cff9dbc033632dc5de649d62a7d79314ffc71487
[ffmpeg.git] / ffmpeg.c
1 /*
2  * Copyright (c) 2000-2003 Fabrice Bellard
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20
21 /**
22  * @file
23  * multimedia converter based on the FFmpeg libraries
24  */
25
26 #include "config.h"
27 #include <ctype.h>
28 #include <string.h>
29 #include <math.h>
30 #include <stdlib.h>
31 #include <errno.h>
32 #include <limits.h>
33 #include <stdint.h>
34
35 #if HAVE_ISATTY
36 #if HAVE_IO_H
37 #include <io.h>
38 #endif
39 #if HAVE_UNISTD_H
40 #include <unistd.h>
41 #endif
42 #endif
43
44 #include "libavformat/avformat.h"
45 #include "libavdevice/avdevice.h"
46 #include "libswresample/swresample.h"
47 #include "libavutil/opt.h"
48 #include "libavutil/channel_layout.h"
49 #include "libavutil/parseutils.h"
50 #include "libavutil/samplefmt.h"
51 #include "libavutil/fifo.h"
52 #include "libavutil/intreadwrite.h"
53 #include "libavutil/dict.h"
54 #include "libavutil/mathematics.h"
55 #include "libavutil/pixdesc.h"
56 #include "libavutil/avstring.h"
57 #include "libavutil/libm.h"
58 #include "libavutil/imgutils.h"
59 #include "libavutil/timestamp.h"
60 #include "libavutil/bprint.h"
61 #include "libavutil/time.h"
62 #include "libavutil/threadmessage.h"
63 #include "libavcodec/mathops.h"
64 #include "libavformat/os_support.h"
65
66 # include "libavfilter/avcodec.h"
67 # include "libavfilter/avfilter.h"
68 # include "libavfilter/buffersrc.h"
69 # include "libavfilter/buffersink.h"
70
71 #if HAVE_SYS_RESOURCE_H
72 #include <sys/time.h>
73 #include <sys/types.h>
74 #include <sys/resource.h>
75 #elif HAVE_GETPROCESSTIMES
76 #include <windows.h>
77 #endif
78 #if HAVE_GETPROCESSMEMORYINFO
79 #include <windows.h>
80 #include <psapi.h>
81 #endif
82 #if HAVE_SETCONSOLECTRLHANDLER
83 #include <windows.h>
84 #endif
85
86
87 #if HAVE_SYS_SELECT_H
88 #include <sys/select.h>
89 #endif
90
91 #if HAVE_TERMIOS_H
92 #include <fcntl.h>
93 #include <sys/ioctl.h>
94 #include <sys/time.h>
95 #include <termios.h>
96 #elif HAVE_KBHIT
97 #include <conio.h>
98 #endif
99
100 #if HAVE_PTHREADS
101 #include <pthread.h>
102 #endif
103
104 #include <time.h>
105
106 #include "ffmpeg.h"
107 #include "cmdutils.h"
108
109 #include "libavutil/avassert.h"
110
111 const char program_name[] = "ffmpeg";
112 const int program_birth_year = 2000;
113
114 static FILE *vstats_file;
115
116 const char *const forced_keyframes_const_names[] = {
117     "n",
118     "n_forced",
119     "prev_forced_n",
120     "prev_forced_t",
121     "t",
122     NULL
123 };
124
125 static void do_video_stats(OutputStream *ost, int frame_size);
126 static int64_t getutime(void);
127 static int64_t getmaxrss(void);
128
129 static int run_as_daemon  = 0;
130 static int nb_frames_dup = 0;
131 static int nb_frames_drop = 0;
132 static int64_t decode_error_stat[2];
133
134 static int current_time;
135 AVIOContext *progress_avio = NULL;
136
137 static uint8_t *subtitle_out;
138
139 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
140
141 InputStream **input_streams = NULL;
142 int        nb_input_streams = 0;
143 InputFile   **input_files   = NULL;
144 int        nb_input_files   = 0;
145
146 OutputStream **output_streams = NULL;
147 int         nb_output_streams = 0;
148 OutputFile   **output_files   = NULL;
149 int         nb_output_files   = 0;
150
151 FilterGraph **filtergraphs;
152 int        nb_filtergraphs;
153
154 #if HAVE_TERMIOS_H
155
156 /* init terminal so that we can grab keys */
157 static struct termios oldtty;
158 static int restore_tty;
159 #endif
160
161 #if HAVE_PTHREADS
162 static void free_input_threads(void);
163 #endif
164
165 /* sub2video hack:
166    Convert subtitles to video with alpha to insert them in filter graphs.
167    This is a temporary solution until libavfilter gets real subtitles support.
168  */
169
170 static int sub2video_get_blank_frame(InputStream *ist)
171 {
172     int ret;
173     AVFrame *frame = ist->sub2video.frame;
174
175     av_frame_unref(frame);
176     ist->sub2video.frame->width  = ist->sub2video.w;
177     ist->sub2video.frame->height = ist->sub2video.h;
178     ist->sub2video.frame->format = AV_PIX_FMT_RGB32;
179     if ((ret = av_frame_get_buffer(frame, 32)) < 0)
180         return ret;
181     memset(frame->data[0], 0, frame->height * frame->linesize[0]);
182     return 0;
183 }
184
185 static void sub2video_copy_rect(uint8_t *dst, int dst_linesize, int w, int h,
186                                 AVSubtitleRect *r)
187 {
188     uint32_t *pal, *dst2;
189     uint8_t *src, *src2;
190     int x, y;
191
192     if (r->type != SUBTITLE_BITMAP) {
193         av_log(NULL, AV_LOG_WARNING, "sub2video: non-bitmap subtitle\n");
194         return;
195     }
196     if (r->x < 0 || r->x + r->w > w || r->y < 0 || r->y + r->h > h) {
197         av_log(NULL, AV_LOG_WARNING, "sub2video: rectangle overflowing\n");
198         return;
199     }
200
201     dst += r->y * dst_linesize + r->x * 4;
202     src = r->pict.data[0];
203     pal = (uint32_t *)r->pict.data[1];
204     for (y = 0; y < r->h; y++) {
205         dst2 = (uint32_t *)dst;
206         src2 = src;
207         for (x = 0; x < r->w; x++)
208             *(dst2++) = pal[*(src2++)];
209         dst += dst_linesize;
210         src += r->pict.linesize[0];
211     }
212 }
213
214 static void sub2video_push_ref(InputStream *ist, int64_t pts)
215 {
216     AVFrame *frame = ist->sub2video.frame;
217     int i;
218
219     av_assert1(frame->data[0]);
220     ist->sub2video.last_pts = frame->pts = pts;
221     for (i = 0; i < ist->nb_filters; i++)
222         av_buffersrc_add_frame_flags(ist->filters[i]->filter, frame,
223                                      AV_BUFFERSRC_FLAG_KEEP_REF |
224                                      AV_BUFFERSRC_FLAG_PUSH);
225 }
226
227 static void sub2video_update(InputStream *ist, AVSubtitle *sub)
228 {
229     int w = ist->sub2video.w, h = ist->sub2video.h;
230     AVFrame *frame = ist->sub2video.frame;
231     int8_t *dst;
232     int     dst_linesize;
233     int num_rects, i;
234     int64_t pts, end_pts;
235
236     if (!frame)
237         return;
238     if (sub) {
239         pts       = av_rescale_q(sub->pts + sub->start_display_time * 1000LL,
240                                  AV_TIME_BASE_Q, ist->st->time_base);
241         end_pts   = av_rescale_q(sub->pts + sub->end_display_time   * 1000LL,
242                                  AV_TIME_BASE_Q, ist->st->time_base);
243         num_rects = sub->num_rects;
244     } else {
245         pts       = ist->sub2video.end_pts;
246         end_pts   = INT64_MAX;
247         num_rects = 0;
248     }
249     if (sub2video_get_blank_frame(ist) < 0) {
250         av_log(ist->dec_ctx, AV_LOG_ERROR,
251                "Impossible to get a blank canvas.\n");
252         return;
253     }
254     dst          = frame->data    [0];
255     dst_linesize = frame->linesize[0];
256     for (i = 0; i < num_rects; i++)
257         sub2video_copy_rect(dst, dst_linesize, w, h, sub->rects[i]);
258     sub2video_push_ref(ist, pts);
259     ist->sub2video.end_pts = end_pts;
260 }
261
262 static void sub2video_heartbeat(InputStream *ist, int64_t pts)
263 {
264     InputFile *infile = input_files[ist->file_index];
265     int i, j, nb_reqs;
266     int64_t pts2;
267
268     /* When a frame is read from a file, examine all sub2video streams in
269        the same file and send the sub2video frame again. Otherwise, decoded
270        video frames could be accumulating in the filter graph while a filter
271        (possibly overlay) is desperately waiting for a subtitle frame. */
272     for (i = 0; i < infile->nb_streams; i++) {
273         InputStream *ist2 = input_streams[infile->ist_index + i];
274         if (!ist2->sub2video.frame)
275             continue;
276         /* subtitles seem to be usually muxed ahead of other streams;
277            if not, subtracting a larger time here is necessary */
278         pts2 = av_rescale_q(pts, ist->st->time_base, ist2->st->time_base) - 1;
279         /* do not send the heartbeat frame if the subtitle is already ahead */
280         if (pts2 <= ist2->sub2video.last_pts)
281             continue;
282         if (pts2 >= ist2->sub2video.end_pts || !ist2->sub2video.frame->data[0])
283             sub2video_update(ist2, NULL);
284         for (j = 0, nb_reqs = 0; j < ist2->nb_filters; j++)
285             nb_reqs += av_buffersrc_get_nb_failed_requests(ist2->filters[j]->filter);
286         if (nb_reqs)
287             sub2video_push_ref(ist2, pts2);
288     }
289 }
290
291 static void sub2video_flush(InputStream *ist)
292 {
293     int i;
294
295     if (ist->sub2video.end_pts < INT64_MAX)
296         sub2video_update(ist, NULL);
297     for (i = 0; i < ist->nb_filters; i++)
298         av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
299 }
300
301 /* end of sub2video hack */
302
303 static void term_exit_sigsafe(void)
304 {
305 #if HAVE_TERMIOS_H
306     if(restore_tty)
307         tcsetattr (0, TCSANOW, &oldtty);
308 #endif
309 }
310
311 void term_exit(void)
312 {
313     av_log(NULL, AV_LOG_QUIET, "%s", "");
314     term_exit_sigsafe();
315 }
316
317 static volatile int received_sigterm = 0;
318 static volatile int received_nb_signals = 0;
319 static volatile int transcode_init_done = 0;
320 static volatile int ffmpeg_exited = 0;
321 static int main_return_code = 0;
322
323 static void
324 sigterm_handler(int sig)
325 {
326     received_sigterm = sig;
327     received_nb_signals++;
328     term_exit_sigsafe();
329     if(received_nb_signals > 3) {
330         write(2/*STDERR_FILENO*/, "Received > 3 system signals, hard exiting\n",
331                            strlen("Received > 3 system signals, hard exiting\n"));
332
333         exit(123);
334     }
335 }
336
337 #if HAVE_SETCONSOLECTRLHANDLER
338 static BOOL WINAPI CtrlHandler(DWORD fdwCtrlType)
339 {
340     av_log(NULL, AV_LOG_DEBUG, "\nReceived windows signal %ld\n", fdwCtrlType);
341
342     switch (fdwCtrlType)
343     {
344     case CTRL_C_EVENT:
345     case CTRL_BREAK_EVENT:
346         sigterm_handler(SIGINT);
347         return TRUE;
348
349     case CTRL_CLOSE_EVENT:
350     case CTRL_LOGOFF_EVENT:
351     case CTRL_SHUTDOWN_EVENT:
352         sigterm_handler(SIGTERM);
353         /* Basically, with these 3 events, when we return from this method the
354            process is hard terminated, so stall as long as we need to
355            to try and let the main thread(s) clean up and gracefully terminate
356            (we have at most 5 seconds, but should be done far before that). */
357         while (!ffmpeg_exited) {
358             Sleep(0);
359         }
360         return TRUE;
361
362     default:
363         av_log(NULL, AV_LOG_ERROR, "Received unknown windows signal %ld\n", fdwCtrlType);
364         return FALSE;
365     }
366 }
367 #endif
368
369 void term_init(void)
370 {
371 #if HAVE_TERMIOS_H
372     if(!run_as_daemon){
373         struct termios tty;
374         int istty = 1;
375 #if HAVE_ISATTY
376         istty = isatty(0) && isatty(2);
377 #endif
378         if (istty && tcgetattr (0, &tty) == 0) {
379             oldtty = tty;
380             restore_tty = 1;
381
382             tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
383                              |INLCR|IGNCR|ICRNL|IXON);
384             tty.c_oflag |= OPOST;
385             tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
386             tty.c_cflag &= ~(CSIZE|PARENB);
387             tty.c_cflag |= CS8;
388             tty.c_cc[VMIN] = 1;
389             tty.c_cc[VTIME] = 0;
390
391             tcsetattr (0, TCSANOW, &tty);
392         }
393         signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
394     }
395 #endif
396
397     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
398     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
399 #ifdef SIGXCPU
400     signal(SIGXCPU, sigterm_handler);
401 #endif
402 #if HAVE_SETCONSOLECTRLHANDLER
403     SetConsoleCtrlHandler((PHANDLER_ROUTINE) CtrlHandler, TRUE);
404 #endif
405 }
406
407 /* read a key without blocking */
408 static int read_key(void)
409 {
410     unsigned char ch;
411 #if HAVE_TERMIOS_H
412     int n = 1;
413     struct timeval tv;
414     fd_set rfds;
415
416     FD_ZERO(&rfds);
417     FD_SET(0, &rfds);
418     tv.tv_sec = 0;
419     tv.tv_usec = 0;
420     n = select(1, &rfds, NULL, NULL, &tv);
421     if (n > 0) {
422         n = read(0, &ch, 1);
423         if (n == 1)
424             return ch;
425
426         return n;
427     }
428 #elif HAVE_KBHIT
429 #    if HAVE_PEEKNAMEDPIPE
430     static int is_pipe;
431     static HANDLE input_handle;
432     DWORD dw, nchars;
433     if(!input_handle){
434         input_handle = GetStdHandle(STD_INPUT_HANDLE);
435         is_pipe = !GetConsoleMode(input_handle, &dw);
436     }
437
438     if (stdin->_cnt > 0) {
439         read(0, &ch, 1);
440         return ch;
441     }
442     if (is_pipe) {
443         /* When running under a GUI, you will end here. */
444         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL)) {
445             // input pipe may have been closed by the program that ran ffmpeg
446             return -1;
447         }
448         //Read it
449         if(nchars != 0) {
450             read(0, &ch, 1);
451             return ch;
452         }else{
453             return -1;
454         }
455     }
456 #    endif
457     if(kbhit())
458         return(getch());
459 #endif
460     return -1;
461 }
462
463 static int decode_interrupt_cb(void *ctx)
464 {
465     return received_nb_signals > transcode_init_done;
466 }
467
468 const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
469
470 static void ffmpeg_cleanup(int ret)
471 {
472     int i, j;
473
474     if (do_benchmark) {
475         int maxrss = getmaxrss() / 1024;
476         av_log(NULL, AV_LOG_INFO, "bench: maxrss=%ikB\n", maxrss);
477     }
478
479     for (i = 0; i < nb_filtergraphs; i++) {
480         FilterGraph *fg = filtergraphs[i];
481         avfilter_graph_free(&fg->graph);
482         for (j = 0; j < fg->nb_inputs; j++) {
483             av_freep(&fg->inputs[j]->name);
484             av_freep(&fg->inputs[j]);
485         }
486         av_freep(&fg->inputs);
487         for (j = 0; j < fg->nb_outputs; j++) {
488             av_freep(&fg->outputs[j]->name);
489             av_freep(&fg->outputs[j]);
490         }
491         av_freep(&fg->outputs);
492         av_freep(&fg->graph_desc);
493
494         av_freep(&filtergraphs[i]);
495     }
496     av_freep(&filtergraphs);
497
498     av_freep(&subtitle_out);
499
500     /* close files */
501     for (i = 0; i < nb_output_files; i++) {
502         OutputFile *of = output_files[i];
503         AVFormatContext *s = of->ctx;
504         if (s && s->oformat && !(s->oformat->flags & AVFMT_NOFILE))
505             avio_closep(&s->pb);
506         avformat_free_context(s);
507         av_dict_free(&of->opts);
508
509         av_freep(&output_files[i]);
510     }
511     for (i = 0; i < nb_output_streams; i++) {
512         OutputStream *ost = output_streams[i];
513         AVBitStreamFilterContext *bsfc;
514
515         if (!ost)
516             continue;
517
518         bsfc = ost->bitstream_filters;
519         while (bsfc) {
520             AVBitStreamFilterContext *next = bsfc->next;
521             av_bitstream_filter_close(bsfc);
522             bsfc = next;
523         }
524         ost->bitstream_filters = NULL;
525         av_frame_free(&ost->filtered_frame);
526         av_frame_free(&ost->last_frame);
527
528         av_parser_close(ost->parser);
529
530         av_freep(&ost->forced_keyframes);
531         av_expr_free(ost->forced_keyframes_pexpr);
532         av_freep(&ost->avfilter);
533         av_freep(&ost->logfile_prefix);
534
535         av_freep(&ost->audio_channels_map);
536         ost->audio_channels_mapped = 0;
537
538         avcodec_free_context(&ost->enc_ctx);
539
540         av_freep(&output_streams[i]);
541     }
542 #if HAVE_PTHREADS
543     free_input_threads();
544 #endif
545     for (i = 0; i < nb_input_files; i++) {
546         avformat_close_input(&input_files[i]->ctx);
547         av_freep(&input_files[i]);
548     }
549     for (i = 0; i < nb_input_streams; i++) {
550         InputStream *ist = input_streams[i];
551
552         av_frame_free(&ist->decoded_frame);
553         av_frame_free(&ist->filter_frame);
554         av_dict_free(&ist->decoder_opts);
555         avsubtitle_free(&ist->prev_sub.subtitle);
556         av_frame_free(&ist->sub2video.frame);
557         av_freep(&ist->filters);
558         av_freep(&ist->hwaccel_device);
559
560         avcodec_free_context(&ist->dec_ctx);
561
562         av_freep(&input_streams[i]);
563     }
564
565     if (vstats_file)
566         fclose(vstats_file);
567     av_freep(&vstats_filename);
568
569     av_freep(&input_streams);
570     av_freep(&input_files);
571     av_freep(&output_streams);
572     av_freep(&output_files);
573
574     uninit_opts();
575
576     avformat_network_deinit();
577
578     if (received_sigterm) {
579         av_log(NULL, AV_LOG_INFO, "Exiting normally, received signal %d.\n",
580                (int) received_sigterm);
581     } else if (ret && transcode_init_done) {
582         av_log(NULL, AV_LOG_INFO, "Conversion failed!\n");
583     }
584     term_exit();
585     ffmpeg_exited = 1;
586 }
587
588 void remove_avoptions(AVDictionary **a, AVDictionary *b)
589 {
590     AVDictionaryEntry *t = NULL;
591
592     while ((t = av_dict_get(b, "", t, AV_DICT_IGNORE_SUFFIX))) {
593         av_dict_set(a, t->key, NULL, AV_DICT_MATCH_CASE);
594     }
595 }
596
597 void assert_avoptions(AVDictionary *m)
598 {
599     AVDictionaryEntry *t;
600     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
601         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
602         exit_program(1);
603     }
604 }
605
606 static void abort_codec_experimental(AVCodec *c, int encoder)
607 {
608     exit_program(1);
609 }
610
611 static void update_benchmark(const char *fmt, ...)
612 {
613     if (do_benchmark_all) {
614         int64_t t = getutime();
615         va_list va;
616         char buf[1024];
617
618         if (fmt) {
619             va_start(va, fmt);
620             vsnprintf(buf, sizeof(buf), fmt, va);
621             va_end(va);
622             av_log(NULL, AV_LOG_INFO, "bench: %8"PRIu64" %s \n", t - current_time, buf);
623         }
624         current_time = t;
625     }
626 }
627
628 static void close_all_output_streams(OutputStream *ost, OSTFinished this_stream, OSTFinished others)
629 {
630     int i;
631     for (i = 0; i < nb_output_streams; i++) {
632         OutputStream *ost2 = output_streams[i];
633         ost2->finished |= ost == ost2 ? this_stream : others;
634     }
635 }
636
637 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
638 {
639     AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
640     AVCodecContext          *avctx = ost->encoding_needed ? ost->enc_ctx : ost->st->codec;
641     int ret;
642
643     if (!ost->st->codec->extradata_size && ost->enc_ctx->extradata_size) {
644         ost->st->codec->extradata = av_mallocz(ost->enc_ctx->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
645         if (ost->st->codec->extradata) {
646             memcpy(ost->st->codec->extradata, ost->enc_ctx->extradata, ost->enc_ctx->extradata_size);
647             ost->st->codec->extradata_size = ost->enc_ctx->extradata_size;
648         }
649     }
650
651     if ((avctx->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
652         (avctx->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
653         pkt->pts = pkt->dts = AV_NOPTS_VALUE;
654
655     /*
656      * Audio encoders may split the packets --  #frames in != #packets out.
657      * But there is no reordering, so we can limit the number of output packets
658      * by simply dropping them here.
659      * Counting encoded video frames needs to be done separately because of
660      * reordering, see do_video_out()
661      */
662     if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
663         if (ost->frame_number >= ost->max_frames) {
664             av_free_packet(pkt);
665             return;
666         }
667         ost->frame_number++;
668     }
669
670     if (bsfc)
671         av_packet_split_side_data(pkt);
672
673     while (bsfc) {
674         AVPacket new_pkt = *pkt;
675         AVDictionaryEntry *bsf_arg = av_dict_get(ost->bsf_args,
676                                                  bsfc->filter->name,
677                                                  NULL, 0);
678         int a = av_bitstream_filter_filter(bsfc, avctx,
679                                            bsf_arg ? bsf_arg->value : NULL,
680                                            &new_pkt.data, &new_pkt.size,
681                                            pkt->data, pkt->size,
682                                            pkt->flags & AV_PKT_FLAG_KEY);
683         if(a == 0 && new_pkt.data != pkt->data && new_pkt.destruct) {
684             uint8_t *t = av_malloc(new_pkt.size + FF_INPUT_BUFFER_PADDING_SIZE); //the new should be a subset of the old so cannot overflow
685             if(t) {
686                 memcpy(t, new_pkt.data, new_pkt.size);
687                 memset(t + new_pkt.size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
688                 new_pkt.data = t;
689                 new_pkt.buf = NULL;
690                 a = 1;
691             } else
692                 a = AVERROR(ENOMEM);
693         }
694         if (a > 0) {
695             pkt->side_data = NULL;
696             pkt->side_data_elems = 0;
697             av_free_packet(pkt);
698             new_pkt.buf = av_buffer_create(new_pkt.data, new_pkt.size,
699                                            av_buffer_default_free, NULL, 0);
700             if (!new_pkt.buf)
701                 exit_program(1);
702         } else if (a < 0) {
703             new_pkt = *pkt;
704             av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
705                    bsfc->filter->name, pkt->stream_index,
706                    avctx->codec ? avctx->codec->name : "copy");
707             print_error("", a);
708             if (exit_on_error)
709                 exit_program(1);
710         }
711         *pkt = new_pkt;
712
713         bsfc = bsfc->next;
714     }
715
716     if (!(s->oformat->flags & AVFMT_NOTIMESTAMPS)) {
717         if (pkt->dts != AV_NOPTS_VALUE &&
718             pkt->pts != AV_NOPTS_VALUE &&
719             pkt->dts > pkt->pts) {
720             av_log(s, AV_LOG_WARNING, "Invalid DTS: %"PRId64" PTS: %"PRId64" in output stream %d:%d, replacing by guess\n",
721                    pkt->dts, pkt->pts,
722                    ost->file_index, ost->st->index);
723             pkt->pts =
724             pkt->dts = pkt->pts + pkt->dts + ost->last_mux_dts + 1
725                      - FFMIN3(pkt->pts, pkt->dts, ost->last_mux_dts + 1)
726                      - FFMAX3(pkt->pts, pkt->dts, ost->last_mux_dts + 1);
727         }
728      if(
729         (avctx->codec_type == AVMEDIA_TYPE_AUDIO || avctx->codec_type == AVMEDIA_TYPE_VIDEO) &&
730         pkt->dts != AV_NOPTS_VALUE &&
731         ost->last_mux_dts != AV_NOPTS_VALUE) {
732       int64_t max = ost->last_mux_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
733       if (pkt->dts < max) {
734         int loglevel = max - pkt->dts > 2 || avctx->codec_type == AVMEDIA_TYPE_VIDEO ? AV_LOG_WARNING : AV_LOG_DEBUG;
735         av_log(s, loglevel, "Non-monotonous DTS in output stream "
736                "%d:%d; previous: %"PRId64", current: %"PRId64"; ",
737                ost->file_index, ost->st->index, ost->last_mux_dts, pkt->dts);
738         if (exit_on_error) {
739             av_log(NULL, AV_LOG_FATAL, "aborting.\n");
740             exit_program(1);
741         }
742         av_log(s, loglevel, "changing to %"PRId64". This may result "
743                "in incorrect timestamps in the output file.\n",
744                max);
745         if(pkt->pts >= pkt->dts)
746             pkt->pts = FFMAX(pkt->pts, max);
747         pkt->dts = max;
748       }
749      }
750     }
751     ost->last_mux_dts = pkt->dts;
752
753     ost->data_size += pkt->size;
754     ost->packets_written++;
755
756     pkt->stream_index = ost->index;
757
758     if (debug_ts) {
759         av_log(NULL, AV_LOG_INFO, "muxer <- type:%s "
760                 "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s size:%d\n",
761                 av_get_media_type_string(ost->enc_ctx->codec_type),
762                 av_ts2str(pkt->pts), av_ts2timestr(pkt->pts, &ost->st->time_base),
763                 av_ts2str(pkt->dts), av_ts2timestr(pkt->dts, &ost->st->time_base),
764                 pkt->size
765               );
766     }
767
768     ret = av_interleaved_write_frame(s, pkt);
769     if (ret < 0) {
770         print_error("av_interleaved_write_frame()", ret);
771         main_return_code = 1;
772         close_all_output_streams(ost, MUXER_FINISHED | ENCODER_FINISHED, ENCODER_FINISHED);
773     }
774     av_free_packet(pkt);
775 }
776
777 static void close_output_stream(OutputStream *ost)
778 {
779     OutputFile *of = output_files[ost->file_index];
780
781     ost->finished |= ENCODER_FINISHED;
782     if (of->shortest) {
783         int64_t end = av_rescale_q(ost->sync_opts - ost->first_pts, ost->enc_ctx->time_base, AV_TIME_BASE_Q);
784         of->recording_time = FFMIN(of->recording_time, end);
785     }
786 }
787
788 static int check_recording_time(OutputStream *ost)
789 {
790     OutputFile *of = output_files[ost->file_index];
791
792     if (of->recording_time != INT64_MAX &&
793         av_compare_ts(ost->sync_opts - ost->first_pts, ost->enc_ctx->time_base, of->recording_time,
794                       AV_TIME_BASE_Q) >= 0) {
795         close_output_stream(ost);
796         return 0;
797     }
798     return 1;
799 }
800
801 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
802                          AVFrame *frame)
803 {
804     AVCodecContext *enc = ost->enc_ctx;
805     AVPacket pkt;
806     int got_packet = 0;
807
808     av_init_packet(&pkt);
809     pkt.data = NULL;
810     pkt.size = 0;
811
812     if (!check_recording_time(ost))
813         return;
814
815     if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
816         frame->pts = ost->sync_opts;
817     ost->sync_opts = frame->pts + frame->nb_samples;
818     ost->samples_encoded += frame->nb_samples;
819     ost->frames_encoded++;
820
821     av_assert0(pkt.size || !pkt.data);
822     update_benchmark(NULL);
823     if (debug_ts) {
824         av_log(NULL, AV_LOG_INFO, "encoder <- type:audio "
825                "frame_pts:%s frame_pts_time:%s time_base:%d/%d\n",
826                av_ts2str(frame->pts), av_ts2timestr(frame->pts, &enc->time_base),
827                enc->time_base.num, enc->time_base.den);
828     }
829
830     if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
831         av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
832         exit_program(1);
833     }
834     update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
835
836     if (got_packet) {
837         av_packet_rescale_ts(&pkt, enc->time_base, ost->st->time_base);
838
839         if (debug_ts) {
840             av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
841                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
842                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
843                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
844         }
845
846         write_frame(s, &pkt, ost);
847     }
848 }
849
850 static void do_subtitle_out(AVFormatContext *s,
851                             OutputStream *ost,
852                             InputStream *ist,
853                             AVSubtitle *sub)
854 {
855     int subtitle_out_max_size = 1024 * 1024;
856     int subtitle_out_size, nb, i;
857     AVCodecContext *enc;
858     AVPacket pkt;
859     int64_t pts;
860
861     if (sub->pts == AV_NOPTS_VALUE) {
862         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
863         if (exit_on_error)
864             exit_program(1);
865         return;
866     }
867
868     enc = ost->enc_ctx;
869
870     if (!subtitle_out) {
871         subtitle_out = av_malloc(subtitle_out_max_size);
872         if (!subtitle_out) {
873             av_log(NULL, AV_LOG_FATAL, "Failed to allocate subtitle_out\n");
874             exit_program(1);
875         }
876     }
877
878     /* Note: DVB subtitle need one packet to draw them and one other
879        packet to clear them */
880     /* XXX: signal it in the codec context ? */
881     if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE)
882         nb = 2;
883     else
884         nb = 1;
885
886     /* shift timestamp to honor -ss and make check_recording_time() work with -t */
887     pts = sub->pts;
888     if (output_files[ost->file_index]->start_time != AV_NOPTS_VALUE)
889         pts -= output_files[ost->file_index]->start_time;
890     for (i = 0; i < nb; i++) {
891         unsigned save_num_rects = sub->num_rects;
892
893         ost->sync_opts = av_rescale_q(pts, AV_TIME_BASE_Q, enc->time_base);
894         if (!check_recording_time(ost))
895             return;
896
897         sub->pts = pts;
898         // start_display_time is required to be 0
899         sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
900         sub->end_display_time  -= sub->start_display_time;
901         sub->start_display_time = 0;
902         if (i == 1)
903             sub->num_rects = 0;
904
905         ost->frames_encoded++;
906
907         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
908                                                     subtitle_out_max_size, sub);
909         if (i == 1)
910             sub->num_rects = save_num_rects;
911         if (subtitle_out_size < 0) {
912             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
913             exit_program(1);
914         }
915
916         av_init_packet(&pkt);
917         pkt.data = subtitle_out;
918         pkt.size = subtitle_out_size;
919         pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
920         pkt.duration = av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->st->time_base);
921         if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
922             /* XXX: the pts correction is handled here. Maybe handling
923                it in the codec would be better */
924             if (i == 0)
925                 pkt.pts += 90 * sub->start_display_time;
926             else
927                 pkt.pts += 90 * sub->end_display_time;
928         }
929         pkt.dts = pkt.pts;
930         write_frame(s, &pkt, ost);
931     }
932 }
933
934 static void do_video_out(AVFormatContext *s,
935                          OutputStream *ost,
936                          AVFrame *next_picture,
937                          double sync_ipts)
938 {
939     int ret, format_video_sync;
940     AVPacket pkt;
941     AVCodecContext *enc = ost->enc_ctx;
942     AVCodecContext *mux_enc = ost->st->codec;
943     int nb_frames, nb0_frames, i;
944     double delta, delta0;
945     double duration = 0;
946     int frame_size = 0;
947     InputStream *ist = NULL;
948     AVFilterContext *filter = ost->filter->filter;
949
950     if (ost->source_index >= 0)
951         ist = input_streams[ost->source_index];
952
953     if (filter->inputs[0]->frame_rate.num > 0 &&
954         filter->inputs[0]->frame_rate.den > 0)
955         duration = 1/(av_q2d(filter->inputs[0]->frame_rate) * av_q2d(enc->time_base));
956
957     if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
958         duration = FFMIN(duration, 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base)));
959
960     if (!ost->filters_script &&
961         !ost->filters &&
962         next_picture &&
963         ist &&
964         lrintf(av_frame_get_pkt_duration(next_picture) * av_q2d(ist->st->time_base) / av_q2d(enc->time_base)) > 0) {
965         duration = lrintf(av_frame_get_pkt_duration(next_picture) * av_q2d(ist->st->time_base) / av_q2d(enc->time_base));
966     }
967
968     if (!next_picture) {
969         //end, flushing
970         nb0_frames = nb_frames = mid_pred(ost->last_nb0_frames[0],
971                                           ost->last_nb0_frames[1],
972                                           ost->last_nb0_frames[2]);
973     } else {
974         delta0 = sync_ipts - ost->sync_opts;
975         delta  = delta0 + duration;
976
977         /* by default, we output a single frame */
978         nb0_frames = 0;
979         nb_frames = 1;
980
981         format_video_sync = video_sync_method;
982         if (format_video_sync == VSYNC_AUTO) {
983             if(!strcmp(s->oformat->name, "avi")) {
984                 format_video_sync = VSYNC_VFR;
985             } else
986                 format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : VSYNC_CFR;
987             if (   ist
988                 && format_video_sync == VSYNC_CFR
989                 && input_files[ist->file_index]->ctx->nb_streams == 1
990                 && input_files[ist->file_index]->input_ts_offset == 0) {
991                 format_video_sync = VSYNC_VSCFR;
992             }
993             if (format_video_sync == VSYNC_CFR && copy_ts) {
994                 format_video_sync = VSYNC_VSCFR;
995             }
996         }
997
998         if (delta0 < 0 &&
999             delta > 0 &&
1000             format_video_sync != VSYNC_PASSTHROUGH &&
1001             format_video_sync != VSYNC_DROP) {
1002             double cor = FFMIN(-delta0, duration);
1003             if (delta0 < -0.6) {
1004                 av_log(NULL, AV_LOG_WARNING, "Past duration %f too large\n", -delta0);
1005             } else
1006                 av_log(NULL, AV_LOG_DEBUG, "Cliping frame in rate conversion by %f\n", -delta0);
1007             sync_ipts += cor;
1008             duration -= cor;
1009             delta0 += cor;
1010         }
1011
1012         switch (format_video_sync) {
1013         case VSYNC_VSCFR:
1014             if (ost->frame_number == 0 && delta - duration >= 0.5) {
1015                 av_log(NULL, AV_LOG_DEBUG, "Not duplicating %d initial frames\n", (int)lrintf(delta - duration));
1016                 delta = duration;
1017                 delta0 = 0;
1018                 ost->sync_opts = lrint(sync_ipts);
1019             }
1020         case VSYNC_CFR:
1021             // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1022             if (frame_drop_threshold && delta < frame_drop_threshold && ost->frame_number) {
1023                 nb_frames = 0;
1024             } else if (delta < -1.1)
1025                 nb_frames = 0;
1026             else if (delta > 1.1) {
1027                 nb_frames = lrintf(delta);
1028                 if (delta0 > 1.1)
1029                     nb0_frames = lrintf(delta0 - 0.6);
1030             }
1031             break;
1032         case VSYNC_VFR:
1033             if (delta <= -0.6)
1034                 nb_frames = 0;
1035             else if (delta > 0.6)
1036                 ost->sync_opts = lrint(sync_ipts);
1037             break;
1038         case VSYNC_DROP:
1039         case VSYNC_PASSTHROUGH:
1040             ost->sync_opts = lrint(sync_ipts);
1041             break;
1042         default:
1043             av_assert0(0);
1044         }
1045     }
1046
1047     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
1048     nb0_frames = FFMIN(nb0_frames, nb_frames);
1049
1050     memmove(ost->last_nb0_frames + 1,
1051             ost->last_nb0_frames,
1052             sizeof(ost->last_nb0_frames[0]) * (FF_ARRAY_ELEMS(ost->last_nb0_frames) - 1));
1053     ost->last_nb0_frames[0] = nb0_frames;
1054
1055     if (nb0_frames == 0 && ost->last_droped) {
1056         nb_frames_drop++;
1057         av_log(NULL, AV_LOG_VERBOSE,
1058                "*** dropping frame %d from stream %d at ts %"PRId64"\n",
1059                ost->frame_number, ost->st->index, ost->last_frame->pts);
1060     }
1061     if (nb_frames > (nb0_frames && ost->last_droped) + (nb_frames > nb0_frames)) {
1062         if (nb_frames > dts_error_threshold * 30) {
1063             av_log(NULL, AV_LOG_ERROR, "%d frame duplication too large, skipping\n", nb_frames - 1);
1064             nb_frames_drop++;
1065             return;
1066         }
1067         nb_frames_dup += nb_frames - (nb0_frames && ost->last_droped) - (nb_frames > nb0_frames);
1068         av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
1069     }
1070     ost->last_droped = nb_frames == nb0_frames && next_picture;
1071
1072   /* duplicates frame if needed */
1073   for (i = 0; i < nb_frames; i++) {
1074     AVFrame *in_picture;
1075     av_init_packet(&pkt);
1076     pkt.data = NULL;
1077     pkt.size = 0;
1078
1079     if (i < nb0_frames && ost->last_frame) {
1080         in_picture = ost->last_frame;
1081     } else
1082         in_picture = next_picture;
1083
1084     if (!in_picture)
1085         return;
1086
1087     in_picture->pts = ost->sync_opts;
1088
1089 #if 1
1090     if (!check_recording_time(ost))
1091 #else
1092     if (ost->frame_number >= ost->max_frames)
1093 #endif
1094         return;
1095
1096     if (s->oformat->flags & AVFMT_RAWPICTURE &&
1097         enc->codec->id == AV_CODEC_ID_RAWVIDEO) {
1098         /* raw pictures are written as AVPicture structure to
1099            avoid any copies. We support temporarily the older
1100            method. */
1101         if (in_picture->interlaced_frame)
1102             mux_enc->field_order = in_picture->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
1103         else
1104             mux_enc->field_order = AV_FIELD_PROGRESSIVE;
1105         pkt.data   = (uint8_t *)in_picture;
1106         pkt.size   =  sizeof(AVPicture);
1107         pkt.pts    = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
1108         pkt.flags |= AV_PKT_FLAG_KEY;
1109
1110         write_frame(s, &pkt, ost);
1111     } else {
1112         int got_packet, forced_keyframe = 0;
1113         double pts_time;
1114
1115         if (enc->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME) &&
1116             ost->top_field_first >= 0)
1117             in_picture->top_field_first = !!ost->top_field_first;
1118
1119         if (in_picture->interlaced_frame) {
1120             if (enc->codec->id == AV_CODEC_ID_MJPEG)
1121                 mux_enc->field_order = in_picture->top_field_first ? AV_FIELD_TT:AV_FIELD_BB;
1122             else
1123                 mux_enc->field_order = in_picture->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
1124         } else
1125             mux_enc->field_order = AV_FIELD_PROGRESSIVE;
1126
1127         in_picture->quality = enc->global_quality;
1128         in_picture->pict_type = 0;
1129
1130         pts_time = in_picture->pts != AV_NOPTS_VALUE ?
1131             in_picture->pts * av_q2d(enc->time_base) : NAN;
1132         if (ost->forced_kf_index < ost->forced_kf_count &&
1133             in_picture->pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1134             ost->forced_kf_index++;
1135             forced_keyframe = 1;
1136         } else if (ost->forced_keyframes_pexpr) {
1137             double res;
1138             ost->forced_keyframes_expr_const_values[FKF_T] = pts_time;
1139             res = av_expr_eval(ost->forced_keyframes_pexpr,
1140                                ost->forced_keyframes_expr_const_values, NULL);
1141             av_dlog(NULL, "force_key_frame: n:%f n_forced:%f prev_forced_n:%f t:%f prev_forced_t:%f -> res:%f\n",
1142                     ost->forced_keyframes_expr_const_values[FKF_N],
1143                     ost->forced_keyframes_expr_const_values[FKF_N_FORCED],
1144                     ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N],
1145                     ost->forced_keyframes_expr_const_values[FKF_T],
1146                     ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T],
1147                     res);
1148             if (res) {
1149                 forced_keyframe = 1;
1150                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] =
1151                     ost->forced_keyframes_expr_const_values[FKF_N];
1152                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] =
1153                     ost->forced_keyframes_expr_const_values[FKF_T];
1154                 ost->forced_keyframes_expr_const_values[FKF_N_FORCED] += 1;
1155             }
1156
1157             ost->forced_keyframes_expr_const_values[FKF_N] += 1;
1158         } else if (   ost->forced_keyframes
1159                    && !strncmp(ost->forced_keyframes, "source", 6)
1160                    && in_picture->key_frame==1) {
1161             forced_keyframe = 1;
1162         }
1163
1164         if (forced_keyframe) {
1165             in_picture->pict_type = AV_PICTURE_TYPE_I;
1166             av_log(NULL, AV_LOG_DEBUG, "Forced keyframe at time %f\n", pts_time);
1167         }
1168
1169         update_benchmark(NULL);
1170         if (debug_ts) {
1171             av_log(NULL, AV_LOG_INFO, "encoder <- type:video "
1172                    "frame_pts:%s frame_pts_time:%s time_base:%d/%d\n",
1173                    av_ts2str(in_picture->pts), av_ts2timestr(in_picture->pts, &enc->time_base),
1174                    enc->time_base.num, enc->time_base.den);
1175         }
1176
1177         ost->frames_encoded++;
1178
1179         ret = avcodec_encode_video2(enc, &pkt, in_picture, &got_packet);
1180         update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
1181         if (ret < 0) {
1182             av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1183             exit_program(1);
1184         }
1185
1186         if (got_packet) {
1187             if (debug_ts) {
1188                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
1189                        "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
1190                        av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &enc->time_base),
1191                        av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &enc->time_base));
1192             }
1193
1194             if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
1195                 pkt.pts = ost->sync_opts;
1196
1197             av_packet_rescale_ts(&pkt, enc->time_base, ost->st->time_base);
1198
1199             if (debug_ts) {
1200                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
1201                     "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
1202                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
1203                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
1204             }
1205
1206             frame_size = pkt.size;
1207             write_frame(s, &pkt, ost);
1208
1209             /* if two pass, output log */
1210             if (ost->logfile && enc->stats_out) {
1211                 fprintf(ost->logfile, "%s", enc->stats_out);
1212             }
1213         }
1214     }
1215     ost->sync_opts++;
1216     /*
1217      * For video, number of frames in == number of packets out.
1218      * But there may be reordering, so we can't throw away frames on encoder
1219      * flush, we need to limit them here, before they go into encoder.
1220      */
1221     ost->frame_number++;
1222
1223     if (vstats_filename && frame_size)
1224         do_video_stats(ost, frame_size);
1225   }
1226
1227     if (!ost->last_frame)
1228         ost->last_frame = av_frame_alloc();
1229     av_frame_unref(ost->last_frame);
1230     if (next_picture)
1231         av_frame_ref(ost->last_frame, next_picture);
1232     else
1233         av_frame_free(&ost->last_frame);
1234 }
1235
1236 static double psnr(double d)
1237 {
1238     return -10.0 * log(d) / log(10.0);
1239 }
1240
1241 static void do_video_stats(OutputStream *ost, int frame_size)
1242 {
1243     AVCodecContext *enc;
1244     int frame_number;
1245     double ti1, bitrate, avg_bitrate;
1246
1247     /* this is executed just the first time do_video_stats is called */
1248     if (!vstats_file) {
1249         vstats_file = fopen(vstats_filename, "w");
1250         if (!vstats_file) {
1251             perror("fopen");
1252             exit_program(1);
1253         }
1254     }
1255
1256     enc = ost->enc_ctx;
1257     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1258         frame_number = ost->st->nb_frames;
1259         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame ? enc->coded_frame->quality / (float)FF_QP2LAMBDA : 0);
1260         if (enc->coded_frame && (enc->flags&CODEC_FLAG_PSNR))
1261             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
1262
1263         fprintf(vstats_file,"f_size= %6d ", frame_size);
1264         /* compute pts value */
1265         ti1 = av_stream_get_end_pts(ost->st) * av_q2d(ost->st->time_base);
1266         if (ti1 < 0.01)
1267             ti1 = 0.01;
1268
1269         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1270         avg_bitrate = (double)(ost->data_size * 8) / ti1 / 1000.0;
1271         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1272                (double)ost->data_size / 1024, ti1, bitrate, avg_bitrate);
1273         fprintf(vstats_file, "type= %c\n", enc->coded_frame ? av_get_picture_type_char(enc->coded_frame->pict_type) : 'I');
1274     }
1275 }
1276
1277 static void finish_output_stream(OutputStream *ost)
1278 {
1279     OutputFile *of = output_files[ost->file_index];
1280     int i;
1281
1282     ost->finished = ENCODER_FINISHED | MUXER_FINISHED;
1283
1284     if (of->shortest) {
1285         for (i = 0; i < of->ctx->nb_streams; i++)
1286             output_streams[of->ost_index + i]->finished = ENCODER_FINISHED | MUXER_FINISHED;
1287     }
1288 }
1289
1290 /**
1291  * Get and encode new output from any of the filtergraphs, without causing
1292  * activity.
1293  *
1294  * @return  0 for success, <0 for severe errors
1295  */
1296 static int reap_filters(int flush)
1297 {
1298     AVFrame *filtered_frame = NULL;
1299     int i;
1300
1301     /* Reap all buffers present in the buffer sinks */
1302     for (i = 0; i < nb_output_streams; i++) {
1303         OutputStream *ost = output_streams[i];
1304         OutputFile    *of = output_files[ost->file_index];
1305         AVFilterContext *filter;
1306         AVCodecContext *enc = ost->enc_ctx;
1307         int ret = 0;
1308
1309         if (!ost->filter)
1310             continue;
1311         filter = ost->filter->filter;
1312
1313         if (!ost->filtered_frame && !(ost->filtered_frame = av_frame_alloc())) {
1314             return AVERROR(ENOMEM);
1315         }
1316         filtered_frame = ost->filtered_frame;
1317
1318         while (1) {
1319             double float_pts = AV_NOPTS_VALUE; // this is identical to filtered_frame.pts but with higher precision
1320             ret = av_buffersink_get_frame_flags(filter, filtered_frame,
1321                                                AV_BUFFERSINK_FLAG_NO_REQUEST);
1322             if (ret < 0) {
1323                 if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
1324                     av_log(NULL, AV_LOG_WARNING,
1325                            "Error in av_buffersink_get_frame_flags(): %s\n", av_err2str(ret));
1326                 } else if (flush && ret == AVERROR_EOF) {
1327                     if (filter->inputs[0]->type == AVMEDIA_TYPE_VIDEO)
1328                         do_video_out(of->ctx, ost, NULL, AV_NOPTS_VALUE);
1329                 }
1330                 break;
1331             }
1332             if (ost->finished) {
1333                 av_frame_unref(filtered_frame);
1334                 continue;
1335             }
1336             if (filtered_frame->pts != AV_NOPTS_VALUE) {
1337                 int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
1338                 AVRational tb = enc->time_base;
1339                 int extra_bits = av_clip(29 - av_log2(tb.den), 0, 16);
1340
1341                 tb.den <<= extra_bits;
1342                 float_pts =
1343                     av_rescale_q(filtered_frame->pts, filter->inputs[0]->time_base, tb) -
1344                     av_rescale_q(start_time, AV_TIME_BASE_Q, tb);
1345                 float_pts /= 1 << extra_bits;
1346                 // avoid exact midoints to reduce the chance of rounding differences, this can be removed in case the fps code is changed to work with integers
1347                 float_pts += FFSIGN(float_pts) * 1.0 / (1<<17);
1348
1349                 filtered_frame->pts =
1350                     av_rescale_q(filtered_frame->pts, filter->inputs[0]->time_base, enc->time_base) -
1351                     av_rescale_q(start_time, AV_TIME_BASE_Q, enc->time_base);
1352             }
1353             //if (ost->source_index >= 0)
1354             //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
1355
1356             switch (filter->inputs[0]->type) {
1357             case AVMEDIA_TYPE_VIDEO:
1358                 if (!ost->frame_aspect_ratio.num)
1359                     enc->sample_aspect_ratio = filtered_frame->sample_aspect_ratio;
1360
1361                 if (debug_ts) {
1362                     av_log(NULL, AV_LOG_INFO, "filter -> pts:%s pts_time:%s exact:%f time_base:%d/%d\n",
1363                             av_ts2str(filtered_frame->pts), av_ts2timestr(filtered_frame->pts, &enc->time_base),
1364                             float_pts,
1365                             enc->time_base.num, enc->time_base.den);
1366                 }
1367
1368                 do_video_out(of->ctx, ost, filtered_frame, float_pts);
1369                 break;
1370             case AVMEDIA_TYPE_AUDIO:
1371                 if (!(enc->codec->capabilities & CODEC_CAP_PARAM_CHANGE) &&
1372                     enc->channels != av_frame_get_channels(filtered_frame)) {
1373                     av_log(NULL, AV_LOG_ERROR,
1374                            "Audio filter graph output is not normalized and encoder does not support parameter changes\n");
1375                     break;
1376                 }
1377                 do_audio_out(of->ctx, ost, filtered_frame);
1378                 break;
1379             default:
1380                 // TODO support subtitle filters
1381                 av_assert0(0);
1382             }
1383
1384             av_frame_unref(filtered_frame);
1385         }
1386     }
1387
1388     return 0;
1389 }
1390
1391 static void print_final_stats(int64_t total_size)
1392 {
1393     uint64_t video_size = 0, audio_size = 0, extra_size = 0, other_size = 0;
1394     uint64_t subtitle_size = 0;
1395     uint64_t data_size = 0;
1396     float percent = -1.0;
1397     int i, j;
1398     int pass1_used = 1;
1399
1400     for (i = 0; i < nb_output_streams; i++) {
1401         OutputStream *ost = output_streams[i];
1402         switch (ost->enc_ctx->codec_type) {
1403             case AVMEDIA_TYPE_VIDEO: video_size += ost->data_size; break;
1404             case AVMEDIA_TYPE_AUDIO: audio_size += ost->data_size; break;
1405             case AVMEDIA_TYPE_SUBTITLE: subtitle_size += ost->data_size; break;
1406             default:                 other_size += ost->data_size; break;
1407         }
1408         extra_size += ost->enc_ctx->extradata_size;
1409         data_size  += ost->data_size;
1410         if (   (ost->enc_ctx->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))
1411             != CODEC_FLAG_PASS1)
1412             pass1_used = 0;
1413     }
1414
1415     if (data_size && total_size>0 && total_size >= data_size)
1416         percent = 100.0 * (total_size - data_size) / data_size;
1417
1418     av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB subtitle:%1.0fkB other streams:%1.0fkB global headers:%1.0fkB muxing overhead: ",
1419            video_size / 1024.0,
1420            audio_size / 1024.0,
1421            subtitle_size / 1024.0,
1422            other_size / 1024.0,
1423            extra_size / 1024.0);
1424     if (percent >= 0.0)
1425         av_log(NULL, AV_LOG_INFO, "%f%%", percent);
1426     else
1427         av_log(NULL, AV_LOG_INFO, "unknown");
1428     av_log(NULL, AV_LOG_INFO, "\n");
1429
1430     /* print verbose per-stream stats */
1431     for (i = 0; i < nb_input_files; i++) {
1432         InputFile *f = input_files[i];
1433         uint64_t total_packets = 0, total_size = 0;
1434
1435         av_log(NULL, AV_LOG_VERBOSE, "Input file #%d (%s):\n",
1436                i, f->ctx->filename);
1437
1438         for (j = 0; j < f->nb_streams; j++) {
1439             InputStream *ist = input_streams[f->ist_index + j];
1440             enum AVMediaType type = ist->dec_ctx->codec_type;
1441
1442             total_size    += ist->data_size;
1443             total_packets += ist->nb_packets;
1444
1445             av_log(NULL, AV_LOG_VERBOSE, "  Input stream #%d:%d (%s): ",
1446                    i, j, media_type_string(type));
1447             av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" packets read (%"PRIu64" bytes); ",
1448                    ist->nb_packets, ist->data_size);
1449
1450             if (ist->decoding_needed) {
1451                 av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" frames decoded",
1452                        ist->frames_decoded);
1453                 if (type == AVMEDIA_TYPE_AUDIO)
1454                     av_log(NULL, AV_LOG_VERBOSE, " (%"PRIu64" samples)", ist->samples_decoded);
1455                 av_log(NULL, AV_LOG_VERBOSE, "; ");
1456             }
1457
1458             av_log(NULL, AV_LOG_VERBOSE, "\n");
1459         }
1460
1461         av_log(NULL, AV_LOG_VERBOSE, "  Total: %"PRIu64" packets (%"PRIu64" bytes) demuxed\n",
1462                total_packets, total_size);
1463     }
1464
1465     for (i = 0; i < nb_output_files; i++) {
1466         OutputFile *of = output_files[i];
1467         uint64_t total_packets = 0, total_size = 0;
1468
1469         av_log(NULL, AV_LOG_VERBOSE, "Output file #%d (%s):\n",
1470                i, of->ctx->filename);
1471
1472         for (j = 0; j < of->ctx->nb_streams; j++) {
1473             OutputStream *ost = output_streams[of->ost_index + j];
1474             enum AVMediaType type = ost->enc_ctx->codec_type;
1475
1476             total_size    += ost->data_size;
1477             total_packets += ost->packets_written;
1478
1479             av_log(NULL, AV_LOG_VERBOSE, "  Output stream #%d:%d (%s): ",
1480                    i, j, media_type_string(type));
1481             if (ost->encoding_needed) {
1482                 av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" frames encoded",
1483                        ost->frames_encoded);
1484                 if (type == AVMEDIA_TYPE_AUDIO)
1485                     av_log(NULL, AV_LOG_VERBOSE, " (%"PRIu64" samples)", ost->samples_encoded);
1486                 av_log(NULL, AV_LOG_VERBOSE, "; ");
1487             }
1488
1489             av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" packets muxed (%"PRIu64" bytes); ",
1490                    ost->packets_written, ost->data_size);
1491
1492             av_log(NULL, AV_LOG_VERBOSE, "\n");
1493         }
1494
1495         av_log(NULL, AV_LOG_VERBOSE, "  Total: %"PRIu64" packets (%"PRIu64" bytes) muxed\n",
1496                total_packets, total_size);
1497     }
1498     if(video_size + data_size + audio_size + subtitle_size + extra_size == 0){
1499         av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded ");
1500         if (pass1_used) {
1501             av_log(NULL, AV_LOG_WARNING, "\n");
1502         } else {
1503             av_log(NULL, AV_LOG_WARNING, "(check -ss / -t / -frames parameters if used)\n");
1504         }
1505     }
1506 }
1507
1508 static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
1509 {
1510     char buf[1024];
1511     AVBPrint buf_script;
1512     OutputStream *ost;
1513     AVFormatContext *oc;
1514     int64_t total_size;
1515     AVCodecContext *enc;
1516     int frame_number, vid, i;
1517     double bitrate;
1518     int64_t pts = INT64_MIN;
1519     static int64_t last_time = -1;
1520     static int qp_histogram[52];
1521     int hours, mins, secs, us;
1522
1523     if (!print_stats && !is_last_report && !progress_avio)
1524         return;
1525
1526     if (!is_last_report) {
1527         if (last_time == -1) {
1528             last_time = cur_time;
1529             return;
1530         }
1531         if ((cur_time - last_time) < 500000)
1532             return;
1533         last_time = cur_time;
1534     }
1535
1536
1537     oc = output_files[0]->ctx;
1538
1539     total_size = avio_size(oc->pb);
1540     if (total_size <= 0) // FIXME improve avio_size() so it works with non seekable output too
1541         total_size = avio_tell(oc->pb);
1542
1543     buf[0] = '\0';
1544     vid = 0;
1545     av_bprint_init(&buf_script, 0, 1);
1546     for (i = 0; i < nb_output_streams; i++) {
1547         float q = -1;
1548         ost = output_streams[i];
1549         enc = ost->enc_ctx;
1550         if (!ost->stream_copy && enc->coded_frame)
1551             q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
1552         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1553             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1554             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1555                        ost->file_index, ost->index, q);
1556         }
1557         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1558             float fps, t = (cur_time-timer_start) / 1000000.0;
1559
1560             frame_number = ost->frame_number;
1561             fps = t > 1 ? frame_number / t : 0;
1562             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
1563                      frame_number, fps < 9.95, fps, q);
1564             av_bprintf(&buf_script, "frame=%d\n", frame_number);
1565             av_bprintf(&buf_script, "fps=%.1f\n", fps);
1566             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1567                        ost->file_index, ost->index, q);
1568             if (is_last_report)
1569                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1570             if (qp_hist) {
1571                 int j;
1572                 int qp = lrintf(q);
1573                 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
1574                     qp_histogram[qp]++;
1575                 for (j = 0; j < 32; j++)
1576                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log2(qp_histogram[j] + 1)));
1577             }
1578             if ((enc->flags&CODEC_FLAG_PSNR) && (enc->coded_frame || is_last_report)) {
1579                 int j;
1580                 double error, error_sum = 0;
1581                 double scale, scale_sum = 0;
1582                 double p;
1583                 char type[3] = { 'Y','U','V' };
1584                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1585                 for (j = 0; j < 3; j++) {
1586                     if (is_last_report) {
1587                         error = enc->error[j];
1588                         scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
1589                     } else {
1590                         error = enc->coded_frame->error[j];
1591                         scale = enc->width * enc->height * 255.0 * 255.0;
1592                     }
1593                     if (j)
1594                         scale /= 4;
1595                     error_sum += error;
1596                     scale_sum += scale;
1597                     p = psnr(error / scale);
1598                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], p);
1599                     av_bprintf(&buf_script, "stream_%d_%d_psnr_%c=%2.2f\n",
1600                                ost->file_index, ost->index, type[j] | 32, p);
1601                 }
1602                 p = psnr(error_sum / scale_sum);
1603                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
1604                 av_bprintf(&buf_script, "stream_%d_%d_psnr_all=%2.2f\n",
1605                            ost->file_index, ost->index, p);
1606             }
1607             vid = 1;
1608         }
1609         /* compute min output value */
1610         if (av_stream_get_end_pts(ost->st) != AV_NOPTS_VALUE)
1611             pts = FFMAX(pts, av_rescale_q(av_stream_get_end_pts(ost->st),
1612                                           ost->st->time_base, AV_TIME_BASE_Q));
1613         if (is_last_report)
1614             nb_frames_drop += ost->last_droped;
1615     }
1616
1617     secs = FFABS(pts) / AV_TIME_BASE;
1618     us = FFABS(pts) % AV_TIME_BASE;
1619     mins = secs / 60;
1620     secs %= 60;
1621     hours = mins / 60;
1622     mins %= 60;
1623
1624     bitrate = pts && total_size >= 0 ? total_size * 8 / (pts / 1000.0) : -1;
1625
1626     if (total_size < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1627                                  "size=N/A time=");
1628     else                snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1629                                  "size=%8.0fkB time=", total_size / 1024.0);
1630     if (pts < 0)
1631         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "-");
1632     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1633              "%02d:%02d:%02d.%02d ", hours, mins, secs,
1634              (100 * us) / AV_TIME_BASE);
1635
1636     if (bitrate < 0) {
1637         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),"bitrate=N/A");
1638         av_bprintf(&buf_script, "bitrate=N/A\n");
1639     }else{
1640         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),"bitrate=%6.1fkbits/s", bitrate);
1641         av_bprintf(&buf_script, "bitrate=%6.1fkbits/s\n", bitrate);
1642     }
1643
1644     if (total_size < 0) av_bprintf(&buf_script, "total_size=N/A\n");
1645     else                av_bprintf(&buf_script, "total_size=%"PRId64"\n", total_size);
1646     av_bprintf(&buf_script, "out_time_ms=%"PRId64"\n", pts);
1647     av_bprintf(&buf_script, "out_time=%02d:%02d:%02d.%06d\n",
1648                hours, mins, secs, us);
1649
1650     if (nb_frames_dup || nb_frames_drop)
1651         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1652                 nb_frames_dup, nb_frames_drop);
1653     av_bprintf(&buf_script, "dup_frames=%d\n", nb_frames_dup);
1654     av_bprintf(&buf_script, "drop_frames=%d\n", nb_frames_drop);
1655
1656     if (print_stats || is_last_report) {
1657         const char end = is_last_report ? '\n' : '\r';
1658         if (print_stats==1 && AV_LOG_INFO > av_log_get_level()) {
1659             fprintf(stderr, "%s    %c", buf, end);
1660         } else
1661             av_log(NULL, AV_LOG_INFO, "%s    %c", buf, end);
1662
1663     fflush(stderr);
1664     }
1665
1666     if (progress_avio) {
1667         av_bprintf(&buf_script, "progress=%s\n",
1668                    is_last_report ? "end" : "continue");
1669         avio_write(progress_avio, buf_script.str,
1670                    FFMIN(buf_script.len, buf_script.size - 1));
1671         avio_flush(progress_avio);
1672         av_bprint_finalize(&buf_script, NULL);
1673         if (is_last_report) {
1674             avio_closep(&progress_avio);
1675         }
1676     }
1677
1678     if (is_last_report)
1679         print_final_stats(total_size);
1680 }
1681
1682 static void flush_encoders(void)
1683 {
1684     int i, ret;
1685
1686     for (i = 0; i < nb_output_streams; i++) {
1687         OutputStream   *ost = output_streams[i];
1688         AVCodecContext *enc = ost->enc_ctx;
1689         AVFormatContext *os = output_files[ost->file_index]->ctx;
1690         int stop_encoding = 0;
1691
1692         if (!ost->encoding_needed)
1693             continue;
1694
1695         if (enc->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
1696             continue;
1697         if (enc->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == AV_CODEC_ID_RAWVIDEO)
1698             continue;
1699
1700         for (;;) {
1701             int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
1702             const char *desc;
1703
1704             switch (enc->codec_type) {
1705             case AVMEDIA_TYPE_AUDIO:
1706                 encode = avcodec_encode_audio2;
1707                 desc   = "Audio";
1708                 break;
1709             case AVMEDIA_TYPE_VIDEO:
1710                 encode = avcodec_encode_video2;
1711                 desc   = "Video";
1712                 break;
1713             default:
1714                 stop_encoding = 1;
1715             }
1716
1717             if (encode) {
1718                 AVPacket pkt;
1719                 int pkt_size;
1720                 int got_packet;
1721                 av_init_packet(&pkt);
1722                 pkt.data = NULL;
1723                 pkt.size = 0;
1724
1725                 update_benchmark(NULL);
1726                 ret = encode(enc, &pkt, NULL, &got_packet);
1727                 update_benchmark("flush %s %d.%d", desc, ost->file_index, ost->index);
1728                 if (ret < 0) {
1729                     av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
1730                     exit_program(1);
1731                 }
1732                 if (ost->logfile && enc->stats_out) {
1733                     fprintf(ost->logfile, "%s", enc->stats_out);
1734                 }
1735                 if (!got_packet) {
1736                     stop_encoding = 1;
1737                     break;
1738                 }
1739                 if (ost->finished & MUXER_FINISHED) {
1740                     av_free_packet(&pkt);
1741                     continue;
1742                 }
1743                 av_packet_rescale_ts(&pkt, enc->time_base, ost->st->time_base);
1744                 pkt_size = pkt.size;
1745                 write_frame(os, &pkt, ost);
1746                 if (ost->enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO && vstats_filename) {
1747                     do_video_stats(ost, pkt_size);
1748                 }
1749             }
1750
1751             if (stop_encoding)
1752                 break;
1753         }
1754     }
1755 }
1756
1757 /*
1758  * Check whether a packet from ist should be written into ost at this time
1759  */
1760 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1761 {
1762     OutputFile *of = output_files[ost->file_index];
1763     int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
1764
1765     if (ost->source_index != ist_index)
1766         return 0;
1767
1768     if (ost->finished)
1769         return 0;
1770
1771     if (of->start_time != AV_NOPTS_VALUE && ist->pts < of->start_time)
1772         return 0;
1773
1774     return 1;
1775 }
1776
1777 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1778 {
1779     OutputFile *of = output_files[ost->file_index];
1780     InputFile   *f = input_files [ist->file_index];
1781     int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
1782     int64_t ost_tb_start_time = av_rescale_q(start_time, AV_TIME_BASE_Q, ost->st->time_base);
1783     int64_t ist_tb_start_time = av_rescale_q(start_time, AV_TIME_BASE_Q, ist->st->time_base);
1784     AVPicture pict;
1785     AVPacket opkt;
1786
1787     av_init_packet(&opkt);
1788
1789     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1790         !ost->copy_initial_nonkeyframes)
1791         return;
1792
1793     if (pkt->pts == AV_NOPTS_VALUE) {
1794         if (!ost->frame_number && ist->pts < start_time &&
1795             !ost->copy_prior_start)
1796             return;
1797     } else {
1798         if (!ost->frame_number && pkt->pts < ist_tb_start_time &&
1799             !ost->copy_prior_start)
1800             return;
1801     }
1802
1803     if (of->recording_time != INT64_MAX &&
1804         ist->pts >= of->recording_time + start_time) {
1805         close_output_stream(ost);
1806         return;
1807     }
1808
1809     if (f->recording_time != INT64_MAX) {
1810         start_time = f->ctx->start_time;
1811         if (f->start_time != AV_NOPTS_VALUE)
1812             start_time += f->start_time;
1813         if (ist->pts >= f->recording_time + start_time) {
1814             close_output_stream(ost);
1815             return;
1816         }
1817     }
1818
1819     /* force the input stream PTS */
1820     if (ost->enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO)
1821         ost->sync_opts++;
1822
1823     if (pkt->pts != AV_NOPTS_VALUE)
1824         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1825     else
1826         opkt.pts = AV_NOPTS_VALUE;
1827
1828     if (pkt->dts == AV_NOPTS_VALUE)
1829         opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
1830     else
1831         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1832     opkt.dts -= ost_tb_start_time;
1833
1834     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && pkt->dts != AV_NOPTS_VALUE) {
1835         int duration = av_get_audio_frame_duration(ist->dec_ctx, pkt->size);
1836         if(!duration)
1837             duration = ist->dec_ctx->frame_size;
1838         opkt.dts = opkt.pts = av_rescale_delta(ist->st->time_base, pkt->dts,
1839                                                (AVRational){1, ist->dec_ctx->sample_rate}, duration, &ist->filter_in_rescale_delta_last,
1840                                                ost->st->time_base) - ost_tb_start_time;
1841     }
1842
1843     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1844     opkt.flags    = pkt->flags;
1845
1846     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1847     if (  ost->enc_ctx->codec_id != AV_CODEC_ID_H264
1848        && ost->enc_ctx->codec_id != AV_CODEC_ID_MPEG1VIDEO
1849        && ost->enc_ctx->codec_id != AV_CODEC_ID_MPEG2VIDEO
1850        && ost->enc_ctx->codec_id != AV_CODEC_ID_VC1
1851        ) {
1852         if (av_parser_change(ost->parser, ost->st->codec,
1853                              &opkt.data, &opkt.size,
1854                              pkt->data, pkt->size,
1855                              pkt->flags & AV_PKT_FLAG_KEY)) {
1856             opkt.buf = av_buffer_create(opkt.data, opkt.size, av_buffer_default_free, NULL, 0);
1857             if (!opkt.buf)
1858                 exit_program(1);
1859         }
1860     } else {
1861         opkt.data = pkt->data;
1862         opkt.size = pkt->size;
1863     }
1864     av_copy_packet_side_data(&opkt, pkt);
1865
1866     if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (of->ctx->oformat->flags & AVFMT_RAWPICTURE)) {
1867         /* store AVPicture in AVPacket, as expected by the output format */
1868         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1869         opkt.data = (uint8_t *)&pict;
1870         opkt.size = sizeof(AVPicture);
1871         opkt.flags |= AV_PKT_FLAG_KEY;
1872     }
1873
1874     write_frame(of->ctx, &opkt, ost);
1875 }
1876
1877 int guess_input_channel_layout(InputStream *ist)
1878 {
1879     AVCodecContext *dec = ist->dec_ctx;
1880
1881     if (!dec->channel_layout) {
1882         char layout_name[256];
1883
1884         if (dec->channels > ist->guess_layout_max)
1885             return 0;
1886         dec->channel_layout = av_get_default_channel_layout(dec->channels);
1887         if (!dec->channel_layout)
1888             return 0;
1889         av_get_channel_layout_string(layout_name, sizeof(layout_name),
1890                                      dec->channels, dec->channel_layout);
1891         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for  Input Stream "
1892                "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
1893     }
1894     return 1;
1895 }
1896
1897 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1898 {
1899     AVFrame *decoded_frame, *f;
1900     AVCodecContext *avctx = ist->dec_ctx;
1901     int i, ret, err = 0, resample_changed;
1902     AVRational decoded_frame_tb;
1903
1904     if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
1905         return AVERROR(ENOMEM);
1906     if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1907         return AVERROR(ENOMEM);
1908     decoded_frame = ist->decoded_frame;
1909
1910     update_benchmark(NULL);
1911     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1912     update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
1913
1914     if (ret >= 0 && avctx->sample_rate <= 0) {
1915         av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
1916         ret = AVERROR_INVALIDDATA;
1917     }
1918
1919     if (*got_output || ret<0)
1920         decode_error_stat[ret<0] ++;
1921
1922     if (ret < 0 && exit_on_error)
1923         exit_program(1);
1924
1925     if (!*got_output || ret < 0)
1926         return ret;
1927
1928     ist->samples_decoded += decoded_frame->nb_samples;
1929     ist->frames_decoded++;
1930
1931 #if 1
1932     /* increment next_dts to use for the case where the input stream does not
1933        have timestamps or there are multiple frames in the packet */
1934     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1935                      avctx->sample_rate;
1936     ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1937                      avctx->sample_rate;
1938 #endif
1939
1940     resample_changed = ist->resample_sample_fmt     != decoded_frame->format         ||
1941                        ist->resample_channels       != avctx->channels               ||
1942                        ist->resample_channel_layout != decoded_frame->channel_layout ||
1943                        ist->resample_sample_rate    != decoded_frame->sample_rate;
1944     if (resample_changed) {
1945         char layout1[64], layout2[64];
1946
1947         if (!guess_input_channel_layout(ist)) {
1948             av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
1949                    "layout for Input Stream #%d.%d\n", ist->file_index,
1950                    ist->st->index);
1951             exit_program(1);
1952         }
1953         decoded_frame->channel_layout = avctx->channel_layout;
1954
1955         av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
1956                                      ist->resample_channel_layout);
1957         av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
1958                                      decoded_frame->channel_layout);
1959
1960         av_log(NULL, AV_LOG_INFO,
1961                "Input stream #%d:%d frame changed from rate:%d fmt:%s ch:%d chl:%s to rate:%d fmt:%s ch:%d chl:%s\n",
1962                ist->file_index, ist->st->index,
1963                ist->resample_sample_rate,  av_get_sample_fmt_name(ist->resample_sample_fmt),
1964                ist->resample_channels, layout1,
1965                decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
1966                avctx->channels, layout2);
1967
1968         ist->resample_sample_fmt     = decoded_frame->format;
1969         ist->resample_sample_rate    = decoded_frame->sample_rate;
1970         ist->resample_channel_layout = decoded_frame->channel_layout;
1971         ist->resample_channels       = avctx->channels;
1972
1973         for (i = 0; i < nb_filtergraphs; i++)
1974             if (ist_in_filtergraph(filtergraphs[i], ist)) {
1975                 FilterGraph *fg = filtergraphs[i];
1976                 if (configure_filtergraph(fg) < 0) {
1977                     av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1978                     exit_program(1);
1979                 }
1980             }
1981     }
1982
1983     /* if the decoder provides a pts, use it instead of the last packet pts.
1984        the decoder could be delaying output by a packet or more. */
1985     if (decoded_frame->pts != AV_NOPTS_VALUE) {
1986         ist->dts = ist->next_dts = ist->pts = ist->next_pts = av_rescale_q(decoded_frame->pts, avctx->time_base, AV_TIME_BASE_Q);
1987         decoded_frame_tb   = avctx->time_base;
1988     } else if (decoded_frame->pkt_pts != AV_NOPTS_VALUE) {
1989         decoded_frame->pts = decoded_frame->pkt_pts;
1990         decoded_frame_tb   = ist->st->time_base;
1991     } else if (pkt->pts != AV_NOPTS_VALUE) {
1992         decoded_frame->pts = pkt->pts;
1993         decoded_frame_tb   = ist->st->time_base;
1994     }else {
1995         decoded_frame->pts = ist->dts;
1996         decoded_frame_tb   = AV_TIME_BASE_Q;
1997     }
1998     pkt->pts           = AV_NOPTS_VALUE;
1999     if (decoded_frame->pts != AV_NOPTS_VALUE)
2000         decoded_frame->pts = av_rescale_delta(decoded_frame_tb, decoded_frame->pts,
2001                                               (AVRational){1, avctx->sample_rate}, decoded_frame->nb_samples, &ist->filter_in_rescale_delta_last,
2002                                               (AVRational){1, avctx->sample_rate});
2003     for (i = 0; i < ist->nb_filters; i++) {
2004         if (i < ist->nb_filters - 1) {
2005             f = ist->filter_frame;
2006             err = av_frame_ref(f, decoded_frame);
2007             if (err < 0)
2008                 break;
2009         } else
2010             f = decoded_frame;
2011         err = av_buffersrc_add_frame_flags(ist->filters[i]->filter, f,
2012                                      AV_BUFFERSRC_FLAG_PUSH);
2013         if (err == AVERROR_EOF)
2014             err = 0; /* ignore */
2015         if (err < 0)
2016             break;
2017     }
2018     decoded_frame->pts = AV_NOPTS_VALUE;
2019
2020     av_frame_unref(ist->filter_frame);
2021     av_frame_unref(decoded_frame);
2022     return err < 0 ? err : ret;
2023 }
2024
2025 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
2026 {
2027     AVFrame *decoded_frame, *f;
2028     int i, ret = 0, err = 0, resample_changed;
2029     int64_t best_effort_timestamp;
2030     AVRational *frame_sample_aspect;
2031
2032     if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
2033         return AVERROR(ENOMEM);
2034     if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
2035         return AVERROR(ENOMEM);
2036     decoded_frame = ist->decoded_frame;
2037     pkt->dts  = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
2038
2039     update_benchmark(NULL);
2040     ret = avcodec_decode_video2(ist->dec_ctx,
2041                                 decoded_frame, got_output, pkt);
2042     update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
2043
2044     // The following line may be required in some cases where there is no parser
2045     // or the parser does not has_b_frames correctly
2046     if (ist->st->codec->has_b_frames < ist->dec_ctx->has_b_frames) {
2047         if (ist->dec_ctx->codec_id == AV_CODEC_ID_H264) {
2048             ist->st->codec->has_b_frames = ist->dec_ctx->has_b_frames;
2049         } else
2050             av_log_ask_for_sample(
2051                 ist->dec_ctx,
2052                 "has_b_frames is larger in decoder than demuxer %d > %d ",
2053                 ist->dec_ctx->has_b_frames,
2054                 ist->st->codec->has_b_frames
2055             );
2056     }
2057
2058     if (*got_output || ret<0)
2059         decode_error_stat[ret<0] ++;
2060
2061     if (ret < 0 && exit_on_error)
2062         exit_program(1);
2063
2064     if (*got_output && ret >= 0) {
2065         if (ist->dec_ctx->width  != decoded_frame->width ||
2066             ist->dec_ctx->height != decoded_frame->height ||
2067             ist->dec_ctx->pix_fmt != decoded_frame->format) {
2068             av_log(NULL, AV_LOG_DEBUG, "Frame parameters mismatch context %d,%d,%d != %d,%d,%d\n",
2069                 decoded_frame->width,
2070                 decoded_frame->height,
2071                 decoded_frame->format,
2072                 ist->dec_ctx->width,
2073                 ist->dec_ctx->height,
2074                 ist->dec_ctx->pix_fmt);
2075         }
2076     }
2077
2078     if (!*got_output || ret < 0)
2079         return ret;
2080
2081     if(ist->top_field_first>=0)
2082         decoded_frame->top_field_first = ist->top_field_first;
2083
2084     ist->frames_decoded++;
2085
2086     if (ist->hwaccel_retrieve_data && decoded_frame->format == ist->hwaccel_pix_fmt) {
2087         err = ist->hwaccel_retrieve_data(ist->dec_ctx, decoded_frame);
2088         if (err < 0)
2089             goto fail;
2090     }
2091     ist->hwaccel_retrieved_pix_fmt = decoded_frame->format;
2092
2093     best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
2094     if(best_effort_timestamp != AV_NOPTS_VALUE)
2095         ist->next_pts = ist->pts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);
2096
2097     if (debug_ts) {
2098         av_log(NULL, AV_LOG_INFO, "decoder -> ist_index:%d type:video "
2099                "frame_pts:%s frame_pts_time:%s best_effort_ts:%"PRId64" best_effort_ts_time:%s keyframe:%d frame_type:%d time_base:%d/%d\n",
2100                ist->st->index, av_ts2str(decoded_frame->pts),
2101                av_ts2timestr(decoded_frame->pts, &ist->st->time_base),
2102                best_effort_timestamp,
2103                av_ts2timestr(best_effort_timestamp, &ist->st->time_base),
2104                decoded_frame->key_frame, decoded_frame->pict_type,
2105                ist->st->time_base.num, ist->st->time_base.den);
2106     }
2107
2108     pkt->size = 0;
2109
2110     if (ist->st->sample_aspect_ratio.num)
2111         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
2112
2113     resample_changed = ist->resample_width   != decoded_frame->width  ||
2114                        ist->resample_height  != decoded_frame->height ||
2115                        ist->resample_pix_fmt != decoded_frame->format;
2116     if (resample_changed) {
2117         av_log(NULL, AV_LOG_INFO,
2118                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
2119                ist->file_index, ist->st->index,
2120                ist->resample_width,  ist->resample_height,  av_get_pix_fmt_name(ist->resample_pix_fmt),
2121                decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
2122
2123         ist->resample_width   = decoded_frame->width;
2124         ist->resample_height  = decoded_frame->height;
2125         ist->resample_pix_fmt = decoded_frame->format;
2126
2127         for (i = 0; i < nb_filtergraphs; i++) {
2128             if (ist_in_filtergraph(filtergraphs[i], ist) && ist->reinit_filters &&
2129                 configure_filtergraph(filtergraphs[i]) < 0) {
2130                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
2131                 exit_program(1);
2132             }
2133         }
2134     }
2135
2136     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
2137     for (i = 0; i < ist->nb_filters; i++) {
2138         if (!frame_sample_aspect->num)
2139             *frame_sample_aspect = ist->st->sample_aspect_ratio;
2140
2141         if (i < ist->nb_filters - 1) {
2142             f = ist->filter_frame;
2143             err = av_frame_ref(f, decoded_frame);
2144             if (err < 0)
2145                 break;
2146         } else
2147             f = decoded_frame;
2148         ret = av_buffersrc_add_frame_flags(ist->filters[i]->filter, f, AV_BUFFERSRC_FLAG_PUSH);
2149         if (ret == AVERROR_EOF) {
2150             ret = 0; /* ignore */
2151         } else if (ret < 0) {
2152             av_log(NULL, AV_LOG_FATAL,
2153                    "Failed to inject frame into filter network: %s\n", av_err2str(ret));
2154             exit_program(1);
2155         }
2156     }
2157
2158 fail:
2159     av_frame_unref(ist->filter_frame);
2160     av_frame_unref(decoded_frame);
2161     return err < 0 ? err : ret;
2162 }
2163
2164 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
2165 {
2166     AVSubtitle subtitle;
2167     int i, ret = avcodec_decode_subtitle2(ist->dec_ctx,
2168                                           &subtitle, got_output, pkt);
2169
2170     if (*got_output || ret<0)
2171         decode_error_stat[ret<0] ++;
2172
2173     if (ret < 0 && exit_on_error)
2174         exit_program(1);
2175
2176     if (ret < 0 || !*got_output) {
2177         if (!pkt->size)
2178             sub2video_flush(ist);
2179         return ret;
2180     }
2181
2182     if (ist->fix_sub_duration) {
2183         int end = 1;
2184         if (ist->prev_sub.got_output) {
2185             end = av_rescale(subtitle.pts - ist->prev_sub.subtitle.pts,
2186                              1000, AV_TIME_BASE);
2187             if (end < ist->prev_sub.subtitle.end_display_time) {
2188                 av_log(ist->dec_ctx, AV_LOG_DEBUG,
2189                        "Subtitle duration reduced from %d to %d%s\n",
2190                        ist->prev_sub.subtitle.end_display_time, end,
2191                        end <= 0 ? ", dropping it" : "");
2192                 ist->prev_sub.subtitle.end_display_time = end;
2193             }
2194         }
2195         FFSWAP(int,        *got_output, ist->prev_sub.got_output);
2196         FFSWAP(int,        ret,         ist->prev_sub.ret);
2197         FFSWAP(AVSubtitle, subtitle,    ist->prev_sub.subtitle);
2198         if (end <= 0)
2199             goto out;
2200     }
2201
2202     if (!*got_output)
2203         return ret;
2204
2205     sub2video_update(ist, &subtitle);
2206
2207     if (!subtitle.num_rects)
2208         goto out;
2209
2210     ist->frames_decoded++;
2211
2212     for (i = 0; i < nb_output_streams; i++) {
2213         OutputStream *ost = output_streams[i];
2214
2215         if (!check_output_constraints(ist, ost) || !ost->encoding_needed
2216             || ost->enc->type != AVMEDIA_TYPE_SUBTITLE)
2217             continue;
2218
2219         do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle);
2220     }
2221
2222 out:
2223     avsubtitle_free(&subtitle);
2224     return ret;
2225 }
2226
2227 static int send_filter_eof(InputStream *ist)
2228 {
2229     int i, ret;
2230     for (i = 0; i < ist->nb_filters; i++) {
2231 #if 1
2232         ret = av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
2233 #else
2234         ret = av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
2235 #endif
2236         if (ret < 0)
2237             return ret;
2238     }
2239     return 0;
2240 }
2241
2242 /* pkt = NULL means EOF (needed to flush decoder buffers) */
2243 static int process_input_packet(InputStream *ist, const AVPacket *pkt)
2244 {
2245     int ret = 0, i;
2246     int got_output = 0;
2247
2248     AVPacket avpkt;
2249     if (!ist->saw_first_ts) {
2250         ist->dts = ist->st->avg_frame_rate.num ? - ist->dec_ctx->has_b_frames * AV_TIME_BASE / av_q2d(ist->st->avg_frame_rate) : 0;
2251         ist->pts = 0;
2252         if (pkt && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
2253             ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
2254             ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
2255         }
2256         ist->saw_first_ts = 1;
2257     }
2258
2259     if (ist->next_dts == AV_NOPTS_VALUE)
2260         ist->next_dts = ist->dts;
2261     if (ist->next_pts == AV_NOPTS_VALUE)
2262         ist->next_pts = ist->pts;
2263
2264     if (!pkt) {
2265         /* EOF handling */
2266         av_init_packet(&avpkt);
2267         avpkt.data = NULL;
2268         avpkt.size = 0;
2269         goto handle_eof;
2270     } else {
2271         avpkt = *pkt;
2272     }
2273
2274     if (pkt->dts != AV_NOPTS_VALUE) {
2275         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2276         if (ist->dec_ctx->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
2277             ist->next_pts = ist->pts = ist->dts;
2278     }
2279
2280     // while we have more to decode or while the decoder did output something on EOF
2281     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
2282         int duration;
2283     handle_eof:
2284
2285         ist->pts = ist->next_pts;
2286         ist->dts = ist->next_dts;
2287
2288         if (avpkt.size && avpkt.size != pkt->size &&
2289             !(ist->dec->capabilities & CODEC_CAP_SUBFRAMES)) {
2290             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
2291                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
2292             ist->showed_multi_packet_warning = 1;
2293         }
2294
2295         switch (ist->dec_ctx->codec_type) {
2296         case AVMEDIA_TYPE_AUDIO:
2297             ret = decode_audio    (ist, &avpkt, &got_output);
2298             break;
2299         case AVMEDIA_TYPE_VIDEO:
2300             ret = decode_video    (ist, &avpkt, &got_output);
2301             if (avpkt.duration) {
2302                 duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
2303             } else if(ist->dec_ctx->framerate.num != 0 && ist->dec_ctx->framerate.den != 0) {
2304                 int ticks= av_stream_get_parser(ist->st) ? av_stream_get_parser(ist->st)->repeat_pict+1 : ist->dec_ctx->ticks_per_frame;
2305                 duration = ((int64_t)AV_TIME_BASE *
2306                                 ist->dec_ctx->framerate.den * ticks) /
2307                                 ist->dec_ctx->framerate.num / ist->dec_ctx->ticks_per_frame;
2308             } else
2309                 duration = 0;
2310
2311             if(ist->dts != AV_NOPTS_VALUE && duration) {
2312                 ist->next_dts += duration;
2313             }else
2314                 ist->next_dts = AV_NOPTS_VALUE;
2315
2316             if (got_output)
2317                 ist->next_pts += duration; //FIXME the duration is not correct in some cases
2318             break;
2319         case AVMEDIA_TYPE_SUBTITLE:
2320             ret = transcode_subtitles(ist, &avpkt, &got_output);
2321             break;
2322         default:
2323             return -1;
2324         }
2325
2326         if (ret < 0) {
2327             av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d: %s\n",
2328                    ist->file_index, ist->st->index, av_err2str(ret));
2329             if (exit_on_error)
2330                 exit_program(1);
2331             break;
2332         }
2333
2334         avpkt.dts=
2335         avpkt.pts= AV_NOPTS_VALUE;
2336
2337         // touch data and size only if not EOF
2338         if (pkt) {
2339             if(ist->dec_ctx->codec_type != AVMEDIA_TYPE_AUDIO)
2340                 ret = avpkt.size;
2341             avpkt.data += ret;
2342             avpkt.size -= ret;
2343         }
2344         if (!got_output) {
2345             continue;
2346         }
2347         if (got_output && !pkt)
2348             break;
2349     }
2350
2351     /* after flushing, send an EOF on all the filter inputs attached to the stream */
2352     if (!pkt && ist->decoding_needed && !got_output) {
2353         int ret = send_filter_eof(ist);
2354         if (ret < 0) {
2355             av_log(NULL, AV_LOG_FATAL, "Error marking filters as finished\n");
2356             exit_program(1);
2357         }
2358     }
2359
2360     /* handle stream copy */
2361     if (!ist->decoding_needed) {
2362         ist->dts = ist->next_dts;
2363         switch (ist->dec_ctx->codec_type) {
2364         case AVMEDIA_TYPE_AUDIO:
2365             ist->next_dts += ((int64_t)AV_TIME_BASE * ist->dec_ctx->frame_size) /
2366                              ist->dec_ctx->sample_rate;
2367             break;
2368         case AVMEDIA_TYPE_VIDEO:
2369             if (ist->framerate.num) {
2370                 // TODO: Remove work-around for c99-to-c89 issue 7
2371                 AVRational time_base_q = AV_TIME_BASE_Q;
2372                 int64_t next_dts = av_rescale_q(ist->next_dts, time_base_q, av_inv_q(ist->framerate));
2373                 ist->next_dts = av_rescale_q(next_dts + 1, av_inv_q(ist->framerate), time_base_q);
2374             } else if (pkt->duration) {
2375                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
2376             } else if(ist->dec_ctx->framerate.num != 0) {
2377                 int ticks= av_stream_get_parser(ist->st) ? av_stream_get_parser(ist->st)->repeat_pict + 1 : ist->dec_ctx->ticks_per_frame;
2378                 ist->next_dts += ((int64_t)AV_TIME_BASE *
2379                                   ist->dec_ctx->framerate.den * ticks) /
2380                                   ist->dec_ctx->framerate.num / ist->dec_ctx->ticks_per_frame;
2381             }
2382             break;
2383         }
2384         ist->pts = ist->dts;
2385         ist->next_pts = ist->next_dts;
2386     }
2387     for (i = 0; pkt && i < nb_output_streams; i++) {
2388         OutputStream *ost = output_streams[i];
2389
2390         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
2391             continue;
2392
2393         do_streamcopy(ist, ost, pkt);
2394     }
2395
2396     return got_output;
2397 }
2398
2399 static void print_sdp(void)
2400 {
2401     char sdp[16384];
2402     int i;
2403     int j;
2404     AVIOContext *sdp_pb;
2405     AVFormatContext **avc = av_malloc_array(nb_output_files, sizeof(*avc));
2406
2407     if (!avc)
2408         exit_program(1);
2409     for (i = 0, j = 0; i < nb_output_files; i++) {
2410         if (!strcmp(output_files[i]->ctx->oformat->name, "rtp")) {
2411             avc[j] = output_files[i]->ctx;
2412             j++;
2413         }
2414     }
2415
2416     av_sdp_create(avc, j, sdp, sizeof(sdp));
2417
2418     if (!sdp_filename) {
2419         printf("SDP:\n%s\n", sdp);
2420         fflush(stdout);
2421     } else {
2422         if (avio_open2(&sdp_pb, sdp_filename, AVIO_FLAG_WRITE, &int_cb, NULL) < 0) {
2423             av_log(NULL, AV_LOG_ERROR, "Failed to open sdp file '%s'\n", sdp_filename);
2424         } else {
2425             avio_printf(sdp_pb, "SDP:\n%s", sdp);
2426             avio_closep(&sdp_pb);
2427             av_freep(&sdp_filename);
2428         }
2429     }
2430
2431     av_freep(&avc);
2432 }
2433
2434 static const HWAccel *get_hwaccel(enum AVPixelFormat pix_fmt)
2435 {
2436     int i;
2437     for (i = 0; hwaccels[i].name; i++)
2438         if (hwaccels[i].pix_fmt == pix_fmt)
2439             return &hwaccels[i];
2440     return NULL;
2441 }
2442
2443 static enum AVPixelFormat get_format(AVCodecContext *s, const enum AVPixelFormat *pix_fmts)
2444 {
2445     InputStream *ist = s->opaque;
2446     const enum AVPixelFormat *p;
2447     int ret;
2448
2449     for (p = pix_fmts; *p != -1; p++) {
2450         const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(*p);
2451         const HWAccel *hwaccel;
2452
2453         if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL))
2454             break;
2455
2456         hwaccel = get_hwaccel(*p);
2457         if (!hwaccel ||
2458             (ist->active_hwaccel_id && ist->active_hwaccel_id != hwaccel->id) ||
2459             (ist->hwaccel_id != HWACCEL_AUTO && ist->hwaccel_id != hwaccel->id))
2460             continue;
2461
2462         ret = hwaccel->init(s);
2463         if (ret < 0) {
2464             if (ist->hwaccel_id == hwaccel->id) {
2465                 av_log(NULL, AV_LOG_FATAL,
2466                        "%s hwaccel requested for input stream #%d:%d, "
2467                        "but cannot be initialized.\n", hwaccel->name,
2468                        ist->file_index, ist->st->index);
2469                 return AV_PIX_FMT_NONE;
2470             }
2471             continue;
2472         }
2473         ist->active_hwaccel_id = hwaccel->id;
2474         ist->hwaccel_pix_fmt   = *p;
2475         break;
2476     }
2477
2478     return *p;
2479 }
2480
2481 static int get_buffer(AVCodecContext *s, AVFrame *frame, int flags)
2482 {
2483     InputStream *ist = s->opaque;
2484
2485     if (ist->hwaccel_get_buffer && frame->format == ist->hwaccel_pix_fmt)
2486         return ist->hwaccel_get_buffer(s, frame, flags);
2487
2488     return avcodec_default_get_buffer2(s, frame, flags);
2489 }
2490
2491 static int init_input_stream(int ist_index, char *error, int error_len)
2492 {
2493     int ret;
2494     InputStream *ist = input_streams[ist_index];
2495
2496     if (ist->decoding_needed) {
2497         AVCodec *codec = ist->dec;
2498         if (!codec) {
2499             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
2500                     avcodec_get_name(ist->dec_ctx->codec_id), ist->file_index, ist->st->index);
2501             return AVERROR(EINVAL);
2502         }
2503
2504         ist->dec_ctx->opaque                = ist;
2505         ist->dec_ctx->get_format            = get_format;
2506         ist->dec_ctx->get_buffer2           = get_buffer;
2507         ist->dec_ctx->thread_safe_callbacks = 1;
2508
2509         av_opt_set_int(ist->dec_ctx, "refcounted_frames", 1, 0);
2510         if (ist->dec_ctx->codec_id == AV_CODEC_ID_DVB_SUBTITLE &&
2511            (ist->decoding_needed & DECODING_FOR_OST)) {
2512             av_dict_set(&ist->decoder_opts, "compute_edt", "1", AV_DICT_DONT_OVERWRITE);
2513             if (ist->decoding_needed & DECODING_FOR_FILTER)
2514                 av_log(NULL, AV_LOG_WARNING, "Warning using DVB subtitles for filtering and output at the same time is not fully supported, also see -compute_edt [0|1]\n");
2515         }
2516
2517         if (!av_dict_get(ist->decoder_opts, "threads", NULL, 0))
2518             av_dict_set(&ist->decoder_opts, "threads", "auto", 0);
2519         if ((ret = avcodec_open2(ist->dec_ctx, codec, &ist->decoder_opts)) < 0) {
2520             if (ret == AVERROR_EXPERIMENTAL)
2521                 abort_codec_experimental(codec, 0);
2522
2523             snprintf(error, error_len,
2524                      "Error while opening decoder for input stream "
2525                      "#%d:%d : %s",
2526                      ist->file_index, ist->st->index, av_err2str(ret));
2527             return ret;
2528         }
2529         assert_avoptions(ist->decoder_opts);
2530     }
2531
2532     ist->next_pts = AV_NOPTS_VALUE;
2533     ist->next_dts = AV_NOPTS_VALUE;
2534
2535     return 0;
2536 }
2537
2538 static InputStream *get_input_stream(OutputStream *ost)
2539 {
2540     if (ost->source_index >= 0)
2541         return input_streams[ost->source_index];
2542     return NULL;
2543 }
2544
2545 static int compare_int64(const void *a, const void *b)
2546 {
2547     int64_t va = *(int64_t *)a, vb = *(int64_t *)b;
2548     return va < vb ? -1 : va > vb ? +1 : 0;
2549 }
2550
2551 static void parse_forced_key_frames(char *kf, OutputStream *ost,
2552                                     AVCodecContext *avctx)
2553 {
2554     char *p;
2555     int n = 1, i, size, index = 0;
2556     int64_t t, *pts;
2557
2558     for (p = kf; *p; p++)
2559         if (*p == ',')
2560             n++;
2561     size = n;
2562     pts = av_malloc_array(size, sizeof(*pts));
2563     if (!pts) {
2564         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
2565         exit_program(1);
2566     }
2567
2568     p = kf;
2569     for (i = 0; i < n; i++) {
2570         char *next = strchr(p, ',');
2571
2572         if (next)
2573             *next++ = 0;
2574
2575         if (!memcmp(p, "chapters", 8)) {
2576
2577             AVFormatContext *avf = output_files[ost->file_index]->ctx;
2578             int j;
2579
2580             if (avf->nb_chapters > INT_MAX - size ||
2581                 !(pts = av_realloc_f(pts, size += avf->nb_chapters - 1,
2582                                      sizeof(*pts)))) {
2583                 av_log(NULL, AV_LOG_FATAL,
2584                        "Could not allocate forced key frames array.\n");
2585                 exit_program(1);
2586             }
2587             t = p[8] ? parse_time_or_die("force_key_frames", p + 8, 1) : 0;
2588             t = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
2589
2590             for (j = 0; j < avf->nb_chapters; j++) {
2591                 AVChapter *c = avf->chapters[j];
2592                 av_assert1(index < size);
2593                 pts[index++] = av_rescale_q(c->start, c->time_base,
2594                                             avctx->time_base) + t;
2595             }
2596
2597         } else {
2598
2599             t = parse_time_or_die("force_key_frames", p, 1);
2600             av_assert1(index < size);
2601             pts[index++] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
2602
2603         }
2604
2605         p = next;
2606     }
2607
2608     av_assert0(index == size);
2609     qsort(pts, size, sizeof(*pts), compare_int64);
2610     ost->forced_kf_count = size;
2611     ost->forced_kf_pts   = pts;
2612 }
2613
2614 static void report_new_stream(int input_index, AVPacket *pkt)
2615 {
2616     InputFile *file = input_files[input_index];
2617     AVStream *st = file->ctx->streams[pkt->stream_index];
2618
2619     if (pkt->stream_index < file->nb_streams_warn)
2620         return;
2621     av_log(file->ctx, AV_LOG_WARNING,
2622            "New %s stream %d:%d at pos:%"PRId64" and DTS:%ss\n",
2623            av_get_media_type_string(st->codec->codec_type),
2624            input_index, pkt->stream_index,
2625            pkt->pos, av_ts2timestr(pkt->dts, &st->time_base));
2626     file->nb_streams_warn = pkt->stream_index + 1;
2627 }
2628
2629 static void set_encoder_id(OutputFile *of, OutputStream *ost)
2630 {
2631     AVDictionaryEntry *e;
2632
2633     uint8_t *encoder_string;
2634     int encoder_string_len;
2635     int format_flags = 0;
2636     int codec_flags = 0;
2637
2638     if (av_dict_get(ost->st->metadata, "encoder",  NULL, 0))
2639         return;
2640
2641     e = av_dict_get(of->opts, "fflags", NULL, 0);
2642     if (e) {
2643         const AVOption *o = av_opt_find(of->ctx, "fflags", NULL, 0, 0);
2644         if (!o)
2645             return;
2646         av_opt_eval_flags(of->ctx, o, e->value, &format_flags);
2647     }
2648     e = av_dict_get(ost->encoder_opts, "flags", NULL, 0);
2649     if (e) {
2650         const AVOption *o = av_opt_find(ost->enc_ctx, "flags", NULL, 0, 0);
2651         if (!o)
2652             return;
2653         av_opt_eval_flags(ost->enc_ctx, o, e->value, &codec_flags);
2654     }
2655
2656     encoder_string_len = sizeof(LIBAVCODEC_IDENT) + strlen(ost->enc->name) + 2;
2657     encoder_string     = av_mallocz(encoder_string_len);
2658     if (!encoder_string)
2659         exit_program(1);
2660
2661     if (!(format_flags & AVFMT_FLAG_BITEXACT) && !(codec_flags & CODEC_FLAG_BITEXACT))
2662         av_strlcpy(encoder_string, LIBAVCODEC_IDENT " ", encoder_string_len);
2663     else
2664         av_strlcpy(encoder_string, "Lavc ", encoder_string_len);
2665     av_strlcat(encoder_string, ost->enc->name, encoder_string_len);
2666     av_dict_set(&ost->st->metadata, "encoder",  encoder_string,
2667                 AV_DICT_DONT_STRDUP_VAL | AV_DICT_DONT_OVERWRITE);
2668 }
2669
2670 static int transcode_init(void)
2671 {
2672     int ret = 0, i, j, k;
2673     AVFormatContext *oc;
2674     OutputStream *ost;
2675     InputStream *ist;
2676     char error[1024] = {0};
2677     int want_sdp = 1;
2678
2679     for (i = 0; i < nb_filtergraphs; i++) {
2680         FilterGraph *fg = filtergraphs[i];
2681         for (j = 0; j < fg->nb_outputs; j++) {
2682             OutputFilter *ofilter = fg->outputs[j];
2683             if (!ofilter->ost || ofilter->ost->source_index >= 0)
2684                 continue;
2685             if (fg->nb_inputs != 1)
2686                 continue;
2687             for (k = nb_input_streams-1; k >= 0 ; k--)
2688                 if (fg->inputs[0]->ist == input_streams[k])
2689                     break;
2690             ofilter->ost->source_index = k;
2691         }
2692     }
2693
2694     /* init framerate emulation */
2695     for (i = 0; i < nb_input_files; i++) {
2696         InputFile *ifile = input_files[i];
2697         if (ifile->rate_emu)
2698             for (j = 0; j < ifile->nb_streams; j++)
2699                 input_streams[j + ifile->ist_index]->start = av_gettime_relative();
2700     }
2701
2702     /* output stream init */
2703     for (i = 0; i < nb_output_files; i++) {
2704         oc = output_files[i]->ctx;
2705         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2706             av_dump_format(oc, i, oc->filename, 1);
2707             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2708             return AVERROR(EINVAL);
2709         }
2710     }
2711
2712     /* init complex filtergraphs */
2713     for (i = 0; i < nb_filtergraphs; i++)
2714         if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
2715             return ret;
2716
2717     /* for each output stream, we compute the right encoding parameters */
2718     for (i = 0; i < nb_output_streams; i++) {
2719         AVCodecContext *enc_ctx;
2720         AVCodecContext *dec_ctx = NULL;
2721         ost = output_streams[i];
2722         oc  = output_files[ost->file_index]->ctx;
2723         ist = get_input_stream(ost);
2724
2725         if (ost->attachment_filename)
2726             continue;
2727
2728         enc_ctx = ost->stream_copy ? ost->st->codec : ost->enc_ctx;
2729
2730         if (ist) {
2731             dec_ctx = ist->dec_ctx;
2732
2733             ost->st->disposition          = ist->st->disposition;
2734             enc_ctx->bits_per_raw_sample    = dec_ctx->bits_per_raw_sample;
2735             enc_ctx->chroma_sample_location = dec_ctx->chroma_sample_location;
2736         } else {
2737             for (j=0; j<oc->nb_streams; j++) {
2738                 AVStream *st = oc->streams[j];
2739                 if (st != ost->st && st->codec->codec_type == enc_ctx->codec_type)
2740                     break;
2741             }
2742             if (j == oc->nb_streams)
2743                 if (enc_ctx->codec_type == AVMEDIA_TYPE_AUDIO || enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO)
2744                     ost->st->disposition = AV_DISPOSITION_DEFAULT;
2745         }
2746
2747         if (ost->stream_copy) {
2748             AVRational sar;
2749             uint64_t extra_size;
2750
2751             av_assert0(ist && !ost->filter);
2752
2753             extra_size = (uint64_t)dec_ctx->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2754
2755             if (extra_size > INT_MAX) {
2756                 return AVERROR(EINVAL);
2757             }
2758
2759             /* if stream_copy is selected, no need to decode or encode */
2760             enc_ctx->codec_id   = dec_ctx->codec_id;
2761             enc_ctx->codec_type = dec_ctx->codec_type;
2762
2763             if (!enc_ctx->codec_tag) {
2764                 unsigned int codec_tag;
2765                 if (!oc->oformat->codec_tag ||
2766                      av_codec_get_id (oc->oformat->codec_tag, dec_ctx->codec_tag) == enc_ctx->codec_id ||
2767                      !av_codec_get_tag2(oc->oformat->codec_tag, dec_ctx->codec_id, &codec_tag))
2768                     enc_ctx->codec_tag = dec_ctx->codec_tag;
2769             }
2770
2771             enc_ctx->bit_rate       = dec_ctx->bit_rate;
2772             enc_ctx->rc_max_rate    = dec_ctx->rc_max_rate;
2773             enc_ctx->rc_buffer_size = dec_ctx->rc_buffer_size;
2774             enc_ctx->field_order    = dec_ctx->field_order;
2775             if (dec_ctx->extradata_size) {
2776                 enc_ctx->extradata      = av_mallocz(extra_size);
2777                 if (!enc_ctx->extradata) {
2778                     return AVERROR(ENOMEM);
2779                 }
2780                 memcpy(enc_ctx->extradata, dec_ctx->extradata, dec_ctx->extradata_size);
2781             }
2782             enc_ctx->extradata_size= dec_ctx->extradata_size;
2783             enc_ctx->bits_per_coded_sample  = dec_ctx->bits_per_coded_sample;
2784
2785             enc_ctx->time_base = ist->st->time_base;
2786             /*
2787              * Avi is a special case here because it supports variable fps but
2788              * having the fps and timebase differe significantly adds quite some
2789              * overhead
2790              */
2791             if(!strcmp(oc->oformat->name, "avi")) {
2792                 if ( copy_tb<0 && av_q2d(ist->st->r_frame_rate) >= av_q2d(ist->st->avg_frame_rate)
2793                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(ist->st->time_base)
2794                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(dec_ctx->time_base)
2795                                && av_q2d(ist->st->time_base) < 1.0/500 && av_q2d(dec_ctx->time_base) < 1.0/500
2796                      || copy_tb==2){
2797                     enc_ctx->time_base.num = ist->st->r_frame_rate.den;
2798                     enc_ctx->time_base.den = 2*ist->st->r_frame_rate.num;
2799                     enc_ctx->ticks_per_frame = 2;
2800                 } else if (   copy_tb<0 && av_q2d(dec_ctx->time_base)*dec_ctx->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2801                                  && av_q2d(ist->st->time_base) < 1.0/500
2802                     || copy_tb==0){
2803                     enc_ctx->time_base = dec_ctx->time_base;
2804                     enc_ctx->time_base.num *= dec_ctx->ticks_per_frame;
2805                     enc_ctx->time_base.den *= 2;
2806                     enc_ctx->ticks_per_frame = 2;
2807                 }
2808             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2809                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2810                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2811                       && strcmp(oc->oformat->name, "f4v")
2812             ) {
2813                 if(   copy_tb<0 && dec_ctx->time_base.den
2814                                 && av_q2d(dec_ctx->time_base)*dec_ctx->ticks_per_frame > av_q2d(ist->st->time_base)
2815                                 && av_q2d(ist->st->time_base) < 1.0/500
2816                    || copy_tb==0){
2817                     enc_ctx->time_base = dec_ctx->time_base;
2818                     enc_ctx->time_base.num *= dec_ctx->ticks_per_frame;
2819                 }
2820             }
2821             if (   enc_ctx->codec_tag == AV_RL32("tmcd")
2822                 && dec_ctx->time_base.num < dec_ctx->time_base.den
2823                 && dec_ctx->time_base.num > 0
2824                 && 121LL*dec_ctx->time_base.num > dec_ctx->time_base.den) {
2825                 enc_ctx->time_base = dec_ctx->time_base;
2826             }
2827
2828             if (ist && !ost->frame_rate.num)
2829                 ost->frame_rate = ist->framerate;
2830             if(ost->frame_rate.num)
2831                 enc_ctx->time_base = av_inv_q(ost->frame_rate);
2832
2833             av_reduce(&enc_ctx->time_base.num, &enc_ctx->time_base.den,
2834                         enc_ctx->time_base.num, enc_ctx->time_base.den, INT_MAX);
2835
2836             if (ist->st->nb_side_data) {
2837                 ost->st->side_data = av_realloc_array(NULL, ist->st->nb_side_data,
2838                                                       sizeof(*ist->st->side_data));
2839                 if (!ost->st->side_data)
2840                     return AVERROR(ENOMEM);
2841
2842                 ost->st->nb_side_data = 0;
2843                 for (j = 0; j < ist->st->nb_side_data; j++) {
2844                     const AVPacketSideData *sd_src = &ist->st->side_data[j];
2845                     AVPacketSideData *sd_dst = &ost->st->side_data[ost->st->nb_side_data];
2846
2847                     if (ost->rotate_overridden && sd_src->type == AV_PKT_DATA_DISPLAYMATRIX)
2848                         continue;
2849
2850                     sd_dst->data = av_malloc(sd_src->size);
2851                     if (!sd_dst->data)
2852                         return AVERROR(ENOMEM);
2853                     memcpy(sd_dst->data, sd_src->data, sd_src->size);
2854                     sd_dst->size = sd_src->size;
2855                     sd_dst->type = sd_src->type;
2856                     ost->st->nb_side_data++;
2857                 }
2858             }
2859
2860             ost->parser = av_parser_init(enc_ctx->codec_id);
2861
2862             switch (enc_ctx->codec_type) {
2863             case AVMEDIA_TYPE_AUDIO:
2864                 if (audio_volume != 256) {
2865                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2866                     exit_program(1);
2867                 }
2868                 enc_ctx->channel_layout     = dec_ctx->channel_layout;
2869                 enc_ctx->sample_rate        = dec_ctx->sample_rate;
2870                 enc_ctx->channels           = dec_ctx->channels;
2871                 enc_ctx->frame_size         = dec_ctx->frame_size;
2872                 enc_ctx->audio_service_type = dec_ctx->audio_service_type;
2873                 enc_ctx->block_align        = dec_ctx->block_align;
2874                 enc_ctx->initial_padding    = dec_ctx->delay;
2875 #if FF_API_AUDIOENC_DELAY
2876                 enc_ctx->delay              = dec_ctx->delay;
2877 #endif
2878                 if((enc_ctx->block_align == 1 || enc_ctx->block_align == 1152 || enc_ctx->block_align == 576) && enc_ctx->codec_id == AV_CODEC_ID_MP3)
2879                     enc_ctx->block_align= 0;
2880                 if(enc_ctx->codec_id == AV_CODEC_ID_AC3)
2881                     enc_ctx->block_align= 0;
2882                 break;
2883             case AVMEDIA_TYPE_VIDEO:
2884                 enc_ctx->pix_fmt            = dec_ctx->pix_fmt;
2885                 enc_ctx->width              = dec_ctx->width;
2886                 enc_ctx->height             = dec_ctx->height;
2887                 enc_ctx->has_b_frames       = dec_ctx->has_b_frames;
2888                 if (ost->frame_aspect_ratio.num) { // overridden by the -aspect cli option
2889                     sar =
2890                         av_mul_q(ost->frame_aspect_ratio,
2891                                  (AVRational){ enc_ctx->height, enc_ctx->width });
2892                     av_log(NULL, AV_LOG_WARNING, "Overriding aspect ratio "
2893                            "with stream copy may produce invalid files\n");
2894                 }
2895                 else if (ist->st->sample_aspect_ratio.num)
2896                     sar = ist->st->sample_aspect_ratio;
2897                 else
2898                     sar = dec_ctx->sample_aspect_ratio;
2899                 ost->st->sample_aspect_ratio = enc_ctx->sample_aspect_ratio = sar;
2900                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2901                 ost->st->r_frame_rate = ist->st->r_frame_rate;
2902                 break;
2903             case AVMEDIA_TYPE_SUBTITLE:
2904                 enc_ctx->width  = dec_ctx->width;
2905                 enc_ctx->height = dec_ctx->height;
2906                 break;
2907             case AVMEDIA_TYPE_UNKNOWN:
2908             case AVMEDIA_TYPE_DATA:
2909             case AVMEDIA_TYPE_ATTACHMENT:
2910                 break;
2911             default:
2912                 abort();
2913             }
2914         } else {
2915             if (!ost->enc)
2916                 ost->enc = avcodec_find_encoder(enc_ctx->codec_id);
2917             if (!ost->enc) {
2918                 /* should only happen when a default codec is not present. */
2919                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
2920                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2921                 ret = AVERROR(EINVAL);
2922                 goto dump_format;
2923             }
2924
2925             if (ist)
2926                 ist->decoding_needed |= DECODING_FOR_OST;
2927             ost->encoding_needed = 1;
2928
2929             set_encoder_id(output_files[ost->file_index], ost);
2930
2931             if (!ost->filter &&
2932                 (enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO ||
2933                  enc_ctx->codec_type == AVMEDIA_TYPE_AUDIO)) {
2934                     FilterGraph *fg;
2935                     fg = init_simple_filtergraph(ist, ost);
2936                     if (configure_filtergraph(fg)) {
2937                         av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2938                         exit_program(1);
2939                     }
2940             }
2941
2942             if (enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO) {
2943                 if (!ost->frame_rate.num)
2944                     ost->frame_rate = av_buffersink_get_frame_rate(ost->filter->filter);
2945                 if (ist && !ost->frame_rate.num)
2946                     ost->frame_rate = ist->framerate;
2947                 if (ist && !ost->frame_rate.num)
2948                     ost->frame_rate = ist->st->r_frame_rate;
2949                 if (ist && !ost->frame_rate.num) {
2950                     ost->frame_rate = (AVRational){25, 1};
2951                     av_log(NULL, AV_LOG_WARNING,
2952                            "No information "
2953                            "about the input framerate is available. Falling "
2954                            "back to a default value of 25fps for output stream #%d:%d. Use the -r option "
2955                            "if you want a different framerate.\n",
2956                            ost->file_index, ost->index);
2957                 }
2958 //                    ost->frame_rate = ist->st->avg_frame_rate.num ? ist->st->avg_frame_rate : (AVRational){25, 1};
2959                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2960                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2961                     ost->frame_rate = ost->enc->supported_framerates[idx];
2962                 }
2963                 // reduce frame rate for mpeg4 to be within the spec limits
2964                 if (enc_ctx->codec_id == AV_CODEC_ID_MPEG4) {
2965                     av_reduce(&ost->frame_rate.num, &ost->frame_rate.den,
2966                               ost->frame_rate.num, ost->frame_rate.den, 65535);
2967                 }
2968             }
2969
2970             switch (enc_ctx->codec_type) {
2971             case AVMEDIA_TYPE_AUDIO:
2972                 enc_ctx->sample_fmt     = ost->filter->filter->inputs[0]->format;
2973                 enc_ctx->sample_rate    = ost->filter->filter->inputs[0]->sample_rate;
2974                 enc_ctx->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
2975                 enc_ctx->channels       = avfilter_link_get_channels(ost->filter->filter->inputs[0]);
2976                 enc_ctx->time_base      = (AVRational){ 1, enc_ctx->sample_rate };
2977                 break;
2978             case AVMEDIA_TYPE_VIDEO:
2979                 enc_ctx->time_base = av_inv_q(ost->frame_rate);
2980                 if (!(enc_ctx->time_base.num && enc_ctx->time_base.den))
2981                     enc_ctx->time_base = ost->filter->filter->inputs[0]->time_base;
2982                 if (   av_q2d(enc_ctx->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
2983                    && (video_sync_method == VSYNC_CFR || video_sync_method == VSYNC_VSCFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
2984                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
2985                                                "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
2986                 }
2987                 for (j = 0; j < ost->forced_kf_count; j++)
2988                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2989                                                          AV_TIME_BASE_Q,
2990                                                          enc_ctx->time_base);
2991
2992                 enc_ctx->width  = ost->filter->filter->inputs[0]->w;
2993                 enc_ctx->height = ost->filter->filter->inputs[0]->h;
2994                 enc_ctx->sample_aspect_ratio = ost->st->sample_aspect_ratio =
2995                     ost->frame_aspect_ratio.num ? // overridden by the -aspect cli option
2996                     av_mul_q(ost->frame_aspect_ratio, (AVRational){ enc_ctx->height, enc_ctx->width }) :
2997                     ost->filter->filter->inputs[0]->sample_aspect_ratio;
2998                 if (!strncmp(ost->enc->name, "libx264", 7) &&
2999                     enc_ctx->pix_fmt == AV_PIX_FMT_NONE &&
3000                     ost->filter->filter->inputs[0]->format != AV_PIX_FMT_YUV420P)
3001                     av_log(NULL, AV_LOG_WARNING,
3002                            "No pixel format specified, %s for H.264 encoding chosen.\n"
3003                            "Use -pix_fmt yuv420p for compatibility with outdated media players.\n",
3004                            av_get_pix_fmt_name(ost->filter->filter->inputs[0]->format));
3005                 if (!strncmp(ost->enc->name, "mpeg2video", 10) &&
3006                     enc_ctx->pix_fmt == AV_PIX_FMT_NONE &&
3007                     ost->filter->filter->inputs[0]->format != AV_PIX_FMT_YUV420P)
3008                     av_log(NULL, AV_LOG_WARNING,
3009                            "No pixel format specified, %s for MPEG-2 encoding chosen.\n"
3010                            "Use -pix_fmt yuv420p for compatibility with outdated media players.\n",
3011                            av_get_pix_fmt_name(ost->filter->filter->inputs[0]->format));
3012                 enc_ctx->pix_fmt = ost->filter->filter->inputs[0]->format;
3013
3014                 ost->st->avg_frame_rate = ost->frame_rate;
3015
3016                 if (!dec_ctx ||
3017                     enc_ctx->width   != dec_ctx->width  ||
3018                     enc_ctx->height  != dec_ctx->height ||
3019                     enc_ctx->pix_fmt != dec_ctx->pix_fmt) {
3020                     enc_ctx->bits_per_raw_sample = frame_bits_per_raw_sample;
3021                 }
3022
3023                 if (ost->forced_keyframes) {
3024                     if (!strncmp(ost->forced_keyframes, "expr:", 5)) {
3025                         ret = av_expr_parse(&ost->forced_keyframes_pexpr, ost->forced_keyframes+5,
3026                                             forced_keyframes_const_names, NULL, NULL, NULL, NULL, 0, NULL);
3027                         if (ret < 0) {
3028                             av_log(NULL, AV_LOG_ERROR,
3029                                    "Invalid force_key_frames expression '%s'\n", ost->forced_keyframes+5);
3030                             return ret;
3031                         }
3032                         ost->forced_keyframes_expr_const_values[FKF_N] = 0;
3033                         ost->forced_keyframes_expr_const_values[FKF_N_FORCED] = 0;
3034                         ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] = NAN;
3035                         ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] = NAN;
3036
3037                         // Don't parse the 'forced_keyframes' in case of 'keep-source-keyframes',
3038                         // parse it only for static kf timings
3039                     } else if(strncmp(ost->forced_keyframes, "source", 6)) {
3040                         parse_forced_key_frames(ost->forced_keyframes, ost, ost->enc_ctx);
3041                     }
3042                 }
3043                 break;
3044             case AVMEDIA_TYPE_SUBTITLE:
3045                 enc_ctx->time_base = (AVRational){1, 1000};
3046                 if (!enc_ctx->width) {
3047                     enc_ctx->width     = input_streams[ost->source_index]->st->codec->width;
3048                     enc_ctx->height    = input_streams[ost->source_index]->st->codec->height;
3049                 }
3050                 break;
3051             case AVMEDIA_TYPE_DATA:
3052                 break;
3053             default:
3054                 abort();
3055                 break;
3056             }
3057             /* two pass mode */
3058             if (enc_ctx->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
3059                 char logfilename[1024];
3060                 FILE *f;
3061
3062                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
3063                          ost->logfile_prefix ? ost->logfile_prefix :
3064                                                DEFAULT_PASS_LOGFILENAME_PREFIX,
3065                          i);
3066                 if (!strcmp(ost->enc->name, "libx264")) {
3067                     av_dict_set(&ost->encoder_opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
3068                 } else {
3069                     if (enc_ctx->flags & CODEC_FLAG_PASS2) {
3070                         char  *logbuffer;
3071                         size_t logbuffer_size;
3072                         if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
3073                             av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
3074                                    logfilename);
3075                             exit_program(1);
3076                         }
3077                         enc_ctx->stats_in = logbuffer;
3078                     }
3079                     if (enc_ctx->flags & CODEC_FLAG_PASS1) {
3080                         f = av_fopen_utf8(logfilename, "wb");
3081                         if (!f) {
3082                             av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
3083                                 logfilename, strerror(errno));
3084                             exit_program(1);
3085                         }
3086                         ost->logfile = f;
3087                     }
3088                 }
3089             }
3090         }
3091
3092         if (ost->disposition) {
3093             static const AVOption opts[] = {
3094                 { "disposition"         , NULL, 0, AV_OPT_TYPE_FLAGS, { .i64 = 0 }, INT64_MIN, INT64_MAX, .unit = "flags" },
3095                 { "default"             , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_DEFAULT           },    .unit = "flags" },
3096                 { "dub"                 , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_DUB               },    .unit = "flags" },
3097                 { "original"            , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_ORIGINAL          },    .unit = "flags" },
3098                 { "comment"             , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_COMMENT           },    .unit = "flags" },
3099                 { "lyrics"              , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_LYRICS            },    .unit = "flags" },
3100                 { "karaoke"             , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_KARAOKE           },    .unit = "flags" },
3101                 { "forced"              , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_FORCED            },    .unit = "flags" },
3102                 { "hearing_impaired"    , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_HEARING_IMPAIRED  },    .unit = "flags" },
3103                 { "visual_impaired"     , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_VISUAL_IMPAIRED   },    .unit = "flags" },
3104                 { "clean_effects"       , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_CLEAN_EFFECTS     },    .unit = "flags" },
3105                 { "captions"            , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_CAPTIONS          },    .unit = "flags" },
3106                 { "descriptions"        , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_DESCRIPTIONS      },    .unit = "flags" },
3107                 { "metadata"            , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_METADATA          },    .unit = "flags" },
3108                 { NULL },
3109             };
3110             static const AVClass class = {
3111                 .class_name = "",
3112                 .item_name  = av_default_item_name,
3113                 .option     = opts,
3114                 .version    = LIBAVUTIL_VERSION_INT,
3115             };
3116             const AVClass *pclass = &class;
3117
3118             ret = av_opt_eval_flags(&pclass, &opts[0], ost->disposition, &ost->st->disposition);
3119             if (ret < 0)
3120                 goto dump_format;
3121         }
3122     }
3123
3124     /* open each encoder */
3125     for (i = 0; i < nb_output_streams; i++) {
3126         ost = output_streams[i];
3127         if (ost->encoding_needed) {
3128             AVCodec      *codec = ost->enc;
3129             AVCodecContext *dec = NULL;
3130
3131             if ((ist = get_input_stream(ost)))
3132                 dec = ist->dec_ctx;
3133             if (dec && dec->subtitle_header) {
3134                 /* ASS code assumes this buffer is null terminated so add extra byte. */
3135                 ost->enc_ctx->subtitle_header = av_mallocz(dec->subtitle_header_size + 1);
3136                 if (!ost->enc_ctx->subtitle_header) {
3137                     ret = AVERROR(ENOMEM);
3138                     goto dump_format;
3139                 }
3140                 memcpy(ost->enc_ctx->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
3141                 ost->enc_ctx->subtitle_header_size = dec->subtitle_header_size;
3142             }
3143             if (!av_dict_get(ost->encoder_opts, "threads", NULL, 0))
3144                 av_dict_set(&ost->encoder_opts, "threads", "auto", 0);
3145             av_dict_set(&ost->encoder_opts, "side_data_only_packets", "1", 0);
3146
3147             if ((ret = avcodec_open2(ost->enc_ctx, codec, &ost->encoder_opts)) < 0) {
3148                 if (ret == AVERROR_EXPERIMENTAL)
3149                     abort_codec_experimental(codec, 1);
3150                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
3151                         ost->file_index, ost->index);
3152                 goto dump_format;
3153             }
3154             if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
3155                 !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
3156                 av_buffersink_set_frame_size(ost->filter->filter,
3157                                              ost->enc_ctx->frame_size);
3158             assert_avoptions(ost->encoder_opts);
3159             if (ost->enc_ctx->bit_rate && ost->enc_ctx->bit_rate < 1000)
3160                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
3161                                              " It takes bits/s as argument, not kbits/s\n");
3162
3163             ret = avcodec_copy_context(ost->st->codec, ost->enc_ctx);
3164             if (ret < 0) {
3165                 av_log(NULL, AV_LOG_FATAL,
3166                        "Error initializing the output stream codec context.\n");
3167                 exit_program(1);
3168             }
3169
3170             // copy timebase while removing common factors
3171             ost->st->time_base = av_add_q(ost->enc_ctx->time_base, (AVRational){0, 1});
3172             ost->st->codec->codec= ost->enc_ctx->codec;
3173         } else {
3174             ret = av_opt_set_dict(ost->enc_ctx, &ost->encoder_opts);
3175             if (ret < 0) {
3176                 av_log(NULL, AV_LOG_FATAL,
3177                     "Error setting up codec context options.\n");
3178                 return ret;
3179             }
3180             // copy timebase while removing common factors
3181             ost->st->time_base = av_add_q(ost->st->codec->time_base, (AVRational){0, 1});
3182         }
3183     }
3184
3185     /* init input streams */
3186     for (i = 0; i < nb_input_streams; i++)
3187         if ((ret = init_input_stream(i, error, sizeof(error))) < 0) {
3188             for (i = 0; i < nb_output_streams; i++) {
3189                 ost = output_streams[i];
3190                 avcodec_close(ost->enc_ctx);
3191             }
3192             goto dump_format;
3193         }
3194
3195     /* discard unused programs */
3196     for (i = 0; i < nb_input_files; i++) {
3197         InputFile *ifile = input_files[i];
3198         for (j = 0; j < ifile->ctx->nb_programs; j++) {
3199             AVProgram *p = ifile->ctx->programs[j];
3200             int discard  = AVDISCARD_ALL;
3201
3202             for (k = 0; k < p->nb_stream_indexes; k++)
3203                 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
3204                     discard = AVDISCARD_DEFAULT;
3205                     break;
3206                 }
3207             p->discard = discard;
3208         }
3209     }
3210
3211     /* open files and write file headers */
3212     for (i = 0; i < nb_output_files; i++) {
3213         oc = output_files[i]->ctx;
3214         oc->interrupt_callback = int_cb;
3215         if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
3216             snprintf(error, sizeof(error),
3217                      "Could not write header for output file #%d "
3218                      "(incorrect codec parameters ?): %s",
3219                      i, av_err2str(ret));
3220             ret = AVERROR(EINVAL);
3221             goto dump_format;
3222         }
3223 //         assert_avoptions(output_files[i]->opts);
3224         if (strcmp(oc->oformat->name, "rtp")) {
3225             want_sdp = 0;
3226         }
3227     }
3228
3229  dump_format:
3230     /* dump the file output parameters - cannot be done before in case
3231        of stream copy */
3232     for (i = 0; i < nb_output_files; i++) {
3233         av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
3234     }
3235
3236     /* dump the stream mapping */
3237     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
3238     for (i = 0; i < nb_input_streams; i++) {
3239         ist = input_streams[i];
3240
3241         for (j = 0; j < ist->nb_filters; j++) {
3242             if (ist->filters[j]->graph->graph_desc) {
3243                 av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
3244                        ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
3245                        ist->filters[j]->name);
3246                 if (nb_filtergraphs > 1)
3247                     av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
3248                 av_log(NULL, AV_LOG_INFO, "\n");
3249             }
3250         }
3251     }
3252
3253     for (i = 0; i < nb_output_streams; i++) {
3254         ost = output_streams[i];
3255
3256         if (ost->attachment_filename) {
3257             /* an attached file */
3258             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
3259                    ost->attachment_filename, ost->file_index, ost->index);
3260             continue;
3261         }
3262
3263         if (ost->filter && ost->filter->graph->graph_desc) {
3264             /* output from a complex graph */
3265             av_log(NULL, AV_LOG_INFO, "  %s", ost->filter->name);
3266             if (nb_filtergraphs > 1)
3267                 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
3268
3269             av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
3270                    ost->index, ost->enc ? ost->enc->name : "?");
3271             continue;
3272         }
3273
3274         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
3275                input_streams[ost->source_index]->file_index,
3276                input_streams[ost->source_index]->st->index,
3277                ost->file_index,
3278                ost->index);
3279         if (ost->sync_ist != input_streams[ost->source_index])
3280             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
3281                    ost->sync_ist->file_index,
3282                    ost->sync_ist->st->index);
3283         if (ost->stream_copy)
3284             av_log(NULL, AV_LOG_INFO, " (copy)");
3285         else {
3286             const AVCodec *in_codec    = input_streams[ost->source_index]->dec;
3287             const AVCodec *out_codec   = ost->enc;
3288             const char *decoder_name   = "?";
3289             const char *in_codec_name  = "?";
3290             const char *encoder_name   = "?";
3291             const char *out_codec_name = "?";
3292             const AVCodecDescriptor *desc;
3293
3294             if (in_codec) {
3295                 decoder_name  = in_codec->name;
3296                 desc = avcodec_descriptor_get(in_codec->id);
3297                 if (desc)
3298                     in_codec_name = desc->name;
3299                 if (!strcmp(decoder_name, in_codec_name))
3300                     decoder_name = "native";
3301             }
3302
3303             if (out_codec) {
3304                 encoder_name   = out_codec->name;
3305                 desc = avcodec_descriptor_get(out_codec->id);
3306                 if (desc)
3307                     out_codec_name = desc->name;
3308                 if (!strcmp(encoder_name, out_codec_name))
3309                     encoder_name = "native";
3310             }
3311
3312             av_log(NULL, AV_LOG_INFO, " (%s (%s) -> %s (%s))",
3313                    in_codec_name, decoder_name,
3314                    out_codec_name, encoder_name);
3315         }
3316         av_log(NULL, AV_LOG_INFO, "\n");
3317     }
3318
3319     if (ret) {
3320         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
3321         return ret;
3322     }
3323
3324     if (sdp_filename || want_sdp) {
3325         print_sdp();
3326     }
3327
3328     transcode_init_done = 1;
3329
3330     return 0;
3331 }
3332
3333 /* Return 1 if there remain streams where more output is wanted, 0 otherwise. */
3334 static int need_output(void)
3335 {
3336     int i;
3337
3338     for (i = 0; i < nb_output_streams; i++) {
3339         OutputStream *ost    = output_streams[i];
3340         OutputFile *of       = output_files[ost->file_index];
3341         AVFormatContext *os  = output_files[ost->file_index]->ctx;
3342
3343         if (ost->finished ||
3344             (os->pb && avio_tell(os->pb) >= of->limit_filesize))
3345             continue;
3346         if (ost->frame_number >= ost->max_frames) {
3347             int j;
3348             for (j = 0; j < of->ctx->nb_streams; j++)
3349                 close_output_stream(output_streams[of->ost_index + j]);
3350             continue;
3351         }
3352
3353         return 1;
3354     }
3355
3356     return 0;
3357 }
3358
3359 /**
3360  * Select the output stream to process.
3361  *
3362  * @return  selected output stream, or NULL if none available
3363  */
3364 static OutputStream *choose_output(void)
3365 {
3366     int i;
3367     int64_t opts_min = INT64_MAX;
3368     OutputStream *ost_min = NULL;
3369
3370     for (i = 0; i < nb_output_streams; i++) {
3371         OutputStream *ost = output_streams[i];
3372         int64_t opts = av_rescale_q(ost->st->cur_dts, ost->st->time_base,
3373                                     AV_TIME_BASE_Q);
3374         if (!ost->finished && opts < opts_min) {
3375             opts_min = opts;
3376             ost_min  = ost->unavailable ? NULL : ost;
3377         }
3378     }
3379     return ost_min;
3380 }
3381
3382 static int check_keyboard_interaction(int64_t cur_time)
3383 {
3384     int i, ret, key;
3385     static int64_t last_time;
3386     if (received_nb_signals)
3387         return AVERROR_EXIT;
3388     /* read_key() returns 0 on EOF */
3389     if(cur_time - last_time >= 100000 && !run_as_daemon){
3390         key =  read_key();
3391         last_time = cur_time;
3392     }else
3393         key = -1;
3394     if (key == 'q')
3395         return AVERROR_EXIT;
3396     if (key == '+') av_log_set_level(av_log_get_level()+10);
3397     if (key == '-') av_log_set_level(av_log_get_level()-10);
3398     if (key == 's') qp_hist     ^= 1;
3399     if (key == 'h'){
3400         if (do_hex_dump){
3401             do_hex_dump = do_pkt_dump = 0;
3402         } else if(do_pkt_dump){
3403             do_hex_dump = 1;
3404         } else
3405             do_pkt_dump = 1;
3406         av_log_set_level(AV_LOG_DEBUG);
3407     }
3408     if (key == 'c' || key == 'C'){
3409         char buf[4096], target[64], command[256], arg[256] = {0};
3410         double time;
3411         int k, n = 0;
3412         fprintf(stderr, "\nEnter command: <target>|all <time>|-1 <command>[ <argument>]\n");
3413         i = 0;
3414         while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
3415             if (k > 0)
3416                 buf[i++] = k;
3417         buf[i] = 0;
3418         if (k > 0 &&
3419             (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
3420             av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
3421                    target, time, command, arg);
3422             for (i = 0; i < nb_filtergraphs; i++) {
3423                 FilterGraph *fg = filtergraphs[i];
3424                 if (fg->graph) {
3425                     if (time < 0) {
3426                         ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
3427                                                           key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
3428                         fprintf(stderr, "Command reply for stream %d: ret:%d res:\n%s", i, ret, buf);
3429                     } else if (key == 'c') {
3430                         fprintf(stderr, "Queing commands only on filters supporting the specific command is unsupported\n");
3431                         ret = AVERROR_PATCHWELCOME;
3432                     } else {
3433                         ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
3434                         if (ret < 0)
3435                             fprintf(stderr, "Queing command failed with error %s\n", av_err2str(ret));
3436                     }
3437                 }
3438             }
3439         } else {
3440             av_log(NULL, AV_LOG_ERROR,
3441                    "Parse error, at least 3 arguments were expected, "
3442                    "only %d given in string '%s'\n", n, buf);
3443         }
3444     }
3445     if (key == 'd' || key == 'D'){
3446         int debug=0;
3447         if(key == 'D') {
3448             debug = input_streams[0]->st->codec->debug<<1;
3449             if(!debug) debug = 1;
3450             while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
3451                 debug += debug;
3452         }else
3453             if(scanf("%d", &debug)!=1)
3454                 fprintf(stderr,"error parsing debug value\n");
3455         for(i=0;i<nb_input_streams;i++) {
3456             input_streams[i]->st->codec->debug = debug;
3457         }
3458         for(i=0;i<nb_output_streams;i++) {
3459             OutputStream *ost = output_streams[i];
3460             ost->enc_ctx->debug = debug;
3461         }
3462         if(debug) av_log_set_level(AV_LOG_DEBUG);
3463         fprintf(stderr,"debug=%d\n", debug);
3464     }
3465     if (key == '?'){
3466         fprintf(stderr, "key    function\n"
3467                         "?      show this help\n"
3468                         "+      increase verbosity\n"
3469                         "-      decrease verbosity\n"
3470                         "c      Send command to first matching filter supporting it\n"
3471                         "C      Send/Que command to all matching filters\n"
3472                         "D      cycle through available debug modes\n"
3473                         "h      dump packets/hex press to cycle through the 3 states\n"
3474                         "q      quit\n"
3475                         "s      Show QP histogram\n"
3476         );
3477     }
3478     return 0;
3479 }
3480
3481 #if HAVE_PTHREADS
3482 static void *input_thread(void *arg)
3483 {
3484     InputFile *f = arg;
3485     unsigned flags = f->non_blocking ? AV_THREAD_MESSAGE_NONBLOCK : 0;
3486     int ret = 0;
3487
3488     while (1) {
3489         AVPacket pkt;
3490         ret = av_read_frame(f->ctx, &pkt);
3491
3492         if (ret == AVERROR(EAGAIN)) {
3493             av_usleep(10000);
3494             continue;
3495         }
3496         if (ret < 0) {
3497             av_thread_message_queue_set_err_recv(f->in_thread_queue, ret);
3498             break;
3499         }
3500         av_dup_packet(&pkt);
3501         ret = av_thread_message_queue_send(f->in_thread_queue, &pkt, flags);
3502         if (flags && ret == AVERROR(EAGAIN)) {
3503             flags = 0;
3504             ret = av_thread_message_queue_send(f->in_thread_queue, &pkt, flags);
3505             av_log(f->ctx, AV_LOG_WARNING,
3506                    "Thread message queue blocking; consider raising the "
3507                    "thread_queue_size option (current value: %d)\n",
3508                    f->thread_queue_size);
3509         }
3510         if (ret < 0) {
3511             if (ret != AVERROR_EOF)
3512                 av_log(f->ctx, AV_LOG_ERROR,
3513                        "Unable to send packet to main thread: %s\n",
3514                        av_err2str(ret));
3515             av_free_packet(&pkt);
3516             av_thread_message_queue_set_err_recv(f->in_thread_queue, ret);
3517             break;
3518         }
3519     }
3520
3521     return NULL;
3522 }
3523
3524 static void free_input_threads(void)
3525 {
3526     int i;
3527
3528     for (i = 0; i < nb_input_files; i++) {
3529         InputFile *f = input_files[i];
3530         AVPacket pkt;
3531
3532         if (!f || !f->in_thread_queue)
3533             continue;
3534         av_thread_message_queue_set_err_send(f->in_thread_queue, AVERROR_EOF);
3535         while (av_thread_message_queue_recv(f->in_thread_queue, &pkt, 0) >= 0)
3536             av_free_packet(&pkt);
3537
3538         pthread_join(f->thread, NULL);
3539         f->joined = 1;
3540         av_thread_message_queue_free(&f->in_thread_queue);
3541     }
3542 }
3543
3544 static int init_input_threads(void)
3545 {
3546     int i, ret;
3547
3548     if (nb_input_files == 1)
3549         return 0;
3550
3551     for (i = 0; i < nb_input_files; i++) {
3552         InputFile *f = input_files[i];
3553
3554         if (f->ctx->pb ? !f->ctx->pb->seekable :
3555             strcmp(f->ctx->iformat->name, "lavfi"))
3556             f->non_blocking = 1;
3557         ret = av_thread_message_queue_alloc(&f->in_thread_queue,
3558                                             f->thread_queue_size, sizeof(AVPacket));
3559         if (ret < 0)
3560             return ret;
3561
3562         if ((ret = pthread_create(&f->thread, NULL, input_thread, f))) {
3563             av_log(NULL, AV_LOG_ERROR, "pthread_create failed: %s. Try to increase `ulimit -v` or decrease `ulimit -s`.\n", strerror(ret));
3564             av_thread_message_queue_free(&f->in_thread_queue);
3565             return AVERROR(ret);
3566         }
3567     }
3568     return 0;
3569 }
3570
3571 static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
3572 {
3573     return av_thread_message_queue_recv(f->in_thread_queue, pkt,
3574                                         f->non_blocking ?
3575                                         AV_THREAD_MESSAGE_NONBLOCK : 0);
3576 }
3577 #endif
3578
3579 static int get_input_packet(InputFile *f, AVPacket *pkt)
3580 {
3581     if (f->rate_emu) {
3582         int i;
3583         for (i = 0; i < f->nb_streams; i++) {
3584             InputStream *ist = input_streams[f->ist_index + i];
3585             int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
3586             int64_t now = av_gettime_relative() - ist->start;
3587             if (pts > now)
3588                 return AVERROR(EAGAIN);
3589         }
3590     }
3591
3592 #if HAVE_PTHREADS
3593     if (nb_input_files > 1)
3594         return get_input_packet_mt(f, pkt);
3595 #endif
3596     return av_read_frame(f->ctx, pkt);
3597 }
3598
3599 static int got_eagain(void)
3600 {
3601     int i;
3602     for (i = 0; i < nb_output_streams; i++)
3603         if (output_streams[i]->unavailable)
3604             return 1;
3605     return 0;
3606 }
3607
3608 static void reset_eagain(void)