
2009
2010 ost->st->disposition = ist->st->disposition;
2011 codec->bits_per_raw_sample= icodec->bits_per_raw_sample;
2012 codec->chroma_sample_location = icodec->chroma_sample_location;
2013
2014 if (ost->st->stream_copy) {
2015 uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2016
2017 if (extra_size > INT_MAX)
2018 goto fail;
2019
2020 /* if stream_copy is selected, no need to decode or encode */
2021 codec->codec_id = icodec->codec_id;
2022 codec->codec_type = icodec->codec_type;
2023
2024 if(!codec->codec_tag){
2025 if( !os->oformat->codec_tag
2026 || av_codec_get_id (os->oformat->codec_tag, icodec->codec_tag) == codec->codec_id
2027 || av_codec_get_tag(os->oformat->codec_tag, icodec->codec_id) <= 0)
2028 codec->codec_tag = icodec->codec_tag;
2029 }
2030
2031 codec->bit_rate = icodec->bit_rate;
2032 codec->rc_max_rate = icodec->rc_max_rate;
2033 codec->rc_buffer_size = icodec->rc_buffer_size;
2034 codec->extradata= av_mallocz(extra_size);
2035 if (!codec->extradata)
2036 goto fail;
2037 memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2038 codec->extradata_size= icodec->extradata_size;
2039 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){
2040 codec->time_base = icodec->time_base;
2041 codec->time_base.num *= icodec->ticks_per_frame;
2042 av_reduce(&codec->time_base.num, &codec->time_base.den,
2043 codec->time_base.num, codec->time_base.den, INT_MAX);
2044 }else
2045 codec->time_base = ist->st->time_base;
2046 switch(codec->codec_type) {
2047 case AVMEDIA_TYPE_AUDIO:
2048 if(audio_volume != 256) {
2049 fprintf(stderr,"-acodec copy and -vol are incompatible (frames are not decoded)\n");
2050 exit_program(1);
2051 }
2052 codec->channel_layout = icodec->channel_layout;
2053 codec->sample_rate = icodec->sample_rate;
2054 codec->channels = icodec->channels;
2055 codec->frame_size = icodec->frame_size;
2056 codec->audio_service_type = icodec->audio_service_type;
2057 codec->block_align= icodec->block_align;
2058 if(codec->block_align == 1 && codec->codec_id == CODEC_ID_MP3)
2059 codec->block_align= 0;
2060 if(codec->codec_id == CODEC_ID_AC3)
2061 codec->block_align= 0;
2062 break;
2063 case AVMEDIA_TYPE_VIDEO:
2064 codec->pix_fmt = icodec->pix_fmt;
2065 codec->width = icodec->width;
2066 codec->height = icodec->height;
2067 codec->has_b_frames = icodec->has_b_frames;
2068 if (!codec->sample_aspect_ratio.num) {
2069 codec->sample_aspect_ratio =
2070 ost->st->sample_aspect_ratio =
2071 ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2072 ist->st->codec->sample_aspect_ratio.num ?
2073 ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2074 }
2075 break;
2076 case AVMEDIA_TYPE_SUBTITLE:
2077 codec->width = icodec->width;
2078 codec->height = icodec->height;
2079 break;
2080 case AVMEDIA_TYPE_DATA:
2081 break;
2082 default:
2083 abort();
2084 }
2085 } else {
2086 if (!ost->enc)
2087 ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
2088 switch(codec->codec_type) {
2089 case AVMEDIA_TYPE_AUDIO:
2090 ost->fifo= av_fifo_alloc(1024);
2091 if(!ost->fifo)
2092 goto fail;
2093 ost->reformat_pair = MAKE_SFMT_PAIR(AV_SAMPLE_FMT_NONE,AV_SAMPLE_FMT_NONE);
2094 if (!codec->sample_rate) {
2095 codec->sample_rate = icodec->sample_rate;
2096 if (icodec->lowres)
2097 codec->sample_rate >>= icodec->lowres;
2098 }
2099 choose_sample_rate(ost->st, ost->enc);
2100 codec->time_base = (AVRational){1, codec->sample_rate};
2101 if (codec->sample_fmt == AV_SAMPLE_FMT_NONE)
2102 codec->sample_fmt = icodec->sample_fmt;
2103 choose_sample_fmt(ost->st, ost->enc);
2104 if (!codec->channels)
2105 codec->channels = icodec->channels;
2106 codec->channel_layout = icodec->channel_layout;
2107 if (av_get_channel_layout_nb_channels(codec->channel_layout) != codec->channels)
2108 codec->channel_layout = 0;
2109 ost->audio_resample = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
2110 icodec->request_channels = codec->channels;
2111 ist->decoding_needed = 1;
2112 ost->encoding_needed = 1;
2113 ost->resample_sample_fmt = icodec->sample_fmt;
2114 ost->resample_sample_rate = icodec->sample_rate;
2115 ost->resample_channels = icodec->channels;
2116 break;
2117 case AVMEDIA_TYPE_VIDEO:
2118 if (codec->pix_fmt == PIX_FMT_NONE)
2119 codec->pix_fmt = icodec->pix_fmt;
2120 choose_pixel_fmt(ost->st, ost->enc);
2121
2122 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2123 fprintf(stderr, "Video pixel format is unknown, stream cannot be encoded\n");
2124 exit_program(1);
2125 }
2126
2127 if (!codec->width || !codec->height) {
2128 codec->width = icodec->width;
2129 codec->height = icodec->height;
2130 }
2131
2132 ost->video_resample = codec->width != icodec->width ||
2133 codec->height != icodec->height ||
2134 codec->pix_fmt != icodec->pix_fmt;
2135 if (ost->video_resample) {
2136 #if !CONFIG_AVFILTER
2137 avcodec_get_frame_defaults(&ost->pict_tmp);
2138 if(avpicture_alloc((AVPicture*)&ost->pict_tmp, codec->pix_fmt,
2139 codec->width, codec->height)) {
2140 fprintf(stderr, "Cannot allocate temp picture, check pix fmt\n");
2141 exit_program(1);
2142 }
2143 ost->img_resample_ctx = sws_getContext(
2144 icodec->width,
2145 icodec->height,
2146 icodec->pix_fmt,
2147 codec->width,
2148 codec->height,
2149 codec->pix_fmt,
2150 ost->sws_flags, NULL, NULL, NULL);
2151 if (ost->img_resample_ctx == NULL) {
2152 fprintf(stderr, "Cannot get resampling context\n");
2153 exit_program(1);
2154 }
2155 #endif
2156 codec->bits_per_raw_sample= 0;
2157 }
2158
2159 ost->resample_height = icodec->height;
2160 ost->resample_width = icodec->width;
2161 ost->resample_pix_fmt= icodec->pix_fmt;
2162 ost->encoding_needed = 1;
2163 ist->decoding_needed = 1;
2164
2165 if (!ost->frame_rate.num)
2166 ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25,1};
2167 if (ost->enc && ost->enc->supported_framerates && !force_fps) {
2168 int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2169 ost->frame_rate = ost->enc->supported_framerates[idx];
2170 }
2171 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
2172
2173 #if CONFIG_AVFILTER
2174 if (configure_video_filters(ist, ost)) {
2175 fprintf(stderr, "Error opening filters!\n");
2176 exit(1);
2177 }
2178 #endif
2179 break;
2180 case AVMEDIA_TYPE_SUBTITLE:
2181 ost->encoding_needed = 1;
2182 ist->decoding_needed = 1;
2183 break;
2184 default:
2185 abort();
2186 break;
2187 }
2188 /* two pass mode */
2189 if (ost->encoding_needed &&
2190 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2191 char logfilename[1024];
2192 FILE *f;
2193
2194 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2195 pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2196 i);
2197 if (codec->flags & CODEC_FLAG_PASS1) {
2198 f = fopen(logfilename, "wb");
2199 if (!f) {
2200 fprintf(stderr, "Cannot write log file '%s' for pass-1 encoding: %s\n", logfilename, strerror(errno));
2201 exit_program(1);
2202 }
2203 ost->logfile = f;
2204 } else {
2205 char *logbuffer;
2206 size_t logbuffer_size;
2207 if (read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2208 fprintf(stderr, "Error reading log file '%s' for pass-2 encoding\n", logfilename);
2209 exit_program(1);
2210 }
2211 codec->stats_in = logbuffer;
2212 }
2213 }
2214 }
2215 if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2216 int size= codec->width * codec->height;
2217 bit_buffer_size= FFMAX(bit_buffer_size, 6*size + 200);
2218 }
2219 }
2220
2221 if (!bit_buffer)
2222 bit_buffer = av_malloc(bit_buffer_size);
2223 if (!bit_buffer) {
2224 fprintf(stderr, "Cannot allocate %d bytes output buffer\n",
2225 bit_buffer_size);
2226 ret = AVERROR(ENOMEM);
2227 goto fail;
2228 }
2229
2230 /* open each encoder */
2231 for(i=0;i<nb_ostreams;i++) {
2232 ost = ost_table[i];
2233 if (ost->encoding_needed) {
2234 AVCodec *codec = ost->enc;
2235 AVCodecContext *dec = input_streams[ost->source_index].st->codec;
2236 if (!codec) {
2237 snprintf(error, sizeof(error), "Encoder (codec id %d) not found for output stream #%d.%d",
2238 ost->st->codec->codec_id, ost->file_index, ost->index);
2239 ret = AVERROR(EINVAL);
2240 goto dump_format;
2241 }
2242 if (dec->subtitle_header) {
2243 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2244 if (!ost->st->codec->subtitle_header) {
2245 ret = AVERROR(ENOMEM);
2246 goto dump_format;
2247 }
2248 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2249 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2250 }
2251 if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2252 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d.%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2253 ost->file_index, ost->index);
2254 ret = AVERROR(EINVAL);
2255 goto dump_format;
2256 }
2257 assert_codec_experimental(ost->st->codec, 1);
2258 assert_avoptions(ost->opts);
2259 if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2260 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2261 "It takes bits/s as argument, not kbits/s\n");
2262 extra_size += ost->st->codec->extradata_size;
2263 }
2264 }
2265
2266 /* open each decoder */
2267 for (i = 0; i < nb_input_streams; i++) {
2268 ist = &input_streams[i];
2269 if (ist->decoding_needed) {
2270 AVCodec *codec = ist->dec;
2271 if (!codec)
2272 codec = avcodec_find_decoder(ist->st->codec->codec_id);
2273 if (!codec) {
2274 snprintf(error, sizeof(error), "Decoder (codec id %d) not found for input stream #%d.%d",
2275 ist->st->codec->codec_id, ist->file_index, ist->st->index);
2276 ret = AVERROR(EINVAL);
2277 goto dump_format;
2278 }
2279
2280 /* update requested sample format for the decoder based on the
2281 corresponding encoder sample format */
2282 for (j = 0; j < nb_ostreams; j++) {
2283 ost = ost_table[j];
2284 if (ost->source_index == i) {
2285 update_sample_fmt(ist->st->codec, codec, ost->st->codec);
2286 break;
2287 }
2288 }
2289
2290 if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
2291 snprintf(error, sizeof(error), "Error while opening decoder for input stream #%d.%d",
2292 ist->file_index, ist->st->index);
2293 ret = AVERROR(EINVAL);
2294 goto dump_format;
2295 }
2296 assert_codec_experimental(ist->st->codec, 0);
2297 assert_avoptions(ost->opts);
2298 //if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2299 // ist->st->codec->flags |= CODEC_FLAG_REPEAT_FIELD;
2300 }
2301 }
2302
2303 /* init pts */
2304 for (i = 0; i < nb_input_streams; i++) {
2305 AVStream *st;
2306 ist = &input_streams[i];
2307 st= ist->st;
2308 ist->pts = st->avg_frame_rate.num ? - st->codec->has_b_frames*AV_TIME_BASE / av_q2d(st->avg_frame_rate) : 0;
2309 ist->next_pts = AV_NOPTS_VALUE;
2310 init_pts_correction(&ist->pts_ctx);
2311 ist->is_start = 1;
2312 }
2313
2314 /* open files and write file headers */
2315 for(i=0;i<nb_output_files;i++) {
2316 os = output_files[i];
2317 if (avformat_write_header(os, &output_opts[i]) < 0) {
2318 snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2319 ret = AVERROR(EINVAL);
2320 goto dump_format;
2321 }
2322 assert_avoptions(output_opts[i]);
2323 if (strcmp(output_files[i]->oformat->name, "rtp")) {
2324 want_sdp = 0;
2325 }
2326 }
2327
2328 dump_format:
2329 /* dump the file output parameters - cannot be done before in case
2330 of stream copy */
2331 for(i=0;i<nb_output_files;i++) {
2332 av_dump_format(output_files[i], i, output_files[i]->filename, 1);
2333 }
2334
2335 /* dump the stream mapping */
2336 if (verbose >= 0) {
2337 fprintf(stderr, "Stream mapping:\n");
2338 for(i=0;i<nb_ostreams;i++) {
2339 ost = ost_table[i];
2340 fprintf(stderr, " Stream #%d.%d -> #%d.%d",
2341 input_streams[ost->source_index].file_index,
2342 input_streams[ost->source_index].st->index,
2343 ost->file_index,
2344 ost->index);
2345 if (ost->sync_ist != &input_streams[ost->source_index])
2346 fprintf(stderr, " [sync #%d.%d]",
2347 ost->sync_ist->file_index,
2348 ost->sync_ist->st->index);
2349 fprintf(stderr, "\n");
2350 }
2351 }
2352
2353 if (ret) {
2354 fprintf(stderr, "%s\n", error);
2355 goto fail;
2356 }
2357
2358 if (want_sdp) {
2359 print_sdp(output_files, nb_output_files);
2360 }
2361
2362 if (verbose >= 0)
2363 fprintf(stderr, "Press ctrl-c to stop encoding\n");
2364 term_init();
2365
2366 timer_start = av_gettime();
2367
2368 for(; received_sigterm == 0;) {
2369 int file_index, ist_index;
2370 AVPacket pkt;
2371 double ipts_min;
2372 double opts_min;
2373
2374 redo:
2375 ipts_min= 1e100;
2376 opts_min= 1e100;
2377
2378 /* select the stream that we must read now by looking at the
2379 smallest output pts */
2380 file_index = -1;
2381 for(i=0;i<nb_ostreams;i++) {
2382 double ipts, opts;
2383 ost = ost_table[i];
2384 os = output_files[ost->file_index];
2385 ist = &input_streams[ost->source_index];
2386 if(ist->is_past_recording_time || no_packet[ist->file_index])
2387 continue;
2388 opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2389 ipts = (double)ist->pts;
2390 if (!input_files[ist->file_index].eof_reached){
2391 if(ipts < ipts_min) {
2392 ipts_min = ipts;
2393 if(input_sync ) file_index = ist->file_index;
2394 }
2395 if(opts < opts_min) {
2396 opts_min = opts;
2397 if(!input_sync) file_index = ist->file_index;
2398 }
2399 }
2400 if(ost->frame_number >= max_frames[ost->st->codec->codec_type]){
2401 file_index= -1;
2402 break;
2403 }
2404 }
2405 /* if none, if is finished */
2406 if (file_index < 0) {
2407 if(no_packet_count){
2408 no_packet_count=0;
2409 memset(no_packet, 0, sizeof(no_packet));
2410 usleep(10000);
2411 continue;
2412 }
2413 break;
2414 }
2415
2416 /* finish if limit size exhausted */
2417 if (limit_filesize != 0 && limit_filesize <= avio_tell(output_files[0]->pb))
2418 break;
2419
2420 /* read a frame from it and output it in the fifo */
2421 is = input_files[file_index].ctx;
2422 ret= av_read_frame(is, &pkt);
2423 if(ret == AVERROR(EAGAIN)){
2424 no_packet[file_index]=1;
2425 no_packet_count++;
2426 continue;
2427 }
2428 if (ret < 0) {
2429 input_files[file_index].eof_reached = 1;
2430 if (opt_shortest)
2431 break;
2432 else
2433 continue;
2434 }
2435
2436 no_packet_count=0;
2437 memset(no_packet, 0, sizeof(no_packet));
2438
2439 if (do_pkt_dump) {
2440 av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2441 is->streams[pkt.stream_index]);
2442 }
2443 /* the following test is needed in case new streams appear
2444 dynamically in stream : we ignore them */
2445 if (pkt.stream_index >= input_files[file_index].ctx->nb_streams)
2446 goto discard_packet;
2447 ist_index = input_files[file_index].ist_index + pkt.stream_index;
2448 ist = &input_streams[ist_index];
2449 if (ist->discard)
2450 goto discard_packet;
2451
2452 if (pkt.dts != AV_NOPTS_VALUE)
2453 pkt.dts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2454 if (pkt.pts != AV_NOPTS_VALUE)
2455 pkt.pts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2456
2457 if (ist->ts_scale) {
2458 if(pkt.pts != AV_NOPTS_VALUE)
2459 pkt.pts *= ist->ts_scale;
2460 if(pkt.dts != AV_NOPTS_VALUE)
2461 pkt.dts *= ist->ts_scale;
2462 }
2463
2464 // 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);
2465 if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2466 && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2467 int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2468 int64_t delta= pkt_dts - ist->next_pts;
2469 if((FFABS(delta) > 1LL*dts_delta_threshold*AV_TIME_BASE || pkt_dts+1<ist->pts)&& !copy_ts){
2470 input_files[ist->file_index].ts_offset -= delta;
2471 if (verbose > 2)
2472 fprintf(stderr, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2473 delta, input_files[ist->file_index].ts_offset);
2474 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2475 if(pkt.pts != AV_NOPTS_VALUE)
2476 pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2477 }
2478 }
2479
2480 /* finish if recording time exhausted */
2481 if (recording_time != INT64_MAX &&
2482 av_compare_ts(pkt.pts, ist->st->time_base, recording_time + start_time, (AVRational){1, 1000000}) >= 0) {
2483 ist->is_past_recording_time = 1;
2484 goto discard_packet;
2485 }
2486
2487 //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
2488 if (output_packet(ist, ist_index, ost_table, nb_ostreams, &pkt) < 0) {
2489
2490 if (verbose >= 0)
2491 fprintf(stderr, "Error while decoding stream #%d.%d\n",
2492 ist->file_index, ist->st->index);
2493 if (exit_on_error)
2494 exit_program(1);
2495 av_free_packet(&pkt);
2496 goto redo;
2497 }
2498
2499 discard_packet:
2500 av_free_packet(&pkt);
2501
2502 /* dump report by using the output first video and audio streams */
2503 print_report(output_files, ost_table, nb_ostreams, 0);
2504 }
2505
2506 /* at the end of stream, we must flush the decoder buffers */
2507 for (i = 0; i < nb_input_streams; i++) {
2508 ist = &input_streams[i];
2509 if (ist->decoding_needed) {
2510 output_packet(ist, i, ost_table, nb_ostreams, NULL);
2511 }
2512 }
2513
2514 term_exit();
2515
2516 /* write the trailer if needed and close file */
2517 for(i=0;i<nb_output_files;i++) {
2518 os = output_files[i];
2519 av_write_trailer(os);
2520 }
2521
2522 /* dump report by using the first video and audio streams */
2523 print_report(output_files, ost_table, nb_ostreams, 1);
2524
2525 /* close each encoder */
2526 for(i=0;i<nb_ostreams;i++) {
2527 ost = ost_table[i];
2528 if (ost->encoding_needed) {
2529 av_freep(&ost->st->codec->stats_in);
2530 avcodec_close(ost->st->codec);
2531 }
2532 #if CONFIG_AVFILTER
2533 avfilter_graph_free(&ost->graph);
2534 #endif
2535 }
2536
2537 /* close each decoder */
2538 for (i = 0; i < nb_input_streams; i++) {
2539 ist = &input_streams[i];
2540 if (ist->decoding_needed) {
2541 avcodec_close(ist->st->codec);
2542 }
2543 }
2544
2545 /* finished ! */
2546 ret = 0;
2547
2548 fail:
2549 av_freep(&bit_buffer);
2550
2551 if (ost_table) {
2552 for(i=0;i<nb_ostreams;i++) {
2553 ost = ost_table[i];
2554 if (ost) {
2555 if (ost->st->stream_copy)
2556 av_freep(&ost->st->codec->extradata);
2557 if (ost->logfile) {
2558 fclose(ost->logfile);
2559 ost->logfile = NULL;
2560 }
2561 av_fifo_free(ost->fifo); /* works even if fifo is not
2562 initialized but set to zero */
2563 av_freep(&ost->st->codec->subtitle_header);
2564 av_free(ost->pict_tmp.data[0]);
2565 av_free(ost->forced_kf_pts);
2566 if (ost->video_resample)
2567 sws_freeContext(ost->img_resample_ctx);
2568 if (ost->resample)
2569 audio_resample_close(ost->resample);
2570 if (ost->reformat_ctx)
2571 av_audio_convert_free(ost->reformat_ctx);
2572 av_dict_free(&ost->opts);
2573 av_free(ost);
2574 }
2575 }
2576 av_free(ost_table);
2577 }
2578 return ret;
2579 }
2580
2581 static int opt_format(const char *opt, const char *arg)
2582 {
2583 last_asked_format = arg;
2584 return 0;
2585 }
2586
2587 static int opt_video_rc_override_string(const char *opt, const char *arg)
2588 {
2589 video_rc_override_string = arg;
2590 return 0;
2591 }
2592
2593 static int opt_me_threshold(const char *opt, const char *arg)
2594 {
2595 me_threshold = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
2596 return 0;
2597 }
2598
2599 static int opt_verbose(const char *opt, const char *arg)
2600 {
2601 verbose = parse_number_or_die(opt, arg, OPT_INT64, -10, 10);
2602 return 0;
2603 }
2604
2605 static int opt_frame_rate(const char *opt, const char *arg)
2606 {
2607 if (av_parse_video_rate(&frame_rate, arg) < 0) {
2608 fprintf(stderr, "Incorrect value for %s: %s\n", opt, arg);
2609 exit_program(1);
2610 }
2611 return 0;
2612 }
2613
2614 static int opt_frame_crop(const char *opt, const char *arg)
2615 {
2616 fprintf(stderr, "Option '%s' has been removed, use the crop filter instead\n", opt);
2617 return AVERROR(EINVAL);
2618 }
2619
2620 static int opt_frame_size(const char *opt, const char *arg)
2621 {
2622 if (av_parse_video_size(&frame_width, &frame_height, arg) < 0) {
2623 fprintf(stderr, "Incorrect frame size\n");
2624 return AVERROR(EINVAL);
2625 }
2626 return 0;
2627 }
2628
2629 static int opt_pad(const char *opt, const char *arg) {
2630 fprintf(stderr, "Option '%s' has been removed, use the pad filter instead\n", opt);
2631 return -1;
2632 }
2633
2634 static int opt_frame_pix_fmt(const char *opt, const char *arg)
2635 {
2636 if (strcmp(arg, "list")) {
2637 frame_pix_fmt = av_get_pix_fmt(arg);
2638 if (frame_pix_fmt == PIX_FMT_NONE) {
2639 fprintf(stderr, "Unknown pixel format requested: %s\n", arg);
2640 return AVERROR(EINVAL);
2641 }
2642 } else {
2643 show_pix_fmts();
2644 exit_program(0);
2645 }
2646 return 0;
2647 }
2648
2649 static int opt_frame_aspect_ratio(const char *opt, const char *arg)
2650 {
2651 int x = 0, y = 0;
2652 double ar = 0;
2653 const char *p;
2654 char *end;
2655
2656 p = strchr(arg, ':');
2657 if (p) {
2658 x = strtol(arg, &end, 10);
2659 if (end == p)
2660 y = strtol(end+1, &end, 10);
2661 if (x > 0 && y > 0)
2662 ar = (double)x / (double)y;
2663 } else
2664 ar = strtod(arg, NULL);
2665
2666 if (!ar) {
2667 fprintf(stderr, "Incorrect aspect ratio specification.\n");
2668 return AVERROR(EINVAL);
2669 }
2670 frame_aspect_ratio = ar;
2671 return 0;
2672 }
2673
2674 static int opt_metadata(const char *opt, const char *arg)
2675 {
2676 char *mid= strchr(arg, '=');
2677
2678 if(!mid){
2679 fprintf(stderr, "Missing =\n");
2680 exit_program(1);
2681 }
2682 *mid++= 0;
2683
2684 av_dict_set(&metadata, arg, mid, 0);
2685
2686 return 0;
2687 }
2688
2689 static int opt_qscale(const char *opt, const char *arg)
2690 {
2691 video_qscale = parse_number_or_die(opt, arg, OPT_FLOAT, 0, 255);
2692 if (video_qscale == 0) {
2693 fprintf(stderr, "qscale must be > 0.0 and <= 255\n");
2694 return AVERROR(EINVAL);
2695 }
2696 return 0;
2697 }
2698
2699 static int opt_top_field_first(const char *opt, const char *arg)
2700 {
2701 top_field_first = parse_number_or_die(opt, arg, OPT_INT, 0, 1);
2702 return 0;
2703 }
2704
2705 static int opt_thread_count(const char *opt, const char *arg)
2706 {
2707 thread_count= parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2708 #if !HAVE_THREADS
2709 if (verbose >= 0)
2710 fprintf(stderr, "Warning: not compiled with thread support, using thread emulation\n");
2711 #endif
2712 return 0;
2713 }
2714
2715 static int opt_audio_sample_fmt(const char *opt, const char *arg)
2716 {
2717 if (strcmp(arg, "list")) {
2718 audio_sample_fmt = av_get_sample_fmt(arg);
2719 if (audio_sample_fmt == AV_SAMPLE_FMT_NONE) {
2720 av_log(NULL, AV_LOG_ERROR, "Invalid sample format '%s'\n", arg);
2721 return AVERROR(EINVAL);
2722 }
2723 } else {
2724 int i;
2725 char fmt_str[128];
2726 for (i = -1; i < AV_SAMPLE_FMT_NB; i++)
2727 printf("%s\n", av_get_sample_fmt_string(fmt_str, sizeof(fmt_str), i));
2728 exit_program(0);
2729 }
2730 return 0;
2731 }
2732
2733 static int opt_audio_rate(const char *opt, const char *arg)
2734 {
2735 audio_sample_rate = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2736 return 0;
2737 }
2738
2739 static int opt_audio_channels(const char *opt, const char *arg)
2740 {
2741 audio_channels = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2742 return 0;
2743 }
2744
2745 static int opt_codec(int *pstream_copy, char **pcodec_name,
2746 int codec_type, const char *arg)
2747 {
2748 av_freep(pcodec_name);
2749 if (!strcmp(arg, "copy")) {
2750 *pstream_copy = 1;
2751 } else {
2752 *pcodec_name = av_strdup(arg);
2753 }
2754 return 0;
2755 }
2756
2757 static int opt_audio_codec(const char *opt, const char *arg)
2758 {
2759 return opt_codec(&audio_stream_copy, &audio_codec_name, AVMEDIA_TYPE_AUDIO, arg);
2760 }
2761
2762 static int opt_video_codec(const char *opt, const char *arg)
2763 {
2764 return opt_codec(&video_stream_copy, &video_codec_name, AVMEDIA_TYPE_VIDEO, arg);
2765 }
2766
2767 static int opt_subtitle_codec(const char *opt, const char *arg)
2768 {
2769 return opt_codec(&subtitle_stream_copy, &subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, arg);
2770 }
2771
2772 static int opt_data_codec(const char *opt, const char *arg)
2773 {
2774 return opt_codec(&data_stream_copy, &data_codec_name, AVMEDIA_TYPE_DATA, arg);
2775 }
2776
2777 static int opt_codec_tag(const char *opt, const char *arg)
2778 {
2779 char *tail;
2780 uint32_t *codec_tag;
2781
2782 codec_tag = !strcmp(opt, "atag") ? &audio_codec_tag :
2783 !strcmp(opt, "vtag") ? &video_codec_tag :
2784 !strcmp(opt, "stag") ? &subtitle_codec_tag : NULL;
2785 if (!codec_tag)
2786 return -1;
2787
2788 *codec_tag = strtol(arg, &tail, 0);
2789 if (!tail || *tail)
2790 *codec_tag = AV_RL32(arg);
2791
2792 return 0;
2793 }
2794
2795 static int opt_map(const char *opt, const char *arg)
2796 {
2797 StreamMap *m = NULL;
2798 int i, negative = 0, file_idx;
2799 int sync_file_idx = -1, sync_stream_idx;
2800 char *p, *sync;
2801 char *map;
2802
2803 if (*arg == '-') {
2804 negative = 1;
2805 arg++;
2806 }
2807 map = av_strdup(arg);
2808
2809 /* parse sync stream first, just pick first matching stream */
2810 if (sync = strchr(map, ',')) {
2811 *sync = 0;
2812 sync_file_idx = strtol(sync + 1, &sync, 0);
2813 if (sync_file_idx >= nb_input_files || sync_file_idx < 0) {
2814 av_log(NULL, AV_LOG_ERROR, "Invalid sync file index: %d.\n", sync_file_idx);
2815 exit_program(1);
2816 }
2817 if (*sync)
2818 sync++;
2819 for (i = 0; i < input_files[sync_file_idx].ctx->nb_streams; i++)
2820 if (check_stream_specifier(input_files[sync_file_idx].ctx,
2821 input_files[sync_file_idx].ctx->streams[i], sync) == 1) {
2822 sync_stream_idx = i;
2823 break;
2824 }
2825 if (i == input_files[sync_file_idx].ctx->nb_streams) {
2826 av_log(NULL, AV_LOG_ERROR, "Sync stream specification in map %s does not "
2827 "match any streams.\n", arg);
2828 exit_program(1);
2829 }
2830 }
2831
2832
2833 file_idx = strtol(map, &p, 0);
2834 if (file_idx >= nb_input_files || file_idx < 0) {
2835 av_log(NULL, AV_LOG_ERROR, "Invalid input file index: %d.\n", file_idx);
2836 exit_program(1);
2837 }
2838 if (negative)
2839 /* disable some already defined maps */
2840 for (i = 0; i < nb_stream_maps; i++) {
2841 m = &stream_maps[i];
2842 if (check_stream_specifier(input_files[m->file_index].ctx,
2843 input_files[m->file_index].ctx->streams[m->stream_index],
2844 *p == ':' ? p + 1 : p) > 0)
2845 m->disabled = 1;
2846 }
2847 else
2848 for (i = 0; i < input_files[file_idx].ctx->nb_streams; i++) {
2849 if (check_stream_specifier(input_files[file_idx].ctx, input_files[file_idx].ctx->streams[i],
2850 *p == ':' ? p + 1 : p) <= 0)
2851 continue;
2852 stream_maps = grow_array(stream_maps, sizeof(*stream_maps), &nb_stream_maps, nb_stream_maps + 1);
2853 m = &stream_maps[nb_stream_maps - 1];
2854
2855 m->file_index = file_idx;
2856 m->stream_index = i;
2857
2858 if (sync_file_idx >= 0) {
2859 m->sync_file_index = sync_file_idx;
2860 m->sync_stream_index = sync_stream_idx;
2861 } else {
2862 m->sync_file_index = file_idx;
2863 m->sync_stream_index = i;
2864 }
2865 }
2866
2867 if (!m) {
2868 av_log(NULL, AV_LOG_ERROR, "Stream map '%s' matches no streams.\n", arg);
2869 exit_program(1);
2870 }
2871
2872 av_freep(&map);
2873 return 0;
2874 }
2875
2876 static void parse_meta_type(char *arg, char *type, int *index)
2877 {
2878 if (*arg == ':') {
2879 *type = *(++arg);
2880 switch (*arg) {
2881 case 'g':
2882 break;
2883 case 's':
2884 case 'c':
2885 case 'p':
2886 if (*(++arg) == ':')
2887 *index = strtol(++arg, NULL, 0);
2888 break;
2889 default:
2890 fprintf(stderr, "Invalid metadata type %c.\n", *arg);
2891 exit_program(1);
2892 }
2893 } else
2894 *type = 'g';
2895 }
2896
2897 static int opt_map_metadata(const char *opt, const char *arg)
2898 {
2899 MetadataMap *m, *m1;
2900 char *p;
2901
2902 meta_data_maps = grow_array(meta_data_maps, sizeof(*meta_data_maps),
2903 &nb_meta_data_maps, nb_meta_data_maps + 1);
2904
2905 m = &meta_data_maps[nb_meta_data_maps - 1][1];
2906 m->file = strtol(arg, &p, 0);
2907 parse_meta_type(p, &m->type, &m->index);
2908
2909 m1 = &meta_data_maps[nb_meta_data_maps - 1][0];
2910 if (p = strchr(opt, ':'))
2911 parse_meta_type(p, &m1->type, &m1->index);
2912 else
2913 m1->type = 'g';
2914
2915 if (m->type == 'g' || m1->type == 'g')
2916 metadata_global_autocopy = 0;
2917 if (m->type == 's' || m1->type == 's')
2918 metadata_streams_autocopy = 0;
2919 if (m->type == 'c' || m1->type == 'c')
2920 metadata_chapters_autocopy = 0;
2921
2922 return 0;
2923 }
2924
2925 static int opt_input_ts_scale(const char *opt, const char *arg)
2926 {
2927 unsigned int stream;
2928 double scale;
2929 char *p;
2930
2931 stream = strtol(arg, &p, 0);
2932 if (*p)
2933 p++;
2934 scale= strtod(p, &p);
2935
2936 ts_scale = grow_array(ts_scale, sizeof(*ts_scale), &nb_ts_scale, stream + 1);
2937 ts_scale[stream] = scale;
2938 return 0;
2939 }
2940
2941 static int opt_recording_time(const char *opt, const char *arg)
2942 {
2943 recording_time = parse_time_or_die(opt, arg, 1);
2944 return 0;
2945 }
2946
2947 static int opt_start_time(const char *opt, const char *arg)
2948 {
2949 start_time = parse_time_or_die(opt, arg, 1);
2950 return 0;
2951 }
2952
2953 static int opt_input_ts_offset(const char *opt, const char *arg)
2954 {
2955 input_ts_offset = parse_time_or_die(opt, arg, 1);
2956 return 0;
2957 }
2958
2959 static enum CodecID find_codec_or_die(const char *name, int type, int encoder)
2960 {
2961 const char *codec_string = encoder ? "encoder" : "decoder";
2962 AVCodec *codec;
2963
2964 if(!name)
2965 return CODEC_ID_NONE;
2966 codec = encoder ?
2967 avcodec_find_encoder_by_name(name) :
2968 avcodec_find_decoder_by_name(name);
2969 if(!codec) {
2970 fprintf(stderr, "Unknown %s '%s'\n", codec_string, name);
2971 exit_program(1);
2972 }
2973 if(codec->type != type) {
2974 fprintf(stderr, "Invalid %s type '%s'\n", codec_string, name);
2975 exit_program(1);
2976 }
2977 return codec->id;
2978 }
2979
2980 static int opt_input_file(const char *opt, const char *filename)
2981 {
2982 AVFormatContext *ic;
2983 AVInputFormat *file_iformat = NULL;
2984 int err, i, ret, rfps, rfps_base;
2985 int64_t timestamp;
2986 uint8_t buf[128];
2987 AVDictionary **opts;
2988 int orig_nb_streams; // number of streams before avformat_find_stream_info
2989
2990 if (last_asked_format) {
2991 if (!(file_iformat = av_find_input_format(last_asked_format))) {
2992 fprintf(stderr, "Unknown input format: '%s'\n", last_asked_format);
2993 exit_program(1);
2994 }
2995 last_asked_format = NULL;
2996 }
2997
2998 if (!strcmp(filename, "-"))
2999 filename = "pipe:";
3000
3001 using_stdin |= !strncmp(filename, "pipe:", 5) ||
3002 !strcmp(filename, "/dev/stdin");
3003
3004 /* get default parameters from command line */
3005 ic = avformat_alloc_context();
3006 if (!ic) {
3007 print_error(filename, AVERROR(ENOMEM));
3008 exit_program(1);
3009 }
3010 if (audio_sample_rate) {
3011 snprintf(buf, sizeof(buf), "%d", audio_sample_rate);
3012 av_dict_set(&format_opts, "sample_rate", buf, 0);
3013 }
3014 if (audio_channels) {
3015 snprintf(buf, sizeof(buf), "%d", audio_channels);
3016 av_dict_set(&format_opts, "channels", buf, 0);
3017 }
3018 if (frame_rate.num) {
3019 snprintf(buf, sizeof(buf), "%d/%d", frame_rate.num, frame_rate.den);
3020 av_dict_set(&format_opts, "framerate", buf, 0);
3021 }
3022 if (frame_width && frame_height) {
3023 snprintf(buf, sizeof(buf), "%dx%d", frame_width, frame_height);
3024 av_dict_set(&format_opts, "video_size", buf, 0);
3025 }
3026 if (frame_pix_fmt != PIX_FMT_NONE)
3027 av_dict_set(&format_opts, "pixel_format", av_get_pix_fmt_name(frame_pix_fmt), 0);
3028
3029 ic->video_codec_id =
3030 find_codec_or_die(video_codec_name , AVMEDIA_TYPE_VIDEO , 0);
3031 ic->audio_codec_id =
3032 find_codec_or_die(audio_codec_name , AVMEDIA_TYPE_AUDIO , 0);
3033 ic->subtitle_codec_id=
3034 find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 0);
3035 ic->flags |= AVFMT_FLAG_NONBLOCK;
3036
3037 /* open the input file with generic libav function */
3038 err = avformat_open_input(&ic, filename, file_iformat, &format_opts);
3039 if (err < 0) {
3040 print_error(filename, err);
3041 exit_program(1);
3042 }
3043 assert_avoptions(format_opts);
3044
3045 if(opt_programid) {
3046 int i, j;
3047 int found=0;
3048 for(i=0; i<ic->nb_streams; i++){
3049 ic->streams[i]->discard= AVDISCARD_ALL;
3050 }
3051 for(i=0; i<ic->nb_programs; i++){
3052 AVProgram *p= ic->programs[i];
3053 if(p->id != opt_programid){
3054 p->discard = AVDISCARD_ALL;
3055 }else{
3056 found=1;
3057 for(j=0; j<p->nb_stream_indexes; j++){
3058 ic->streams[p->stream_index[j]]->discard= AVDISCARD_DEFAULT;
3059 }
3060 }
3061 }
3062 if(!found){
3063 fprintf(stderr, "Specified program id not found\n");
3064 exit_program(1);
3065 }
3066 opt_programid=0;
3067 }
3068
3069 /* Set AVCodecContext options for avformat_find_stream_info */
3070 opts = setup_find_stream_info_opts(ic, codec_opts);
3071 orig_nb_streams = ic->nb_streams;
3072
3073 /* If not enough info to get the stream parameters, we decode the
3074 first frames to get it. (used in mpeg case for example) */
3075 ret = avformat_find_stream_info(ic, opts);
3076 if (ret < 0 && verbose >= 0) {
3077 fprintf(stderr, "%s: could not find codec parameters\n", filename);
3078 av_close_input_file(ic);
3079 exit_program(1);
3080 }
3081
3082 timestamp = start_time;
3083 /* add the stream start time */
3084 if (ic->start_time != AV_NOPTS_VALUE)
3085 timestamp += ic->start_time;
3086
3087 /* if seeking requested, we execute it */
3088 if (start_time != 0) {
3089 ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
3090 if (ret < 0) {
3091 fprintf(stderr, "%s: could not seek to position %0.3f\n",
3092 filename, (double)timestamp / AV_TIME_BASE);
3093 }
3094 /* reset seek info */
3095 start_time = 0;
3096 }
3097
3098 /* update the current parameters so that they match the one of the input stream */
3099 for(i=0;i<ic->nb_streams;i++) {
3100 AVStream *st = ic->streams[i];
3101 AVCodecContext *dec = st->codec;
3102 InputStream *ist;
3103
3104 dec->thread_count = thread_count;
3105
3106 input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
3107 ist = &input_streams[nb_input_streams - 1];
3108 ist->st = st;
3109 ist->file_index = nb_input_files;
3110 ist->discard = 1;
3111 ist->opts = filter_codec_opts(codec_opts, ist->st->codec->codec_id, ic, st);
3112
3113 if (i < nb_ts_scale)
3114 ist->ts_scale = ts_scale[i];
3115
3116 switch (dec->codec_type) {
3117 case AVMEDIA_TYPE_AUDIO:
3118 ist->dec = avcodec_find_decoder_by_name(audio_codec_name);
3119 if(audio_disable)
3120 st->discard= AVDISCARD_ALL;
3121 break;
3122 case AVMEDIA_TYPE_VIDEO:
3123 ist->dec = avcodec_find_decoder_by_name(video_codec_name);
3124 rfps = ic->streams[i]->r_frame_rate.num;
3125 rfps_base = ic->streams[i]->r_frame_rate.den;
3126 if (dec->lowres) {
3127 dec->flags |= CODEC_FLAG_EMU_EDGE;
3128 dec->height >>= dec->lowres;
3129 dec->width >>= dec->lowres;
3130 }
3131 if(me_threshold)
3132 dec->debug |= FF_DEBUG_MV;
3133
3134 if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
3135
3136 if (verbose >= 0)
3137 fprintf(stderr,"\nSeems stream %d codec frame rate differs from container frame rate: %2.2f (%d/%d) -> %2.2f (%d/%d)\n",
3138 i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
3139
3140 (float)rfps / rfps_base, rfps, rfps_base);
3141 }
3142
3143 if(video_disable)
3144 st->discard= AVDISCARD_ALL;
3145 else if(video_discard)
3146 st->discard= video_discard;
3147 break;
3148 case AVMEDIA_TYPE_DATA:
3149 break;
3150 case AVMEDIA_TYPE_SUBTITLE:
3151 ist->dec = avcodec_find_decoder_by_name(subtitle_codec_name);
3152 if(subtitle_disable)
3153 st->discard = AVDISCARD_ALL;
3154 break;
3155 case AVMEDIA_TYPE_ATTACHMENT:
3156 case AVMEDIA_TYPE_UNKNOWN:
3157 break;
3158 default:
3159 abort();
3160 }
3161 }
3162
3163 /* dump the file content */
3164 if (verbose >= 0)
3165 av_dump_format(ic, nb_input_files, filename, 0);
3166
3167 input_files = grow_array(input_files, sizeof(*input_files), &nb_input_files, nb_input_files + 1);
3168 input_files[nb_input_files - 1].ctx = ic;
3169 input_files[nb_input_files - 1].ist_index = nb_input_streams - ic->nb_streams;
3170 input_files[nb_input_files - 1].ts_offset = input_ts_offset - (copy_ts ? 0 : timestamp);
3171
3172 frame_rate = (AVRational){0, 0};
3173 frame_pix_fmt = PIX_FMT_NONE;
3174 frame_height = 0;
3175 frame_width = 0;
3176 audio_sample_rate = 0;
3177 audio_channels = 0;
3178 audio_sample_fmt = AV_SAMPLE_FMT_NONE;
3179 av_freep(&ts_scale);
3180 nb_ts_scale = 0;
3181
3182 for (i = 0; i < orig_nb_streams; i++)
3183 av_dict_free(&opts[i]);
3184 av_freep(&opts);
3185 av_freep(&video_codec_name);
3186 av_freep(&audio_codec_name);
3187 av_freep(&subtitle_codec_name);
3188 uninit_opts();
3189 init_opts();
3190 return 0;
3191 }
3192
3193 static OutputStream *new_video_stream(AVFormatContext *oc, int file_idx)
3194 {
3195 AVStream *st;
3196 OutputStream *ost;
3197 AVCodecContext *video_enc;
3198 enum CodecID codec_id = CODEC_ID_NONE;
3199 AVCodec *codec= NULL;
3200
3201 if(!video_stream_copy){
3202 if (video_codec_name) {
3203 codec_id = find_codec_or_die(video_codec_name, AVMEDIA_TYPE_VIDEO, 1);
3204 codec = avcodec_find_encoder_by_name(video_codec_name);
3205 } else {
3206 codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_VIDEO);
3207 codec = avcodec_find_encoder(codec_id);
3208 }
3209 }
3210
3211 ost = new_output_stream(oc, file_idx, codec);
3212 st = ost->st;
3213 if (!video_stream_copy) {
3214 ost->frame_aspect_ratio = frame_aspect_ratio;
3215 frame_aspect_ratio = 0;
3216 #if CONFIG_AVFILTER
3217 ost->avfilter= vfilters;
3218 vfilters = NULL;
3219 #endif
3220 }
3221
3222 ost->bitstream_filters = video_bitstream_filters;
3223 video_bitstream_filters= NULL;
3224
3225 st->codec->thread_count= thread_count;
3226
3227 video_enc = st->codec;
3228
3229 if(video_codec_tag)
3230 video_enc->codec_tag= video_codec_tag;
3231
3232 if(oc->oformat->flags & AVFMT_GLOBALHEADER) {
3233 video_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3234 }
3235
3236 video_enc->codec_type = AVMEDIA_TYPE_VIDEO;
3237 if (video_stream_copy) {
3238 st->stream_copy = 1;
3239 video_enc->sample_aspect_ratio =
3240 st->sample_aspect_ratio = av_d2q(frame_aspect_ratio*frame_height/frame_width, 255);
3241 } else {
3242 const char *p;
3243 int i;
3244
3245 if (frame_rate.num)
3246 ost->frame_rate = frame_rate;
3247 video_enc->codec_id = codec_id;
3248
3249 video_enc->width = frame_width;
3250 video_enc->height = frame_height;
3251 video_enc->pix_fmt = frame_pix_fmt;
3252 st->sample_aspect_ratio = video_enc->sample_aspect_ratio;
3253
3254 if (intra_only)
3255 video_enc->gop_size = 0;
3256 if (video_qscale || same_quality) {
3257 video_enc->flags |= CODEC_FLAG_QSCALE;
3258 video_enc->global_quality = FF_QP2LAMBDA * video_qscale;
3259 }
3260
3261 if(intra_matrix)
3262 video_enc->intra_matrix = intra_matrix;
3263 if(inter_matrix)
3264 video_enc->inter_matrix = inter_matrix;
3265
3266 p= video_rc_override_string;
3267 for(i=0; p; i++){
3268 int start, end, q;
3269 int e=sscanf(p, "%d,%d,%d", &start, &end, &q);
3270 if(e!=3){
3271 fprintf(stderr, "error parsing rc_override\n");
3272 exit_program(1);
3273 }
3274 video_enc->rc_override=
3275 av_realloc(video_enc->rc_override,
3276 sizeof(RcOverride)*(i+1));
3277 video_enc->rc_override[i].start_frame= start;
3278 video_enc->rc_override[i].end_frame = end;
3279 if(q>0){
3280 video_enc->rc_override[i].qscale= q;
3281 video_enc->rc_override[i].quality_factor= 1.0;
3282 }
3283 else{
3284 video_enc->rc_override[i].qscale= 0;
3285 video_enc->rc_override[i].quality_factor= -q/100.0;
3286 }
3287 p= strchr(p, '/');
3288 if(p) p++;
3289 }
3290 video_enc->rc_override_count=i;
3291 if (!video_enc->rc_initial_buffer_occupancy)
3292 video_enc->rc_initial_buffer_occupancy = video_enc->rc_buffer_size*3/4;
3293 video_enc->me_threshold= me_threshold;
3294 video_enc->intra_dc_precision= intra_dc_precision - 8;
3295
3296 if (do_psnr)
3297 video_enc->flags|= CODEC_FLAG_PSNR;
3298
3299 /* two pass mode */
3300 if (do_pass) {
3301 if (do_pass == 1) {
3302 video_enc->flags |= CODEC_FLAG_PASS1;
3303 } else {
3304 video_enc->flags |= CODEC_FLAG_PASS2;
3305 }
3306 }
3307
3308 if (forced_key_frames)
3309 parse_forced_key_frames(forced_key_frames, ost, video_enc);
3310 }
3311 if (video_language) {
3312 av_dict_set(&st->metadata, "language", video_language, 0);
3313 av_freep(&video_language);
3314 }
3315
3316 /* reset some key parameters */
3317 video_disable = 0;
3318 av_freep(&video_codec_name);
3319 av_freep(&forced_key_frames);
3320 video_stream_copy = 0;
3321 frame_pix_fmt = PIX_FMT_NONE;
3322 return ost;
3323 }
3324
3325 static OutputStream *new_audio_stream(AVFormatContext *oc, int file_idx)
3326 {
3327 AVStream *st;
3328 OutputStream *ost;
3329 AVCodec *codec= NULL;
3330 AVCodecContext *audio_enc;
3331 enum CodecID codec_id = CODEC_ID_NONE;
3332
3333 if(!audio_stream_copy){
3334 if (audio_codec_name) {
3335 codec_id = find_codec_or_die(audio_codec_name, AVMEDIA_TYPE_AUDIO, 1);
3336 codec = avcodec_find_encoder_by_name(audio_codec_name);
3337 } else {
3338 codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_AUDIO);
3339 codec = avcodec_find_encoder(codec_id);
3340 }
3341 }
3342 ost = new_output_stream(oc, file_idx, codec);
3343 st = ost->st;
3344
3345 ost->bitstream_filters = audio_bitstream_filters;
3346 audio_bitstream_filters= NULL;
3347
3348 st->codec->thread_count= thread_count;
3349
3350 audio_enc = st->codec;
3351 audio_enc->codec_type = AVMEDIA_TYPE_AUDIO;
3352
3353 if(audio_codec_tag)
3354 audio_enc->codec_tag= audio_codec_tag;
3355
3356 if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3357 audio_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3358 }
3359 if (audio_stream_copy) {
3360 st->stream_copy = 1;
3361 } else {
3362 audio_enc->codec_id = codec_id;
3363
3364 if (audio_qscale > QSCALE_NONE) {
3365 audio_enc->flags |= CODEC_FLAG_QSCALE;
3366 audio_enc->global_quality = FF_QP2LAMBDA * audio_qscale;
3367 }
3368 if (audio_channels)
3369 audio_enc->channels = audio_channels;
3370 if (audio_sample_fmt != AV_SAMPLE_FMT_NONE)
3371 audio_enc->sample_fmt = audio_sample_fmt;
3372 if (audio_sample_rate)
3373 audio_enc->sample_rate = audio_sample_rate;
3374 }
3375 if (audio_language) {
3376 av_dict_set(&st->metadata, "language", audio_language, 0);
3377 av_freep(&audio_language);
3378 }
3379
3380 /* reset some key parameters */
3381 audio_disable = 0;
3382 av_freep(&audio_codec_name);
3383 audio_stream_copy = 0;
3384
3385 return ost;
3386 }
3387
3388 static OutputStream *new_data_stream(AVFormatContext *oc, int file_idx)
3389 {
3390 AVStream *st;
3391 OutputStream *ost;
3392 AVCodecContext *data_enc;
3393
3394 ost = new_output_stream(oc, file_idx, NULL);
3395 st = ost->st;
3396 data_enc = st->codec;
3397 if (!data_stream_copy) {
3398 fprintf(stderr, "Data stream encoding not supported yet (only streamcopy)\n");
3399 exit_program(1);
3400 }
3401
3402 data_enc->codec_type = AVMEDIA_TYPE_DATA;
3403
3404 if (data_codec_tag)
3405 data_enc->codec_tag= data_codec_tag;
3406
3407 if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3408 data_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3409 }
3410 if (data_stream_copy) {
3411 st->stream_copy = 1;
3412 }
3413
3414 data_disable = 0;
3415 av_freep(&data_codec_name);
3416 data_stream_copy = 0;
3417 return ost;
3418 }
3419
3420 static OutputStream *new_subtitle_stream(AVFormatContext *oc, int file_idx)
3421 {
3422 AVStream *st;
3423 OutputStream *ost;
3424 AVCodec *codec=NULL;
3425 AVCodecContext *subtitle_enc;
3426 enum CodecID codec_id = CODEC_ID_NONE;
3427
3428 if(!subtitle_stream_copy){
3429 if (subtitle_codec_name) {
3430 codec_id = find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 1);
3431 codec = avcodec_find_encoder_by_name(subtitle_codec_name);
3432 } else {
3433 codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_SUBTITLE);
3434 codec = avcodec_find_encoder(codec_id);
3435 }
3436 }
3437 ost = new_output_stream(oc, file_idx, codec);
3438 st = ost->st;
3439 subtitle_enc = st->codec;
3440
3441 ost->bitstream_filters = subtitle_bitstream_filters;
3442 subtitle_bitstream_filters= NULL;
3443
3444 subtitle_enc->codec_type = AVMEDIA_TYPE_SUBTITLE;
3445
3446 if(subtitle_codec_tag)
3447 subtitle_enc->codec_tag= subtitle_codec_tag;
3448
3449 if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3450 subtitle_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3451 }
3452 if (subtitle_stream_copy) {
3453 st->stream_copy = 1;
3454 } else {
3455 subtitle_enc->codec_id = codec_id;
3456 }
3457
3458 if (subtitle_language) {
3459 av_dict_set(&st->metadata, "language", subtitle_language, 0);
3460 av_freep(&subtitle_language);
3461 }
3462
3463 subtitle_disable = 0;
3464 av_freep(&subtitle_codec_name);
3465 subtitle_stream_copy = 0;
3466 return ost;
3467 }
3468
3469 /* arg format is "output-stream-index:streamid-value". */
3470 static int opt_streamid(const char *opt, const char *arg)
3471 {
3472 int idx;
3473 char *p;
3474 char idx_str[16];
3475
3476 av_strlcpy(idx_str, arg, sizeof(idx_str));
3477 p = strchr(idx_str, ':');
3478 if (!p) {
3479 fprintf(stderr,
3480 "Invalid value '%s' for option '%s', required syntax is 'index:value'\n",
3481 arg, opt);
3482 exit_program(1);
3483 }
3484 *p++ = '\0';
3485 idx = parse_number_or_die(opt, idx_str, OPT_INT, 0, INT_MAX);
3486 streamid_map = grow_array(streamid_map, sizeof(*streamid_map), &nb_streamid_map, idx+1);
3487 streamid_map[idx] = parse_number_or_die(opt, p, OPT_INT, 0, INT_MAX);
3488 return 0;
3489 }
3490
3491 static void opt_output_file(const char *filename)
3492 {
3493 AVFormatContext *oc;
3494 int i, err;
3495 AVOutputFormat *file_oformat;
3496 OutputStream *ost;
3497 InputStream *ist;
3498
3499 if (!strcmp(filename, "-"))
3500 filename = "pipe:";
3501
3502 oc = avformat_alloc_context();
3503 if (!oc) {
3504 print_error(filename, AVERROR(ENOMEM));
3505 exit_program(1);
3506 }
3507
3508 if (last_asked_format) {
3509 file_oformat = av_guess_format(last_asked_format, NULL, NULL);
3510 if (!file_oformat) {
3511 fprintf(stderr, "Requested output format '%s' is not a suitable output format\n", last_asked_format);
3512 exit_program(1);
3513 }
3514 last_asked_format = NULL;
3515 } else {
3516 file_oformat = av_guess_format(NULL, filename, NULL);
3517 if (!file_oformat) {
3518 fprintf(stderr, "Unable to find a suitable output format for '%s'\n",
3519 filename);
3520 exit_program(1);
3521 }
3522 }
3523
3524 oc->oformat = file_oformat;
3525 av_strlcpy(oc->filename, filename, sizeof(oc->filename));
3526
3527 if (!strcmp(file_oformat->name, "ffm") &&
3528 av_strstart(filename, "http:", NULL)) {
3529 /* special case for files sent to avserver: we get the stream
3530 parameters from avserver */
3531 int err = read_avserver_streams(oc, filename);
3532 if (err < 0) {
3533 print_error(filename, err);
3534 exit_program(1);
3535 }
3536 } else if (!nb_stream_maps) {
3537 /* pick the "best" stream of each type */
3538 #define NEW_STREAM(type, index)\
3539 if (index >= 0) {\
3540 ost = new_ ## type ## _stream(oc, nb_output_files);\
3541 ost->source_index = index;\
3542 ost->sync_ist = &input_streams[index];\
3543 input_streams[index].discard = 0;\
3544 }
3545
3546 /* video: highest resolution */
3547 if (!video_disable && oc->oformat->video_codec != CODEC_ID_NONE) {
3548 int area = 0, idx = -1;
3549 for (i = 0; i < nb_input_streams; i++) {
3550 ist = &input_streams[i];
3551 if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
3552 ist->st->codec->width * ist->st->codec->height > area) {
3553 area = ist->st->codec->width * ist->st->codec->height;
3554 idx = i;
3555 }
3556 }
3557 NEW_STREAM(video, idx);
3558 }
3559
3560 /* audio: most channels */
3561 if (!audio_disable && oc->oformat->audio_codec != CODEC_ID_NONE) {
3562 int channels = 0, idx = -1;
3563 for (i = 0; i < nb_input_streams; i++) {
3564 ist = &input_streams[i];
3565 if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
3566 ist->st->codec->channels > channels) {
3567 channels = ist->st->codec->channels;
3568 idx = i;
3569 }
3570 }
3571 NEW_STREAM(audio, idx);
3572 }
3573
3574 /* subtitles: pick first */
3575 if (!subtitle_disable && oc->oformat->subtitle_codec != CODEC_ID_NONE) {
3576 for (i = 0; i < nb_input_streams; i++)
3577 if (input_streams[i].st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3578 NEW_STREAM(subtitle, i);
3579 break;
3580 }
3581 }
3582 /* do something with data? */
3583 } else {
3584 for (i = 0; i < nb_stream_maps; i++) {
3585 StreamMap *map = &stream_maps[i];
3586
3587 if (map->disabled)
3588 continue;
3589
3590 ist = &input_streams[input_files[map->file_index].ist_index + map->stream_index];
3591 switch (ist->st->codec->codec_type) {
3592 case AVMEDIA_TYPE_VIDEO: ost = new_video_stream(oc, nb_output_files); break;
3593 case AVMEDIA_TYPE_AUDIO: ost = new_audio_stream(oc, nb_output_files); break;
3594 case AVMEDIA_TYPE_SUBTITLE: ost = new_subtitle_stream(oc, nb_output_files); break;
3595 case AVMEDIA_TYPE_DATA: ost = new_data_stream(oc, nb_output_files); break;
3596 default:
3597 av_log(NULL, AV_LOG_ERROR, "Cannot map stream #%d.%d - unsupported type.\n",
3598 map->file_index, map->stream_index);
3599 exit_program(1);
3600 }
3601
3602 ost->source_index = input_files[map->file_index].ist_index + map->stream_index;
3603 ost->sync_ist = &input_streams[input_files[map->sync_file_index].ist_index +
3604 map->sync_stream_index];
3605 ist->discard = 0;
3606 }
3607 }
3608
3609 av_dict_copy(&oc->metadata, metadata, 0);
3610 av_dict_free(&metadata);
3611
3612 av_dict_copy(&output_opts[nb_output_files], format_opts, 0);
3613 output_files[nb_output_files++] = oc;
3614
3615 /* check filename in case of an image number is expected */
3616 if (oc->oformat->flags & AVFMT_NEEDNUMBER) {
3617 if (!av_filename_number_test(oc->filename)) {
3618 print_error(oc->filename, AVERROR(EINVAL));
3619 exit_program(1);
3620 }
3621 }
3622
3623 if (!(oc->oformat->flags & AVFMT_NOFILE)) {
3624 /* test if it already exists to avoid loosing precious files */
3625 if (!file_overwrite &&
3626 (strchr(filename, ':') == NULL ||
3627 filename[1] == ':' ||
3628 av_strstart(filename, "file:", NULL))) {
3629 if (avio_check(filename, 0) == 0) {
3630 if (!using_stdin) {
3631 fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
3632 fflush(stderr);
3633 if (!read_yesno()) {
3634 fprintf(stderr, "Not overwriting - exiting\n");
3635 exit_program(1);
3636 }
3637 }
3638 else {
3639 fprintf(stderr,"File '%s' already exists. Exiting.\n", filename);
3640 exit_program(1);
3641 }
3642 }
3643 }
3644
3645 /* open the file */
3646 if ((err = avio_open(&oc->pb, filename, AVIO_FLAG_WRITE)) < 0) {
3647 print_error(filename, err);
3648 exit_program(1);
3649 }
3650 }
3651
3652 oc->preload= (int)(mux_preload*AV_TIME_BASE);
3653 oc->max_delay= (int)(mux_max_delay*AV_TIME_BASE);
3654 oc->flags |= AVFMT_FLAG_NONBLOCK;
3655
3656 /* copy chapters */
3657 if (chapters_input_file >= nb_input_files) {
3658 if (chapters_input_file == INT_MAX) {
3659 /* copy chapters from the first input file that has them*/
3660 chapters_input_file = -1;
3661 for (i = 0; i < nb_input_files; i++)
3662 if (input_files[i].ctx->nb_chapters) {
3663 chapters_input_file = i;
3664 break;
3665 }
3666 } else {
3667