ffmpeg: Correct inter stream timestamp discontinuities
[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 #if HAVE_ISATTY
34 #if HAVE_IO_H
35 #include <io.h>
36 #endif
37 #if HAVE_UNISTD_H
38 #include <unistd.h>
39 #endif
40 #endif
41 #include "libavformat/avformat.h"
42 #include "libavdevice/avdevice.h"
43 #include "libswscale/swscale.h"
44 #include "libswresample/swresample.h"
45 #include "libavutil/opt.h"
46 #include "libavutil/channel_layout.h"
47 #include "libavutil/parseutils.h"
48 #include "libavutil/samplefmt.h"
49 #include "libavutil/colorspace.h"
50 #include "libavutil/fifo.h"
51 #include "libavutil/intreadwrite.h"
52 #include "libavutil/dict.h"
53 #include "libavutil/mathematics.h"
54 #include "libavutil/pixdesc.h"
55 #include "libavutil/avstring.h"
56 #include "libavutil/libm.h"
57 #include "libavutil/imgutils.h"
58 #include "libavutil/timestamp.h"
59 #include "libavutil/bprint.h"
60 #include "libavutil/time.h"
61 #include "libavformat/os_support.h"
62
63 #include "libavformat/ffm.h" // not public API
64
65 # include "libavfilter/avcodec.h"
66 # include "libavfilter/avfilter.h"
67 # include "libavfilter/avfiltergraph.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
83 #if HAVE_SYS_SELECT_H
84 #include <sys/select.h>
85 #endif
86
87 #if HAVE_TERMIOS_H
88 #include <fcntl.h>
89 #include <sys/ioctl.h>
90 #include <sys/time.h>
91 #include <termios.h>
92 #elif HAVE_KBHIT
93 #include <conio.h>
94 #endif
95
96 #if HAVE_PTHREADS
97 #include <pthread.h>
98 #endif
99
100 #include <time.h>
101
102 #include "ffmpeg.h"
103 #include "cmdutils.h"
104
105 #include "libavutil/avassert.h"
106
107 const char program_name[] = "ffmpeg";
108 const int program_birth_year = 2000;
109
110 static FILE *vstats_file;
111
112 const char *const forced_keyframes_const_names[] = {
113     "n",
114     "n_forced",
115     "prev_forced_n",
116     "prev_forced_t",
117     "t",
118     NULL
119 };
120
121 static void do_video_stats(OutputStream *ost, int frame_size);
122 static int64_t getutime(void);
123 static int64_t getmaxrss(void);
124
125 static int run_as_daemon  = 0;
126 static int64_t video_size = 0;
127 static int64_t audio_size = 0;
128 static int64_t subtitle_size = 0;
129 static int64_t extra_size = 0;
130 static int nb_frames_dup = 0;
131 static int nb_frames_drop = 0;
132
133 static int current_time;
134 AVIOContext *progress_avio = NULL;
135
136 static uint8_t *subtitle_out;
137
138 #if HAVE_PTHREADS
139 /* signal to input threads that they should exit; set by the main thread */
140 static int transcoding_finished;
141 #endif
142
143 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
144
145 InputStream **input_streams = NULL;
146 int        nb_input_streams = 0;
147 InputFile   **input_files   = NULL;
148 int        nb_input_files   = 0;
149
150 OutputStream **output_streams = NULL;
151 int         nb_output_streams = 0;
152 OutputFile   **output_files   = NULL;
153 int         nb_output_files   = 0;
154
155 FilterGraph **filtergraphs;
156 int        nb_filtergraphs;
157
158 #if HAVE_TERMIOS_H
159
160 /* init terminal so that we can grab keys */
161 static struct termios oldtty;
162 static int restore_tty;
163 #endif
164
165
166 /* sub2video hack:
167    Convert subtitles to video with alpha to insert them in filter graphs.
168    This is a temporary solution until libavfilter gets real subtitles support.
169  */
170
171 static int sub2video_get_blank_frame(InputStream *ist)
172 {
173     int ret;
174     AVFrame *frame = ist->sub2video.frame;
175
176     av_frame_unref(frame);
177     ist->sub2video.frame->width  = ist->sub2video.w;
178     ist->sub2video.frame->height = ist->sub2video.h;
179     ist->sub2video.frame->format = AV_PIX_FMT_RGB32;
180     if ((ret = av_frame_get_buffer(frame, 32)) < 0)
181         return ret;
182     memset(frame->data[0], 0, frame->height * frame->linesize[0]);
183     return 0;
184 }
185
186 static void sub2video_copy_rect(uint8_t *dst, int dst_linesize, int w, int h,
187                                 AVSubtitleRect *r)
188 {
189     uint32_t *pal, *dst2;
190     uint8_t *src, *src2;
191     int x, y;
192
193     if (r->type != SUBTITLE_BITMAP) {
194         av_log(NULL, AV_LOG_WARNING, "sub2video: non-bitmap subtitle\n");
195         return;
196     }
197     if (r->x < 0 || r->x + r->w > w || r->y < 0 || r->y + r->h > h) {
198         av_log(NULL, AV_LOG_WARNING, "sub2video: rectangle overflowing\n");
199         return;
200     }
201
202     dst += r->y * dst_linesize + r->x * 4;
203     src = r->pict.data[0];
204     pal = (uint32_t *)r->pict.data[1];
205     for (y = 0; y < r->h; y++) {
206         dst2 = (uint32_t *)dst;
207         src2 = src;
208         for (x = 0; x < r->w; x++)
209             *(dst2++) = pal[*(src2++)];
210         dst += dst_linesize;
211         src += r->pict.linesize[0];
212     }
213 }
214
215 static void sub2video_push_ref(InputStream *ist, int64_t pts)
216 {
217     AVFrame *frame = ist->sub2video.frame;
218     int i;
219
220     av_assert1(frame->data[0]);
221     ist->sub2video.last_pts = frame->pts = pts;
222     for (i = 0; i < ist->nb_filters; i++)
223         av_buffersrc_add_frame_flags(ist->filters[i]->filter, frame,
224                                      AV_BUFFERSRC_FLAG_KEEP_REF |
225                                      AV_BUFFERSRC_FLAG_PUSH);
226 }
227
228 static void sub2video_update(InputStream *ist, AVSubtitle *sub)
229 {
230     int w = ist->sub2video.w, h = ist->sub2video.h;
231     AVFrame *frame = ist->sub2video.frame;
232     int8_t *dst;
233     int     dst_linesize;
234     int num_rects, i;
235     int64_t pts, end_pts;
236
237     if (!frame)
238         return;
239     if (sub) {
240         pts       = av_rescale_q(sub->pts + sub->start_display_time * 1000,
241                                  AV_TIME_BASE_Q, ist->st->time_base);
242         end_pts   = av_rescale_q(sub->pts + sub->end_display_time   * 1000,
243                                  AV_TIME_BASE_Q, ist->st->time_base);
244         num_rects = sub->num_rects;
245     } else {
246         pts       = ist->sub2video.end_pts;
247         end_pts   = INT64_MAX;
248         num_rects = 0;
249     }
250     if (sub2video_get_blank_frame(ist) < 0) {
251         av_log(ist->st->codec, AV_LOG_ERROR,
252                "Impossible to get a blank canvas.\n");
253         return;
254     }
255     dst          = frame->data    [0];
256     dst_linesize = frame->linesize[0];
257     for (i = 0; i < num_rects; i++)
258         sub2video_copy_rect(dst, dst_linesize, w, h, sub->rects[i]);
259     sub2video_push_ref(ist, pts);
260     ist->sub2video.end_pts = end_pts;
261 }
262
263 static void sub2video_heartbeat(InputStream *ist, int64_t pts)
264 {
265     InputFile *infile = input_files[ist->file_index];
266     int i, j, nb_reqs;
267     int64_t pts2;
268
269     /* When a frame is read from a file, examine all sub2video streams in
270        the same file and send the sub2video frame again. Otherwise, decoded
271        video frames could be accumulating in the filter graph while a filter
272        (possibly overlay) is desperately waiting for a subtitle frame. */
273     for (i = 0; i < infile->nb_streams; i++) {
274         InputStream *ist2 = input_streams[infile->ist_index + i];
275         if (!ist2->sub2video.frame)
276             continue;
277         /* subtitles seem to be usually muxed ahead of other streams;
278            if not, substracting a larger time here is necessary */
279         pts2 = av_rescale_q(pts, ist->st->time_base, ist2->st->time_base) - 1;
280         /* do not send the heartbeat frame if the subtitle is already ahead */
281         if (pts2 <= ist2->sub2video.last_pts)
282             continue;
283         if (pts2 >= ist2->sub2video.end_pts || !ist2->sub2video.frame->data[0])
284             sub2video_update(ist2, NULL);
285         for (j = 0, nb_reqs = 0; j < ist2->nb_filters; j++)
286             nb_reqs += av_buffersrc_get_nb_failed_requests(ist2->filters[j]->filter);
287         if (nb_reqs)
288             sub2video_push_ref(ist2, pts2);
289     }
290 }
291
292 static void sub2video_flush(InputStream *ist)
293 {
294     int i;
295
296     for (i = 0; i < ist->nb_filters; i++)
297         av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
298 }
299
300 /* end of sub2video hack */
301
302 void term_exit(void)
303 {
304     av_log(NULL, AV_LOG_QUIET, "%s", "");
305 #if HAVE_TERMIOS_H
306     if(restore_tty)
307         tcsetattr (0, TCSANOW, &oldtty);
308 #endif
309 }
310
311 static volatile int received_sigterm = 0;
312 static volatile int received_nb_signals = 0;
313
314 static void
315 sigterm_handler(int sig)
316 {
317     received_sigterm = sig;
318     received_nb_signals++;
319     term_exit();
320     if(received_nb_signals > 3)
321         exit(123);
322 }
323
324 void term_init(void)
325 {
326 #if HAVE_TERMIOS_H
327     if(!run_as_daemon){
328         struct termios tty;
329         int istty = 1;
330 #if HAVE_ISATTY
331         istty = isatty(0) && isatty(2);
332 #endif
333         if (istty && tcgetattr (0, &tty) == 0) {
334             oldtty = tty;
335             restore_tty = 1;
336             atexit(term_exit);
337
338             tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
339                              |INLCR|IGNCR|ICRNL|IXON);
340             tty.c_oflag |= OPOST;
341             tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
342             tty.c_cflag &= ~(CSIZE|PARENB);
343             tty.c_cflag |= CS8;
344             tty.c_cc[VMIN] = 1;
345             tty.c_cc[VTIME] = 0;
346
347             tcsetattr (0, TCSANOW, &tty);
348         }
349         signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
350     }
351 #endif
352     avformat_network_deinit();
353
354     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
355     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
356 #ifdef SIGXCPU
357     signal(SIGXCPU, sigterm_handler);
358 #endif
359 }
360
361 /* read a key without blocking */
362 static int read_key(void)
363 {
364     unsigned char ch;
365 #if HAVE_TERMIOS_H
366     int n = 1;
367     struct timeval tv;
368     fd_set rfds;
369
370     FD_ZERO(&rfds);
371     FD_SET(0, &rfds);
372     tv.tv_sec = 0;
373     tv.tv_usec = 0;
374     n = select(1, &rfds, NULL, NULL, &tv);
375     if (n > 0) {
376         n = read(0, &ch, 1);
377         if (n == 1)
378             return ch;
379
380         return n;
381     }
382 #elif HAVE_KBHIT
383 #    if HAVE_PEEKNAMEDPIPE
384     static int is_pipe;
385     static HANDLE input_handle;
386     DWORD dw, nchars;
387     if(!input_handle){
388         input_handle = GetStdHandle(STD_INPUT_HANDLE);
389         is_pipe = !GetConsoleMode(input_handle, &dw);
390     }
391
392     if (stdin->_cnt > 0) {
393         read(0, &ch, 1);
394         return ch;
395     }
396     if (is_pipe) {
397         /* When running under a GUI, you will end here. */
398         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL)) {
399             // input pipe may have been closed by the program that ran ffmpeg
400             return -1;
401         }
402         //Read it
403         if(nchars != 0) {
404             read(0, &ch, 1);
405             return ch;
406         }else{
407             return -1;
408         }
409     }
410 #    endif
411     if(kbhit())
412         return(getch());
413 #endif
414     return -1;
415 }
416
417 static int decode_interrupt_cb(void *ctx)
418 {
419     return received_nb_signals > 1;
420 }
421
422 const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
423
424 static void exit_program(void)
425 {
426     int i, j;
427
428     if (do_benchmark) {
429         int maxrss = getmaxrss() / 1024;
430         printf("bench: maxrss=%ikB\n", maxrss);
431     }
432
433     for (i = 0; i < nb_filtergraphs; i++) {
434         avfilter_graph_free(&filtergraphs[i]->graph);
435         for (j = 0; j < filtergraphs[i]->nb_inputs; j++) {
436             av_freep(&filtergraphs[i]->inputs[j]->name);
437             av_freep(&filtergraphs[i]->inputs[j]);
438         }
439         av_freep(&filtergraphs[i]->inputs);
440         for (j = 0; j < filtergraphs[i]->nb_outputs; j++) {
441             av_freep(&filtergraphs[i]->outputs[j]->name);
442             av_freep(&filtergraphs[i]->outputs[j]);
443         }
444         av_freep(&filtergraphs[i]->outputs);
445         av_freep(&filtergraphs[i]);
446     }
447     av_freep(&filtergraphs);
448
449     av_freep(&subtitle_out);
450
451     /* close files */
452     for (i = 0; i < nb_output_files; i++) {
453         AVFormatContext *s = output_files[i]->ctx;
454         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
455             avio_close(s->pb);
456         avformat_free_context(s);
457         av_dict_free(&output_files[i]->opts);
458         av_freep(&output_files[i]);
459     }
460     for (i = 0; i < nb_output_streams; i++) {
461         AVBitStreamFilterContext *bsfc = output_streams[i]->bitstream_filters;
462         while (bsfc) {
463             AVBitStreamFilterContext *next = bsfc->next;
464             av_bitstream_filter_close(bsfc);
465             bsfc = next;
466         }
467         output_streams[i]->bitstream_filters = NULL;
468         avcodec_free_frame(&output_streams[i]->filtered_frame);
469
470         av_freep(&output_streams[i]->forced_keyframes);
471         av_expr_free(output_streams[i]->forced_keyframes_pexpr);
472         av_freep(&output_streams[i]->avfilter);
473         av_freep(&output_streams[i]->logfile_prefix);
474         av_freep(&output_streams[i]);
475     }
476     for (i = 0; i < nb_input_files; i++) {
477         avformat_close_input(&input_files[i]->ctx);
478         av_freep(&input_files[i]);
479     }
480     for (i = 0; i < nb_input_streams; i++) {
481         av_frame_free(&input_streams[i]->decoded_frame);
482         av_frame_free(&input_streams[i]->filter_frame);
483         av_dict_free(&input_streams[i]->opts);
484         avsubtitle_free(&input_streams[i]->prev_sub.subtitle);
485         av_frame_free(&input_streams[i]->sub2video.frame);
486         av_freep(&input_streams[i]->filters);
487         av_freep(&input_streams[i]);
488     }
489
490     if (vstats_file)
491         fclose(vstats_file);
492     av_free(vstats_filename);
493
494     av_freep(&input_streams);
495     av_freep(&input_files);
496     av_freep(&output_streams);
497     av_freep(&output_files);
498
499     uninit_opts();
500
501     avfilter_uninit();
502     avformat_network_deinit();
503
504     if (received_sigterm) {
505         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
506                (int) received_sigterm);
507     }
508 }
509
510 void assert_avoptions(AVDictionary *m)
511 {
512     AVDictionaryEntry *t;
513     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
514         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
515         exit(1);
516     }
517 }
518
519 static void abort_codec_experimental(AVCodec *c, int encoder)
520 {
521     exit(1);
522 }
523
524 static void update_benchmark(const char *fmt, ...)
525 {
526     if (do_benchmark_all) {
527         int64_t t = getutime();
528         va_list va;
529         char buf[1024];
530
531         if (fmt) {
532             va_start(va, fmt);
533             vsnprintf(buf, sizeof(buf), fmt, va);
534             va_end(va);
535             printf("bench: %8"PRIu64" %s \n", t - current_time, buf);
536         }
537         current_time = t;
538     }
539 }
540
541 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
542 {
543     AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
544     AVCodecContext          *avctx = ost->st->codec;
545     int ret;
546
547     if ((avctx->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
548         (avctx->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
549         pkt->pts = pkt->dts = AV_NOPTS_VALUE;
550
551     if ((avctx->codec_type == AVMEDIA_TYPE_AUDIO || avctx->codec_type == AVMEDIA_TYPE_VIDEO) && pkt->dts != AV_NOPTS_VALUE) {
552         int64_t max = ost->st->cur_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
553         if (ost->st->cur_dts && ost->st->cur_dts != AV_NOPTS_VALUE &&  max > pkt->dts) {
554             av_log(s, max - pkt->dts > 2 || avctx->codec_type == AVMEDIA_TYPE_VIDEO ? AV_LOG_WARNING : AV_LOG_DEBUG,
555                    "st:%d PTS: %"PRId64" DTS: %"PRId64" < %"PRId64" invalid, clipping\n", pkt->stream_index, pkt->pts, pkt->dts, max);
556             if(pkt->pts >= pkt->dts)
557                 pkt->pts = FFMAX(pkt->pts, max);
558             pkt->dts = max;
559         }
560     }
561
562     /*
563      * Audio encoders may split the packets --  #frames in != #packets out.
564      * But there is no reordering, so we can limit the number of output packets
565      * by simply dropping them here.
566      * Counting encoded video frames needs to be done separately because of
567      * reordering, see do_video_out()
568      */
569     if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
570         if (ost->frame_number >= ost->max_frames) {
571             av_free_packet(pkt);
572             return;
573         }
574         ost->frame_number++;
575     }
576
577     while (bsfc) {
578         AVPacket new_pkt = *pkt;
579         int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
580                                            &new_pkt.data, &new_pkt.size,
581                                            pkt->data, pkt->size,
582                                            pkt->flags & AV_PKT_FLAG_KEY);
583         if(a == 0 && new_pkt.data != pkt->data && new_pkt.destruct) {
584             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
585             if(t) {
586                 memcpy(t, new_pkt.data, new_pkt.size);
587                 memset(t + new_pkt.size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
588                 new_pkt.data = t;
589                 new_pkt.buf = NULL;
590                 a = 1;
591             } else
592                 a = AVERROR(ENOMEM);
593         }
594         if (a > 0) {
595             av_free_packet(pkt);
596             new_pkt.buf = av_buffer_create(new_pkt.data, new_pkt.size,
597                                            av_buffer_default_free, NULL, 0);
598             if (!new_pkt.buf)
599                 exit(1);
600         } else if (a < 0) {
601             av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
602                    bsfc->filter->name, pkt->stream_index,
603                    avctx->codec ? avctx->codec->name : "copy");
604             print_error("", a);
605             if (exit_on_error)
606                 exit(1);
607         }
608         *pkt = new_pkt;
609
610         bsfc = bsfc->next;
611     }
612
613     pkt->stream_index = ost->index;
614
615     if (debug_ts) {
616         av_log(NULL, AV_LOG_INFO, "muxer <- type:%s "
617                 "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s size:%d\n",
618                 av_get_media_type_string(ost->st->codec->codec_type),
619                 av_ts2str(pkt->pts), av_ts2timestr(pkt->pts, &ost->st->time_base),
620                 av_ts2str(pkt->dts), av_ts2timestr(pkt->dts, &ost->st->time_base),
621                 pkt->size
622               );
623     }
624
625     ret = av_interleaved_write_frame(s, pkt);
626     if (ret < 0) {
627         print_error("av_interleaved_write_frame()", ret);
628         exit(1);
629     }
630 }
631
632 static void close_output_stream(OutputStream *ost)
633 {
634     OutputFile *of = output_files[ost->file_index];
635
636     ost->finished = 1;
637     if (of->shortest) {
638         int64_t end = av_rescale_q(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, AV_TIME_BASE_Q);
639         of->recording_time = FFMIN(of->recording_time, end);
640     }
641 }
642
643 static int check_recording_time(OutputStream *ost)
644 {
645     OutputFile *of = output_files[ost->file_index];
646
647     if (of->recording_time != INT64_MAX &&
648         av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
649                       AV_TIME_BASE_Q) >= 0) {
650         close_output_stream(ost);
651         return 0;
652     }
653     return 1;
654 }
655
656 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
657                          AVFrame *frame)
658 {
659     AVCodecContext *enc = ost->st->codec;
660     AVPacket pkt;
661     int got_packet = 0;
662
663     av_init_packet(&pkt);
664     pkt.data = NULL;
665     pkt.size = 0;
666
667     if (!check_recording_time(ost))
668         return;
669
670     if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
671         frame->pts = ost->sync_opts;
672     ost->sync_opts = frame->pts + frame->nb_samples;
673
674     av_assert0(pkt.size || !pkt.data);
675     update_benchmark(NULL);
676     if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
677         av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
678         exit(1);
679     }
680     update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
681
682     if (got_packet) {
683         if (pkt.pts != AV_NOPTS_VALUE)
684             pkt.pts      = av_rescale_q(pkt.pts,      enc->time_base, ost->st->time_base);
685         if (pkt.dts != AV_NOPTS_VALUE)
686             pkt.dts      = av_rescale_q(pkt.dts,      enc->time_base, ost->st->time_base);
687         if (pkt.duration > 0)
688             pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
689
690         if (debug_ts) {
691             av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
692                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
693                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
694                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
695         }
696
697         audio_size += pkt.size;
698         write_frame(s, &pkt, ost);
699
700         av_free_packet(&pkt);
701     }
702 }
703
704 static void do_subtitle_out(AVFormatContext *s,
705                             OutputStream *ost,
706                             InputStream *ist,
707                             AVSubtitle *sub)
708 {
709     int subtitle_out_max_size = 1024 * 1024;
710     int subtitle_out_size, nb, i;
711     AVCodecContext *enc;
712     AVPacket pkt;
713     int64_t pts;
714
715     if (sub->pts == AV_NOPTS_VALUE) {
716         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
717         if (exit_on_error)
718             exit(1);
719         return;
720     }
721
722     enc = ost->st->codec;
723
724     if (!subtitle_out) {
725         subtitle_out = av_malloc(subtitle_out_max_size);
726     }
727
728     /* Note: DVB subtitle need one packet to draw them and one other
729        packet to clear them */
730     /* XXX: signal it in the codec context ? */
731     if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE)
732         nb = 2;
733     else
734         nb = 1;
735
736     /* shift timestamp to honor -ss and make check_recording_time() work with -t */
737     pts = sub->pts - output_files[ost->file_index]->start_time;
738     for (i = 0; i < nb; i++) {
739         ost->sync_opts = av_rescale_q(pts, AV_TIME_BASE_Q, enc->time_base);
740         if (!check_recording_time(ost))
741             return;
742
743         sub->pts = pts;
744         // start_display_time is required to be 0
745         sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
746         sub->end_display_time  -= sub->start_display_time;
747         sub->start_display_time = 0;
748         if (i == 1)
749             sub->num_rects = 0;
750         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
751                                                     subtitle_out_max_size, sub);
752         if (subtitle_out_size < 0) {
753             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
754             exit(1);
755         }
756
757         av_init_packet(&pkt);
758         pkt.data = subtitle_out;
759         pkt.size = subtitle_out_size;
760         pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
761         pkt.duration = av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->st->time_base);
762         if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
763             /* XXX: the pts correction is handled here. Maybe handling
764                it in the codec would be better */
765             if (i == 0)
766                 pkt.pts += 90 * sub->start_display_time;
767             else
768                 pkt.pts += 90 * sub->end_display_time;
769         }
770         subtitle_size += pkt.size;
771         write_frame(s, &pkt, ost);
772     }
773 }
774
775 static void do_video_out(AVFormatContext *s,
776                          OutputStream *ost,
777                          AVFrame *in_picture)
778 {
779     int ret, format_video_sync;
780     AVPacket pkt;
781     AVCodecContext *enc = ost->st->codec;
782     int nb_frames, i;
783     double sync_ipts, delta;
784     double duration = 0;
785     int frame_size = 0;
786     InputStream *ist = NULL;
787
788     if (ost->source_index >= 0)
789         ist = input_streams[ost->source_index];
790
791     if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
792         duration = 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base));
793
794     sync_ipts = in_picture->pts;
795     delta = sync_ipts - ost->sync_opts + duration;
796
797     /* by default, we output a single frame */
798     nb_frames = 1;
799
800     format_video_sync = video_sync_method;
801     if (format_video_sync == VSYNC_AUTO)
802         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : VSYNC_CFR;
803
804     switch (format_video_sync) {
805     case VSYNC_CFR:
806         // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
807         if (delta < -1.1)
808             nb_frames = 0;
809         else if (delta > 1.1)
810             nb_frames = lrintf(delta);
811         break;
812     case VSYNC_VFR:
813         if (delta <= -0.6)
814             nb_frames = 0;
815         else if (delta > 0.6)
816             ost->sync_opts = lrint(sync_ipts);
817         break;
818     case VSYNC_DROP:
819     case VSYNC_PASSTHROUGH:
820         ost->sync_opts = lrint(sync_ipts);
821         break;
822     default:
823         av_assert0(0);
824     }
825
826     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
827     if (nb_frames == 0) {
828         nb_frames_drop++;
829         av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
830         return;
831     } else if (nb_frames > 1) {
832         if (nb_frames > dts_error_threshold * 30) {
833             av_log(NULL, AV_LOG_ERROR, "%d frame duplication too large, skipping\n", nb_frames - 1);
834             nb_frames_drop++;
835             return;
836         }
837         nb_frames_dup += nb_frames - 1;
838         av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
839     }
840
841   /* duplicates frame if needed */
842   for (i = 0; i < nb_frames; i++) {
843     av_init_packet(&pkt);
844     pkt.data = NULL;
845     pkt.size = 0;
846
847     in_picture->pts = ost->sync_opts;
848
849     if (!check_recording_time(ost))
850         return;
851
852     if (s->oformat->flags & AVFMT_RAWPICTURE &&
853         enc->codec->id == AV_CODEC_ID_RAWVIDEO) {
854         /* raw pictures are written as AVPicture structure to
855            avoid any copies. We support temporarily the older
856            method. */
857         enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
858         enc->coded_frame->top_field_first  = in_picture->top_field_first;
859         if (enc->coded_frame->interlaced_frame)
860             enc->field_order = enc->coded_frame->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
861         else
862             enc->field_order = AV_FIELD_PROGRESSIVE;
863         pkt.data   = (uint8_t *)in_picture;
864         pkt.size   =  sizeof(AVPicture);
865         pkt.pts    = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
866         pkt.flags |= AV_PKT_FLAG_KEY;
867
868         video_size += pkt.size;
869         write_frame(s, &pkt, ost);
870     } else {
871         int got_packet, forced_keyframe = 0;
872         double pts_time;
873
874         if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME) &&
875             ost->top_field_first >= 0)
876             in_picture->top_field_first = !!ost->top_field_first;
877
878         if (in_picture->interlaced_frame) {
879             if (enc->codec->id == AV_CODEC_ID_MJPEG)
880                 enc->field_order = in_picture->top_field_first ? AV_FIELD_TT:AV_FIELD_BB;
881             else
882                 enc->field_order = in_picture->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
883         } else
884             enc->field_order = AV_FIELD_PROGRESSIVE;
885
886         in_picture->quality = ost->st->codec->global_quality;
887         if (!enc->me_threshold)
888             in_picture->pict_type = 0;
889
890         pts_time = in_picture->pts != AV_NOPTS_VALUE ?
891             in_picture->pts * av_q2d(enc->time_base) : NAN;
892         if (ost->forced_kf_index < ost->forced_kf_count &&
893             in_picture->pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
894             ost->forced_kf_index++;
895             forced_keyframe = 1;
896         } else if (ost->forced_keyframes_pexpr) {
897             double res;
898             ost->forced_keyframes_expr_const_values[FKF_T] = pts_time;
899             res = av_expr_eval(ost->forced_keyframes_pexpr,
900                                ost->forced_keyframes_expr_const_values, NULL);
901             av_dlog(NULL, "force_key_frame: n:%f n_forced:%f prev_forced_n:%f t:%f prev_forced_t:%f -> res:%f\n",
902                     ost->forced_keyframes_expr_const_values[FKF_N],
903                     ost->forced_keyframes_expr_const_values[FKF_N_FORCED],
904                     ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N],
905                     ost->forced_keyframes_expr_const_values[FKF_T],
906                     ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T],
907                     res);
908             if (res) {
909                 forced_keyframe = 1;
910                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] =
911                     ost->forced_keyframes_expr_const_values[FKF_N];
912                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] =
913                     ost->forced_keyframes_expr_const_values[FKF_T];
914                 ost->forced_keyframes_expr_const_values[FKF_N_FORCED] += 1;
915             }
916
917             ost->forced_keyframes_expr_const_values[FKF_N] += 1;
918         }
919         if (forced_keyframe) {
920             in_picture->pict_type = AV_PICTURE_TYPE_I;
921             av_log(NULL, AV_LOG_DEBUG, "Forced keyframe at time %f\n", pts_time);
922         }
923
924         update_benchmark(NULL);
925         ret = avcodec_encode_video2(enc, &pkt, in_picture, &got_packet);
926         update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
927         if (ret < 0) {
928             av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
929             exit(1);
930         }
931
932         if (got_packet) {
933             if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
934                 pkt.pts = ost->sync_opts;
935
936             if (pkt.pts != AV_NOPTS_VALUE)
937                 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
938             if (pkt.dts != AV_NOPTS_VALUE)
939                 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
940
941             if (debug_ts) {
942                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
943                     "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
944                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
945                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
946             }
947
948             frame_size = pkt.size;
949             video_size += pkt.size;
950             write_frame(s, &pkt, ost);
951             av_free_packet(&pkt);
952
953             /* if two pass, output log */
954             if (ost->logfile && enc->stats_out) {
955                 fprintf(ost->logfile, "%s", enc->stats_out);
956             }
957         }
958     }
959     ost->sync_opts++;
960     /*
961      * For video, number of frames in == number of packets out.
962      * But there may be reordering, so we can't throw away frames on encoder
963      * flush, we need to limit them here, before they go into encoder.
964      */
965     ost->frame_number++;
966   }
967
968     if (vstats_filename && frame_size)
969         do_video_stats(ost, frame_size);
970 }
971
972 static double psnr(double d)
973 {
974     return -10.0 * log(d) / log(10.0);
975 }
976
977 static void do_video_stats(OutputStream *ost, int frame_size)
978 {
979     AVCodecContext *enc;
980     int frame_number;
981     double ti1, bitrate, avg_bitrate;
982
983     /* this is executed just the first time do_video_stats is called */
984     if (!vstats_file) {
985         vstats_file = fopen(vstats_filename, "w");
986         if (!vstats_file) {
987             perror("fopen");
988             exit(1);
989         }
990     }
991
992     enc = ost->st->codec;
993     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
994         frame_number = ost->st->nb_frames;
995         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
996         if (enc->flags&CODEC_FLAG_PSNR)
997             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
998
999         fprintf(vstats_file,"f_size= %6d ", frame_size);
1000         /* compute pts value */
1001         ti1 = ost->st->pts.val * av_q2d(enc->time_base);
1002         if (ti1 < 0.01)
1003             ti1 = 0.01;
1004
1005         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1006         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1007         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1008                (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1009         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1010     }
1011 }
1012
1013 /**
1014  * Get and encode new output from any of the filtergraphs, without causing
1015  * activity.
1016  *
1017  * @return  0 for success, <0 for severe errors
1018  */
1019 static int reap_filters(void)
1020 {
1021     AVFrame *filtered_frame = NULL;
1022     int i;
1023     int64_t frame_pts;
1024
1025     /* Reap all buffers present in the buffer sinks */
1026     for (i = 0; i < nb_output_streams; i++) {
1027         OutputStream *ost = output_streams[i];
1028         OutputFile    *of = output_files[ost->file_index];
1029         int ret = 0;
1030
1031         if (!ost->filter)
1032             continue;
1033
1034         if (!ost->filtered_frame && !(ost->filtered_frame = avcodec_alloc_frame())) {
1035             return AVERROR(ENOMEM);
1036         } else
1037             avcodec_get_frame_defaults(ost->filtered_frame);
1038         filtered_frame = ost->filtered_frame;
1039
1040         while (1) {
1041             ret = av_buffersink_get_frame_flags(ost->filter->filter, filtered_frame,
1042                                                AV_BUFFERSINK_FLAG_NO_REQUEST);
1043             if (ret < 0) {
1044                 if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
1045                     char buf[256];
1046                     av_strerror(ret, buf, sizeof(buf));
1047                     av_log(NULL, AV_LOG_WARNING,
1048                            "Error in av_buffersink_get_buffer_ref(): %s\n", buf);
1049                 }
1050                 break;
1051             }
1052             frame_pts = AV_NOPTS_VALUE;
1053             if (filtered_frame->pts != AV_NOPTS_VALUE) {
1054                 filtered_frame->pts = frame_pts = av_rescale_q(filtered_frame->pts,
1055                                                 ost->filter->filter->inputs[0]->time_base,
1056                                                 ost->st->codec->time_base) -
1057                                     av_rescale_q(of->start_time,
1058                                                 AV_TIME_BASE_Q,
1059                                                 ost->st->codec->time_base);
1060
1061                 if (of->start_time && filtered_frame->pts < 0) {
1062                     av_frame_unref(filtered_frame);
1063                     continue;
1064                 }
1065             }
1066             //if (ost->source_index >= 0)
1067             //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
1068
1069
1070             switch (ost->filter->filter->inputs[0]->type) {
1071             case AVMEDIA_TYPE_VIDEO:
1072                 filtered_frame->pts = frame_pts;
1073                 if (!ost->frame_aspect_ratio)
1074                     ost->st->codec->sample_aspect_ratio = filtered_frame->sample_aspect_ratio;
1075
1076                 do_video_out(of->ctx, ost, filtered_frame);
1077                 break;
1078             case AVMEDIA_TYPE_AUDIO:
1079                 filtered_frame->pts = frame_pts;
1080                 if (!(ost->st->codec->codec->capabilities & CODEC_CAP_PARAM_CHANGE) &&
1081                     ost->st->codec->channels != av_frame_get_channels(filtered_frame)) {
1082                     av_log(NULL, AV_LOG_ERROR,
1083                            "Audio filter graph output is not normalized and encoder does not support parameter changes\n");
1084                     break;
1085                 }
1086                 do_audio_out(of->ctx, ost, filtered_frame);
1087                 break;
1088             default:
1089                 // TODO support subtitle filters
1090                 av_assert0(0);
1091             }
1092
1093             av_frame_unref(filtered_frame);
1094         }
1095     }
1096
1097     return 0;
1098 }
1099
1100 static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
1101 {
1102     char buf[1024];
1103     AVBPrint buf_script;
1104     OutputStream *ost;
1105     AVFormatContext *oc;
1106     int64_t total_size;
1107     AVCodecContext *enc;
1108     int frame_number, vid, i;
1109     double bitrate;
1110     int64_t pts = INT64_MIN;
1111     static int64_t last_time = -1;
1112     static int qp_histogram[52];
1113     int hours, mins, secs, us;
1114
1115     if (!print_stats && !is_last_report && !progress_avio)
1116         return;
1117
1118     if (!is_last_report) {
1119         if (last_time == -1) {
1120             last_time = cur_time;
1121             return;
1122         }
1123         if ((cur_time - last_time) < 500000)
1124             return;
1125         last_time = cur_time;
1126     }
1127
1128
1129     oc = output_files[0]->ctx;
1130
1131     total_size = avio_size(oc->pb);
1132     if (total_size <= 0) // FIXME improve avio_size() so it works with non seekable output too
1133         total_size = avio_tell(oc->pb);
1134
1135     buf[0] = '\0';
1136     vid = 0;
1137     av_bprint_init(&buf_script, 0, 1);
1138     for (i = 0; i < nb_output_streams; i++) {
1139         float q = -1;
1140         ost = output_streams[i];
1141         enc = ost->st->codec;
1142         if (!ost->stream_copy && enc->coded_frame)
1143             q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
1144         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1145             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1146             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1147                        ost->file_index, ost->index, q);
1148         }
1149         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1150             float fps, t = (cur_time-timer_start) / 1000000.0;
1151
1152             frame_number = ost->frame_number;
1153             fps = t > 1 ? frame_number / t : 0;
1154             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
1155                      frame_number, fps < 9.95, fps, q);
1156             av_bprintf(&buf_script, "frame=%d\n", frame_number);
1157             av_bprintf(&buf_script, "fps=%.1f\n", fps);
1158             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1159                        ost->file_index, ost->index, q);
1160             if (is_last_report)
1161                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1162             if (qp_hist) {
1163                 int j;
1164                 int qp = lrintf(q);
1165                 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
1166                     qp_histogram[qp]++;
1167                 for (j = 0; j < 32; j++)
1168                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log2(qp_histogram[j] + 1)));
1169             }
1170             if ((enc->flags&CODEC_FLAG_PSNR) && (enc->coded_frame || is_last_report)) {
1171                 int j;
1172                 double error, error_sum = 0;
1173                 double scale, scale_sum = 0;
1174                 double p;
1175                 char type[3] = { 'Y','U','V' };
1176                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1177                 for (j = 0; j < 3; j++) {
1178                     if (is_last_report) {
1179                         error = enc->error[j];
1180                         scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
1181                     } else {
1182                         error = enc->coded_frame->error[j];
1183                         scale = enc->width * enc->height * 255.0 * 255.0;
1184                     }
1185                     if (j)
1186                         scale /= 4;
1187                     error_sum += error;
1188                     scale_sum += scale;
1189                     p = psnr(error / scale);
1190                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], p);
1191                     av_bprintf(&buf_script, "stream_%d_%d_psnr_%c=%2.2f\n",
1192                                ost->file_index, ost->index, type[j] | 32, p);
1193                 }
1194                 p = psnr(error_sum / scale_sum);
1195                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
1196                 av_bprintf(&buf_script, "stream_%d_%d_psnr_all=%2.2f\n",
1197                            ost->file_index, ost->index, p);
1198             }
1199             vid = 1;
1200         }
1201         /* compute min output value */
1202         if ((is_last_report || !ost->finished) && ost->st->pts.val != AV_NOPTS_VALUE)
1203             pts = FFMAX(pts, av_rescale_q(ost->st->pts.val,
1204                                           ost->st->time_base, AV_TIME_BASE_Q));
1205     }
1206
1207     secs = pts / AV_TIME_BASE;
1208     us = pts % AV_TIME_BASE;
1209     mins = secs / 60;
1210     secs %= 60;
1211     hours = mins / 60;
1212     mins %= 60;
1213
1214     bitrate = pts && total_size >= 0 ? total_size * 8 / (pts / 1000.0) : -1;
1215
1216     if (total_size < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1217                                  "size=N/A time=");
1218     else                snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1219                                  "size=%8.0fkB time=", total_size / 1024.0);
1220     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1221              "%02d:%02d:%02d.%02d ", hours, mins, secs,
1222              (100 * us) / AV_TIME_BASE);
1223     if (bitrate < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1224                               "bitrate=N/A");
1225     else             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1226                               "bitrate=%6.1fkbits/s", bitrate);
1227     if (total_size < 0) av_bprintf(&buf_script, "total_size=N/A\n");
1228     else                av_bprintf(&buf_script, "total_size=%"PRId64"\n", total_size);
1229     av_bprintf(&buf_script, "out_time_ms=%"PRId64"\n", pts);
1230     av_bprintf(&buf_script, "out_time=%02d:%02d:%02d.%06d\n",
1231                hours, mins, secs, us);
1232
1233     if (nb_frames_dup || nb_frames_drop)
1234         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1235                 nb_frames_dup, nb_frames_drop);
1236     av_bprintf(&buf_script, "dup_frames=%d\n", nb_frames_dup);
1237     av_bprintf(&buf_script, "drop_frames=%d\n", nb_frames_drop);
1238
1239     if (print_stats || is_last_report) {
1240         if (print_stats==1 && AV_LOG_INFO > av_log_get_level()) {
1241             fprintf(stderr, "%s    \r", buf);
1242         } else
1243             av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
1244
1245     fflush(stderr);
1246     }
1247
1248     if (progress_avio) {
1249         av_bprintf(&buf_script, "progress=%s\n",
1250                    is_last_report ? "end" : "continue");
1251         avio_write(progress_avio, buf_script.str,
1252                    FFMIN(buf_script.len, buf_script.size - 1));
1253         avio_flush(progress_avio);
1254         av_bprint_finalize(&buf_script, NULL);
1255         if (is_last_report) {
1256             avio_close(progress_avio);
1257             progress_avio = NULL;
1258         }
1259     }
1260
1261     if (is_last_report) {
1262         int64_t raw= audio_size + video_size + subtitle_size + extra_size;
1263         av_log(NULL, AV_LOG_INFO, "\n");
1264         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB subtitle:%1.0f global headers:%1.0fkB muxing overhead %f%%\n",
1265                video_size / 1024.0,
1266                audio_size / 1024.0,
1267                subtitle_size / 1024.0,
1268                extra_size / 1024.0,
1269                100.0 * (total_size - raw) / raw
1270         );
1271         if(video_size + audio_size + subtitle_size + extra_size == 0){
1272             av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
1273         }
1274     }
1275 }
1276
1277 static void flush_encoders(void)
1278 {
1279     int i, ret;
1280
1281     for (i = 0; i < nb_output_streams; i++) {
1282         OutputStream   *ost = output_streams[i];
1283         AVCodecContext *enc = ost->st->codec;
1284         AVFormatContext *os = output_files[ost->file_index]->ctx;
1285         int stop_encoding = 0;
1286
1287         if (!ost->encoding_needed)
1288             continue;
1289
1290         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
1291             continue;
1292         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == AV_CODEC_ID_RAWVIDEO)
1293             continue;
1294
1295         for (;;) {
1296             int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
1297             const char *desc;
1298             int64_t *size;
1299
1300             switch (ost->st->codec->codec_type) {
1301             case AVMEDIA_TYPE_AUDIO:
1302                 encode = avcodec_encode_audio2;
1303                 desc   = "Audio";
1304                 size   = &audio_size;
1305                 break;
1306             case AVMEDIA_TYPE_VIDEO:
1307                 encode = avcodec_encode_video2;
1308                 desc   = "Video";
1309                 size   = &video_size;
1310                 break;
1311             default:
1312                 stop_encoding = 1;
1313             }
1314
1315             if (encode) {
1316                 AVPacket pkt;
1317                 int got_packet;
1318                 av_init_packet(&pkt);
1319                 pkt.data = NULL;
1320                 pkt.size = 0;
1321
1322                 update_benchmark(NULL);
1323                 ret = encode(enc, &pkt, NULL, &got_packet);
1324                 update_benchmark("flush %s %d.%d", desc, ost->file_index, ost->index);
1325                 if (ret < 0) {
1326                     av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
1327                     exit(1);
1328                 }
1329                 *size += pkt.size;
1330                 if (ost->logfile && enc->stats_out) {
1331                     fprintf(ost->logfile, "%s", enc->stats_out);
1332                 }
1333                 if (!got_packet) {
1334                     stop_encoding = 1;
1335                     break;
1336                 }
1337                 if (pkt.pts != AV_NOPTS_VALUE)
1338                     pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
1339                 if (pkt.dts != AV_NOPTS_VALUE)
1340                     pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
1341                 if (pkt.duration > 0)
1342                     pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
1343                 write_frame(os, &pkt, ost);
1344                 if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && vstats_filename) {
1345                     do_video_stats(ost, pkt.size);
1346                 }
1347             }
1348
1349             if (stop_encoding)
1350                 break;
1351         }
1352     }
1353 }
1354
1355 /*
1356  * Check whether a packet from ist should be written into ost at this time
1357  */
1358 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1359 {
1360     OutputFile *of = output_files[ost->file_index];
1361     int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
1362
1363     if (ost->source_index != ist_index)
1364         return 0;
1365
1366     if (of->start_time && ist->pts < of->start_time)
1367         return 0;
1368
1369     return 1;
1370 }
1371
1372 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1373 {
1374     OutputFile *of = output_files[ost->file_index];
1375     int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1376     AVPicture pict;
1377     AVPacket opkt;
1378
1379     av_init_packet(&opkt);
1380
1381     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1382         !ost->copy_initial_nonkeyframes)
1383         return;
1384
1385     if (!ost->frame_number && ist->pts < of->start_time &&
1386         !ost->copy_prior_start)
1387         return;
1388
1389     if (of->recording_time != INT64_MAX &&
1390         ist->pts >= of->recording_time + of->start_time) {
1391         close_output_stream(ost);
1392         return;
1393     }
1394
1395     /* force the input stream PTS */
1396     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1397         audio_size += pkt->size;
1398     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1399         video_size += pkt->size;
1400         ost->sync_opts++;
1401     } else if (ost->st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
1402         subtitle_size += pkt->size;
1403     }
1404
1405     if (pkt->pts != AV_NOPTS_VALUE)
1406         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1407     else
1408         opkt.pts = AV_NOPTS_VALUE;
1409
1410     if (pkt->dts == AV_NOPTS_VALUE)
1411         opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
1412     else
1413         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1414     opkt.dts -= ost_tb_start_time;
1415
1416     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && pkt->dts != AV_NOPTS_VALUE) {
1417         int duration = av_get_audio_frame_duration(ist->st->codec, pkt->size);
1418         if(!duration)
1419             duration = ist->st->codec->frame_size;
1420         opkt.dts = opkt.pts = av_rescale_delta(ist->st->time_base, pkt->dts,
1421                                                (AVRational){1, ist->st->codec->sample_rate}, duration, &ist->filter_in_rescale_delta_last,
1422                                                ost->st->time_base) - ost_tb_start_time;
1423     }
1424
1425     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1426     opkt.flags    = pkt->flags;
1427
1428     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1429     if (  ost->st->codec->codec_id != AV_CODEC_ID_H264
1430        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG1VIDEO
1431        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG2VIDEO
1432        && ost->st->codec->codec_id != AV_CODEC_ID_VC1
1433        ) {
1434         if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY)) {
1435             opkt.buf = av_buffer_create(opkt.data, opkt.size, av_buffer_default_free, NULL, 0);
1436             if (!opkt.buf)
1437                 exit(1);
1438         }
1439     } else {
1440         opkt.data = pkt->data;
1441         opkt.size = pkt->size;
1442     }
1443
1444     if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (of->ctx->oformat->flags & AVFMT_RAWPICTURE)) {
1445         /* store AVPicture in AVPacket, as expected by the output format */
1446         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1447         opkt.data = (uint8_t *)&pict;
1448         opkt.size = sizeof(AVPicture);
1449         opkt.flags |= AV_PKT_FLAG_KEY;
1450     }
1451
1452     write_frame(of->ctx, &opkt, ost);
1453     ost->st->codec->frame_number++;
1454 }
1455
1456 static void rate_emu_sleep(InputStream *ist)
1457 {
1458     if (input_files[ist->file_index]->rate_emu) {
1459         int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
1460         int64_t now = av_gettime() - ist->start;
1461         if (pts > now)
1462             av_usleep(pts - now);
1463     }
1464 }
1465
1466 int guess_input_channel_layout(InputStream *ist)
1467 {
1468     AVCodecContext *dec = ist->st->codec;
1469
1470     if (!dec->channel_layout) {
1471         char layout_name[256];
1472
1473         if (dec->channels > ist->guess_layout_max)
1474             return 0;
1475         dec->channel_layout = av_get_default_channel_layout(dec->channels);
1476         if (!dec->channel_layout)
1477             return 0;
1478         av_get_channel_layout_string(layout_name, sizeof(layout_name),
1479                                      dec->channels, dec->channel_layout);
1480         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for  Input Stream "
1481                "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
1482     }
1483     return 1;
1484 }
1485
1486 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1487 {
1488     AVFrame *decoded_frame, *f;
1489     AVCodecContext *avctx = ist->st->codec;
1490     int i, ret, err = 0, resample_changed;
1491     AVRational decoded_frame_tb;
1492
1493     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1494         return AVERROR(ENOMEM);
1495     if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1496         return AVERROR(ENOMEM);
1497     decoded_frame = ist->decoded_frame;
1498
1499     update_benchmark(NULL);
1500     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1501     update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
1502
1503     if (ret >= 0 && avctx->sample_rate <= 0) {
1504         av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
1505         ret = AVERROR_INVALIDDATA;
1506     }
1507
1508     if (!*got_output || ret < 0) {
1509         if (!pkt->size) {
1510             for (i = 0; i < ist->nb_filters; i++)
1511 #if 1
1512                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1513 #else
1514                 av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
1515 #endif
1516         }
1517         return ret;
1518     }
1519
1520 #if 1
1521     /* increment next_dts to use for the case where the input stream does not
1522        have timestamps or there are multiple frames in the packet */
1523     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1524                      avctx->sample_rate;
1525     ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1526                      avctx->sample_rate;
1527 #endif
1528
1529     rate_emu_sleep(ist);
1530
1531     resample_changed = ist->resample_sample_fmt     != decoded_frame->format         ||
1532                        ist->resample_channels       != avctx->channels               ||
1533                        ist->resample_channel_layout != decoded_frame->channel_layout ||
1534                        ist->resample_sample_rate    != decoded_frame->sample_rate;
1535     if (resample_changed) {
1536         char layout1[64], layout2[64];
1537
1538         if (!guess_input_channel_layout(ist)) {
1539             av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
1540                    "layout for Input Stream #%d.%d\n", ist->file_index,
1541                    ist->st->index);
1542             exit(1);
1543         }
1544         decoded_frame->channel_layout = avctx->channel_layout;
1545
1546         av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
1547                                      ist->resample_channel_layout);
1548         av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
1549                                      decoded_frame->channel_layout);
1550
1551         av_log(NULL, AV_LOG_INFO,
1552                "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",
1553                ist->file_index, ist->st->index,
1554                ist->resample_sample_rate,  av_get_sample_fmt_name(ist->resample_sample_fmt),
1555                ist->resample_channels, layout1,
1556                decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
1557                avctx->channels, layout2);
1558
1559         ist->resample_sample_fmt     = decoded_frame->format;
1560         ist->resample_sample_rate    = decoded_frame->sample_rate;
1561         ist->resample_channel_layout = decoded_frame->channel_layout;
1562         ist->resample_channels       = avctx->channels;
1563
1564         for (i = 0; i < nb_filtergraphs; i++)
1565             if (ist_in_filtergraph(filtergraphs[i], ist)) {
1566                 FilterGraph *fg = filtergraphs[i];
1567                 int j;
1568                 if (configure_filtergraph(fg) < 0) {
1569                     av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1570                     exit(1);
1571                 }
1572                 for (j = 0; j < fg->nb_outputs; j++) {
1573                     OutputStream *ost = fg->outputs[j]->ost;
1574                     if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
1575                         !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
1576                         av_buffersink_set_frame_size(ost->filter->filter,
1577                                                      ost->st->codec->frame_size);
1578                 }
1579             }
1580     }
1581
1582     /* if the decoder provides a pts, use it instead of the last packet pts.
1583        the decoder could be delaying output by a packet or more. */
1584     if (decoded_frame->pts != AV_NOPTS_VALUE) {
1585         ist->dts = ist->next_dts = ist->pts = ist->next_pts = av_rescale_q(decoded_frame->pts, avctx->time_base, AV_TIME_BASE_Q);
1586         decoded_frame_tb   = avctx->time_base;
1587     } else if (decoded_frame->pkt_pts != AV_NOPTS_VALUE) {
1588         decoded_frame->pts = decoded_frame->pkt_pts;
1589         pkt->pts           = AV_NOPTS_VALUE;
1590         decoded_frame_tb   = ist->st->time_base;
1591     } else if (pkt->pts != AV_NOPTS_VALUE) {
1592         decoded_frame->pts = pkt->pts;
1593         pkt->pts           = AV_NOPTS_VALUE;
1594         decoded_frame_tb   = ist->st->time_base;
1595     }else {
1596         decoded_frame->pts = ist->dts;
1597         decoded_frame_tb   = AV_TIME_BASE_Q;
1598     }
1599     if (decoded_frame->pts != AV_NOPTS_VALUE)
1600         decoded_frame->pts = av_rescale_delta(decoded_frame_tb, decoded_frame->pts,
1601                                               (AVRational){1, ist->st->codec->sample_rate}, decoded_frame->nb_samples, &ist->filter_in_rescale_delta_last,
1602                                               (AVRational){1, ist->st->codec->sample_rate});
1603     for (i = 0; i < ist->nb_filters; i++) {
1604         if (i < ist->nb_filters - 1) {
1605             f = ist->filter_frame;
1606             err = av_frame_ref(f, decoded_frame);
1607             if (err < 0)
1608                 break;
1609         } else
1610             f = decoded_frame;
1611         err = av_buffersrc_add_frame_flags(ist->filters[i]->filter, f,
1612                                      AV_BUFFERSRC_FLAG_PUSH);
1613         if (err < 0)
1614             break;
1615     }
1616     decoded_frame->pts = AV_NOPTS_VALUE;
1617
1618     av_frame_unref(ist->filter_frame);
1619     av_frame_unref(decoded_frame);
1620     return err < 0 ? err : ret;
1621 }
1622
1623 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
1624 {
1625     AVFrame *decoded_frame, *f;
1626     void *buffer_to_free = NULL;
1627     int i, ret = 0, err = 0, resample_changed;
1628     int64_t best_effort_timestamp;
1629     AVRational *frame_sample_aspect;
1630
1631     if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
1632         return AVERROR(ENOMEM);
1633     if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1634         return AVERROR(ENOMEM);
1635     decoded_frame = ist->decoded_frame;
1636     pkt->dts  = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
1637
1638     update_benchmark(NULL);
1639     ret = avcodec_decode_video2(ist->st->codec,
1640                                 decoded_frame, got_output, pkt);
1641     update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
1642     if (!*got_output || ret < 0) {
1643         if (!pkt->size) {
1644             for (i = 0; i < ist->nb_filters; i++)
1645 #if 1
1646                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1647 #else
1648                 av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
1649 #endif
1650         }
1651         return ret;
1652     }
1653
1654     if(ist->top_field_first>=0)
1655         decoded_frame->top_field_first = ist->top_field_first;
1656
1657     best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
1658     if(best_effort_timestamp != AV_NOPTS_VALUE)
1659         ist->next_pts = ist->pts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);
1660
1661     if (debug_ts) {
1662         av_log(NULL, AV_LOG_INFO, "decoder -> ist_index:%d type:video "
1663                 "frame_pts:%s frame_pts_time:%s best_effort_ts:%"PRId64" best_effort_ts_time:%s keyframe:%d frame_type:%d \n",
1664                 ist->st->index, av_ts2str(decoded_frame->pts),
1665                 av_ts2timestr(decoded_frame->pts, &ist->st->time_base),
1666                 best_effort_timestamp,
1667                 av_ts2timestr(best_effort_timestamp, &ist->st->time_base),
1668                 decoded_frame->key_frame, decoded_frame->pict_type);
1669     }
1670
1671     pkt->size = 0;
1672
1673     rate_emu_sleep(ist);
1674
1675     if (ist->st->sample_aspect_ratio.num)
1676         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1677
1678     resample_changed = ist->resample_width   != decoded_frame->width  ||
1679                        ist->resample_height  != decoded_frame->height ||
1680                        ist->resample_pix_fmt != decoded_frame->format;
1681     if (resample_changed) {
1682         av_log(NULL, AV_LOG_INFO,
1683                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1684                ist->file_index, ist->st->index,
1685                ist->resample_width,  ist->resample_height,  av_get_pix_fmt_name(ist->resample_pix_fmt),
1686                decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
1687
1688         ist->resample_width   = decoded_frame->width;
1689         ist->resample_height  = decoded_frame->height;
1690         ist->resample_pix_fmt = decoded_frame->format;
1691
1692         for (i = 0; i < nb_filtergraphs; i++) {
1693             if (ist_in_filtergraph(filtergraphs[i], ist) && ist->reinit_filters &&
1694                 configure_filtergraph(filtergraphs[i]) < 0) {
1695                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1696                 exit(1);
1697             }
1698         }
1699     }
1700
1701     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
1702     for (i = 0; i < ist->nb_filters; i++) {
1703         if (!frame_sample_aspect->num)
1704             *frame_sample_aspect = ist->st->sample_aspect_ratio;
1705
1706         if (i < ist->nb_filters - 1) {
1707             f = ist->filter_frame;
1708             err = av_frame_ref(f, decoded_frame);
1709             if (err < 0)
1710                 break;
1711         } else
1712             f = decoded_frame;
1713         if(av_buffersrc_add_frame_flags(ist->filters[i]->filter, f,
1714                                         AV_BUFFERSRC_FLAG_PUSH)<0) {
1715             av_log(NULL, AV_LOG_FATAL, "Failed to inject frame into filter network\n");
1716             exit(1);
1717         }
1718
1719     }
1720
1721     av_frame_unref(ist->filter_frame);
1722     av_frame_unref(decoded_frame);
1723     av_free(buffer_to_free);
1724     return err < 0 ? err : ret;
1725 }
1726
1727 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1728 {
1729     AVSubtitle subtitle;
1730     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
1731                                           &subtitle, got_output, pkt);
1732     if (ret < 0 || !*got_output) {
1733         if (!pkt->size)
1734             sub2video_flush(ist);
1735         return ret;
1736     }
1737
1738     if (ist->fix_sub_duration) {
1739         if (ist->prev_sub.got_output) {
1740             int end = av_rescale(subtitle.pts - ist->prev_sub.subtitle.pts,
1741                                  1000, AV_TIME_BASE);
1742             if (end < ist->prev_sub.subtitle.end_display_time) {
1743                 av_log(ist->st->codec, AV_LOG_DEBUG,
1744                        "Subtitle duration reduced from %d to %d\n",
1745                        ist->prev_sub.subtitle.end_display_time, end);
1746                 ist->prev_sub.subtitle.end_display_time = end;
1747             }
1748         }
1749         FFSWAP(int,        *got_output, ist->prev_sub.got_output);
1750         FFSWAP(int,        ret,         ist->prev_sub.ret);
1751         FFSWAP(AVSubtitle, subtitle,    ist->prev_sub.subtitle);
1752     }
1753
1754     sub2video_update(ist, &subtitle);
1755
1756     if (!*got_output || !subtitle.num_rects)
1757         return ret;
1758
1759     rate_emu_sleep(ist);
1760
1761     for (i = 0; i < nb_output_streams; i++) {
1762         OutputStream *ost = output_streams[i];
1763
1764         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1765             continue;
1766
1767         do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle);
1768     }
1769
1770     avsubtitle_free(&subtitle);
1771     return ret;
1772 }
1773
1774 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1775 static int output_packet(InputStream *ist, const AVPacket *pkt)
1776 {
1777     int ret = 0, i;
1778     int got_output;
1779
1780     AVPacket avpkt;
1781     if (!ist->saw_first_ts) {
1782         ist->dts = ist->st->avg_frame_rate.num ? - ist->st->codec->has_b_frames * AV_TIME_BASE / av_q2d(ist->st->avg_frame_rate) : 0;
1783         ist->pts = 0;
1784         if (pkt != NULL && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
1785             ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1786             ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
1787         }
1788         ist->saw_first_ts = 1;
1789     }
1790
1791     if (ist->next_dts == AV_NOPTS_VALUE)
1792         ist->next_dts = ist->dts;
1793     if (ist->next_pts == AV_NOPTS_VALUE)
1794         ist->next_pts = ist->pts;
1795
1796     if (pkt == NULL) {
1797         /* EOF handling */
1798         av_init_packet(&avpkt);
1799         avpkt.data = NULL;
1800         avpkt.size = 0;
1801         goto handle_eof;
1802     } else {
1803         avpkt = *pkt;
1804     }
1805
1806     if (pkt->dts != AV_NOPTS_VALUE) {
1807         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1808         if (ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
1809             ist->next_pts = ist->pts = ist->dts;
1810     }
1811
1812     // while we have more to decode or while the decoder did output something on EOF
1813     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
1814         int duration;
1815     handle_eof:
1816
1817         ist->pts = ist->next_pts;
1818         ist->dts = ist->next_dts;
1819
1820         if (avpkt.size && avpkt.size != pkt->size) {
1821             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
1822                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1823             ist->showed_multi_packet_warning = 1;
1824         }
1825
1826         switch (ist->st->codec->codec_type) {
1827         case AVMEDIA_TYPE_AUDIO:
1828             ret = decode_audio    (ist, &avpkt, &got_output);
1829             break;
1830         case AVMEDIA_TYPE_VIDEO:
1831             ret = decode_video    (ist, &avpkt, &got_output);
1832             if (avpkt.duration) {
1833                 duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
1834             } else if(ist->st->codec->time_base.num != 0 && ist->st->codec->time_base.den != 0) {
1835                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1836                 duration = ((int64_t)AV_TIME_BASE *
1837                                 ist->st->codec->time_base.num * ticks) /
1838                                 ist->st->codec->time_base.den;
1839             } else
1840                 duration = 0;
1841
1842             if(ist->dts != AV_NOPTS_VALUE && duration) {
1843                 ist->next_dts += duration;
1844             }else
1845                 ist->next_dts = AV_NOPTS_VALUE;
1846
1847             if (got_output)
1848                 ist->next_pts += duration; //FIXME the duration is not correct in some cases
1849             break;
1850         case AVMEDIA_TYPE_SUBTITLE:
1851             ret = transcode_subtitles(ist, &avpkt, &got_output);
1852             break;
1853         default:
1854             return -1;
1855         }
1856
1857         if (ret < 0)
1858             return ret;
1859
1860         avpkt.dts=
1861         avpkt.pts= AV_NOPTS_VALUE;
1862
1863         // touch data and size only if not EOF
1864         if (pkt) {
1865             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
1866                 ret = avpkt.size;
1867             avpkt.data += ret;
1868             avpkt.size -= ret;
1869         }
1870         if (!got_output) {
1871             continue;
1872         }
1873     }
1874
1875     /* handle stream copy */
1876     if (!ist->decoding_needed) {
1877         rate_emu_sleep(ist);
1878         ist->dts = ist->next_dts;
1879         switch (ist->st->codec->codec_type) {
1880         case AVMEDIA_TYPE_AUDIO:
1881             ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1882                              ist->st->codec->sample_rate;
1883             break;
1884         case AVMEDIA_TYPE_VIDEO:
1885             if (pkt->duration) {
1886                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
1887             } else if(ist->st->codec->time_base.num != 0) {
1888                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
1889                 ist->next_dts += ((int64_t)AV_TIME_BASE *
1890                                   ist->st->codec->time_base.num * ticks) /
1891                                   ist->st->codec->time_base.den;
1892             }
1893             break;
1894         }
1895         ist->pts = ist->dts;
1896         ist->next_pts = ist->next_dts;
1897     }
1898     for (i = 0; pkt && i < nb_output_streams; i++) {
1899         OutputStream *ost = output_streams[i];
1900
1901         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
1902             continue;
1903
1904         do_streamcopy(ist, ost, pkt);
1905     }
1906
1907     return 0;
1908 }
1909
1910 static void print_sdp(void)
1911 {
1912     char sdp[16384];
1913     int i;
1914     AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
1915
1916     if (!avc)
1917         exit(1);
1918     for (i = 0; i < nb_output_files; i++)
1919         avc[i] = output_files[i]->ctx;
1920
1921     av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
1922     printf("SDP:\n%s\n", sdp);
1923     fflush(stdout);
1924     av_freep(&avc);
1925 }
1926
1927 static int init_input_stream(int ist_index, char *error, int error_len)
1928 {
1929     int ret;
1930     InputStream *ist = input_streams[ist_index];
1931
1932     if (ist->decoding_needed) {
1933         AVCodec *codec = ist->dec;
1934         if (!codec) {
1935             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
1936                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
1937             return AVERROR(EINVAL);
1938         }
1939
1940         av_opt_set_int(ist->st->codec, "refcounted_frames", 1, 0);
1941
1942         if (!av_dict_get(ist->opts, "threads", NULL, 0))
1943             av_dict_set(&ist->opts, "threads", "auto", 0);
1944         if ((ret = avcodec_open2(ist->st->codec, codec, &ist->opts)) < 0) {
1945             if (ret == AVERROR_EXPERIMENTAL)
1946                 abort_codec_experimental(codec, 0);
1947             snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
1948                     ist->file_index, ist->st->index);
1949             return ret;
1950         }
1951         assert_avoptions(ist->opts);
1952     }
1953
1954     ist->next_pts = AV_NOPTS_VALUE;
1955     ist->next_dts = AV_NOPTS_VALUE;
1956     ist->is_start = 1;
1957
1958     return 0;
1959 }
1960
1961 static InputStream *get_input_stream(OutputStream *ost)
1962 {
1963     if (ost->source_index >= 0)
1964         return input_streams[ost->source_index];
1965     return NULL;
1966 }
1967
1968 static int compare_int64(const void *a, const void *b)
1969 {
1970     int64_t va = *(int64_t *)a, vb = *(int64_t *)b;
1971     return va < vb ? -1 : va > vb ? +1 : 0;
1972 }
1973
1974 static void parse_forced_key_frames(char *kf, OutputStream *ost,
1975                                     AVCodecContext *avctx)
1976 {
1977     char *p;
1978     int n = 1, i, size, index = 0;
1979     int64_t t, *pts;
1980
1981     for (p = kf; *p; p++)
1982         if (*p == ',')
1983             n++;
1984     size = n;
1985     pts = av_malloc(sizeof(*pts) * size);
1986     if (!pts) {
1987         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
1988         exit(1);
1989     }
1990
1991     p = kf;
1992     for (i = 0; i < n; i++) {
1993         char *next = strchr(p, ',');
1994
1995         if (next)
1996             *next++ = 0;
1997
1998         if (!memcmp(p, "chapters", 8)) {
1999
2000             AVFormatContext *avf = output_files[ost->file_index]->ctx;
2001             int j;
2002
2003             if (avf->nb_chapters > INT_MAX - size ||
2004                 !(pts = av_realloc_f(pts, size += avf->nb_chapters - 1,
2005                                      sizeof(*pts)))) {
2006                 av_log(NULL, AV_LOG_FATAL,
2007                        "Could not allocate forced key frames array.\n");
2008                 exit(1);
2009             }
2010             t = p[8] ? parse_time_or_die("force_key_frames", p + 8, 1) : 0;
2011             t = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
2012
2013             for (j = 0; j < avf->nb_chapters; j++) {
2014                 AVChapter *c = avf->chapters[j];
2015                 av_assert1(index < size);
2016                 pts[index++] = av_rescale_q(c->start, c->time_base,
2017                                             avctx->time_base) + t;
2018             }
2019
2020         } else {
2021
2022             t = parse_time_or_die("force_key_frames", p, 1);
2023             av_assert1(index < size);
2024             pts[index++] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
2025
2026         }
2027
2028         p = next;
2029     }
2030
2031     av_assert0(index == size);
2032     qsort(pts, size, sizeof(*pts), compare_int64);
2033     ost->forced_kf_count = size;
2034     ost->forced_kf_pts   = pts;
2035 }
2036
2037 static void report_new_stream(int input_index, AVPacket *pkt)
2038 {
2039     InputFile *file = input_files[input_index];
2040     AVStream *st = file->ctx->streams[pkt->stream_index];
2041
2042     if (pkt->stream_index < file->nb_streams_warn)
2043         return;
2044     av_log(file->ctx, AV_LOG_WARNING,
2045            "New %s stream %d:%d at pos:%"PRId64" and DTS:%ss\n",
2046            av_get_media_type_string(st->codec->codec_type),
2047            input_index, pkt->stream_index,
2048            pkt->pos, av_ts2timestr(pkt->dts, &st->time_base));
2049     file->nb_streams_warn = pkt->stream_index + 1;
2050 }
2051
2052 static int transcode_init(void)
2053 {
2054     int ret = 0, i, j, k;
2055     AVFormatContext *oc;
2056     AVCodecContext *codec;
2057     OutputStream *ost;
2058     InputStream *ist;
2059     char error[1024];
2060     int want_sdp = 1;
2061
2062     /* init framerate emulation */
2063     for (i = 0; i < nb_input_files; i++) {
2064         InputFile *ifile = input_files[i];
2065         if (ifile->rate_emu)
2066             for (j = 0; j < ifile->nb_streams; j++)
2067                 input_streams[j + ifile->ist_index]->start = av_gettime();
2068     }
2069
2070     /* output stream init */
2071     for (i = 0; i < nb_output_files; i++) {
2072         oc = output_files[i]->ctx;
2073         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2074             av_dump_format(oc, i, oc->filename, 1);
2075             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2076             return AVERROR(EINVAL);
2077         }
2078     }
2079
2080     /* init complex filtergraphs */
2081     for (i = 0; i < nb_filtergraphs; i++)
2082         if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
2083             return ret;
2084
2085     /* for each output stream, we compute the right encoding parameters */
2086     for (i = 0; i < nb_output_streams; i++) {
2087         AVCodecContext *icodec = NULL;
2088         ost = output_streams[i];
2089         oc  = output_files[ost->file_index]->ctx;
2090         ist = get_input_stream(ost);
2091
2092         if (ost->attachment_filename)
2093             continue;
2094
2095         codec  = ost->st->codec;
2096
2097         if (ist) {
2098             icodec = ist->st->codec;
2099
2100             ost->st->disposition          = ist->st->disposition;
2101             codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
2102             codec->chroma_sample_location = icodec->chroma_sample_location;
2103         }
2104
2105         if (ost->stream_copy) {
2106             uint64_t extra_size;
2107
2108             av_assert0(ist && !ost->filter);
2109
2110             extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2111
2112             if (extra_size > INT_MAX) {
2113                 return AVERROR(EINVAL);
2114             }
2115
2116             /* if stream_copy is selected, no need to decode or encode */
2117             codec->codec_id   = icodec->codec_id;
2118             codec->codec_type = icodec->codec_type;
2119
2120             if (!codec->codec_tag) {
2121                 unsigned int codec_tag;
2122                 if (!oc->oformat->codec_tag ||
2123                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2124                      !av_codec_get_tag2(oc->oformat->codec_tag, icodec->codec_id, &codec_tag))
2125                     codec->codec_tag = icodec->codec_tag;
2126             }
2127
2128             codec->bit_rate       = icodec->bit_rate;
2129             codec->rc_max_rate    = icodec->rc_max_rate;
2130             codec->rc_buffer_size = icodec->rc_buffer_size;
2131             codec->field_order    = icodec->field_order;
2132             codec->extradata      = av_mallocz(extra_size);
2133             if (!codec->extradata) {
2134                 return AVERROR(ENOMEM);
2135             }
2136             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2137             codec->extradata_size= icodec->extradata_size;
2138             codec->bits_per_coded_sample  = icodec->bits_per_coded_sample;
2139
2140             codec->time_base = ist->st->time_base;
2141             /*
2142              * Avi is a special case here because it supports variable fps but
2143              * having the fps and timebase differe significantly adds quite some
2144              * overhead
2145              */
2146             if(!strcmp(oc->oformat->name, "avi")) {
2147                 if ( copy_tb<0 && av_q2d(ist->st->r_frame_rate) >= av_q2d(ist->st->avg_frame_rate)
2148                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(ist->st->time_base)
2149                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(icodec->time_base)
2150                                && av_q2d(ist->st->time_base) < 1.0/500 && av_q2d(icodec->time_base) < 1.0/500
2151                      || copy_tb==2){
2152                     codec->time_base.num = ist->st->r_frame_rate.den;
2153                     codec->time_base.den = 2*ist->st->r_frame_rate.num;
2154                     codec->ticks_per_frame = 2;
2155                 } else if (   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2156                                  && av_q2d(ist->st->time_base) < 1.0/500
2157                     || copy_tb==0){
2158                     codec->time_base = icodec->time_base;
2159                     codec->time_base.num *= icodec->ticks_per_frame;
2160                     codec->time_base.den *= 2;
2161                     codec->ticks_per_frame = 2;
2162                 }
2163             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2164                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2165                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2166                       && strcmp(oc->oformat->name, "f4v")
2167             ) {
2168                 if(   copy_tb<0 && icodec->time_base.den
2169                                 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
2170                                 && av_q2d(ist->st->time_base) < 1.0/500
2171                    || copy_tb==0){
2172                     codec->time_base = icodec->time_base;
2173                     codec->time_base.num *= icodec->ticks_per_frame;
2174                 }
2175             }
2176             if (   codec->codec_tag == AV_RL32("tmcd")
2177                 && icodec->time_base.num < icodec->time_base.den
2178                 && icodec->time_base.num > 0
2179                 && 121LL*icodec->time_base.num > icodec->time_base.den) {
2180                 codec->time_base = icodec->time_base;
2181             }
2182
2183             if(ost->frame_rate.num)
2184                 codec->time_base = av_inv_q(ost->frame_rate);
2185
2186             av_reduce(&codec->time_base.num, &codec->time_base.den,
2187                         codec->time_base.num, codec->time_base.den, INT_MAX);
2188
2189             switch (codec->codec_type) {
2190             case AVMEDIA_TYPE_AUDIO:
2191                 if (audio_volume != 256) {
2192                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2193                     exit(1);
2194                 }
2195                 codec->channel_layout     = icodec->channel_layout;
2196                 codec->sample_rate        = icodec->sample_rate;
2197                 codec->channels           = icodec->channels;
2198                 codec->frame_size         = icodec->frame_size;
2199                 codec->audio_service_type = icodec->audio_service_type;
2200                 codec->block_align        = icodec->block_align;
2201                 if((codec->block_align == 1 || codec->block_align == 1152 || codec->block_align == 576) && codec->codec_id == AV_CODEC_ID_MP3)
2202                     codec->block_align= 0;
2203                 if(codec->codec_id == AV_CODEC_ID_AC3)
2204                     codec->block_align= 0;
2205                 break;
2206             case AVMEDIA_TYPE_VIDEO:
2207                 codec->pix_fmt            = icodec->pix_fmt;
2208                 codec->width              = icodec->width;
2209                 codec->height             = icodec->height;
2210                 codec->has_b_frames       = icodec->has_b_frames;
2211                 if (!codec->sample_aspect_ratio.num) {
2212                     codec->sample_aspect_ratio   =
2213                     ost->st->sample_aspect_ratio =
2214                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2215                         ist->st->codec->sample_aspect_ratio.num ?
2216                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2217                 }
2218                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2219                 break;
2220             case AVMEDIA_TYPE_SUBTITLE:
2221                 codec->width  = icodec->width;
2222                 codec->height = icodec->height;
2223                 break;
2224             case AVMEDIA_TYPE_DATA:
2225             case AVMEDIA_TYPE_ATTACHMENT:
2226                 break;
2227             default:
2228                 abort();
2229             }
2230         } else {
2231             if (!ost->enc)
2232                 ost->enc = avcodec_find_encoder(codec->codec_id);
2233             if (!ost->enc) {
2234                 /* should only happen when a default codec is not present. */
2235                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
2236                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2237                 ret = AVERROR(EINVAL);
2238                 goto dump_format;
2239             }
2240
2241             if (ist)
2242                 ist->decoding_needed++;
2243             ost->encoding_needed = 1;
2244
2245             if (!ost->filter &&
2246                 (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2247                  codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
2248                     FilterGraph *fg;
2249                     fg = init_simple_filtergraph(ist, ost);
2250                     if (configure_filtergraph(fg)) {
2251                         av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2252                         exit(1);
2253                     }
2254             }
2255
2256             if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2257                 if (ost->filter && !ost->frame_rate.num)
2258                     ost->frame_rate = av_buffersink_get_frame_rate(ost->filter->filter);
2259                 if (ist && !ost->frame_rate.num)
2260                     ost->frame_rate = ist->framerate;
2261                 if (ist && !ost->frame_rate.num)
2262                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25, 1};
2263 //                    ost->frame_rate = ist->st->avg_frame_rate.num ? ist->st->avg_frame_rate : (AVRational){25, 1};
2264                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2265                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2266                     ost->frame_rate = ost->enc->supported_framerates[idx];
2267                 }
2268             }
2269
2270             switch (codec->codec_type) {
2271             case AVMEDIA_TYPE_AUDIO:
2272                 codec->sample_fmt     = ost->filter->filter->inputs[0]->format;
2273                 codec->sample_rate    = ost->filter->filter->inputs[0]->sample_rate;
2274                 codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
2275                 codec->channels       = avfilter_link_get_channels(ost->filter->filter->inputs[0]);
2276                 codec->time_base      = (AVRational){ 1, codec->sample_rate };
2277                 break;
2278             case AVMEDIA_TYPE_VIDEO:
2279                 codec->time_base = av_inv_q(ost->frame_rate);
2280                 if (ost->filter && !(codec->time_base.num && codec->time_base.den))
2281                     codec->time_base = ost->filter->filter->inputs[0]->time_base;
2282                 if (   av_q2d(codec->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
2283                    && (video_sync_method == VSYNC_CFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
2284                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
2285                                                "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
2286                 }
2287                 for (j = 0; j < ost->forced_kf_count; j++)
2288                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2289                                                          AV_TIME_BASE_Q,
2290                                                          codec->time_base);
2291
2292                 codec->width  = ost->filter->filter->inputs[0]->w;
2293                 codec->height = ost->filter->filter->inputs[0]->h;
2294                 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
2295                     ost->frame_aspect_ratio ? // overridden by the -aspect cli option
2296                     av_d2q(ost->frame_aspect_ratio * codec->height/codec->width, 255) :
2297                     ost->filter->filter->inputs[0]->sample_aspect_ratio;
2298                 if (!strncmp(ost->enc->name, "libx264", 7) &&
2299                     codec->pix_fmt == AV_PIX_FMT_NONE &&
2300                     ost->filter->filter->inputs[0]->format != AV_PIX_FMT_YUV420P)
2301                     av_log(NULL, AV_LOG_INFO,
2302                            "No pixel format specified, %s for H.264 encoding chosen.\n"
2303                            "Use -pix_fmt yuv420p for compatibility with outdated media players.\n",
2304                            av_get_pix_fmt_name(ost->filter->filter->inputs[0]->format));
2305                 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
2306
2307                 if (!icodec ||
2308                     codec->width   != icodec->width  ||
2309                     codec->height  != icodec->height ||
2310                     codec->pix_fmt != icodec->pix_fmt) {
2311                     codec->bits_per_raw_sample = frame_bits_per_raw_sample;
2312                 }
2313
2314                 if (ost->forced_keyframes) {
2315                     if (!strncmp(ost->forced_keyframes, "expr:", 5)) {
2316                         ret = av_expr_parse(&ost->forced_keyframes_pexpr, ost->forced_keyframes+5,
2317                                             forced_keyframes_const_names, NULL, NULL, NULL, NULL, 0, NULL);
2318                         if (ret < 0) {
2319                             av_log(NULL, AV_LOG_ERROR,
2320                                    "Invalid force_key_frames expression '%s'\n", ost->forced_keyframes+5);
2321                             return ret;
2322                         }
2323                         ost->forced_keyframes_expr_const_values[FKF_N] = 0;
2324                         ost->forced_keyframes_expr_const_values[FKF_N_FORCED] = 0;
2325                         ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] = NAN;
2326                         ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] = NAN;
2327                     } else {
2328                         parse_forced_key_frames(ost->forced_keyframes, ost, ost->st->codec);
2329                     }
2330                 }
2331                 break;
2332             case AVMEDIA_TYPE_SUBTITLE:
2333                 codec->time_base = (AVRational){1, 1000};
2334                 if (!codec->width) {
2335                     codec->width     = input_streams[ost->source_index]->st->codec->width;
2336                     codec->height    = input_streams[ost->source_index]->st->codec->height;
2337                 }
2338                 break;
2339             default:
2340                 abort();
2341                 break;
2342             }
2343             /* two pass mode */
2344             if (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
2345                 char logfilename[1024];
2346                 FILE *f;
2347
2348                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2349                          ost->logfile_prefix ? ost->logfile_prefix :
2350                                                DEFAULT_PASS_LOGFILENAME_PREFIX,
2351                          i);
2352                 if (!strcmp(ost->enc->name, "libx264")) {
2353                     av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
2354                 } else {
2355                     if (codec->flags & CODEC_FLAG_PASS2) {
2356                         char  *logbuffer;
2357                         size_t logbuffer_size;
2358                         if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2359                             av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2360                                    logfilename);
2361                             exit(1);
2362                         }
2363                         codec->stats_in = logbuffer;
2364                     }
2365                     if (codec->flags & CODEC_FLAG_PASS1) {
2366                         f = fopen(logfilename, "wb");
2367                         if (!f) {
2368                             av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2369                                 logfilename, strerror(errno));
2370                             exit(1);
2371                         }
2372                         ost->logfile = f;
2373                     }
2374                 }
2375             }
2376         }
2377     }
2378
2379     /* open each encoder */
2380     for (i = 0; i < nb_output_streams; i++) {
2381         ost = output_streams[i];
2382         if (ost->encoding_needed) {
2383             AVCodec      *codec = ost->enc;
2384             AVCodecContext *dec = NULL;
2385
2386             if ((ist = get_input_stream(ost)))
2387                 dec = ist->st->codec;
2388             if (dec && dec->subtitle_header) {
2389                 /* ASS code assumes this buffer is null terminated so add extra byte. */
2390                 ost->st->codec->subtitle_header = av_mallocz(dec->subtitle_header_size + 1);
2391                 if (!ost->st->codec->subtitle_header) {
2392                     ret = AVERROR(ENOMEM);
2393                     goto dump_format;
2394                 }
2395                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2396                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2397             }
2398             if (!av_dict_get(ost->opts, "threads", NULL, 0))
2399                 av_dict_set(&ost->opts, "threads", "auto", 0);
2400             if ((ret = avcodec_open2(ost->st->codec, codec, &ost->opts)) < 0) {
2401                 if (ret == AVERROR_EXPERIMENTAL)
2402                     abort_codec_experimental(codec, 1);
2403                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2404                         ost->file_index, ost->index);
2405                 goto dump_format;
2406             }
2407             if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
2408                 !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
2409                 av_buffersink_set_frame_size(ost->filter->filter,
2410                                              ost->st->codec->frame_size);
2411             assert_avoptions(ost->opts);
2412             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2413                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2414                                              " It takes bits/s as argument, not kbits/s\n");
2415             extra_size += ost->st->codec->extradata_size;
2416
2417             if (ost->st->codec->me_threshold)
2418                 input_streams[ost->source_index]->st->codec->debug |= FF_DEBUG_MV;
2419         } else {
2420             av_opt_set_dict(ost->st->codec, &ost->opts);
2421         }
2422     }
2423
2424     /* init input streams */
2425     for (i = 0; i < nb_input_streams; i++)
2426         if ((ret = init_input_stream(i, error, sizeof(error))) < 0) {
2427             for (i = 0; i < nb_output_streams; i++) {
2428                 ost = output_streams[i];
2429                 avcodec_close(ost->st->codec);
2430             }
2431             goto dump_format;
2432         }
2433
2434     /* discard unused programs */
2435     for (i = 0; i < nb_input_files; i++) {
2436         InputFile *ifile = input_files[i];
2437         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2438             AVProgram *p = ifile->ctx->programs[j];
2439             int discard  = AVDISCARD_ALL;
2440
2441             for (k = 0; k < p->nb_stream_indexes; k++)
2442                 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
2443                     discard = AVDISCARD_DEFAULT;
2444                     break;
2445                 }
2446             p->discard = discard;
2447         }
2448     }
2449
2450     /* open files and write file headers */
2451     for (i = 0; i < nb_output_files; i++) {
2452         oc = output_files[i]->ctx;
2453         oc->interrupt_callback = int_cb;
2454         if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
2455             char errbuf[128];
2456             const char *errbuf_ptr = errbuf;
2457             if (av_strerror(ret, errbuf, sizeof(errbuf)) < 0)
2458                 errbuf_ptr = strerror(AVUNERROR(ret));
2459             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?): %s", i, errbuf_ptr);
2460             ret = AVERROR(EINVAL);
2461             goto dump_format;
2462         }
2463 //         assert_avoptions(output_files[i]->opts);
2464         if (strcmp(oc->oformat->name, "rtp")) {
2465             want_sdp = 0;
2466         }
2467     }
2468
2469  dump_format:
2470     /* dump the file output parameters - cannot be done before in case
2471        of stream copy */
2472     for (i = 0; i < nb_output_files; i++) {
2473         av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
2474     }
2475
2476     /* dump the stream mapping */
2477     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2478     for (i = 0; i < nb_input_streams; i++) {
2479         ist = input_streams[i];
2480
2481         for (j = 0; j < ist->nb_filters; j++) {
2482             if (ist->filters[j]->graph->graph_desc) {
2483                 av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
2484                        ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
2485                        ist->filters[j]->name);
2486                 if (nb_filtergraphs > 1)
2487                     av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
2488                 av_log(NULL, AV_LOG_INFO, "\n");
2489             }
2490         }
2491     }
2492
2493     for (i = 0; i < nb_output_streams; i++) {
2494         ost = output_streams[i];
2495
2496         if (ost->attachment_filename) {
2497             /* an attached file */
2498             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
2499                    ost->attachment_filename, ost->file_index, ost->index);
2500             continue;
2501         }
2502
2503         if (ost->filter && ost->filter->graph->graph_desc) {
2504             /* output from a complex graph */
2505             av_log(NULL, AV_LOG_INFO, "  %s", ost->filter->name);
2506             if (nb_filtergraphs > 1)
2507                 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
2508
2509             av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
2510                    ost->index, ost->enc ? ost->enc->name : "?");
2511             continue;
2512         }
2513
2514         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
2515                input_streams[ost->source_index]->file_index,
2516                input_streams[ost->source_index]->st->index,
2517                ost->file_index,
2518                ost->index);
2519         if (ost->sync_ist != input_streams[ost->source_index])
2520             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2521                    ost->sync_ist->file_index,
2522                    ost->sync_ist->st->index);
2523         if (ost->stream_copy)
2524             av_log(NULL, AV_LOG_INFO, " (copy)");
2525         else
2526             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
2527                    input_streams[ost->source_index]->dec->name : "?",
2528                    ost->enc ? ost->enc->name : "?");
2529         av_log(NULL, AV_LOG_INFO, "\n");
2530     }
2531
2532     if (ret) {
2533         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2534         return ret;
2535     }
2536
2537     if (want_sdp) {
2538         print_sdp();
2539     }
2540
2541     return 0;
2542 }
2543
2544 /* Return 1 if there remain streams where more output is wanted, 0 otherwise. */
2545 static int need_output(void)
2546 {
2547     int i;
2548
2549     for (i = 0; i < nb_output_streams; i++) {
2550         OutputStream *ost    = output_streams[i];
2551         OutputFile *of       = output_files[ost->file_index];
2552         AVFormatContext *os  = output_files[ost->file_index]->ctx;
2553
2554         if (ost->finished ||
2555             (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2556             continue;
2557         if (ost->frame_number >= ost->max_frames) {
2558             int j;
2559             for (j = 0; j < of->ctx->nb_streams; j++)
2560                 close_output_stream(output_streams[of->ost_index + j]);
2561             continue;
2562         }
2563
2564         return 1;
2565     }
2566
2567     return 0;
2568 }
2569
2570 /**
2571  * Select the output stream to process.
2572  *
2573  * @return  selected output stream, or NULL if none available
2574  */
2575 static OutputStream *choose_output(void)
2576 {
2577     int i;
2578     int64_t opts_min = INT64_MAX;
2579     OutputStream *ost_min = NULL;
2580
2581     for (i = 0; i < nb_output_streams; i++) {
2582         OutputStream *ost = output_streams[i];
2583         int64_t opts = av_rescale_q(ost->st->cur_dts, ost->st->time_base,
2584                                     AV_TIME_BASE_Q);
2585         if (!ost->unavailable && !ost->finished && opts < opts_min) {
2586             opts_min = opts;
2587             ost_min  = ost;
2588         }
2589     }
2590     return ost_min;
2591 }
2592
2593 static int check_keyboard_interaction(int64_t cur_time)
2594 {
2595     int i, ret, key;
2596     static int64_t last_time;
2597     if (received_nb_signals)
2598         return AVERROR_EXIT;
2599     /* read_key() returns 0 on EOF */
2600     if(cur_time - last_time >= 100000 && !run_as_daemon){
2601         key =  read_key();
2602         last_time = cur_time;
2603     }else
2604         key = -1;
2605     if (key == 'q')
2606         return AVERROR_EXIT;
2607     if (key == '+') av_log_set_level(av_log_get_level()+10);
2608     if (key == '-') av_log_set_level(av_log_get_level()-10);
2609     if (key == 's') qp_hist     ^= 1;
2610     if (key == 'h'){
2611         if (do_hex_dump){
2612             do_hex_dump = do_pkt_dump = 0;
2613         } else if(do_pkt_dump){
2614             do_hex_dump = 1;
2615         } else
2616             do_pkt_dump = 1;
2617         av_log_set_level(AV_LOG_DEBUG);
2618     }
2619     if (key == 'c' || key == 'C'){
2620         char buf[4096], target[64], command[256], arg[256] = {0};
2621         double time;
2622         int k, n = 0;
2623         fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
2624         i = 0;
2625         while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
2626             if (k > 0)
2627                 buf[i++] = k;
2628         buf[i] = 0;
2629         if (k > 0 &&
2630             (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
2631             av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
2632                    target, time, command, arg);
2633             for (i = 0; i < nb_filtergraphs; i++) {
2634                 FilterGraph *fg = filtergraphs[i];
2635                 if (fg->graph) {
2636                     if (time < 0) {
2637                         ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
2638                                                           key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
2639                         fprintf(stderr, "Command reply for stream %d: ret:%d res:%s\n", i, ret, buf);
2640                     } else {
2641                         ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
2642                     }
2643                 }
2644             }
2645         } else {
2646             av_log(NULL, AV_LOG_ERROR,
2647                    "Parse error, at least 3 arguments were expected, "
2648                    "only %d given in string '%s'\n", n, buf);
2649         }
2650     }
2651     if (key == 'd' || key == 'D'){
2652         int debug=0;
2653         if(key == 'D') {
2654             debug = input_streams[0]->st->codec->debug<<1;
2655             if(!debug) debug = 1;
2656             while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2657                 debug += debug;
2658         }else
2659             if(scanf("%d", &debug)!=1)
2660                 fprintf(stderr,"error parsing debug value\n");
2661         for(i=0;i<nb_input_streams;i++) {
2662             input_streams[i]->st->codec->debug = debug;
2663         }
2664         for(i=0;i<nb_output_streams;i++) {
2665             OutputStream *ost = output_streams[i];
2666             ost->st->codec->debug = debug;
2667         }
2668         if(debug) av_log_set_level(AV_LOG_DEBUG);
2669         fprintf(stderr,"debug=%d\n", debug);
2670     }
2671     if (key == '?'){
2672         fprintf(stderr, "key    function\n"
2673                         "?      show this help\n"
2674                         "+      increase verbosity\n"
2675                         "-      decrease verbosity\n"
2676                         "c      Send command to filtergraph\n"
2677                         "D      cycle through available debug modes\n"
2678                         "h      dump packets/hex press to cycle through the 3 states\n"
2679                         "q      quit\n"
2680                         "s      Show QP histogram\n"
2681         );
2682     }
2683     return 0;
2684 }
2685
2686 #if HAVE_PTHREADS
2687 static void *input_thread(void *arg)
2688 {
2689     InputFile *f = arg;
2690     int ret = 0;
2691
2692     while (!transcoding_finished && ret >= 0) {
2693         AVPacket pkt;
2694         ret = av_read_frame(f->ctx, &pkt);
2695
2696         if (ret == AVERROR(EAGAIN)) {
2697             av_usleep(10000);
2698             ret = 0;
2699             continue;
2700         } else if (ret < 0)
2701             break;
2702
2703         pthread_mutex_lock(&f->fifo_lock);
2704         while (!av_fifo_space(f->fifo))
2705             pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
2706
2707         av_dup_packet(&pkt);
2708         av_fifo_generic_write(f->fifo, &pkt, sizeof(pkt), NULL);
2709
2710         pthread_mutex_unlock(&f->fifo_lock);
2711     }
2712
2713     f->finished = 1;
2714     return NULL;
2715 }
2716
2717 static void free_input_threads(void)
2718 {
2719     int i;
2720
2721     if (nb_input_files == 1)
2722         return;
2723
2724     transcoding_finished = 1;
2725
2726     for (i = 0; i < nb_input_files; i++) {
2727         InputFile *f = input_files[i];
2728         AVPacket pkt;
2729
2730         if (!f->fifo || f->joined)
2731             continue;
2732
2733         pthread_mutex_lock(&f->fifo_lock);
2734         while (av_fifo_size(f->fifo)) {
2735             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2736             av_free_packet(&pkt);
2737         }
2738         pthread_cond_signal(&f->fifo_cond);
2739         pthread_mutex_unlock(&f->fifo_lock);
2740
2741         pthread_join(f->thread, NULL);
2742         f->joined = 1;
2743
2744         while (av_fifo_size(f->fifo)) {
2745             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2746             av_free_packet(&pkt);
2747         }
2748         av_fifo_free(f->fifo);
2749     }
2750 }
2751
2752 static int init_input_threads(void)
2753 {
2754     int i, ret;
2755
2756     if (nb_input_files == 1)
2757         return 0;
2758
2759     for (i = 0; i < nb_input_files; i++) {
2760         InputFile *f = input_files[i];
2761
2762         if (!(f->fifo = av_fifo_alloc(8*sizeof(AVPacket))))
2763             return AVERROR(ENOMEM);
2764
2765         pthread_mutex_init(&f->fifo_lock, NULL);
2766         pthread_cond_init (&f->fifo_cond, NULL);
2767
2768         if ((ret = pthread_create(&f->thread, NULL, input_thread, f)))
2769             return AVERROR(ret);
2770     }
2771     return 0;
2772 }
2773
2774 static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
2775 {
2776     int ret = 0;
2777
2778     pthread_mutex_lock(&f->fifo_lock);
2779
2780     if (av_fifo_size(f->fifo)) {
2781         av_fifo_generic_read(f->fifo, pkt, sizeof(*pkt), NULL);
2782         pthread_cond_signal(&f->fifo_cond);
2783     } else {
2784         if (f->finished)
2785             ret = AVERROR_EOF;
2786         else
2787             ret = AVERROR(EAGAIN);
2788     }
2789
2790     pthread_mutex_unlock(&f->fifo_lock);
2791
2792     return ret;
2793 }
2794 #endif
2795
2796 static int get_input_packet(InputFile *f, AVPacket *pkt)
2797 {
2798 #if HAVE_PTHREADS
2799     if (nb_input_files > 1)
2800         return get_input_packet_mt(f, pkt);
2801 #endif
2802     return av_read_frame(f->ctx, pkt);
2803 }
2804
2805 static int got_eagain(void)
2806 {
2807     int i;
2808     for (i = 0; i < nb_output_streams; i++)
2809         if (output_streams[i]->unavailable)
2810             return 1;
2811     return 0;
2812 }
2813
2814 static void reset_eagain(void)
2815 {
2816     int i;
2817     for (i = 0; i < nb_input_files; i++)
2818         input_files[i]->eagain = 0;
2819     for (i = 0; i < nb_output_streams; i++)
2820         output_streams[i]->unavailable = 0;
2821 }
2822
2823 /*
2824  * Return
2825  * - 0 -- one packet was read and processed
2826  * - AVERROR(EAGAIN) -- no packets were available for selected file,
2827  *   this function should be called again
2828  * - AVERROR_EOF -- this function should not be called again
2829  */
2830 static int process_input(int file_index)
2831 {
2832     InputFile *ifile = input_files[file_index];
2833     AVFormatContext *is;
2834     InputStream *ist;
2835     AVPacket pkt;
2836     int ret, i, j;
2837
2838     is  = ifile->ctx;
2839     ret = get_input_packet(ifile, &pkt);
2840
2841     if (ret == AVERROR(EAGAIN)) {
2842         ifile->eagain = 1;
2843         return ret;
2844     }
2845     if (ret < 0) {
2846         if (ret != AVERROR_EOF) {
2847             print_error(is->filename, ret);
2848             if (exit_on_error)
2849                 exit(1);
2850         }
2851         ifile->eof_reached = 1;
2852
2853         for (i = 0; i < ifile->nb_streams; i++) {
2854             ist = input_streams[ifile->ist_index + i];
2855             if (ist->decoding_needed)
2856                 output_packet(ist, NULL);
2857
2858             /* mark all outputs that don't go through lavfi as finished */
2859             for (j = 0; j < nb_output_streams; j++) {
2860                 OutputStream *ost = output_streams[j];
2861
2862                 if (ost->source_index == ifile->ist_index + i &&
2863                     (ost->stream_copy || ost->enc->type == AVMEDIA_TYPE_SUBTITLE))
2864                     close_output_stream(ost);
2865             }
2866         }
2867
2868         return AVERROR(EAGAIN);
2869     }
2870
2871     reset_eagain();
2872
2873     if (do_pkt_dump) {
2874         av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2875                          is->streams[pkt.stream_index]);
2876     }
2877     /* the following test is needed in case new streams appear
2878        dynamically in stream : we ignore them */
2879     if (pkt.stream_index >= ifile->nb_streams) {
2880         report_new_stream(file_index, &pkt);
2881         goto discard_packet;
2882     }
2883
2884     ist = input_streams[ifile->ist_index + pkt.stream_index];
2885     if (ist->discard)
2886         goto discard_packet;
2887
2888     if (debug_ts) {
2889         av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
2890                "next_dts:%s next_dts_time:%s next_pts:%s next_pts_time:%s pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s off:%s off_time:%s\n",
2891                ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
2892                av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &AV_TIME_BASE_Q),
2893                av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &AV_TIME_BASE_Q),
2894                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
2895                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
2896                av_ts2str(input_files[ist->file_index]->ts_offset),
2897                av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
2898     }
2899
2900     if(!ist->wrap_correction_done && is->start_time != AV_NOPTS_VALUE && ist->st->pts_wrap_bits < 64){
2901         int64_t stime, stime2;
2902         // Correcting starttime based on the enabled streams
2903         // FIXME this ideally should be done before the first use of starttime but we do not know which are the enabled streams at that point.
2904         //       so we instead do it here as part of discontinuity handling
2905         if (   ist->next_dts == AV_NOPTS_VALUE
2906             && ifile->ts_offset == -is->start_time
2907             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2908             int64_t new_start_time = INT64_MAX;
2909             for (i=0; i<is->nb_streams; i++) {
2910                 AVStream *st = is->streams[i];
2911                 if(st->discard == AVDISCARD_ALL || st->start_time == AV_NOPTS_VALUE)
2912                     continue;
2913                 new_start_time = FFMIN(new_start_time, av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q));
2914             }
2915             if (new_start_time > is->start_time) {
2916                 av_log(is, AV_LOG_VERBOSE, "Correcting start time by %"PRId64"\n", new_start_time - is->start_time);
2917                 ifile->ts_offset = -new_start_time;
2918             }
2919         }
2920
2921         stime = av_rescale_q(is->start_time, AV_TIME_BASE_Q, ist->st->time_base);
2922         stime2= stime + (1ULL<<ist->st->pts_wrap_bits);
2923         ist->wrap_correction_done = 1;
2924
2925         if(stime2 > stime && pkt.dts != AV_NOPTS_VALUE && pkt.dts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
2926             pkt.dts -= 1ULL<<ist->st->pts_wrap_bits;
2927             ist->wrap_correction_done = 0;
2928         }
2929         if(stime2 > stime && pkt.pts != AV_NOPTS_VALUE && pkt.pts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
2930             pkt.pts -= 1ULL<<ist->st->pts_wrap_bits;
2931             ist->wrap_correction_done = 0;
2932         }
2933     }
2934
2935     if (pkt.dts != AV_NOPTS_VALUE)
2936         pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2937     if (pkt.pts != AV_NOPTS_VALUE)
2938         pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2939
2940     if (pkt.pts != AV_NOPTS_VALUE)
2941         pkt.pts *= ist->ts_scale;
2942     if (pkt.dts != AV_NOPTS_VALUE)
2943         pkt.dts *= ist->ts_scale;
2944
2945     if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts == AV_NOPTS_VALUE && !copy_ts
2946         && (is->iformat->flags & AVFMT_TS_DISCONT) && ifile->last_ts != AV_NOPTS_VALUE) {
2947         int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2948         int64_t delta   = pkt_dts - ifile->last_ts;
2949         if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
2950             (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
2951                 ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)){
2952             ifile->ts_offset -= delta;
2953             av_log(NULL, AV_LOG_DEBUG,
2954                    "Inter stream timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2955                    delta, ifile->ts_offset);
2956             pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2957             if (pkt.pts != AV_NOPTS_VALUE)
2958                 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2959         }
2960     }
2961
2962     if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE &&
2963         !copy_ts) {
2964         int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2965         int64_t delta   = pkt_dts - ist->next_dts;
2966         if (is->iformat->flags & AVFMT_TS_DISCONT) {
2967         if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
2968             (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
2969                 ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
2970             pkt_dts+1<ist->pts){
2971             ifile->ts_offset -= delta;
2972             av_log(NULL, AV_LOG_DEBUG,
2973                    "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2974                    delta, ifile->ts_offset);
2975             pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2976             if (pkt.pts != AV_NOPTS_VALUE)
2977                 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2978         }
2979         } else {
2980             if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
2981                 (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
2982                ) {
2983                 av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
2984                 pkt.dts = AV_NOPTS_VALUE;
2985             }
2986             if (pkt.pts != AV_NOPTS_VALUE){
2987                 int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
2988                 delta   = pkt_pts - ist->next_dts;
2989                 if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
2990                     (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
2991                    ) {
2992                     av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
2993                     pkt.pts = AV_NOPTS_VALUE;
2994                 }
2995             }
2996         }
2997     }
2998
2999     if (pkt.dts != AV_NOPTS_VALUE)
3000         ifile->last_ts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3001
3002     if (debug_ts) {
3003         av_log(NULL, AV_LOG_INFO, "demuxer+ffmpeg -> ist_index:%d type:%s pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s off:%s off_time:%s\n",
3004                ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
3005                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
3006                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
3007                av_ts2str(input_files[ist->file_index]->ts_offset),
3008                av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
3009     }
3010
3011     sub2video_heartbeat(ist, pkt.pts);
3012
3013     ret = output_packet(ist, &pkt);
3014     if (ret < 0) {
3015         char buf[128];
3016         av_strerror(ret, buf, sizeof(buf));
3017         av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d: %s\n",
3018                 ist->file_index, ist->st->index, buf);
3019         if (exit_on_error)
3020             exit(1);
3021     }
3022
3023 discard_packet:
3024     av_free_packet(&pkt);
3025
3026     return 0;
3027 }
3028
3029 /**
3030  * Perform a step of transcoding for the specified filter graph.
3031  *
3032  * @param[in]  graph     filter graph to consider
3033  * @param[out] best_ist  input stream where a frame would allow to continue
3034  * @return  0 for success, <0 for error
3035  */
3036 static int transcode_from_filter(FilterGraph *graph, InputStream **best_ist)
3037 {
3038     int i, ret;
3039     int nb_requests, nb_requests_max = 0;
3040     InputFilter *ifilter;
3041     InputStream *ist;
3042
3043     *best_ist = NULL;
3044     ret = avfilter_graph_request_oldest(graph->graph);
3045     if (ret >= 0)
3046         return reap_filters();
3047
3048     if (ret == AVERROR_EOF) {
3049         ret = reap_filters();
3050         for (i = 0; i < graph->nb_outputs; i++)
3051             close_output_stream(graph->outputs[i]->ost);
3052         return ret;
3053     }
3054     if (ret != AVERROR(EAGAIN))
3055         return ret;
3056
3057     for (i = 0; i < graph->nb_inputs; i++) {
3058         ifilter = graph->inputs[i];
3059         ist = ifilter->ist;
3060         if (input_files[ist->file_index]->eagain ||
3061             input_files[ist->file_index]->eof_reached)
3062             continue;
3063         nb_requests = av_buffersrc_get_nb_failed_requests(ifilter->filter);
3064         if (nb_requests > nb_requests_max) {
3065             nb_requests_max = nb_requests;
3066             *best_ist = ist;
3067         }
3068     }
3069
3070     if (!*best_ist)
3071         for (i = 0; i < graph->nb_outputs; i++)
3072             graph->outputs[i]->ost->unavailable = 1;
3073
3074     return 0;
3075 }
3076
3077 /**
3078  * Run a single step of transcoding.
3079  *
3080  * @return  0 for success, <0 for error
3081  */
3082 static int transcode_step(void)
3083 {
3084     OutputStream *ost;
3085     InputStream  *ist;
3086     int ret;
3087
3088     ost = choose_output();
3089     if (!ost) {
3090         if (got_eagain()) {
3091             reset_eagain();
3092             av_usleep(10000);
3093             return 0;
3094         }
3095         av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from, finishing.\n");
3096         return AVERROR_EOF;
3097     }
3098
3099     if (ost->filter) {
3100         if ((ret = transcode_from_filter(ost->filter->graph, &ist)) < 0)
3101             return ret;
3102         if (!ist)
3103             return 0;
3104     } else {
3105         av_assert0(ost->source_index >= 0);
3106         ist = input_streams[ost->source_index];
3107     }
3108
3109     ret = process_input(ist->file_index);
3110     if (ret == AVERROR(EAGAIN)) {
3111         if (input_files[ist->file_index]->eagain)
3112             ost->unavailable = 1;
3113         return 0;
3114     }
3115     if (ret < 0)
3116         return ret == AVERROR_EOF ? 0 : ret;
3117
3118     return reap_filters();
3119 }
3120
3121 /*
3122  * The following code is the main loop of the file converter
3123  */
3124 static int transcode(void)
3125 {
3126     int ret, i;
3127     AVFormatContext *os;
3128     OutputStream *ost;
3129     InputStream *ist;
3130     int64_t timer_start;
3131
3132     ret = transcode_init();
3133     if (ret < 0)
3134         goto fail;
3135
3136     if (stdin_interaction) {
3137         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
3138     }
3139
3140     timer_start = av_gettime();
3141
3142 #if HAVE_PTHREADS
3143     if ((ret = init_input_threads()) < 0)
3144         goto fail;
3145 #endif
3146
3147     while (!received_sigterm) {
3148         int64_t cur_time= av_gettime();
3149
3150         /* if 'q' pressed, exits */
3151         if (stdin_interaction)
3152             if (check_keyboard_interaction(cur_time) < 0)
3153                 break;
3154
3155         /* check if there's any stream where output is still needed */
3156         if (!need_output()) {
3157             av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
3158             break;
3159         }
3160
3161         ret = transcode_step();
3162         if (ret < 0) {
3163             if (ret == AVERROR_EOF || ret == AVERROR(EAGAIN))
3164                 continue;
3165
3166             av_log(NULL, AV_LOG_ERROR, "Error while filtering.\n");
3167             break;
3168         }
3169
3170         /* dump report by using the output first video and audio streams */
3171         print_report(0, timer_start, cur_time);
3172     }
3173 #if HAVE_PTHREADS
3174     free_input_threads();
3175 #endif
3176
3177     /* at the end of stream, we must flush the decoder buffers */
3178     for (i = 0; i < nb_input_streams; i++) {
3179         ist = input_streams[i];
3180         if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
3181             output_packet(ist, NULL);
3182         }
3183     }
3184     flush_encoders();
3185
3186     term_exit();
3187
3188     /* write the trailer if needed and close file */
3189     for (i = 0; i < nb_output_files; i++) {
3190         os = output_files[i]->ctx;
3191         av_write_trailer(os);
3192     }
3193
3194     /* dump report by using the first video and audio streams */
3195     print_report(1, timer_start, av_gettime());
3196
3197     /* close each encoder */
3198     for (i = 0; i < nb_output_streams; i++) {
3199         ost = output_streams[i];
3200         if (ost->encoding_needed) {
3201             av_freep(&ost->st->codec->stats_in);
3202             avcodec_close(ost->st->codec);
3203         }
3204     }
3205
3206     /* close each decoder */
3207     for (i = 0; i < nb_input_streams; i++) {
3208         ist = input_streams[i];
3209         if (ist->decoding_needed) {
3210             avcodec_close(ist->st->codec);
3211         }
3212     }
3213
3214     /* finished ! */
3215     ret = 0;
3216
3217  fail:
3218 #if HAVE_PTHREADS
3219     free_input_threads();
3220 #endif
3221
3222     if (output_streams) {
3223         for (i = 0; i < nb_output_streams; i++) {
3224             ost = output_streams[i];
3225             if (ost) {
3226                 if (ost->stream_copy)
3227                     av_freep(&ost->st->codec->extradata);
3228                 if (ost->logfile) {
3229                     fclose(ost->logfile);
3230                     ost->logfile = NULL;
3231                 }
3232                 av_freep(&ost->st->codec->subtitle_header);
3233                 av_free(ost->forced_kf_pts);
3234                 av_dict_free(&ost->opts);
3235                 av_dict_free(&ost->swr_opts);
3236                 av_dict_free(&ost->resample_opts);
3237             }
3238         }
3239     }
3240     return ret;
3241 }
3242
3243
3244 static int64_t getutime(void)
3245 {
3246 #if HAVE_GETRUSAGE
3247     struct rusage rusage;
3248
3249     getrusage(RUSAGE_SELF, &rusage);
3250     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
3251 #elif HAVE_GETPROCESSTIMES
3252     HANDLE proc;
3253     FILETIME c, e, k, u;
3254     proc = GetCurrentProcess();
3255     GetProcessTimes(proc, &c, &e, &k, &u);
3256     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
3257 #else
3258     return av_gettime();
3259 #endif
3260 }
3261
3262 static int64_t getmaxrss(void)
3263 {
3264 #if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
3265     struct rusage rusage;
3266     getrusage(RUSAGE_SELF, &rusage);
3267     return (int64_t)rusage.ru_maxrss * 1024;
3268 #elif HAVE_GETPROCESSMEMORYINFO
3269     HANDLE proc;
3270     PROCESS_MEMORY_COUNTERS memcounters;
3271     proc = GetCurrentProcess();
3272     memcounters.cb = sizeof(memcounters);
3273     GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
3274     return memcounters.PeakPagefileUsage;
3275 #else
3276     return 0;
3277 #endif
3278 }
3279
3280 static void log_callback_null(void *ptr, int level, const char *fmt, va_list vl)
3281 {
3282 }
3283
3284 int main(int argc, char **argv)
3285 {
3286     int ret;
3287     int64_t ti;
3288
3289     atexit(exit_program);
3290
3291     setvbuf(stderr,NULL,_IONBF,0); /* win32 runtime needs this */
3292
3293     av_log_set_flags(AV_LOG_SKIP_REPEATED);
3294     parse_loglevel(argc, argv, options);
3295
3296     if(argc>1 && !strcmp(argv[1], "-d")){
3297         run_as_daemon=1;
3298         av_log_set_callback(log_callback_null);
3299         argc--;
3300         argv++;
3301     }
3302
3303     avcodec_register_all();
3304 #if CONFIG_AVDEVICE
3305     avdevice_register_all();
3306 #endif
3307     avfilter_register_all();
3308     av_register_all();
3309     avformat_network_init();
3310
3311     show_banner(argc, argv, options);
3312
3313     term_init();
3314
3315     /* parse options and open all input/output files */
3316     ret = ffmpeg_parse_options(argc, argv);
3317     if (ret < 0)
3318         exit(1);
3319
3320     if (nb_output_files <= 0 && nb_input_files == 0) {
3321         show_usage();
3322         av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
3323         exit(1);
3324     }
3325
3326     /* file converter / grab */
3327     if (nb_output_files <= 0) {
3328         av_log(NULL, AV_LOG_FATAL, "At least one output file must be specified\n");
3329         exit(1);
3330     }
3331
3332 //     if (nb_input_files == 0) {
3333 //         av_log(NULL, AV_LOG_FATAL, "At least one input file must be specified\n");
3334 //         exit(1);
3335 //     }
3336
3337     current_time = ti = getutime();
3338     if (transcode() < 0)
3339         exit(1);
3340     ti = getutime() - ti;
3341     if (do_benchmark) {
3342         printf("bench: utime=%0.3fs\n", ti / 1000000.0);
3343     }
3344
3345     exit(received_nb_signals ? 255 : 0);
3346     return 0;
3347 }