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ab0b689a6ca3dee9dceab10da63950dd3aa99ed0
[libav.git] / ffmpeg.c
1 /*
2 * FFmpeg main
3 * Copyright (c) 2000-2003 Fabrice Bellard
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg 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 * FFmpeg 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 FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21 #define HAVE_AV_CONFIG_H
22 #include <signal.h>
23 #include <limits.h>
24 #include "avformat.h"
25 #include "swscale.h"
26 #include "framehook.h"
27 #include "dsputil.h"
28 #include "opt.h"
29 #include "fifo.h"
30
31 #ifdef __MINGW32__
32 #include <conio.h>
33 #else
34 #include <unistd.h>
35 #include <fcntl.h>
36 #include <sys/ioctl.h>
37 #include <sys/time.h>
38 #include <termios.h>
39 #include <sys/resource.h>
40 #endif
41 #ifdef CONFIG_OS2
42 #include <sys/types.h>
43 #include <sys/select.h>
44 #include <stdlib.h>
45 #endif
46 #undef time //needed because HAVE_AV_CONFIG_H is defined on top
47 #include <time.h>
48
49 #include "version.h"
50 #include "cmdutils.h"
51
52 #undef NDEBUG
53 #include <assert.h>
54
55 #if !defined(INFINITY) && defined(HUGE_VAL)
56 #define INFINITY HUGE_VAL
57 #endif
58
59 /* select an input stream for an output stream */
60 typedef struct AVStreamMap {
61 int file_index;
62 int stream_index;
63 int sync_file_index;
64 int sync_stream_index;
65 } AVStreamMap;
66
67 /** select an input file for an output file */
68 typedef struct AVMetaDataMap {
69 int out_file;
70 int in_file;
71 } AVMetaDataMap;
72
73 extern const OptionDef options[];
74
75 static void show_help(void);
76 static void show_license(void);
77 static int opt_default(const char *opt, const char *arg);
78
79 #define MAX_FILES 20
80
81 static AVFormatContext *input_files[MAX_FILES];
82 static int64_t input_files_ts_offset[MAX_FILES];
83 static int nb_input_files = 0;
84
85 static AVFormatContext *output_files[MAX_FILES];
86 static int nb_output_files = 0;
87
88 static AVStreamMap stream_maps[MAX_FILES];
89 static int nb_stream_maps;
90
91 static AVMetaDataMap meta_data_maps[MAX_FILES];
92 static int nb_meta_data_maps;
93
94 static AVInputFormat *file_iformat;
95 static AVOutputFormat *file_oformat;
96 static int frame_width = 0;
97 static int frame_height = 0;
98 static float frame_aspect_ratio = 0;
99 static enum PixelFormat frame_pix_fmt = PIX_FMT_NONE;
100 static int frame_padtop = 0;
101 static int frame_padbottom = 0;
102 static int frame_padleft = 0;
103 static int frame_padright = 0;
104 static int padcolor[3] = {16,128,128}; /* default to black */
105 static int frame_topBand = 0;
106 static int frame_bottomBand = 0;
107 static int frame_leftBand = 0;
108 static int frame_rightBand = 0;
109 static int max_frames[4] = {INT_MAX, INT_MAX, INT_MAX, INT_MAX};
110 static int frame_rate = 25;
111 static int frame_rate_base = 1;
112 static float video_qscale = 0;
113 static int video_qdiff = 3;
114 static uint16_t *intra_matrix = NULL;
115 static uint16_t *inter_matrix = NULL;
116 #if 0 //experimental, (can be removed)
117 static float video_rc_qsquish=1.0;
118 static float video_rc_qmod_amp=0;
119 static int video_rc_qmod_freq=0;
120 #endif
121 static char *video_rc_override_string=NULL;
122 static char *video_rc_eq="tex^qComp";
123 static int me_method = ME_EPZS;
124 static int video_disable = 0;
125 static int video_discard = 0;
126 static int video_codec_id = CODEC_ID_NONE;
127 static int video_codec_tag = 0;
128 static int same_quality = 0;
129 static int do_deinterlace = 0;
130 static int packet_size = 0;
131 static int strict = 0;
132 static int top_field_first = -1;
133 static int me_threshold = 0;
134 static int intra_dc_precision = 8;
135 static int loop_input = 0;
136 static int loop_output = AVFMT_NOOUTPUTLOOP;
137 static int qp_hist = 0;
138
139 static int intra_only = 0;
140 static int audio_sample_rate = 44100;
141 static int audio_bit_rate = 64000;
142 #define QSCALE_NONE -99999
143 static float audio_qscale = QSCALE_NONE;
144 static int audio_disable = 0;
145 static int audio_channels = 1;
146 static int audio_codec_id = CODEC_ID_NONE;
147 static int audio_codec_tag = 0;
148 static char *audio_language = NULL;
149
150 static int subtitle_codec_id = CODEC_ID_NONE;
151 static char *subtitle_language = NULL;
152
153 static float mux_preload= 0.5;
154 static float mux_max_delay= 0.7;
155
156 static int64_t recording_time = 0;
157 static int64_t start_time = 0;
158 static int64_t rec_timestamp = 0;
159 static int64_t input_ts_offset = 0;
160 static int file_overwrite = 0;
161 static char *str_title = NULL;
162 static char *str_author = NULL;
163 static char *str_copyright = NULL;
164 static char *str_comment = NULL;
165 static char *str_album = NULL;
166 static int do_benchmark = 0;
167 static int do_hex_dump = 0;
168 static int do_pkt_dump = 0;
169 static int do_psnr = 0;
170 static int do_vstats = 0;
171 static int do_pass = 0;
172 static char *pass_logfilename = NULL;
173 static int audio_stream_copy = 0;
174 static int video_stream_copy = 0;
175 static int subtitle_stream_copy = 0;
176 static int video_sync_method= 1;
177 static int audio_sync_method= 0;
178 static int copy_ts= 0;
179 static int opt_shortest = 0; //
180 static int video_global_header = 0;
181
182 static int rate_emu = 0;
183
184 #ifdef CONFIG_BKTR
185 static const char *video_grab_format = "bktr";
186 #else
187 #ifdef CONFIG_VIDEO4LINUX2
188 static const char *video_grab_format = "video4linux2";
189 #else
190 static const char *video_grab_format = "video4linux";
191 #endif
192 #endif
193 static char *video_device = NULL;
194 static char *grab_device = NULL;
195 static int video_channel = 0;
196 static char *video_standard = "ntsc";
197
198 static const char *audio_grab_format = "audio_device";
199 static char *audio_device = NULL;
200 static int audio_volume = 256;
201
202 static int using_stdin = 0;
203 static int using_vhook = 0;
204 static int verbose = 1;
205 static int thread_count= 1;
206 static int q_pressed = 0;
207 static int64_t video_size = 0;
208 static int64_t audio_size = 0;
209 static int64_t extra_size = 0;
210 static int nb_frames_dup = 0;
211 static int nb_frames_drop = 0;
212 static int input_sync;
213 static int limit_filesize = 0; //
214
215 static int pgmyuv_compatibility_hack=0;
216 static int dts_delta_threshold = 10;
217
218 static int sws_flags = SWS_BICUBIC;
219
220 const char **opt_names=NULL;
221 int opt_name_count=0;
222 AVCodecContext *avctx_opts;
223 AVFormatContext *avformat_opts;
224
225 static AVBitStreamFilterContext *video_bitstream_filters=NULL;
226 static AVBitStreamFilterContext *audio_bitstream_filters=NULL;
227 static AVBitStreamFilterContext *bitstream_filters[MAX_FILES][MAX_STREAMS];
228
229 #define DEFAULT_PASS_LOGFILENAME "ffmpeg2pass"
230
231 struct AVInputStream;
232
233 typedef struct AVOutputStream {
234 int file_index; /* file index */
235 int index; /* stream index in the output file */
236 int source_index; /* AVInputStream index */
237 AVStream *st; /* stream in the output file */
238 int encoding_needed; /* true if encoding needed for this stream */
239 int frame_number;
240 /* input pts and corresponding output pts
241 for A/V sync */
242 //double sync_ipts; /* dts from the AVPacket of the demuxer in second units */
243 struct AVInputStream *sync_ist; /* input stream to sync against */
244 int64_t sync_opts; /* output frame counter, could be changed to some true timestamp */ //FIXME look at frame_number
245 /* video only */
246 int video_resample;
247 AVFrame pict_tmp; /* temporary image for resampling */
248 struct SwsContext *img_resample_ctx; /* for image resampling */
249 int resample_height;
250
251 int video_crop;
252 int topBand; /* cropping area sizes */
253 int leftBand;
254
255 int video_pad;
256 int padtop; /* padding area sizes */
257 int padbottom;
258 int padleft;
259 int padright;
260
261 /* audio only */
262 int audio_resample;
263 ReSampleContext *resample; /* for audio resampling */
264 AVFifoBuffer fifo; /* for compression: one audio fifo per codec */
265 FILE *logfile;
266 } AVOutputStream;
267
268 typedef struct AVInputStream {
269 int file_index;
270 int index;
271 AVStream *st;
272 int discard; /* true if stream data should be discarded */
273 int decoding_needed; /* true if the packets must be decoded in 'raw_fifo' */
274 int64_t sample_index; /* current sample */
275
276 int64_t start; /* time when read started */
277 unsigned long frame; /* current frame */
278 int64_t next_pts; /* synthetic pts for cases where pkt.pts
279 is not defined */
280 int64_t pts; /* current pts */
281 int is_start; /* is 1 at the start and after a discontinuity */
282 } AVInputStream;
283
284 typedef struct AVInputFile {
285 int eof_reached; /* true if eof reached */
286 int ist_index; /* index of first stream in ist_table */
287 int buffer_size; /* current total buffer size */
288 int buffer_size_max; /* buffer size at which we consider we can stop
289 buffering */
290 int nb_streams; /* nb streams we are aware of */
291 } AVInputFile;
292
293 #ifndef __MINGW32__
294
295 /* init terminal so that we can grab keys */
296 static struct termios oldtty;
297 #endif
298
299 static void term_exit(void)
300 {
301 #ifndef __MINGW32__
302 tcsetattr (0, TCSANOW, &oldtty);
303 #endif
304 }
305
306 static volatile sig_atomic_t received_sigterm = 0;
307
308 static void
309 sigterm_handler(int sig)
310 {
311 received_sigterm = sig;
312 term_exit();
313 }
314
315 static void term_init(void)
316 {
317 #ifndef __MINGW32__
318 struct termios tty;
319
320 tcgetattr (0, &tty);
321 oldtty = tty;
322
323 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
324 |INLCR|IGNCR|ICRNL|IXON);
325 tty.c_oflag |= OPOST;
326 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
327 tty.c_cflag &= ~(CSIZE|PARENB);
328 tty.c_cflag |= CS8;
329 tty.c_cc[VMIN] = 1;
330 tty.c_cc[VTIME] = 0;
331
332 tcsetattr (0, TCSANOW, &tty);
333 signal(SIGQUIT, sigterm_handler); /* Quit (POSIX). */
334 #endif
335
336 signal(SIGINT , sigterm_handler); /* Interrupt (ANSI). */
337 signal(SIGTERM, sigterm_handler); /* Termination (ANSI). */
338 /*
339 register a function to be called at normal program termination
340 */
341 atexit(term_exit);
342 #ifdef CONFIG_BEOS_NETSERVER
343 fcntl(0, F_SETFL, fcntl(0, F_GETFL) | O_NONBLOCK);
344 #endif
345 }
346
347 /* read a key without blocking */
348 static int read_key(void)
349 {
350 #ifdef __MINGW32__
351 if(kbhit())
352 return(getch());
353 #else
354 int n = 1;
355 unsigned char ch;
356 #ifndef CONFIG_BEOS_NETSERVER
357 struct timeval tv;
358 fd_set rfds;
359
360 FD_ZERO(&rfds);
361 FD_SET(0, &rfds);
362 tv.tv_sec = 0;
363 tv.tv_usec = 0;
364 n = select(1, &rfds, NULL, NULL, &tv);
365 #endif
366 if (n > 0) {
367 n = read(0, &ch, 1);
368 if (n == 1)
369 return ch;
370
371 return n;
372 }
373 #endif
374 return -1;
375 }
376
377 static int decode_interrupt_cb(void)
378 {
379 return q_pressed || (q_pressed = read_key() == 'q');
380 }
381
382 static int read_ffserver_streams(AVFormatContext *s, const char *filename)
383 {
384 int i, err;
385 AVFormatContext *ic;
386
387 err = av_open_input_file(&ic, filename, NULL, FFM_PACKET_SIZE, NULL);
388 if (err < 0)
389 return err;
390 /* copy stream format */
391 s->nb_streams = ic->nb_streams;
392 for(i=0;i<ic->nb_streams;i++) {
393 AVStream *st;
394
395 // FIXME: a more elegant solution is needed
396 st = av_mallocz(sizeof(AVStream));
397 memcpy(st, ic->streams[i], sizeof(AVStream));
398 st->codec = avcodec_alloc_context();
399 memcpy(st->codec, ic->streams[i]->codec, sizeof(AVCodecContext));
400 s->streams[i] = st;
401 }
402
403 av_close_input_file(ic);
404 return 0;
405 }
406
407 static double
408 get_sync_ipts(const AVOutputStream *ost)
409 {
410 const AVInputStream *ist = ost->sync_ist;
411 return (double)(ist->pts + input_files_ts_offset[ist->file_index] - start_time)/AV_TIME_BASE;
412 }
413
414 static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc){
415 while(bsfc){
416 AVPacket new_pkt= *pkt;
417 int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
418 &new_pkt.data, &new_pkt.size,
419 pkt->data, pkt->size,
420 pkt->flags & PKT_FLAG_KEY);
421 if(a){
422 av_free_packet(pkt);
423 new_pkt.destruct= av_destruct_packet;
424 }
425 *pkt= new_pkt;
426
427 bsfc= bsfc->next;
428 }
429
430 av_interleaved_write_frame(s, pkt);
431 }
432
433 #define MAX_AUDIO_PACKET_SIZE (128 * 1024)
434
435 static void do_audio_out(AVFormatContext *s,
436 AVOutputStream *ost,
437 AVInputStream *ist,
438 unsigned char *buf, int size)
439 {
440 uint8_t *buftmp;
441 static uint8_t *audio_buf = NULL;
442 static uint8_t *audio_out = NULL;
443 const int audio_out_size= 4*MAX_AUDIO_PACKET_SIZE;
444
445 int size_out, frame_bytes, ret;
446 AVCodecContext *enc= ost->st->codec;
447
448 /* SC: dynamic allocation of buffers */
449 if (!audio_buf)
450 audio_buf = av_malloc(2*MAX_AUDIO_PACKET_SIZE);
451 if (!audio_out)
452 audio_out = av_malloc(audio_out_size);
453 if (!audio_buf || !audio_out)
454 return; /* Should signal an error ! */
455
456 if(audio_sync_method){
457 double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
458 - av_fifo_size(&ost->fifo)/(ost->st->codec->channels * 2);
459 double idelta= delta*ist->st->codec->sample_rate / enc->sample_rate;
460 int byte_delta= ((int)idelta)*2*ist->st->codec->channels;
461
462 //FIXME resample delay
463 if(fabs(delta) > 50){
464 if(ist->is_start){
465 if(byte_delta < 0){
466 byte_delta= FFMAX(byte_delta, -size);
467 size += byte_delta;
468 buf -= byte_delta;
469 if(verbose > 2)
470 fprintf(stderr, "discarding %d audio samples\n", (int)-delta);
471 if(!size)
472 return;
473 ist->is_start=0;
474 }else{
475 static uint8_t *input_tmp= NULL;
476 input_tmp= av_realloc(input_tmp, byte_delta + size);
477
478 if(byte_delta + size <= MAX_AUDIO_PACKET_SIZE)
479 ist->is_start=0;
480 else
481 byte_delta= MAX_AUDIO_PACKET_SIZE - size;
482
483 memset(input_tmp, 0, byte_delta);
484 memcpy(input_tmp + byte_delta, buf, size);
485 buf= input_tmp;
486 size += byte_delta;
487 if(verbose > 2)
488 fprintf(stderr, "adding %d audio samples of silence\n", (int)delta);
489 }
490 }else if(audio_sync_method>1){
491 int comp= clip(delta, -audio_sync_method, audio_sync_method);
492 assert(ost->audio_resample);
493 if(verbose > 2)
494 fprintf(stderr, "compensating audio timestamp drift:%f compensation:%d in:%d\n", delta, comp, enc->sample_rate);
495 // 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));
496 av_resample_compensate(*(struct AVResampleContext**)ost->resample, comp, enc->sample_rate);
497 }
498 }
499 }else
500 ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
501 - av_fifo_size(&ost->fifo)/(ost->st->codec->channels * 2); //FIXME wrong
502
503 if (ost->audio_resample) {
504 buftmp = audio_buf;
505 size_out = audio_resample(ost->resample,
506 (short *)buftmp, (short *)buf,
507 size / (ist->st->codec->channels * 2));
508 size_out = size_out * enc->channels * 2;
509 } else {
510 buftmp = buf;
511 size_out = size;
512 }
513
514 /* now encode as many frames as possible */
515 if (enc->frame_size > 1) {
516 /* output resampled raw samples */
517 av_fifo_write(&ost->fifo, buftmp, size_out);
518
519 frame_bytes = enc->frame_size * 2 * enc->channels;
520
521 while (av_fifo_read(&ost->fifo, audio_buf, frame_bytes) == 0) {
522 AVPacket pkt;
523 av_init_packet(&pkt);
524
525 ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
526 (short *)audio_buf);
527 audio_size += ret;
528 pkt.stream_index= ost->index;
529 pkt.data= audio_out;
530 pkt.size= ret;
531 if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
532 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
533 pkt.flags |= PKT_FLAG_KEY;
534 write_frame(s, &pkt, ost->st->codec, bitstream_filters[ost->file_index][pkt.stream_index]);
535
536 ost->sync_opts += enc->frame_size;
537 }
538 } else {
539 AVPacket pkt;
540 av_init_packet(&pkt);
541
542 ost->sync_opts += size_out / (2 * enc->channels);
543
544 /* output a pcm frame */
545 /* XXX: change encoding codec API to avoid this ? */
546 switch(enc->codec->id) {
547 case CODEC_ID_PCM_S32LE:
548 case CODEC_ID_PCM_S32BE:
549 case CODEC_ID_PCM_U32LE:
550 case CODEC_ID_PCM_U32BE:
551 size_out = size_out << 1;
552 break;
553 case CODEC_ID_PCM_S24LE:
554 case CODEC_ID_PCM_S24BE:
555 case CODEC_ID_PCM_U24LE:
556 case CODEC_ID_PCM_U24BE:
557 case CODEC_ID_PCM_S24DAUD:
558 size_out = size_out / 2 * 3;
559 break;
560 case CODEC_ID_PCM_S16LE:
561 case CODEC_ID_PCM_S16BE:
562 case CODEC_ID_PCM_U16LE:
563 case CODEC_ID_PCM_U16BE:
564 break;
565 default:
566 size_out = size_out >> 1;
567 break;
568 }
569 ret = avcodec_encode_audio(enc, audio_out, size_out,
570 (short *)buftmp);
571 audio_size += ret;
572 pkt.stream_index= ost->index;
573 pkt.data= audio_out;
574 pkt.size= ret;
575 if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
576 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
577 pkt.flags |= PKT_FLAG_KEY;
578 write_frame(s, &pkt, ost->st->codec, bitstream_filters[ost->file_index][pkt.stream_index]);
579 }
580 }
581
582 static void pre_process_video_frame(AVInputStream *ist, AVPicture *picture, void **bufp)
583 {
584 AVCodecContext *dec;
585 AVPicture *picture2;
586 AVPicture picture_tmp;
587 uint8_t *buf = 0;
588
589 dec = ist->st->codec;
590
591 /* deinterlace : must be done before any resize */
592 if (do_deinterlace || using_vhook) {
593 int size;
594
595 /* create temporary picture */
596 size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
597 buf = av_malloc(size);
598 if (!buf)
599 return;
600
601 picture2 = &picture_tmp;
602 avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
603
604 if (do_deinterlace){
605 if(avpicture_deinterlace(picture2, picture,
606 dec->pix_fmt, dec->width, dec->height) < 0) {
607 /* if error, do not deinterlace */
608 av_free(buf);
609 buf = NULL;
610 picture2 = picture;
611 }
612 } else {
613 img_copy(picture2, picture, dec->pix_fmt, dec->width, dec->height);
614 }
615 } else {
616 picture2 = picture;
617 }
618
619 frame_hook_process(picture2, dec->pix_fmt, dec->width, dec->height);
620
621 if (picture != picture2)
622 *picture = *picture2;
623 *bufp = buf;
624 }
625
626 /* we begin to correct av delay at this threshold */
627 #define AV_DELAY_MAX 0.100
628
629 static void do_subtitle_out(AVFormatContext *s,
630 AVOutputStream *ost,
631 AVInputStream *ist,
632 AVSubtitle *sub,
633 int64_t pts)
634 {
635 static uint8_t *subtitle_out = NULL;
636 int subtitle_out_max_size = 65536;
637 int subtitle_out_size, nb, i;
638 AVCodecContext *enc;
639 AVPacket pkt;
640
641 if (pts == AV_NOPTS_VALUE) {
642 fprintf(stderr, "Subtitle packets must have a pts\n");
643 return;
644 }
645
646 enc = ost->st->codec;
647
648 if (!subtitle_out) {
649 subtitle_out = av_malloc(subtitle_out_max_size);
650 }
651
652 /* Note: DVB subtitle need one packet to draw them and one other
653 packet to clear them */
654 /* XXX: signal it in the codec context ? */
655 if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
656 nb = 2;
657 else
658 nb = 1;
659
660 for(i = 0; i < nb; i++) {
661 subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
662 subtitle_out_max_size, sub);
663
664 av_init_packet(&pkt);
665 pkt.stream_index = ost->index;
666 pkt.data = subtitle_out;
667 pkt.size = subtitle_out_size;
668 pkt.pts = av_rescale_q(av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q) + input_files_ts_offset[ist->file_index], AV_TIME_BASE_Q, ost->st->time_base);
669 if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
670 /* XXX: the pts correction is handled here. Maybe handling
671 it in the codec would be better */
672 if (i == 0)
673 pkt.pts += 90 * sub->start_display_time;
674 else
675 pkt.pts += 90 * sub->end_display_time;
676 }
677 write_frame(s, &pkt, ost->st->codec, bitstream_filters[ost->file_index][pkt.stream_index]);
678 }
679 }
680
681 static int bit_buffer_size= 1024*256;
682 static uint8_t *bit_buffer= NULL;
683
684 static void do_video_out(AVFormatContext *s,
685 AVOutputStream *ost,
686 AVInputStream *ist,
687 AVFrame *in_picture,
688 int *frame_size)
689 {
690 int nb_frames, i, ret;
691 AVFrame *final_picture, *formatted_picture, *resampling_dst, *padding_src;
692 AVFrame picture_crop_temp, picture_pad_temp;
693 uint8_t *buf = NULL, *buf1 = NULL;
694 AVCodecContext *enc, *dec;
695
696 avcodec_get_frame_defaults(&picture_crop_temp);
697 avcodec_get_frame_defaults(&picture_pad_temp);
698
699 enc = ost->st->codec;
700 dec = ist->st->codec;
701
702 /* by default, we output a single frame */
703 nb_frames = 1;
704
705 *frame_size = 0;
706
707 if(video_sync_method){
708 double vdelta;
709 vdelta = get_sync_ipts(ost) / av_q2d(enc->time_base) - ost->sync_opts;
710 //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
711 if (vdelta < -1.1)
712 nb_frames = 0;
713 else if (vdelta > 1.1)
714 nb_frames = lrintf(vdelta);
715 //fprintf(stderr, "vdelta:%f, ost->sync_opts:%"PRId64", ost->sync_ipts:%f nb_frames:%d\n", vdelta, ost->sync_opts, ost->sync_ipts, nb_frames);
716 if (nb_frames == 0){
717 ++nb_frames_drop;
718 if (verbose>2)
719 fprintf(stderr, "*** drop!\n");
720 }else if (nb_frames > 1) {
721 nb_frames_dup += nb_frames;
722 if (verbose>2)
723 fprintf(stderr, "*** %d dup!\n", nb_frames-1);
724 }
725 }else
726 ost->sync_opts= lrintf(get_sync_ipts(ost) / av_q2d(enc->time_base));
727
728 nb_frames= FFMIN(nb_frames, max_frames[CODEC_TYPE_VIDEO] - ost->frame_number);
729 if (nb_frames <= 0)
730 return;
731
732 if (ost->video_crop) {
733 if (img_crop((AVPicture *)&picture_crop_temp, (AVPicture *)in_picture, dec->pix_fmt, ost->topBand, ost->leftBand) < 0) {
734 av_log(NULL, AV_LOG_ERROR, "error cropping picture\n");
735 goto the_end;
736 }
737 formatted_picture = &picture_crop_temp;
738 } else {
739 formatted_picture = in_picture;
740 }
741
742 final_picture = formatted_picture;
743 padding_src = formatted_picture;
744 resampling_dst = &ost->pict_tmp;
745 if (ost->video_pad) {
746 final_picture = &ost->pict_tmp;
747 if (ost->video_resample) {
748 if (img_crop((AVPicture *)&picture_pad_temp, (AVPicture *)final_picture, enc->pix_fmt, ost->padtop, ost->padleft) < 0) {
749 av_log(NULL, AV_LOG_ERROR, "error padding picture\n");
750 goto the_end;
751 }
752 resampling_dst = &picture_pad_temp;
753 }
754 }
755
756 if (ost->video_resample) {
757 padding_src = NULL;
758 final_picture = &ost->pict_tmp;
759 sws_scale(ost->img_resample_ctx, formatted_picture->data, formatted_picture->linesize,
760 0, ost->resample_height, resampling_dst->data, resampling_dst->linesize);
761 }
762
763 if (ost->video_pad) {
764 img_pad((AVPicture*)final_picture, (AVPicture *)padding_src,
765 enc->height, enc->width, enc->pix_fmt,
766 ost->padtop, ost->padbottom, ost->padleft, ost->padright, padcolor);
767 }
768
769 /* duplicates frame if needed */
770 for(i=0;i<nb_frames;i++) {
771 AVPacket pkt;
772 av_init_packet(&pkt);
773 pkt.stream_index= ost->index;
774
775 if (s->oformat->flags & AVFMT_RAWPICTURE) {
776 /* raw pictures are written as AVPicture structure to
777 avoid any copies. We support temorarily the older
778 method. */
779 AVFrame* old_frame = enc->coded_frame;
780 enc->coded_frame = dec->coded_frame; //FIXME/XXX remove this hack
781 pkt.data= (uint8_t *)final_picture;
782 pkt.size= sizeof(AVPicture);
783 if(dec->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
784 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
785 if(dec->coded_frame && dec->coded_frame->key_frame)
786 pkt.flags |= PKT_FLAG_KEY;
787
788 write_frame(s, &pkt, ost->st->codec, bitstream_filters[ost->file_index][pkt.stream_index]);
789 enc->coded_frame = old_frame;
790 } else {
791 AVFrame big_picture;
792
793 big_picture= *final_picture;
794 /* better than nothing: use input picture interlaced
795 settings */
796 big_picture.interlaced_frame = in_picture->interlaced_frame;
797 if(avctx_opts->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)){
798 if(top_field_first == -1)
799 big_picture.top_field_first = in_picture->top_field_first;
800 else
801 big_picture.top_field_first = top_field_first;
802 }
803
804 /* handles sameq here. This is not correct because it may
805 not be a global option */
806 if (same_quality) {
807 big_picture.quality = ist->st->quality;
808 }else
809 big_picture.quality = ost->st->quality;
810 if(!me_threshold)
811 big_picture.pict_type = 0;
812 // big_picture.pts = AV_NOPTS_VALUE;
813 big_picture.pts= ost->sync_opts;
814 // big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
815 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
816 ret = avcodec_encode_video(enc,
817 bit_buffer, bit_buffer_size,
818 &big_picture);
819 if (ret == -1) {
820 fprintf(stderr, "Video encoding failed\n");
821 exit(1);
822 }
823 //enc->frame_number = enc->real_pict_num;
824 if(ret>0){
825 pkt.data= bit_buffer;
826 pkt.size= ret;
827 if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
828 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
829 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
830 pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
831 pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
832
833 if(enc->coded_frame && enc->coded_frame->key_frame)
834 pkt.flags |= PKT_FLAG_KEY;
835 write_frame(s, &pkt, ost->st->codec, bitstream_filters[ost->file_index][pkt.stream_index]);
836 *frame_size = ret;
837 //fprintf(stderr,"\nFrame: %3d %3d size: %5d type: %d",
838 // enc->frame_number-1, enc->real_pict_num, ret,
839 // enc->pict_type);
840 /* if two pass, output log */
841 if (ost->logfile && enc->stats_out) {
842 fprintf(ost->logfile, "%s", enc->stats_out);
843 }
844 }
845 }
846 ost->sync_opts++;
847 ost->frame_number++;
848 }
849 the_end:
850 av_free(buf);
851 av_free(buf1);
852 }
853
854 static double psnr(double d){
855 if(d==0) return INFINITY;
856 return -10.0*log(d)/log(10.0);
857 }
858
859 static void do_video_stats(AVFormatContext *os, AVOutputStream *ost,
860 int frame_size)
861 {
862 static FILE *fvstats=NULL;
863 char filename[40];
864 time_t today2;
865 struct tm *today;
866 AVCodecContext *enc;
867 int frame_number;
868 int64_t ti;
869 double ti1, bitrate, avg_bitrate;
870
871 if (!fvstats) {
872 today2 = time(NULL);
873 today = localtime(&today2);
874 snprintf(filename, sizeof(filename), "vstats_%02d%02d%02d.log", today->tm_hour,
875 today->tm_min,
876 today->tm_sec);
877 fvstats = fopen(filename,"w");
878 if (!fvstats) {
879 perror("fopen");
880 exit(1);
881 }
882 }
883
884 ti = MAXINT64;
885 enc = ost->st->codec;
886 if (enc->codec_type == CODEC_TYPE_VIDEO) {
887 frame_number = ost->frame_number;
888 fprintf(fvstats, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
889 if (enc->flags&CODEC_FLAG_PSNR)
890 fprintf(fvstats, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
891
892 fprintf(fvstats,"f_size= %6d ", frame_size);
893 /* compute pts value */
894 ti1 = ost->sync_opts * av_q2d(enc->time_base);
895 if (ti1 < 0.01)
896 ti1 = 0.01;
897
898 bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
899 avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
900 fprintf(fvstats, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
901 (double)video_size / 1024, ti1, bitrate, avg_bitrate);
902 fprintf(fvstats,"type= %c\n", av_get_pict_type_char(enc->coded_frame->pict_type));
903 }
904 }
905
906 static void print_report(AVFormatContext **output_files,
907 AVOutputStream **ost_table, int nb_ostreams,
908 int is_last_report)
909 {
910 char buf[1024];
911 AVOutputStream *ost;
912 AVFormatContext *oc, *os;
913 int64_t total_size;
914 AVCodecContext *enc;
915 int frame_number, vid, i;
916 double bitrate, ti1, pts;
917 static int64_t last_time = -1;
918 static int qp_histogram[52];
919
920 if (!is_last_report) {
921 int64_t cur_time;
922 /* display the report every 0.5 seconds */
923 cur_time = av_gettime();
924 if (last_time == -1) {
925 last_time = cur_time;
926 return;
927 }
928 if ((cur_time - last_time) < 500000)
929 return;
930 last_time = cur_time;
931 }
932
933
934 oc = output_files[0];
935
936 total_size = url_ftell(&oc->pb);
937
938 buf[0] = '\0';
939 ti1 = 1e10;
940 vid = 0;
941 for(i=0;i<nb_ostreams;i++) {
942 ost = ost_table[i];
943 os = output_files[ost->file_index];
944 enc = ost->st->codec;
945 if (vid && enc->codec_type == CODEC_TYPE_VIDEO) {
946 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ",
947 enc->coded_frame->quality/(float)FF_QP2LAMBDA);
948 }
949 if (!vid && enc->codec_type == CODEC_TYPE_VIDEO) {
950 frame_number = ost->frame_number;
951 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d q=%3.1f ",
952 frame_number, enc->coded_frame ? enc->coded_frame->quality/(float)FF_QP2LAMBDA : -1);
953 if(is_last_report)
954 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
955 if(qp_hist && enc->coded_frame){
956 int j;
957 int qp= lrintf(enc->coded_frame->quality/(float)FF_QP2LAMBDA);
958 if(qp>=0 && qp<sizeof(qp_histogram)/sizeof(int))
959 qp_histogram[qp]++;
960 for(j=0; j<32; j++)
961 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
962 }
963 if (enc->flags&CODEC_FLAG_PSNR){
964 int j;
965 double error, error_sum=0;
966 double scale, scale_sum=0;
967 char type[3]= {'Y','U','V'};
968 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
969 for(j=0; j<3; j++){
970 if(is_last_report){
971 error= enc->error[j];
972 scale= enc->width*enc->height*255.0*255.0*frame_number;
973 }else{
974 error= enc->coded_frame->error[j];
975 scale= enc->width*enc->height*255.0*255.0;
976 }
977 if(j) scale/=4;
978 error_sum += error;
979 scale_sum += scale;
980 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
981 }
982 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
983 }
984 vid = 1;
985 }
986 /* compute min output value */
987 pts = (double)ost->st->pts.val * ost->st->time_base.num / ost->st->time_base.den;
988 if ((pts < ti1) && (pts > 0))
989 ti1 = pts;
990 }
991 if (ti1 < 0.01)
992 ti1 = 0.01;
993
994 if (verbose || is_last_report) {
995 bitrate = (double)(total_size * 8) / ti1 / 1000.0;
996
997 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
998 "size=%8.0fkB time=%0.1f bitrate=%6.1fkbits/s",
999 (double)total_size / 1024, ti1, bitrate);
1000
1001 if (verbose > 1)
1002 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1003 nb_frames_dup, nb_frames_drop);
1004
1005 if (verbose >= 0)
1006 fprintf(stderr, "%s \r", buf);
1007
1008 fflush(stderr);
1009 }
1010
1011 if (is_last_report && verbose >= 0){
1012 int64_t raw= audio_size + video_size + extra_size;
1013 fprintf(stderr, "\n");
1014 fprintf(stderr, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1015 video_size/1024.0,
1016 audio_size/1024.0,
1017 extra_size/1024.0,
1018 100.0*(total_size - raw)/raw
1019 );
1020 }
1021 }
1022
1023 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1024 static int output_packet(AVInputStream *ist, int ist_index,
1025 AVOutputStream **ost_table, int nb_ostreams,
1026 const AVPacket *pkt)
1027 {
1028 AVFormatContext *os;
1029 AVOutputStream *ost;
1030 uint8_t *ptr;
1031 int len, ret, i;
1032 uint8_t *data_buf;
1033 int data_size, got_picture;
1034 AVFrame picture;
1035 void *buffer_to_free;
1036 static unsigned int samples_size= 0;
1037 static short *samples= NULL;
1038 AVSubtitle subtitle, *subtitle_to_free;
1039 int got_subtitle;
1040
1041 if(!pkt){
1042 ist->pts= ist->next_pts; // needed for last packet if vsync=0
1043 } else if (pkt->dts != AV_NOPTS_VALUE) { //FIXME seems redundant, as libavformat does this too
1044 ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1045 } else {
1046 // assert(ist->pts == ist->next_pts);
1047 }
1048
1049 if (pkt == NULL) {
1050 /* EOF handling */
1051 ptr = NULL;
1052 len = 0;
1053 goto handle_eof;
1054 }
1055
1056 len = pkt->size;
1057 ptr = pkt->data;
1058 while (len > 0) {
1059 handle_eof:
1060 /* decode the packet if needed */
1061 data_buf = NULL; /* fail safe */
1062 data_size = 0;
1063 subtitle_to_free = NULL;
1064 if (ist->decoding_needed) {
1065 switch(ist->st->codec->codec_type) {
1066 case CODEC_TYPE_AUDIO:{
1067 if(pkt)
1068 samples= av_fast_realloc(samples, &samples_size, FFMAX(pkt->size, AVCODEC_MAX_AUDIO_FRAME_SIZE));
1069 /* XXX: could avoid copy if PCM 16 bits with same
1070 endianness as CPU */
1071 ret = avcodec_decode_audio(ist->st->codec, samples, &data_size,
1072 ptr, len);
1073 if (ret < 0)
1074 goto fail_decode;
1075 ptr += ret;
1076 len -= ret;
1077 /* Some bug in mpeg audio decoder gives */
1078 /* data_size < 0, it seems they are overflows */
1079 if (data_size <= 0) {
1080 /* no audio frame */
1081 continue;
1082 }
1083 data_buf = (uint8_t *)samples;
1084 ist->next_pts += ((int64_t)AV_TIME_BASE/2 * data_size) /
1085 (ist->st->codec->sample_rate * ist->st->codec->channels);
1086 break;}
1087 case CODEC_TYPE_VIDEO:
1088 data_size = (ist->st->codec->width * ist->st->codec->height * 3) / 2;
1089 /* XXX: allocate picture correctly */
1090 avcodec_get_frame_defaults(&picture);
1091
1092 ret = avcodec_decode_video(ist->st->codec,
1093 &picture, &got_picture, ptr, len);
1094 ist->st->quality= picture.quality;
1095 if (ret < 0)
1096 goto fail_decode;
1097 if (!got_picture) {
1098 /* no picture yet */
1099 goto discard_packet;
1100 }
1101 if (ist->st->codec->time_base.num != 0) {
1102 ist->next_pts += ((int64_t)AV_TIME_BASE *
1103 ist->st->codec->time_base.num) /
1104 ist->st->codec->time_base.den;
1105 }
1106 len = 0;
1107 break;
1108 case CODEC_TYPE_SUBTITLE:
1109 ret = avcodec_decode_subtitle(ist->st->codec,
1110 &subtitle, &got_subtitle, ptr, len);
1111 if (ret < 0)
1112 goto fail_decode;
1113 if (!got_subtitle) {
1114 goto discard_packet;
1115 }
1116 subtitle_to_free = &subtitle;
1117 len = 0;
1118 break;
1119 default:
1120 goto fail_decode;
1121 }
1122 } else {
1123 switch(ist->st->codec->codec_type) {
1124 case CODEC_TYPE_AUDIO:
1125 ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1126 (ist->st->codec->sample_rate * ist->st->codec->channels);
1127 break;
1128 case CODEC_TYPE_VIDEO:
1129 if (ist->st->codec->time_base.num != 0) {
1130 ist->next_pts += ((int64_t)AV_TIME_BASE *
1131 ist->st->codec->time_base.num) /
1132 ist->st->codec->time_base.den;
1133 }
1134 break;
1135 }
1136 data_buf = ptr;
1137 data_size = len;
1138 ret = len;
1139 len = 0;
1140 }
1141
1142 buffer_to_free = NULL;
1143 if (ist->st->codec->codec_type == CODEC_TYPE_VIDEO) {
1144 pre_process_video_frame(ist, (AVPicture *)&picture,
1145 &buffer_to_free);
1146 }
1147
1148 // preprocess audio (volume)
1149 if (ist->st->codec->codec_type == CODEC_TYPE_AUDIO) {
1150 if (audio_volume != 256) {
1151 short *volp;
1152 volp = samples;
1153 for(i=0;i<(data_size / sizeof(short));i++) {
1154 int v = ((*volp) * audio_volume + 128) >> 8;
1155 if (v < -32768) v = -32768;
1156 if (v > 32767) v = 32767;
1157 *volp++ = v;
1158 }
1159 }
1160 }
1161
1162 /* frame rate emulation */
1163 if (ist->st->codec->rate_emu) {
1164 int64_t pts = av_rescale((int64_t) ist->frame * ist->st->codec->time_base.num, 1000000, ist->st->codec->time_base.den);
1165 int64_t now = av_gettime() - ist->start;
1166 if (pts > now)
1167 usleep(pts - now);
1168
1169 ist->frame++;
1170 }
1171
1172 #if 0
1173 /* mpeg PTS deordering : if it is a P or I frame, the PTS
1174 is the one of the next displayed one */
1175 /* XXX: add mpeg4 too ? */
1176 if (ist->st->codec->codec_id == CODEC_ID_MPEG1VIDEO) {
1177 if (ist->st->codec->pict_type != B_TYPE) {
1178 int64_t tmp;
1179 tmp = ist->last_ip_pts;
1180 ist->last_ip_pts = ist->frac_pts.val;
1181 ist->frac_pts.val = tmp;
1182 }
1183 }
1184 #endif
1185 /* if output time reached then transcode raw format,
1186 encode packets and output them */
1187 if (start_time == 0 || ist->pts >= start_time)
1188 for(i=0;i<nb_ostreams;i++) {
1189 int frame_size;
1190
1191 ost = ost_table[i];
1192 if (ost->source_index == ist_index) {
1193 os = output_files[ost->file_index];
1194
1195 #if 0
1196 printf("%d: got pts=%0.3f %0.3f\n", i,
1197 (double)pkt->pts / AV_TIME_BASE,
1198 ((double)ist->pts / AV_TIME_BASE) -
1199 ((double)ost->st->pts.val * ost->st->time_base.num / ost->st->time_base.den));
1200 #endif
1201 /* set the input output pts pairs */
1202 //ost->sync_ipts = (double)(ist->pts + input_files_ts_offset[ist->file_index] - start_time)/ AV_TIME_BASE;
1203
1204 if (ost->encoding_needed) {
1205 switch(ost->st->codec->codec_type) {
1206 case CODEC_TYPE_AUDIO:
1207 do_audio_out(os, ost, ist, data_buf, data_size);
1208 break;
1209 case CODEC_TYPE_VIDEO:
1210 do_video_out(os, ost, ist, &picture, &frame_size);
1211 video_size += frame_size;
1212 if (do_vstats && frame_size)
1213 do_video_stats(os, ost, frame_size);
1214 break;
1215 case CODEC_TYPE_SUBTITLE:
1216 do_subtitle_out(os, ost, ist, &subtitle,
1217 pkt->pts);
1218 break;
1219 default:
1220 av_abort();
1221 }
1222 } else {
1223 AVFrame avframe; //FIXME/XXX remove this
1224 AVPacket opkt;
1225 av_init_packet(&opkt);
1226
1227 /* no reencoding needed : output the packet directly */
1228 /* force the input stream PTS */
1229
1230 avcodec_get_frame_defaults(&avframe);
1231 ost->st->codec->coded_frame= &avframe;
1232 avframe.key_frame = pkt->flags & PKT_FLAG_KEY;
1233
1234 if(ost->st->codec->codec_type == CODEC_TYPE_AUDIO)
1235 audio_size += data_size;
1236 else if (ost->st->codec->codec_type == CODEC_TYPE_VIDEO) {
1237 video_size += data_size;
1238 ost->sync_opts++;
1239 }
1240
1241 opkt.stream_index= ost->index;
1242 if(pkt->pts != AV_NOPTS_VALUE)
1243 opkt.pts= av_rescale_q(av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q) + input_files_ts_offset[ist->file_index], AV_TIME_BASE_Q, ost->st->time_base);
1244 else
1245 opkt.pts= AV_NOPTS_VALUE;
1246
1247 {
1248 int64_t dts;
1249 if (pkt->dts == AV_NOPTS_VALUE)
1250 dts = ist->next_pts;
1251 else
1252 dts= av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1253 opkt.dts= av_rescale_q(dts + input_files_ts_offset[ist->file_index], AV_TIME_BASE_Q, ost->st->time_base);
1254 }
1255 opkt.flags= pkt->flags;
1256
1257 //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1258 if(av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, data_buf, data_size, pkt->flags & PKT_FLAG_KEY))
1259 opkt.destruct= av_destruct_packet;
1260
1261 write_frame(os, &opkt, ost->st->codec, bitstream_filters[ost->file_index][pkt->stream_index]);
1262 ost->st->codec->frame_number++;
1263 ost->frame_number++;
1264 av_free_packet(&opkt);
1265 }
1266 }
1267 }
1268 av_free(buffer_to_free);
1269 /* XXX: allocate the subtitles in the codec ? */
1270 if (subtitle_to_free) {
1271 if (subtitle_to_free->rects != NULL) {
1272 for (i = 0; i < subtitle_to_free->num_rects; i++) {
1273 av_free(subtitle_to_free->rects[i].bitmap);
1274 av_free(subtitle_to_free->rects[i].rgba_palette);
1275 }
1276 av_freep(&subtitle_to_free->rects);
1277 }
1278 subtitle_to_free->num_rects = 0;
1279 subtitle_to_free = NULL;
1280 }
1281 }
1282 discard_packet:
1283 if (pkt == NULL) {
1284 /* EOF handling */
1285
1286 for(i=0;i<nb_ostreams;i++) {
1287 ost = ost_table[i];
1288 if (ost->source_index == ist_index) {
1289 AVCodecContext *enc= ost->st->codec;
1290 os = output_files[ost->file_index];
1291
1292 if(ost->st->codec->codec_type == CODEC_TYPE_AUDIO && enc->frame_size <=1)
1293 continue;
1294 if(ost->st->codec->codec_type == CODEC_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE))
1295 continue;
1296
1297 if (ost->encoding_needed) {
1298 for(;;) {
1299 AVPacket pkt;
1300 int fifo_bytes;
1301 av_init_packet(&pkt);
1302 pkt.stream_index= ost->index;
1303
1304 switch(ost->st->codec->codec_type) {
1305 case CODEC_TYPE_AUDIO:
1306 fifo_bytes = av_fifo_size(&ost->fifo);
1307 ret = 0;
1308 /* encode any samples remaining in fifo */
1309 if(fifo_bytes > 0 && enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1310 int fs_tmp = enc->frame_size;
1311 enc->frame_size = fifo_bytes / (2 * enc->channels);
1312 if(av_fifo_read(&ost->fifo, (uint8_t *)samples, fifo_bytes) == 0) {
1313 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, samples);
1314 }
1315 enc->frame_size = fs_tmp;
1316 }
1317 if(ret <= 0) {
1318 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1319 }
1320 audio_size += ret;
1321 pkt.flags |= PKT_FLAG_KEY;
1322 break;
1323 case CODEC_TYPE_VIDEO:
1324 ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1325 video_size += ret;
1326 if(enc->coded_frame && enc->coded_frame->key_frame)
1327 pkt.flags |= PKT_FLAG_KEY;
1328 if (ost->logfile && enc->stats_out) {
1329 fprintf(ost->logfile, "%s", enc->stats_out);
1330 }
1331 break;
1332 default:
1333 ret=-1;
1334 }
1335
1336 if(ret<=0)
1337 break;
1338 pkt.data= bit_buffer;
1339 pkt.size= ret;
1340 if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1341 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1342 write_frame(os, &pkt, ost->st->codec, bitstream_filters[ost->file_index][pkt.stream_index]);
1343 }
1344 }
1345 }
1346 }
1347 }
1348
1349 return 0;
1350 fail_decode:
1351 return -1;
1352 }
1353
1354
1355 /*
1356 * The following code is the main loop of the file converter
1357 */
1358 static int av_encode(AVFormatContext **output_files,
1359 int nb_output_files,
1360 AVFormatContext **input_files,
1361 int nb_input_files,
1362 AVStreamMap *stream_maps, int nb_stream_maps)
1363 {
1364 int ret, i, j, k, n, nb_istreams = 0, nb_ostreams = 0;
1365 AVFormatContext *is, *os;
1366 AVCodecContext *codec, *icodec;
1367 AVOutputStream *ost, **ost_table = NULL;
1368 AVInputStream *ist, **ist_table = NULL;
1369 AVInputFile *file_table;
1370 AVFormatContext *stream_no_data;
1371 int key;
1372
1373 file_table= (AVInputFile*) av_mallocz(nb_input_files * sizeof(AVInputFile));
1374 if (!file_table)
1375 goto fail;
1376
1377 /* input stream init */
1378 j = 0;
1379 for(i=0;i<nb_input_files;i++) {
1380 is = input_files[i];
1381 file_table[i].ist_index = j;
1382 file_table[i].nb_streams = is->nb_streams;
1383 j += is->nb_streams;
1384 }
1385 nb_istreams = j;
1386
1387 ist_table = av_mallocz(nb_istreams * sizeof(AVInputStream *));
1388 if (!ist_table)
1389 goto fail;
1390
1391 for(i=0;i<nb_istreams;i++) {
1392 ist = av_mallocz(sizeof(AVInputStream));
1393 if (!ist)
1394 goto fail;
1395 ist_table[i] = ist;
1396 }
1397 j = 0;
1398 for(i=0;i<nb_input_files;i++) {
1399 is = input_files[i];
1400 for(k=0;k<is->nb_streams;k++) {
1401 ist = ist_table[j++];
1402 ist->st = is->streams[k];
1403 ist->file_index = i;
1404 ist->index = k;
1405 ist->discard = 1; /* the stream is discarded by default
1406 (changed later) */
1407
1408 if (ist->st->codec->rate_emu) {
1409 ist->start = av_gettime();
1410 ist->frame = 0;
1411 }
1412 }
1413 }
1414
1415 /* output stream init */
1416 nb_ostreams = 0;
1417 for(i=0;i<nb_output_files;i++) {
1418 os = output_files[i];
1419 if (!os->nb_streams) {
1420 fprintf(stderr, "Output file does not contain any stream\n");
1421 exit(1);
1422 }
1423 nb_ostreams += os->nb_streams;
1424 }
1425 if (nb_stream_maps > 0 && nb_stream_maps != nb_ostreams) {
1426 fprintf(stderr, "Number of stream maps must match number of output streams\n");
1427 exit(1);
1428 }
1429
1430 /* Sanity check the mapping args -- do the input files & streams exist? */
1431 for(i=0;i<nb_stream_maps;i++) {
1432 int fi = stream_maps[i].file_index;
1433 int si = stream_maps[i].stream_index;
1434
1435 if (fi < 0 || fi > nb_input_files - 1 ||
1436 si < 0 || si > file_table[fi].nb_streams - 1) {
1437 fprintf(stderr,"Could not find input stream #%d.%d\n", fi, si);
1438 exit(1);
1439 }
1440 fi = stream_maps[i].sync_file_index;
1441 si = stream_maps[i].sync_stream_index;
1442 if (fi < 0 || fi > nb_input_files - 1 ||
1443 si < 0 || si > file_table[fi].nb_streams - 1) {
1444 fprintf(stderr,"Could not find sync stream #%d.%d\n", fi, si);
1445 exit(1);
1446 }
1447 }
1448
1449 ost_table = av_mallocz(sizeof(AVOutputStream *) * nb_ostreams);
1450 if (!ost_table)
1451 goto fail;
1452 for(i=0;i<nb_ostreams;i++) {
1453 ost = av_mallocz(sizeof(AVOutputStream));
1454 if (!ost)
1455 goto fail;
1456 ost_table[i] = ost;
1457 }
1458
1459 n = 0;
1460 for(k=0;k<nb_output_files;k++) {
1461 os = output_files[k];
1462 for(i=0;i<os->nb_streams;i++) {
1463 int found;
1464 ost = ost_table[n++];
1465 ost->file_index = k;
1466 ost->index = i;
1467 ost->st = os->streams[i];
1468 if (nb_stream_maps > 0) {
1469 ost->source_index = file_table[stream_maps[n-1].file_index].ist_index +
1470 stream_maps[n-1].stream_index;
1471
1472 /* Sanity check that the stream types match */
1473 if (ist_table[ost->source_index]->st->codec->codec_type != ost->st->codec->codec_type) {
1474 fprintf(stderr, "Codec type mismatch for mapping #%d.%d -> #%d.%d\n",
1475 stream_maps[n-1].file_index, stream_maps[n-1].stream_index,
1476 ost->file_index, ost->index);
1477 exit(1);
1478 }
1479
1480 } else {
1481 /* get corresponding input stream index : we select the first one with the right type */
1482 found = 0;
1483 for(j=0;j<nb_istreams;j++) {
1484 ist = ist_table[j];
1485 if (ist->discard &&
1486 ist->st->codec->codec_type == ost->st->codec->codec_type) {
1487 ost->source_index = j;
1488 found = 1;
1489 break;
1490 }
1491 }
1492
1493 if (!found) {
1494 /* try again and reuse existing stream */
1495 for(j=0;j<nb_istreams;j++) {
1496 ist = ist_table[j];
1497 if (ist->st->codec->codec_type == ost->st->codec->codec_type) {
1498 ost->source_index = j;
1499 found = 1;
1500 }
1501 }
1502 if (!found) {
1503 fprintf(stderr, "Could not find input stream matching output stream #%d.%d\n",
1504 ost->file_index, ost->index);
1505 exit(1);
1506 }
1507 }
1508 }
1509 ist = ist_table[ost->source_index];
1510 ist->discard = 0;
1511 ost->sync_ist = (nb_stream_maps > 0) ?
1512 ist_table[file_table[stream_maps[n-1].sync_file_index].ist_index +
1513 stream_maps[n-1].sync_stream_index] : ist;
1514 }
1515 }
1516
1517 /* for each output stream, we compute the right encoding parameters */
1518 for(i=0;i<nb_ostreams;i++) {
1519 ost = ost_table[i];
1520 ist = ist_table[ost->source_index];
1521
1522 codec = ost->st->codec;
1523 icodec = ist->st->codec;
1524
1525 if (ost->st->stream_copy) {
1526 /* if stream_copy is selected, no need to decode or encode */
1527 codec->codec_id = icodec->codec_id;
1528 codec->codec_type = icodec->codec_type;
1529 if(!codec->codec_tag) codec->codec_tag = icodec->codec_tag;
1530 codec->bit_rate = icodec->bit_rate;
1531 codec->extradata= icodec->extradata;
1532 codec->extradata_size= icodec->extradata_size;
1533 if(av_q2d(icodec->time_base) > av_q2d(ist->st->time_base) && av_q2d(ist->st->time_base) < 1.0/1000)
1534 codec->time_base = icodec->time_base;
1535 else
1536 codec->time_base = ist->st->time_base;
1537 switch(codec->codec_type) {
1538 case CODEC_TYPE_AUDIO:
1539 codec->sample_rate = icodec->sample_rate;
1540 codec->channels = icodec->channels;
1541 codec->frame_size = icodec->frame_size;
1542 codec->block_align= icodec->block_align;
1543 break;
1544 case CODEC_TYPE_VIDEO:
1545 codec->pix_fmt = icodec->pix_fmt;
1546 codec->width = icodec->width;
1547 codec->height = icodec->height;
1548 codec->has_b_frames = icodec->has_b_frames;
1549 break;
1550 case CODEC_TYPE_SUBTITLE:
1551 break;
1552 default:
1553 av_abort();
1554 }
1555 } else {
1556 switch(codec->codec_type) {
1557 case CODEC_TYPE_AUDIO:
1558 if (av_fifo_init(&ost->fifo, 2 * MAX_AUDIO_PACKET_SIZE))
1559 goto fail;
1560
1561 if (codec->channels == icodec->channels &&
1562 codec->sample_rate == icodec->sample_rate) {
1563 ost->audio_resample = 0;
1564 } else {
1565 if (codec->channels != icodec->channels &&
1566 (icodec->codec_id == CODEC_ID_AC3 ||
1567 icodec->codec_id == CODEC_ID_DTS)) {
1568 /* Special case for 5:1 AC3 and DTS input */
1569 /* and mono or stereo output */
1570 /* Request specific number of channels */
1571 icodec->channels = codec->channels;
1572 if (codec->sample_rate == icodec->sample_rate)
1573 ost->audio_resample = 0;
1574 else {
1575 ost->audio_resample = 1;
1576 }
1577 } else {
1578 ost->audio_resample = 1;
1579 }
1580 }
1581 if(audio_sync_method>1)
1582 ost->audio_resample = 1;
1583
1584 if(ost->audio_resample){
1585 ost->resample = audio_resample_init(codec->channels, icodec->channels,
1586 codec->sample_rate, icodec->sample_rate);
1587 if(!ost->resample){
1588 printf("Can't resample. Aborting.\n");
1589 av_abort();
1590 }
1591 }
1592 ist->decoding_needed = 1;
1593 ost->encoding_needed = 1;
1594 break;
1595 case CODEC_TYPE_VIDEO:
1596 ost->video_crop = ((frame_leftBand + frame_rightBand + frame_topBand + frame_bottomBand) != 0);
1597 ost->video_pad = ((frame_padleft + frame_padright + frame_padtop + frame_padbottom) != 0);
1598 ost->video_resample = ((codec->width != icodec->width -
1599 (frame_leftBand + frame_rightBand) +
1600 (frame_padleft + frame_padright)) ||
1601 (codec->height != icodec->height -
1602 (frame_topBand + frame_bottomBand) +
1603 (frame_padtop + frame_padbottom)) ||
1604 (codec->pix_fmt != icodec->pix_fmt));
1605 if (ost->video_crop) {
1606 ost->topBand = frame_topBand;
1607 ost->leftBand = frame_leftBand;
1608 }
1609 if (ost->video_pad) {
1610 ost->padtop = frame_padtop;
1611 ost->padleft = frame_padleft;
1612 ost->padbottom = frame_padbottom;
1613 ost->padright = frame_padright;
1614 if (!ost->video_resample) {
1615 avcodec_get_frame_defaults(&ost->pict_tmp);
1616 if( avpicture_alloc( (AVPicture*)&ost->pict_tmp, codec->pix_fmt,
1617 codec->width, codec->height ) )
1618 goto fail;
1619 }
1620 }
1621 if (ost->video_resample) {
1622 avcodec_get_frame_defaults(&ost->pict_tmp);
1623 if( avpicture_alloc( (AVPicture*)&ost->pict_tmp, codec->pix_fmt,
1624 codec->width, codec->height ) )
1625 goto fail;
1626
1627 ost->img_resample_ctx = sws_getContext(
1628 icodec->width - (frame_leftBand + frame_rightBand),
1629 icodec->height - (frame_topBand + frame_bottomBand),
1630 icodec->pix_fmt,
1631 codec->width - (frame_padleft + frame_padright),
1632 codec->height - (frame_padtop + frame_padbottom),
1633 codec->pix_fmt,
1634 sws_flags, NULL, NULL, NULL);
1635 if (ost->img_resample_ctx == NULL) {
1636 fprintf(stderr, "Cannot get resampling context\n");
1637 exit(1);
1638 }
1639 ost->resample_height = icodec->height - (frame_topBand + frame_bottomBand);
1640 }
1641 ost->encoding_needed = 1;
1642 ist->decoding_needed = 1;
1643 break;
1644 case CODEC_TYPE_SUBTITLE:
1645 ost->encoding_needed = 1;
1646 ist->decoding_needed = 1;
1647 break;
1648 default:
1649 av_abort();
1650 break;
1651 }
1652 /* two pass mode */
1653 if (ost->encoding_needed &&
1654 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
1655 char logfilename[1024];
1656 FILE *f;
1657 int size;
1658 char *logbuffer;
1659
1660 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
1661 pass_logfilename ?
1662 pass_logfilename : DEFAULT_PASS_LOGFILENAME, i);
1663 if (codec->flags & CODEC_FLAG_PASS1) {
1664 f = fopen(logfilename, "w");
1665 if (!f) {
1666 perror(logfilename);
1667 exit(1);
1668 }
1669 ost->logfile = f;
1670 } else {
1671 /* read the log file */
1672 f = fopen(logfilename, "r");
1673 if (!f) {
1674 perror(logfilename);
1675 exit(1);
1676 }
1677 fseek(f, 0, SEEK_END);
1678 size = ftell(f);
1679 fseek(f, 0, SEEK_SET);
1680 logbuffer = av_malloc(size + 1);
1681 if (!logbuffer) {
1682 fprintf(stderr, "Could not allocate log buffer\n");
1683 exit(1);
1684 }
1685 size = fread(logbuffer, 1, size, f);
1686 fclose(f);
1687 logbuffer[size] = '\0';
1688 codec->stats_in = logbuffer;
1689 }
1690 }
1691 }
1692 if(codec->codec_type == CODEC_TYPE_VIDEO){
1693 int size= codec->width * codec->height;
1694 bit_buffer_size= FFMAX(bit_buffer_size, 4*size);
1695 }
1696 }
1697
1698 if (!bit_buffer)
1699 bit_buffer = av_malloc(bit_buffer_size);
1700 if (!bit_buffer)
1701 goto fail;
1702
1703 /* dump the file output parameters - cannot be done before in case
1704 of stream copy */
1705 for(i=0;i<nb_output_files;i++) {
1706 dump_format(output_files[i], i, output_files[i]->filename, 1);
1707 }
1708
1709 /* dump the stream mapping */
1710 if (verbose >= 0) {
1711 fprintf(stderr, "Stream mapping:\n");
1712 for(i=0;i<nb_ostreams;i++) {
1713 ost = ost_table[i];
1714 fprintf(stderr, " Stream #%d.%d -> #%d.%d",
1715 ist_table[ost->source_index]->file_index,
1716 ist_table[ost->source_index]->index,
1717 ost->file_index,
1718 ost->index);
1719 if (ost->sync_ist != ist_table[ost->source_index])
1720 fprintf(stderr, " [sync #%d.%d]",
1721 ost->sync_ist->file_index,
1722 ost->sync_ist->index);
1723 fprintf(stderr, "\n");
1724 }
1725 }
1726
1727 /* open each encoder */
1728 for(i=0;i<nb_ostreams;i++) {
1729 ost = ost_table[i];
1730 if (ost->encoding_needed) {
1731 AVCodec *codec;
1732 codec = avcodec_find_encoder(ost->st->codec->codec_id);
1733 if (!codec) {
1734 fprintf(stderr, "Unsupported codec for output stream #%d.%d\n",
1735 ost->file_index, ost->index);
1736 exit(1);
1737 }
1738 if (avcodec_open(ost->st->codec, codec) < 0) {
1739 fprintf(stderr, "Error while opening codec for output stream #%d.%d - maybe incorrect parameters such as bit_rate, rate, width or height\n",
1740 ost->file_index, ost->index);
1741 exit(1);
1742 }
1743 extra_size += ost->st->codec->extradata_size;
1744 }
1745 }
1746
1747 /* open each decoder */
1748 for(i=0;i<nb_istreams;i++) {
1749 ist = ist_table[i];
1750 if (ist->decoding_needed) {
1751 AVCodec *codec;
1752 codec = avcodec_find_decoder(ist->st->codec->codec_id);
1753 if (!codec) {
1754 fprintf(stderr, "Unsupported codec (id=%d) for input stream #%d.%d\n",
1755 ist->st->codec->codec_id, ist->file_index, ist->index);
1756 exit(1);
1757 }
1758 if (avcodec_open(ist->st->codec, codec) < 0) {
1759 fprintf(stderr, "Error while opening codec for input stream #%d.%d\n",
1760 ist->file_index, ist->index);
1761 exit(1);
1762 }
1763 //if (ist->st->codec->codec_type == CODEC_TYPE_VIDEO)
1764 // ist->st->codec->flags |= CODEC_FLAG_REPEAT_FIELD;
1765 }
1766 }
1767
1768 /* init pts */
1769 for(i=0;i<nb_istreams;i++) {
1770 ist = ist_table[i];
1771 is = input_files[ist->file_index];
1772 ist->pts = 0;
1773 ist->next_pts = av_rescale_q(ist->st->start_time, ist->st->time_base, AV_TIME_BASE_Q);
1774 if(ist->st->start_time == AV_NOPTS_VALUE)
1775 ist->next_pts=0;
1776 if(input_files_ts_offset[ist->file_index])
1777 ist->next_pts= AV_NOPTS_VALUE;
1778 ist->is_start = 1;
1779 }
1780
1781 /* compute buffer size max (should use a complete heuristic) */
1782 for(i=0;i<nb_input_files;i++) {
1783 file_table[i].buffer_size_max = 2048;
1784 }
1785
1786 /* set meta data information from input file if required */
1787 for (i=0;i<nb_meta_data_maps;i++) {
1788 AVFormatContext *out_file;
1789 AVFormatContext *in_file;
1790
1791 int out_file_index = meta_data_maps[i].out_file;
1792 int in_file_index = meta_data_maps[i].in_file;
1793 if ( out_file_index < 0 || out_file_index >= nb_output_files ) {
1794 fprintf(stderr, "Invalid output file index %d map_meta_data(%d,%d)\n", out_file_index, out_file_index, in_file_index);
1795 ret = -EINVAL;
1796 goto fail;
1797 }
1798 if ( in_file_index < 0 || in_file_index >= nb_input_files ) {
1799 fprintf(stderr, "Invalid input file index %d map_meta_data(%d,%d)\n", in_file_index, out_file_index, in_file_index);
1800 ret = -EINVAL;
1801 goto fail;
1802 }
1803
1804 out_file = output_files[out_file_index];
1805 in_file = input_files[in_file_index];
1806
1807 strcpy(out_file->title, in_file->title);
1808 strcpy(out_file->author, in_file->author);
1809 strcpy(out_file->copyright, in_file->copyright);
1810 strcpy(out_file->comment, in_file->comment);
1811 strcpy(out_file->album, in_file->album);
1812 out_file->year = in_file->year;
1813 out_file->track = in_file->track;
1814 strcpy(out_file->genre, in_file->genre);
1815 }
1816
1817 /* open files and write file headers */
1818 for(i=0;i<nb_output_files;i++) {
1819 os = output_files[i];
1820 if (av_write_header(os) < 0) {
1821 fprintf(stderr, "Could not write header for output file #%d (incorrect codec parameters ?)\n", i);
1822 ret = -EINVAL;
1823 goto fail;
1824 }
1825 }
1826
1827 if ( !using_stdin && verbose >= 0) {
1828 fprintf(stderr, "Press [q] to stop encoding\n");
1829 url_set_interrupt_cb(decode_interrupt_cb);
1830 }
1831 term_init();
1832
1833 stream_no_data = 0;
1834 key = -1;
1835
1836 for(; received_sigterm == 0;) {
1837 int file_index, ist_index;
1838 AVPacket pkt;
1839 double ipts_min;
1840 double opts_min;
1841
1842 redo:
1843 ipts_min= 1e100;
1844 opts_min= 1e100;
1845 /* if 'q' pressed, exits */
1846 if (!using_stdin) {
1847 if (q_pressed)
1848 break;
1849 /* read_key() returns 0 on EOF */
1850 key = read_key();
1851 if (key == 'q')
1852 break;
1853 }
1854
1855 /* select the stream that we must read now by looking at the
1856 smallest output pts */
1857 file_index = -1;
1858 for(i=0;i<nb_ostreams;i++) {
1859 double ipts, opts;
1860 ost = ost_table[i];
1861 os = output_files[ost->file_index];
1862 ist = ist_table[ost->source_index];
1863 if(ost->st->codec->codec_type == CODEC_TYPE_VIDEO)
1864 opts = ost->sync_opts * av_q2d(ost->st->codec->time_base);
1865 else
1866 opts = ost->st->pts.val * av_q2d(ost->st->time_base);
1867 ipts = (double)ist->pts;
1868 if (!file_table[ist->file_index].eof_reached){
1869 if(ipts < ipts_min) {
1870 ipts_min = ipts;
1871 if(input_sync ) file_index = ist->file_index;
1872 }
1873 if(opts < opts_min) {
1874 opts_min = opts;
1875 if(!input_sync) file_index = ist->file_index;
1876 }
1877 }
1878 if(ost->frame_number >= max_frames[ost->st->codec->codec_type]){
1879 file_index= -1;
1880 break;
1881 }
1882 }
1883 /* if none, if is finished */
1884 if (file_index < 0) {
1885 break;
1886 }
1887
1888 /* finish if recording time exhausted */
1889 if (recording_time > 0 && opts_min >= (recording_time / 1000000.0))
1890 break;
1891
1892 /* finish if limit size exhausted */
1893 if (limit_filesize != 0 && (limit_filesize * 1024) < url_ftell(&output_files[0]->pb))
1894 break;
1895
1896 /* read a frame from it and output it in the fifo */
1897 is = input_files[file_index];
1898 if (av_read_frame(is, &pkt) < 0) {
1899 file_table[file_index].eof_reached = 1;
1900 if (opt_shortest) break; else continue; //
1901 }
1902
1903 if (!pkt.size) {
1904 stream_no_data = is;
1905 } else {
1906 stream_no_data = 0;
1907 }
1908 if (do_pkt_dump) {
1909 av_pkt_dump(stdout, &pkt, do_hex_dump);
1910 }
1911 /* the following test is needed in case new streams appear
1912 dynamically in stream : we ignore them */
1913 if (pkt.stream_index >= file_table[file_index].nb_streams)
1914 goto discard_packet;
1915 ist_index = file_table[file_index].ist_index + pkt.stream_index;
1916 ist = ist_table[ist_index];
1917 if (ist->discard)
1918 goto discard_packet;
1919
1920 // fprintf(stderr, "next:%"PRId64" dts:%"PRId64" off:%"PRId64" %d\n", ist->next_pts, pkt.dts, input_files_ts_offset[ist->file_index], ist->st->codec->codec_type);
1921 if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE) {
1922 int64_t delta= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q) - ist->next_pts;
1923 if(FFABS(delta) > 1LL*dts_delta_threshold*AV_TIME_BASE && !copy_ts){
1924 input_files_ts_offset[ist->file_index]-= delta;
1925 if (verbose > 2)
1926 fprintf(stderr, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n", delta, input_files_ts_offset[ist->file_index]);
1927 for(i=0; i<file_table[file_index].nb_streams; i++){
1928 int index= file_table[file_index].ist_index + i;
1929 ist_table[index]->next_pts += delta;
1930 ist_table[index]->is_start=1;
1931 }
1932 }
1933 }
1934
1935 //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->index, pkt.size);
1936 if (output_packet(ist, ist_index, ost_table, nb_ostreams, &pkt) < 0) {
1937
1938 if (verbose >= 0)
1939 fprintf(stderr, "Error while decoding stream #%d.%d\n",
1940 ist->file_index, ist->index);
1941
1942 av_free_packet(&pkt);
1943 goto redo;
1944 }
1945
1946 discard_packet:
1947 av_free_packet(&pkt);
1948
1949 /* dump report by using the output first video and audio streams */
1950 print_report(output_files, ost_table, nb_ostreams, 0);
1951 }
1952
1953 /* at the end of stream, we must flush the decoder buffers */
1954 for(i=0;i<nb_istreams;i++) {
1955 ist = ist_table[i];
1956 if (ist->decoding_needed) {
1957 output_packet(ist, i, ost_table, nb_ostreams, NULL);
1958 }
1959 }
1960
1961 term_exit();
1962
1963 /* write the trailer if needed and close file */
1964 for(i=0;i<nb_output_files;i++) {
1965 os = output_files[i];
1966 av_write_trailer(os);
1967 }
1968
1969 /* dump report by using the first video and audio streams */
1970 print_report(output_files, ost_table, nb_ostreams, 1);
1971
1972 /* close each encoder */
1973 for(i=0;i<nb_ostreams;i++) {
1974 ost = ost_table[i];
1975 if (ost->encoding_needed) {
1976 av_freep(&ost->st->codec->stats_in);
1977 avcodec_close(ost->st->codec);
1978 }
1979 }
1980
1981 /* close each decoder */
1982 for(i=0;i<nb_istreams;i++) {
1983 ist = ist_table[i];
1984 if (ist->decoding_needed) {
1985 avcodec_close(ist->st->codec);
1986 }
1987 }
1988
1989 /* finished ! */
1990
1991 ret = 0;
1992 fail1:
1993 av_freep(&bit_buffer);
1994 av_free(file_table);
1995
1996 if (ist_table) {
1997 for(i=0;i<nb_istreams;i++) {
1998 ist = ist_table[i];
1999 av_free(ist);
2000 }
2001 av_free(ist_table);
2002 }
2003 if (ost_table) {
2004 for(i=0;i<nb_ostreams;i++) {
2005 ost = ost_table[i];
2006 if (ost) {
2007 if (ost->logfile) {
2008 fclose(ost->logfile);
2009 ost->logfile = NULL;
2010 }
2011 av_fifo_free(&ost->fifo); /* works even if fifo is not
2012 initialized but set to zero */
2013 av_free(ost->pict_tmp.data[0]);
2014 if (ost->video_resample)
2015 sws_freeContext(ost->img_resample_ctx);
2016 if (ost->audio_resample)
2017 audio_resample_close(ost->resample);
2018 av_free(ost);
2019 }
2020 }
2021 av_free(ost_table);
2022 }
2023 return ret;
2024 fail:
2025 ret = -ENOMEM;
2026 goto fail1;
2027 }
2028
2029 #if 0
2030 int file_read(const char *filename)
2031 {
2032 URLContext *h;
2033 unsigned char buffer[1024];
2034 int len, i;
2035
2036 if (url_open(&h, filename, O_RDONLY) < 0) {
2037 printf("could not open '%s'\n", filename);
2038 return -1;
2039 }
2040 for(;;) {
2041 len = url_read(h, buffer, sizeof(buffer));
2042 if (len <= 0)
2043 break;
2044 for(i=0;i<len;i++) putchar(buffer[i]);
2045 }
2046 url_close(h);
2047 return 0;
2048 }
2049 #endif
2050
2051 static void opt_format(const char *arg)
2052 {
2053 /* compatibility stuff for pgmyuv */
2054 if (!strcmp(arg, "pgmyuv")) {
2055 pgmyuv_compatibility_hack=1;
2056 // opt_image_format(arg);
2057 arg = "image2";
2058 }
2059
2060 file_iformat = av_find_input_format(arg);
2061 file_oformat = guess_format(arg, NULL, NULL);
2062 if (!file_iformat && !file_oformat) {
2063 fprintf(stderr, "Unknown input or output format: %s\n", arg);
2064 exit(1);
2065 }
2066 }
2067
2068 static void opt_video_rc_eq(char *arg)
2069 {
2070 video_rc_eq = arg;
2071 }
2072
2073 static void opt_video_rc_override_string(char *arg)
2074 {
2075 video_rc_override_string = arg;
2076 }
2077
2078 static void opt_me_threshold(const char *arg)
2079 {
2080 me_threshold = atoi(arg);
2081 }
2082
2083 static void opt_verbose(const char *arg)
2084 {
2085 verbose = atoi(arg);
2086 av_log_set_level(atoi(arg));
2087 }
2088
2089 static void opt_frame_rate(const char *arg)
2090 {
2091 if (parse_frame_rate(&frame_rate, &frame_rate_base, arg) < 0) {
2092 fprintf(stderr, "Incorrect frame rate\n");
2093 exit(1);
2094 }
2095 }
2096
2097 static void opt_frame_crop_top(const char *arg)
2098 {
2099 frame_topBand = atoi(arg);
2100 if (frame_topBand < 0) {
2101 fprintf(stderr, "Incorrect top crop size\n");
2102 exit(1);
2103 }
2104 if ((frame_topBand % 2) != 0) {
2105 fprintf(stderr, "Top crop size must be a multiple of 2\n");
2106 exit(1);
2107 }
2108 if ((frame_topBand) >= frame_height){
2109 fprintf(stderr, "Vertical crop dimensions are outside the range of the original image.\nRemember to crop first and scale second.\n");
2110 exit(1);
2111 }
2112 frame_height -= frame_topBand;
2113 }
2114
2115 static void opt_frame_crop_bottom(const char *arg)
2116 {
2117 frame_bottomBand = atoi(arg);
2118 if (frame_bottomBand < 0) {
2119 fprintf(stderr, "Incorrect bottom crop size\n");
2120 exit(1);
2121 }
2122 if ((frame_bottomBand % 2) != 0) {
2123 fprintf(stderr, "Bottom crop size must be a multiple of 2\n");
2124 exit(1);
2125 }
2126 if ((frame_bottomBand) >= frame_height){
2127 fprintf(stderr, "Vertical crop dimensions are outside the range of the original image.\nRemember to crop first and scale second.\n");
2128 exit(1);
2129 }
2130 frame_height -= frame_bottomBand;
2131 }
2132
2133 static void opt_frame_crop_left(const char *arg)
2134 {
2135 frame_leftBand = atoi(arg);
2136 if (frame_leftBand < 0) {
2137 fprintf(stderr, "Incorrect left crop size\n");
2138 exit(1);
2139 }
2140 if ((frame_leftBand % 2) != 0) {
2141 fprintf(stderr, "Left crop size must be a multiple of 2\n");
2142 exit(1);
2143 }
2144 if ((frame_leftBand) >= frame_width){
2145 fprintf(stderr, "Horizontal crop dimensions are outside the range of the original image.\nRemember to crop first and scale second.\n");
2146 exit(1);
2147 }
2148 frame_width -= frame_leftBand;
2149 }
2150
2151 static void opt_frame_crop_right(const char *arg)
2152 {
2153 frame_rightBand = atoi(arg);
2154 if (frame_rightBand < 0) {
2155 fprintf(stderr, "Incorrect right crop size\n");
2156 exit(1);
2157 }
2158 if ((frame_rightBand % 2) != 0) {
2159 fprintf(stderr, "Right crop size must be a multiple of 2\n");
2160 exit(1);
2161 }
2162 if ((frame_rightBand) >= frame_width){
2163 fprintf(stderr, "Horizontal crop dimensions are outside the range of the original image.\nRemember to crop first and scale second.\n");
2164 exit(1);
2165 }
2166 frame_width -= frame_rightBand;
2167 }
2168
2169 static void opt_frame_size(const char *arg)
2170 {
2171 if (parse_image_size(&frame_width, &frame_height, arg) < 0) {
2172 fprintf(stderr, "Incorrect frame size\n");
2173 exit(1);
2174 }
2175 if ((frame_width % 2) != 0 || (frame_height % 2) != 0) {
2176 fprintf(stderr, "Frame size must be a multiple of 2\n");
2177 exit(1);
2178 }
2179 }
2180
2181
2182 #define SCALEBITS 10
2183 #define ONE_HALF (1 << (SCALEBITS - 1))
2184 #define FIX(x) ((int) ((x) * (1<<SCALEBITS) + 0.5))
2185
2186 #define RGB_TO_Y(r, g, b) \
2187 ((FIX(0.29900) * (r) + FIX(0.58700) * (g) + \
2188 FIX(0.11400) * (b) + ONE_HALF) >> SCALEBITS)
2189
2190 #define RGB_TO_U(r1, g1, b1, shift)\
2191 (((- FIX(0.16874) * r1 - FIX(0.33126) * g1 + \
2192 FIX(0.50000) * b1 + (ONE_HALF << shift) - 1) >> (SCALEBITS + shift)) + 128)
2193
2194 #define RGB_TO_V(r1, g1, b1, shift)\
2195 (((FIX(0.50000) * r1 - FIX(0.41869) * g1 - \
2196 FIX(0.08131) * b1 + (ONE_HALF << shift) - 1) >> (SCALEBITS + shift)) + 128)
2197
2198 static void opt_pad_color(const char *arg) {
2199 /* Input is expected to be six hex digits similar to
2200 how colors are expressed in html tags (but without the #) */
2201 int rgb = strtol(arg, NULL, 16);
2202 int r,g,b;
2203
2204 r = (rgb >> 16);
2205 g = ((rgb >> 8) & 255);
2206 b = (rgb & 255);
2207
2208 padcolor[0] = RGB_TO_Y(r,g,b);
2209 padcolor[1] = RGB_TO_U(r,g,b,0);
2210 padcolor[2] = RGB_TO_V(r,g,b,0);
2211 }
2212
2213 static void opt_frame_pad_top(const char *arg)
2214 {
2215 frame_padtop = atoi(arg);
2216 if (frame_padtop < 0) {
2217 fprintf(stderr, "Incorrect top pad size\n");
2218 exit(1);
2219 }
2220 if ((frame_padtop % 2) != 0) {
2221 fprintf(stderr, "Top pad size must be a multiple of 2\n");
2222 exit(1);
2223 }
2224 }
2225
2226 static void opt_frame_pad_bottom(const char *arg)
2227 {
2228 frame_padbottom = atoi(arg);
2229 if (frame_padbottom < 0) {
2230 fprintf(stderr, "Incorrect bottom pad size\n");
2231 exit(1);
2232 }
2233 if ((frame_padbottom % 2) != 0) {
2234 fprintf(stderr, "Bottom pad size must be a multiple of 2\n");
2235 exit(1);
2236 }
2237 }
2238
2239
2240 static void opt_frame_pad_left(const char *arg)
2241 {
2242 frame_padleft = atoi(arg);
2243 if (frame_padleft < 0) {
2244 fprintf(stderr, "Incorrect left pad size\n");
2245 exit(1);
2246 }
2247 if ((frame_padleft % 2) != 0) {
2248 fprintf(stderr, "Left pad size must be a multiple of 2\n");
2249 exit(1);
2250 }
2251 }
2252
2253
2254 static void opt_frame_pad_right(const char *arg)
2255 {
2256 frame_padright = atoi(arg);
2257 if (frame_padright < 0) {
2258 fprintf(stderr, "Incorrect right pad size\n");
2259 exit(1);
2260 }
2261 if ((frame_padright % 2) != 0) {
2262 fprintf(stderr, "Right pad size must be a multiple of 2\n");
2263 exit(1);
2264 }
2265 }
2266
2267
2268 static void opt_frame_pix_fmt(const char *arg)
2269 {
2270 frame_pix_fmt = avcodec_get_pix_fmt(arg);
2271 }
2272
2273 static void opt_frame_aspect_ratio(const char *arg)
2274 {
2275 int x = 0, y = 0;
2276 double ar = 0;
2277 const char *p;
2278
2279 p = strchr(arg, ':');
2280 if (p) {
2281 x = strtol(arg, (char **)&arg, 10);
2282 if (arg == p)
2283 y = strtol(arg+1, (char **)&arg, 10);
2284 if (x > 0 && y > 0)
2285 ar = (double)x / (double)y;
2286 } else
2287 ar = strtod(arg, (char **)&arg);
2288
2289 if (!ar) {
2290 fprintf(stderr, "Incorrect aspect ratio specification.\n");
2291 exit(1);
2292 }
2293 frame_aspect_ratio = ar;
2294 }
2295
2296 static void opt_qscale(const char *arg)
2297 {
2298 video_qscale = atof(arg);
2299 if (video_qscale <= 0 ||
2300 video_qscale > 255) {
2301 fprintf(stderr, "qscale must be > 0.0 and <= 255\n");
2302 exit(1);
2303 }
2304 }
2305
2306 static void opt_qdiff(const char *arg)
2307 {
2308 video_qdiff = atoi(arg);
2309 if (video_qdiff < 0 ||
2310 video_qdiff > 31) {
2311 fprintf(stderr, "qdiff must be >= 1 and <= 31\n");
2312 exit(1);
2313 }
2314 }
2315
2316 static void opt_packet_size(const char *arg)
2317 {
2318 packet_size= atoi(arg);
2319 }
2320
2321 static void opt_strict(const char *arg)
2322 {
2323 strict= atoi(arg);
2324 }
2325
2326 static void opt_top_field_first(const char *arg)
2327 {
2328 top_field_first= atoi(arg);
2329 }
2330
2331 static void opt_thread_count(const char *arg)
2332 {
2333 thread_count= atoi(arg);
2334 #if !defined(HAVE_THREADS)
2335 if (verbose >= 0)
2336 fprintf(stderr, "Warning: not compiled with thread support, using thread emulation\n");
2337 #endif
2338 }
2339
2340 static void opt_audio_bitrate(const char *arg)
2341 {
2342 audio_bit_rate = atoi(arg) * 1000;
2343 }
2344
2345 static void opt_audio_rate(const char *arg)
2346 {
2347 audio_sample_rate = atoi(arg);
2348 }
2349
2350 static void opt_audio_channels(const char *arg)
2351 {
2352 audio_channels = atoi(arg);
2353 }
2354
2355 static void opt_video_device(const char *arg)
2356 {
2357 video_device = av_strdup(arg);
2358 }
2359
2360 static void opt_grab_device(const char *arg)
2361 {
2362 grab_device = av_strdup(arg);
2363 }
2364
2365 static void opt_video_channel(const char *arg)
2366 {
2367 video_channel = strtol(arg, NULL, 0);
2368 }
2369
2370 static void opt_video_standard(const char *arg)
2371 {
2372 video_standard = av_strdup(arg);
2373 }
2374
2375 static void opt_audio_device(const char *arg)
2376 {
2377 audio_device = av_strdup(arg);
2378 }
2379
2380 static void opt_codec(int *pstream_copy, int *pcodec_id,
2381 int codec_type, const char *arg)
2382 {
2383 AVCodec *p;
2384
2385 if (!strcmp(arg, "copy")) {
2386 *pstream_copy = 1;
2387 } else {
2388 p = first_avcodec;
2389 while (p) {
2390 if (!strcmp(p->name, arg) && p->type == codec_type)
2391 break;
2392 p = p->next;
2393 }
2394 if (p == NULL) {
2395 fprintf(stderr, "Unknown codec '%s'\n", arg);
2396 exit(1);
2397 } else {
2398 *pcodec_id = p->id;
2399 }
2400 }
2401 }
2402
2403 static void opt_audio_codec(const char *arg)
2404 {
2405 opt_codec(&audio_stream_copy, &audio_codec_id, CODEC_TYPE_AUDIO, arg);
2406 }
2407
2408 static void opt_audio_tag(const char *arg)
2409 {
2410 char *tail;
2411 audio_codec_tag= strtol(arg, &tail, 0);
2412
2413 if(!tail || *tail)
2414 audio_codec_tag= arg[0] + (arg[1]<<8) + (arg[2]<<16) + (arg[3]<<24);
2415 }
2416
2417 static void opt_video_tag(const char *arg)
2418 {
2419 char *tail;
2420 video_codec_tag= strtol(arg, &tail, 0);
2421
2422 if(!tail || *tail)
2423 video_codec_tag= arg[0] + (arg[1]<<8) + (arg[2]<<16) + (arg[3]<<24);
2424 }
2425
2426 static void add_frame_hooker(const char *arg)
2427 {
2428 int argc = 0;
2429 char *argv[64];
2430 int i;
2431 char *args = av_strdup(arg);
2432
2433 using_vhook = 1;
2434
2435 argv[0] = strtok(args, " ");
2436 while (argc < 62 && (argv[++argc] = strtok(NULL, " "))) {
2437 }
2438
2439 i = frame_hook_add(argc, argv);
2440
2441 if (i != 0) {
2442 fprintf(stderr, "Failed to add video hook function: %s\n", arg);
2443 exit(1);
2444 }
2445 }
2446
2447 const char *motion_str[] = {
2448 "zero",
2449 "full",
2450 "log",
2451 "phods",
2452 "epzs",
2453 "x1",
2454 "hex",
2455 "umh",
2456 "iter",
2457 NULL,
2458 };
2459
2460 static void opt_motion_estimation(const char *arg)
2461 {
2462 const char **p;
2463 p = motion_str;
2464 for(;;) {
2465 if (!*p) {
2466 fprintf(stderr, "Unknown motion estimation method '%s'\n", arg);
2467 exit(1);
2468 }
2469 if (!strcmp(*p, arg))
2470 break;
2471 p++;
2472 }
2473 me_method = (p - motion_str) + 1;
2474 }
2475
2476 static void opt_video_codec(const char *arg)
2477 {
2478 opt_codec(&video_stream_copy, &video_codec_id, CODEC_TYPE_VIDEO, arg);
2479 }
2480
2481 static void opt_subtitle_codec(const char *arg)
2482 {
2483 opt_codec(&subtitle_stream_copy, &subtitle_codec_id, CODEC_TYPE_SUBTITLE, arg);
2484 }
2485
2486 static void opt_map(const char *arg)
2487 {
2488 AVStreamMap *m;
2489 const char *p;
2490
2491 p = arg;
2492 m = &stream_maps[nb_stream_maps++];
2493
2494 m->file_index = strtol(arg, (char **)&p, 0);
2495 if (*p)
2496 p++;
2497
2498 m->stream_index = strtol(p, (char **)&p, 0);
2499 if (*p) {
2500 p++;
2501 m->sync_file_index = strtol(p, (char **)&p, 0);
2502 if (*p)
2503 p++;
2504 m->sync_stream_index = strtol(p, (char **)&p, 0);
2505 } else {
2506 m->sync_file_index = m->file_index;
2507 m->sync_stream_index = m->stream_index;
2508 }
2509 }
2510
2511 static void opt_map_meta_data(const char *arg)
2512 {
2513 AVMetaDataMap *m;
2514 const char *p;
2515
2516 p = arg;
2517 m = &meta_data_maps[nb_meta_data_maps++];
2518
2519 m->out_file = strtol(arg, (char **)&p, 0);
2520 if (*p)
2521 p++;
2522
2523 m->in_file = strtol(p, (char **)&p, 0);
2524 }
2525
2526 static void opt_recording_time(const char *arg)
2527 {
2528 recording_time = parse_date(arg, 1);
2529 }
2530
2531 static void opt_start_time(const char *arg)
2532 {
2533 start_time = parse_date(arg, 1);
2534 }
2535
2536 static void opt_rec_timestamp(const char *arg)
2537 {
2538 rec_timestamp = parse_date(arg, 0) / 1000000;
2539 }
2540
2541 static void opt_input_ts_offset(const char *arg)
2542 {
2543 input_ts_offset = parse_date(arg, 1);
2544 }
2545
2546 static void opt_input_file(const char *filename)
2547 {
2548 AVFormatContext *ic;
2549 AVFormatParameters params, *ap = &params;
2550 int err, i, ret, rfps, rfps_base;
2551 int64_t timestamp;
2552
2553 if (!strcmp(filename, "-"))
2554 filename = "pipe:";
2555
2556 using_stdin |= !strncmp(filename, "pipe:", 5) ||
2557 !strcmp( filename, "/dev/stdin" );
2558
2559 /* get default parameters from command line */
2560 ic = av_alloc_format_context();
2561
2562 memset(ap, 0, sizeof(*ap));
2563 ap->prealloced_context = 1;
2564 ap->sample_rate = audio_sample_rate;
2565 ap->channels = audio_channels;
2566 ap->time_base.den = frame_rate;
2567 ap->time_base.num = frame_rate_base;
2568 ap->width = frame_width + frame_padleft + frame_padright;
2569 ap->height = frame_height + frame_padtop + frame_padbottom;
2570 ap->pix_fmt = frame_pix_fmt;
2571 ap->device = grab_device;
2572 ap->channel = video_channel;
2573 ap->standard = video_standard;
2574 ap->video_codec_id = video_codec_id;
2575 ap->audio_codec_id = audio_codec_id;
2576 if(pgmyuv_compatibility_hack)
2577 ap->video_codec_id= CODEC_ID_PGMYUV;
2578
2579 for(i=0; i<opt_name_count; i++){
2580 AVOption *opt;
2581 double d= av_get_double(avformat_opts, opt_names[i], &opt);
2582 if(d==d && (opt->flags&AV_OPT_FLAG_DECODING_PARAM))
2583 av_set_double(ic, opt_names[i], d);
2584 }
2585 /* open the input file with generic libav function */
2586 err = av_open_input_file(&ic, filename, file_iformat, 0, ap);
2587 if (err < 0) {
2588 print_error(filename, err);
2589 exit(1);
2590 }
2591
2592 ic->loop_input = loop_input;
2593
2594 /* If not enough info to get the stream parameters, we decode the
2595 first frames to get it. (used in mpeg case for example) */
2596 ret = av_find_stream_info(ic);
2597 if (ret < 0 && verbose >= 0) {
2598 fprintf(stderr, "%s: could not find codec parameters\n", filename);
2599 exit(1);
2600 }
2601
2602 timestamp = start_time;
2603 /* add the stream start time */
2604 if (ic->start_time != AV_NOPTS_VALUE)
2605 timestamp += ic->start_time;
2606
2607 /* if seeking requested, we execute it */
2608 if (start_time != 0) {
2609 ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
2610 if (ret < 0) {
2611 fprintf(stderr, "%s: could not seek to position %0.3f\n",
2612 filename, (double)timestamp / AV_TIME_BASE);
2613 }
2614 /* reset seek info */
2615 start_time = 0;
2616 }
2617
2618 /* update the current parameters so that they match the one of the input stream */
2619 for(i=0;i<ic->nb_streams;i++) {
2620 int j;
2621 AVCodecContext *enc = ic->streams[i]->codec;
2622 #if defined(HAVE_THREADS)
2623 if(thread_count>1)
2624 avcodec_thread_init(enc, thread_count);
2625 #endif
2626 enc->thread_count= thread_count;
2627 switch(enc->codec_type) {
2628 case CODEC_TYPE_AUDIO:
2629 for(j=0; j<opt_name_count; j++){
2630 AVOption *opt;
2631 double d= av_get_double(avctx_opts, opt_names[j], &opt);
2632 if(d==d && (opt->flags&AV_OPT_FLAG_AUDIO_PARAM) && (opt->flags&AV_OPT_FLAG_DECODING_PARAM))
2633 av_set_double(enc, opt_names[j], d);
2634 }
2635 //fprintf(stderr, "\nInput Audio channels: %d", enc->channels);
2636 audio_channels = enc->channels;
2637 audio_sample_rate = enc->sample_rate;
2638 if(audio_disable)
2639 ic->streams[i]->discard= AVDISCARD_ALL;
2640 break;
2641 case CODEC_TYPE_VIDEO:
2642 for(j=0; j<opt_name_count; j++){
2643 AVOption *opt;
2644 double d= av_get_double(avctx_opts, opt_names[j], &opt);
2645 if(d==d && (opt->flags&AV_OPT_FLAG_VIDEO_PARAM) && (opt->flags&AV_OPT_FLAG_DECODING_PARAM))
2646 av_set_double(enc, opt_names[j], d);
2647 }
2648 frame_height = enc->height;
2649 frame_width = enc->width;
2650 frame_aspect_ratio = av_q2d(enc->sample_aspect_ratio) * enc->width / enc->height;
2651 frame_pix_fmt = enc->pix_fmt;
2652 rfps = ic->streams[i]->r_frame_rate.num;
2653 rfps_base = ic->streams[i]->r_frame_rate.den;
2654 if(enc->lowres) enc->flags |= CODEC_FLAG_EMU_EDGE;
2655 if(me_threshold)
2656 enc->debug |= FF_DEBUG_MV;
2657
2658 if (enc->time_base.den != rfps || enc->time_base.num != rfps_base) {
2659
2660 if (verbose >= 0)
2661 fprintf(stderr,"\nSeems that stream %d comes from film source: %2.2f (%d/%d) -> %2.2f (%d/%d)\n",
2662 i, (float)enc->time_base.den / enc->time_base.num, enc->time_base.den, enc->time_base.num,
2663
2664 (float)rfps / rfps_base, rfps, rfps_base);
2665 }
2666 /* update the current frame rate to match the stream frame rate */
2667 frame_rate = rfps;
2668 frame_rate_base = rfps_base;
2669
2670 enc->rate_emu = rate_emu;
2671 if(video_disable)
2672 ic->streams[i]->discard= AVDISCARD_ALL;
2673 else if(video_discard)
2674 ic->streams[i]->discard= video_discard;
2675 break;
2676 case CODEC_TYPE_DATA:
2677 break;
2678 case CODEC_TYPE_SUBTITLE:
2679 break;
2680 case CODEC_TYPE_UNKNOWN:
2681 break;
2682 default:
2683 av_abort();
2684 }
2685 }
2686
2687 input_files[nb_input_files] = ic;
2688 input_files_ts_offset[nb_input_files] = input_ts_offset - (copy_ts ? 0 : timestamp);
2689 /* dump the file content */
2690 if (verbose >= 0)
2691 dump_format(ic, nb_input_files, filename, 0);
2692
2693 nb_input_files++;
2694 file_iformat = NULL;
2695 file_oformat = NULL;
2696
2697 grab_device = NULL;
2698 video_channel = 0;
2699
2700 rate_emu = 0;
2701 }
2702
2703 static void opt_grab(const char *arg)
2704 {
2705 file_iformat = av_find_input_format(arg);
2706 opt_input_file("");
2707 }
2708
2709 static void check_audio_video_inputs(int *has_video_ptr, int *has_audio_ptr)
2710 {
2711 int has_video, has_audio, i, j;
2712 AVFormatContext *ic;
2713
2714 has_video = 0;
2715 has_audio = 0;
2716 for(j=0;j<nb_input_files;j++) {
2717 ic = input_files[j];
2718 for(i=0;i<ic->nb_streams;i++) {
2719 AVCodecContext *enc = ic->streams[i]->codec;
2720 switch(enc->codec_type) {
2721 case CODEC_TYPE_AUDIO:
2722 has_audio = 1;
2723 break;
2724 case CODEC_TYPE_VIDEO:
2725 has_video = 1;
2726 break;
2727 case CODEC_TYPE_DATA:
2728 case CODEC_TYPE_UNKNOWN:
2729 case CODEC_TYPE_SUBTITLE:
2730 break;
2731 default:
2732 av_abort();
2733 }
2734 }
2735 }
2736 *has_video_ptr = has_video;
2737 *has_audio_ptr = has_audio;
2738 }
2739
2740 static void new_video_stream(AVFormatContext *oc)
2741 {
2742 AVStream *st;
2743 AVCodecContext *video_enc;
2744 int codec_id;
2745
2746 st = av_new_stream(oc, oc->nb_streams);
2747 if (!st) {
2748 fprintf(stderr, "Could not alloc stream\n");
2749 exit(1);
2750 }
2751 bitstream_filters[nb_output_files][oc->nb_streams - 1]= video_bitstream_filters;
2752 video_bitstream_filters= NULL;
2753
2754 #if defined(HAVE_THREADS)
2755 if(thread_count>1)
2756 avcodec_thread_init(st->codec, thread_count);
2757 #endif
2758
2759 video_enc = st->codec;
2760
2761 if(video_codec_tag)
2762 video_enc->codec_tag= video_codec_tag;
2763
2764 if( (video_global_header&1)
2765 || (video_global_header==0 && (oc->oformat->flags & AVFMT_GLOBALHEADER))){
2766 video_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
2767 avctx_opts->flags|= CODEC_FLAG_GLOBAL_HEADER;
2768 }
2769 if(video_global_header&2){
2770 video_enc->flags2 |= CODEC_FLAG2_LOCAL_HEADER;
2771 avctx_opts->flags2|= CODEC_FLAG2_LOCAL_HEADER;
2772 }
2773
2774 if (video_stream_copy) {
2775 st->stream_copy = 1;
2776 video_enc->codec_type = CODEC_TYPE_VIDEO;
2777 } else {
2778 char *p;
2779 int i;
2780 AVCodec *codec;
2781
2782 codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, CODEC_TYPE_VIDEO);
2783 if (video_codec_id != CODEC_ID_NONE)
2784 codec_id = video_codec_id;
2785
2786 video_enc->codec_id = codec_id;
2787 codec = avcodec_find_encoder(codec_id);
2788
2789 for(i=0; i<opt_name_count; i++){
2790 AVOption *opt;
2791 double d= av_get_double(avctx_opts, opt_names[i], &opt);
2792 if(d==d && (opt->flags&AV_OPT_FLAG_VIDEO_PARAM) && (opt->flags&AV_OPT_FLAG_ENCODING_PARAM))
2793 av_set_double(video_enc, opt_names[i], d);
2794 }
2795
2796 video_enc->time_base.den = frame_rate;
2797 video_enc->time_base.num = frame_rate_base;
2798 if(codec && codec->supported_framerates){
2799 const AVRational *p= codec->supported_framerates;
2800 AVRational req= (AVRational){frame_rate, frame_rate_base};
2801 const AVRational *best=NULL;
2802 AVRational best_error= (AVRational){INT_MAX, 1};
2803 for(; p->den!=0; p++){
2804 AVRational error= av_sub_q(req, *p);
2805 if(error.num <0) error.num *= -1;
2806 if(av_cmp_q(error, best_error) < 0){
2807 best_error= error;
2808 best= p;
2809 }
2810 }
2811 video_enc->time_base.den= best->num;
2812 video_enc->time_base.num= best->den;
2813 }
2814
2815 video_enc->width = frame_width + frame_padright + frame_padleft;
2816 video_enc->height = frame_height + frame_padtop + frame_padbottom;
2817 video_enc->sample_aspect_ratio = av_d2q(frame_aspect_ratio*video_enc->height/video_enc->width, 255);
2818 video_enc->pix_fmt = frame_pix_fmt;
2819
2820 if(codec && codec->pix_fmts){
2821 const enum PixelFormat *p= codec->pix_fmts;
2822 for(; *p!=-1; p++){
2823 if(*p == video_enc->pix_fmt)
2824 break;
2825 }
2826 if(*p == -1)
2827 video_enc->pix_fmt = codec->pix_fmts[0];
2828 }
2829
2830 if (intra_only)
2831 video_enc->gop_size = 0;
2832 if (video_qscale || same_quality) {
2833 video_enc->flags |= CODEC_FLAG_QSCALE;
2834 video_enc->global_quality=
2835 st->quality = FF_QP2LAMBDA * video_qscale;
2836 }
2837
2838 if(intra_matrix)
2839 video_enc->intra_matrix = intra_matrix;
2840 if(inter_matrix)
2841 video_enc->inter_matrix = inter_matrix;
2842
2843 video_enc->max_qdiff = video_qdiff;
2844 video_enc->rc_eq = video_rc_eq;
2845 video_enc->thread_count = thread_count;
2846 p= video_rc_override_string;
2847 for(i=0; p; i++){
2848 int start, end, q;
2849 int e=sscanf(p, "%d,%d,%d", &start, &end, &q);
2850 if(e!=3){
2851 fprintf(stderr, "error parsing rc_override\n");
2852 exit(1);
2853 }
2854 video_enc->rc_override=
2855 av_realloc(video_enc->rc_override,
2856 sizeof(RcOverride)*(i+1));
2857 video_enc->rc_override[i].start_frame= start;
2858 video_enc->rc_override[i].end_frame = end;
2859 if(q>0){
2860 video_enc->rc_override[i].qscale= q;
2861 video_enc->rc_override[i].quality_factor= 1.0;
2862 }
2863 else{
2864 video_enc->rc_override[i].qscale= 0;
2865 video_enc->rc_override[i].quality_factor= -q/100.0;
2866 }
2867 p= strchr(p, '/');
2868 if(p) p++;
2869 }
2870 video_enc->rc_override_count=i;
2871 video_enc->rc_initial_buffer_occupancy = video_enc->rc_buffer_size*3/4;
2872 video_enc->me_threshold= me_threshold;
2873 video_enc->intra_dc_precision= intra_dc_precision - 8;
2874 video_enc->strict_std_compliance = strict;
2875
2876 if(packet_size){
2877 video_enc->rtp_mode= 1;
2878 video_enc->rtp_payload_size= packet_size;
2879 }
2880
2881 if (do_psnr)
2882 video_enc->flags|= CODEC_FLAG_PSNR;
2883
2884 video_enc->me_method = me_method;
2885
2886 /* two pass mode */
2887 if (do_pass) {
2888 if (do_pass == 1) {
2889 video_enc->flags |= CODEC_FLAG_PASS1;
2890 } else {
2891 video_enc->flags |= CODEC_FLAG_PASS2;
2892 }
2893 }
2894 }
2895
2896 /* reset some key parameters */
2897 video_disable = 0;
2898 video_codec_id = CODEC_ID_NONE;
2899 video_stream_copy = 0;
2900 }
2901
2902 static void new_audio_stream(AVFormatContext *oc)
2903 {
2904 AVStream *st;
2905 AVCodecContext *audio_enc;
2906 int codec_id, i;
2907
2908 st = av_new_stream(oc, oc->nb_streams);
2909 if (!st) {
2910 fprintf(stderr, "Could not alloc stream\n");
2911 exit(1);
2912 }
2913
2914 bitstream_filters[nb_output_files][oc->nb_streams - 1]= audio_bitstream_filters;
2915 audio_bitstream_filters= NULL;
2916
2917 #if defined(HAVE_THREADS)
2918 if(thread_count>1)
2919 avcodec_thread_init(st->codec, thread_count);
2920 #endif
2921
2922 audio_enc = st->codec;
2923 audio_enc->codec_type = CODEC_TYPE_AUDIO;
2924 audio_enc->strict_std_compliance = strict;
2925
2926 if(audio_codec_tag)
2927 audio_enc->codec_tag= audio_codec_tag;
2928
2929 if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
2930 audio_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
2931 avctx_opts->flags|= CODEC_FLAG_GLOBAL_HEADER;
2932 }
2933 if (audio_stream_copy) {
2934 st->stream_copy = 1;
2935 audio_enc->channels = audio_channels;
2936 } else {
2937 codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, CODEC_TYPE_AUDIO);
2938
2939 for(i=0; i<opt_name_count; i++){
2940 AVOption *opt;
2941 double d= av_get_double(avctx_opts, opt_names[i], &opt);
2942 if(d==d && (opt->flags&AV_OPT_FLAG_AUDIO_PARAM) && (opt->flags&AV_OPT_FLAG_ENCODING_PARAM))
2943 av_set_double(audio_enc, opt_names[i], d);
2944 }
2945
2946 if (audio_codec_id != CODEC_ID_NONE)
2947 codec_id = audio_codec_id;
2948 audio_enc->codec_id = codec_id;
2949
2950 audio_enc->bit_rate = audio_bit_rate;
2951 if (audio_qscale > QSCALE_NONE) {
2952 audio_enc->flags |= CODEC_FLAG_QSCALE;
2953 audio_enc->global_quality = st->quality = FF_QP2LAMBDA * audio_qscale;
2954 }
2955 audio_enc->thread_count = thread_count;
2956 /* For audio codecs other than AC3 or DTS we limit */
2957 /* the number of coded channels to stereo */
2958 if (audio_channels > 2 && codec_id != CODEC_ID_AC3
2959 && codec_id != CODEC_ID_DTS) {
2960 audio_enc->channels = 2;
2961 } else
2962 audio_enc->channels = audio_channels;
2963 }
2964 audio_enc->sample_rate = audio_sample_rate;
2965 audio_enc->time_base= (AVRational){1, audio_sample_rate};
2966 if (audio_language) {
2967 pstrcpy(st->language, sizeof(st->language), audio_language);
2968 av_free(audio_language);
2969 audio_language = NULL;
2970 }
2971
2972 /* reset some key parameters */
2973 audio_disable = 0;
2974 audio_codec_id = CODEC_ID_NONE;
2975 audio_stream_copy = 0;
2976 }
2977
2978 static void opt_new_subtitle_stream(void)
2979 {
2980 AVFormatContext *oc;
2981 AVStream *st;
2982 AVCodecContext *subtitle_enc;
2983 int i;
2984
2985 if (nb_output_files <= 0) {
2986 fprintf(stderr, "At least one output file must be specified\n");
2987 exit(1);
2988 }
2989 oc = output_files[nb_output_files - 1];
2990
2991 st = av_new_stream(oc, oc->nb_streams);
2992 if (!st) {
2993 fprintf(stderr, "Could not alloc stream\n");
2994 exit(1);
2995 }
2996
2997 subtitle_enc = st->codec;
2998 subtitle_enc->codec_type = CODEC_TYPE_SUBTITLE;
2999 if (subtitle_stream_copy) {
3000 st->stream_copy = 1;
3001 } else {
3002 for(i=0; i<opt_name_count; i++){
3003 AVOption *opt;
3004 double d= av_get_double(avctx_opts, opt_names[i], &opt);
3005 if(d==d && (opt->flags&AV_OPT_FLAG_SUBTITLE_PARAM) && (opt->flags&AV_OPT_FLAG_ENCODING_PARAM))
3006 av_set_double(subtitle_enc, opt_names[i], d);
3007 }
3008 subtitle_enc->codec_id = subtitle_codec_id;
3009 }
3010
3011 if (subtitle_language) {
3012 pstrcpy(st->language, sizeof(st->language), subtitle_language);
3013 av_free(subtitle_language);
3014 subtitle_language = NULL;
3015 }
3016
3017 subtitle_codec_id = CODEC_ID_NONE;
3018 subtitle_stream_copy = 0;
3019 }
3020
3021 static void opt_new_audio_stream(void)
3022 {
3023 AVFormatContext *oc;
3024 if (nb_output_files <= 0) {
3025 fprintf(stderr, "At least one output file must be specified\n");
3026 exit(1);
3027 }
3028 oc = output_files[nb_output_files - 1];
3029 new_audio_stream(oc);
3030 }
3031
3032 static void opt_new_video_stream(void)
3033 {
3034 AVFormatContext *oc;
3035 if (nb_output_files <= 0) {
3036 fprintf(stderr, "At least one output file must be specified\n");
3037 exit(1);
3038 }
3039 oc = output_files[nb_output_files - 1];
3040 new_video_stream(oc);
3041 }
3042
3043 static void opt_output_file(const char *filename)
3044 {
3045 AVFormatContext *oc;
3046 int use_video, use_audio, input_has_video, input_has_audio, i;
3047 AVFormatParameters params, *ap = &params;
3048
3049 if (!strcmp(filename, "-"))
3050 filename = "pipe:";
3051
3052 oc = av_alloc_format_context();
3053
3054 if (!file_oformat) {
3055 file_oformat = guess_format(NULL, filename, NULL);
3056 if (!file_oformat) {
3057 fprintf(stderr, "Unable for find a suitable output format for '%s'\n",
3058 filename);
3059 exit(1);
3060 }
3061 }
3062
3063 oc->oformat = file_oformat;
3064 pstrcpy(oc->filename, sizeof(oc->filename), filename);
3065
3066 if (!strcmp(file_oformat->name, "ffm") &&
3067 strstart(filename, "http:", NULL)) {
3068 /* special case for files sent to ffserver: we get the stream
3069 parameters from ffserver */
3070 if (read_ffserver_streams(oc, filename) < 0) {
3071 fprintf(stderr, "Could not read stream parameters from '%s'\n", filename);
3072 exit(1);
3073 }
3074 } else {
3075 use_video = file_oformat->video_codec != CODEC_ID_NONE || video_stream_copy || video_codec_id != CODEC_ID_NONE;
3076 use_audio = file_oformat->audio_codec != CODEC_ID_NONE || audio_stream_copy || audio_codec_id != CODEC_ID_NONE;
3077
3078 /* disable if no corresponding type found and at least one
3079 input file */
3080 if (nb_input_files > 0) {
3081 check_audio_video_inputs(&input_has_video, &input_has_audio);
3082 if (!input_has_video)
3083 use_video = 0;
3084 if (!input_has_audio)
3085 use_audio = 0;
3086 }
3087
3088 /* manual disable */
3089 if (audio_disable) {
3090 use_audio = 0;
3091 }
3092 if (video_disable) {
3093 use_video = 0;
3094 }
3095
3096 if (use_video) {
3097 new_video_stream(oc);
3098 }
3099
3100 if (use_audio) {
3101 new_audio_stream(oc);
3102 }
3103
3104 oc->timestamp = rec_timestamp;
3105
3106 if (str_title)
3107 pstrcpy(oc->title, sizeof(oc->title), str_title);
3108 if (str_author)
3109 pstrcpy(oc->author, sizeof(oc->author), str_author);
3110 if (str_copyright)
3111 pstrcpy(oc->copyright, sizeof(oc->copyright), str_copyright);
3112 if (str_comment)
3113 pstrcpy(oc->comment, sizeof(oc->comment), str_comment);
3114 if (str_album)
3115 pstrcpy(oc->album, sizeof(oc->album), str_album);
3116 }
3117
3118 output_files[nb_output_files++] = oc;
3119
3120 /* check filename in case of an image number is expected */
3121 if (oc->oformat->flags & AVFMT_NEEDNUMBER) {
3122 if (!av_filename_number_test(oc->filename)) {
3123 print_error(oc->filename, AVERROR_NUMEXPECTED);
3124 exit(1);
3125 }
3126 }
3127
3128 if (!(oc->oformat->flags & AVFMT_NOFILE)) {
3129 /* test if it already exists to avoid loosing precious files */
3130 if (!file_overwrite &&
3131 (strchr(filename, ':') == NULL ||
3132 strstart(filename, "file:", NULL))) {
3133 if (url_exist(filename)) {
3134 int c;
3135
3136 if ( !using_stdin ) {
3137 fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
3138 fflush(stderr);
3139 c = getchar();
3140 if (toupper(c) != 'Y') {
3141 fprintf(stderr, "Not overwriting - exiting\n");
3142 exit(1);
3143 }
3144 }
3145 else {
3146 fprintf(stderr,"File '%s' already exists. Exiting.\n", filename);
3147 exit(1);
3148 }
3149 }
3150 }
3151
3152 /* open the file */
3153 if (url_fopen(&oc->pb, filename, URL_WRONLY) < 0) {
3154 fprintf(stderr, "Could not open '%s'\n", filename);
3155 exit(1);
3156 }
3157 }
3158
3159 memset(ap, 0, sizeof(*ap));
3160 if (av_set_parameters(oc, ap) < 0) {
3161 fprintf(stderr, "%s: Invalid encoding parameters\n",
3162 oc->filename);
3163 exit(1);
3164 }
3165
3166 oc->preload= (int)(mux_preload*AV_TIME_BASE);
3167 oc->max_delay= (int)(mux_max_delay*AV_TIME_BASE);
3168 oc->loop_output = loop_output;
3169
3170 for(i=0; i<opt_name_count; i++){
3171 AVOption *opt;
3172 double d = av_get_double(avformat_opts, opt_names[i], &opt);
3173 if(d==d && (opt->flags&AV_OPT_FLAG_ENCODING_PARAM))
3174 av_set_double(oc, opt_names[i], d);
3175 }
3176
3177 /* reset some options */
3178 file_oformat = NULL;
3179 file_iformat = NULL;
3180 }
3181
3182 /* prepare dummy protocols for grab */
3183 static void prepare_grab(void)
3184 {
3185 int has_video, has_audio, i, j;
3186 AVFormatContext *oc;
3187 AVFormatContext *ic;
3188 AVFormatParameters vp1, *vp = &vp1;
3189 AVFormatParameters ap1, *ap = &ap1;
3190
3191 /* see if audio/video inputs are needed */
3192 has_video = 0;
3193 has_audio = 0;
3194 memset(ap, 0, sizeof(*ap));
3195 memset(vp, 0, sizeof(*vp));
3196 vp->time_base.num= 1;
3197 for(j=0;j<nb_output_files;j++) {
3198 oc = output_files[j];
3199 for(i=0;i<oc->nb_streams;i++) {
3200 AVCodecContext *enc = oc->streams[i]->codec;
3201 switch(enc->codec_type) {
3202 case CODEC_TYPE_AUDIO:
3203 if (enc->sample_rate > ap->sample_rate)
3204 ap->sample_rate = enc->sample_rate;
3205 if (enc->channels > ap->channels)
3206 ap->channels = enc->channels;
3207 has_audio = 1;
3208 break;
3209 case CODEC_TYPE_VIDEO:
3210 if (enc->width > vp->width)
3211 vp->width = enc->width;
3212 if (enc->height > vp->height)
3213 vp->height = enc->height;
3214
3215 if (vp->time_base.num*(int64_t)enc->time_base.den > enc->time_base.num*(int64_t)vp->time_base.den){
3216 vp->time_base = enc->time_base;
3217 vp->width += frame_leftBand + frame_rightBand;
3218 vp->width -= (frame_padleft + frame_padright);
3219 vp->height += frame_topBand + frame_bottomBand;
3220 vp->height -= (frame_padtop + frame_padbottom);
3221 }
3222 has_video = 1;
3223 break;
3224 default:
3225 av_abort();
3226 }
3227 }
3228 }
3229
3230 if (has_video == 0 && has_audio == 0) {
3231 fprintf(stderr, "Output file must have at least one audio or video stream\n");
3232 exit(1);
3233 }
3234
3235 if (has_video) {
3236 AVInputFormat *fmt1;
3237 fmt1 = av_find_input_format(video_grab_format);
3238 vp->device = video_device;
3239 vp->channel = video_channel;
3240 vp->standard = video_standard;
3241 vp->pix_fmt = frame_pix_fmt;
3242 if (av_open_input_file(&ic, "", fmt1, 0, vp) < 0) {
3243 fprintf(stderr, "Could not find video grab device\n");
3244 exit(1);
3245 }
3246 /* If not enough info to get the stream parameters, we decode the
3247 first frames to get it. */
3248 if ((ic->ctx_flags & AVFMTCTX_NOHEADER) && av_find_stream_info(ic) < 0) {
3249 fprintf(stderr, "Could not find video grab parameters\n");
3250 exit(1);
3251 }
3252 /* by now video grab has one stream */
3253 ic->streams[0]->r_frame_rate.num = vp->time_base.den;
3254 ic->streams[0]->r_frame_rate.den = vp->time_base.num;
3255 input_files[nb_input_files] = ic;
3256
3257 if (verbose