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