lavfi/subtitles: zero-init AVSubtitle.
[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/buffersrc.h"
68 # include "libavfilter/buffersink.h"
69
70 #if HAVE_SYS_RESOURCE_H
71 #include <sys/time.h>
72 #include <sys/types.h>
73 #include <sys/resource.h>
74 #elif HAVE_GETPROCESSTIMES
75 #include <windows.h>
76 #endif
77 #if HAVE_GETPROCESSMEMORYINFO
78 #include <windows.h>
79 #include <psapi.h>
80 #endif
81
82 #if HAVE_SYS_SELECT_H
83 #include <sys/select.h>
84 #endif
85
86 #if HAVE_TERMIOS_H
87 #include <fcntl.h>
88 #include <sys/ioctl.h>
89 #include <sys/time.h>
90 #include <termios.h>
91 #elif HAVE_KBHIT
92 #include <conio.h>
93 #endif
94
95 #if HAVE_PTHREADS
96 #include <pthread.h>
97 #endif
98
99 #include <time.h>
100
101 #include "ffmpeg.h"
102 #include "cmdutils.h"
103
104 #include "libavutil/avassert.h"
105
106 const char program_name[] = "ffmpeg";
107 const int program_birth_year = 2000;
108
109 static FILE *vstats_file;
110
111 const char *const forced_keyframes_const_names[] = {
112     "n",
113     "n_forced",
114     "prev_forced_n",
115     "prev_forced_t",
116     "t",
117     NULL
118 };
119
120 static void do_video_stats(OutputStream *ost, int frame_size);
121 static int64_t getutime(void);
122 static int64_t getmaxrss(void);
123
124 static int run_as_daemon  = 0;
125 static int64_t video_size = 0;
126 static int64_t audio_size = 0;
127 static int64_t subtitle_size = 0;
128 static int64_t extra_size = 0;
129 static int nb_frames_dup = 0;
130 static int nb_frames_drop = 0;
131 static int64_t decode_error_stat[2];
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]->graph_desc);
446         av_freep(&filtergraphs[i]);
447     }
448     av_freep(&filtergraphs);
449
450     av_freep(&subtitle_out);
451
452     /* close files */
453     for (i = 0; i < nb_output_files; i++) {
454         AVFormatContext *s = output_files[i]->ctx;
455         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
456             avio_close(s->pb);
457         avformat_free_context(s);
458         av_dict_free(&output_files[i]->opts);
459         av_freep(&output_files[i]);
460     }
461     for (i = 0; i < nb_output_streams; i++) {
462         AVBitStreamFilterContext *bsfc = output_streams[i]->bitstream_filters;
463         while (bsfc) {
464             AVBitStreamFilterContext *next = bsfc->next;
465             av_bitstream_filter_close(bsfc);
466             bsfc = next;
467         }
468         output_streams[i]->bitstream_filters = NULL;
469         avcodec_free_frame(&output_streams[i]->filtered_frame);
470
471         av_freep(&output_streams[i]->forced_keyframes);
472         av_expr_free(output_streams[i]->forced_keyframes_pexpr);
473         av_freep(&output_streams[i]->avfilter);
474         av_freep(&output_streams[i]->logfile_prefix);
475         av_freep(&output_streams[i]);
476     }
477     for (i = 0; i < nb_input_files; i++) {
478         avformat_close_input(&input_files[i]->ctx);
479         av_freep(&input_files[i]);
480     }
481     for (i = 0; i < nb_input_streams; i++) {
482         av_frame_free(&input_streams[i]->decoded_frame);
483         av_frame_free(&input_streams[i]->filter_frame);
484         av_dict_free(&input_streams[i]->opts);
485         avsubtitle_free(&input_streams[i]->prev_sub.subtitle);
486         av_frame_free(&input_streams[i]->sub2video.frame);
487         av_freep(&input_streams[i]->filters);
488         av_freep(&input_streams[i]);
489     }
490
491     if (vstats_file)
492         fclose(vstats_file);
493     av_free(vstats_filename);
494
495     av_freep(&input_streams);
496     av_freep(&input_files);
497     av_freep(&output_streams);
498     av_freep(&output_files);
499
500     uninit_opts();
501
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     if (vstats_filename && frame_size)
968         do_video_stats(ost, frame_size);
969   }
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                     av_log(NULL, AV_LOG_WARNING,
1046                            "Error in av_buffersink_get_frame_flags(): %s\n", av_err2str(ret));
1047                 }
1048                 break;
1049             }
1050             frame_pts = AV_NOPTS_VALUE;
1051             if (filtered_frame->pts != AV_NOPTS_VALUE) {
1052                 filtered_frame->pts = frame_pts = av_rescale_q(filtered_frame->pts,
1053                                                 ost->filter->filter->inputs[0]->time_base,
1054                                                 ost->st->codec->time_base) -
1055                                     av_rescale_q(of->start_time,
1056                                                 AV_TIME_BASE_Q,
1057                                                 ost->st->codec->time_base);
1058
1059                 if (of->start_time && filtered_frame->pts < 0) {
1060                     av_frame_unref(filtered_frame);
1061                     continue;
1062                 }
1063             }
1064             //if (ost->source_index >= 0)
1065             //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
1066
1067
1068             switch (ost->filter->filter->inputs[0]->type) {
1069             case AVMEDIA_TYPE_VIDEO:
1070                 filtered_frame->pts = frame_pts;
1071                 if (!ost->frame_aspect_ratio.num)
1072                     ost->st->codec->sample_aspect_ratio = filtered_frame->sample_aspect_ratio;
1073
1074                 do_video_out(of->ctx, ost, filtered_frame);
1075                 break;
1076             case AVMEDIA_TYPE_AUDIO:
1077                 filtered_frame->pts = frame_pts;
1078                 if (!(ost->st->codec->codec->capabilities & CODEC_CAP_PARAM_CHANGE) &&
1079                     ost->st->codec->channels != av_frame_get_channels(filtered_frame)) {
1080                     av_log(NULL, AV_LOG_ERROR,
1081                            "Audio filter graph output is not normalized and encoder does not support parameter changes\n");
1082                     break;
1083                 }
1084                 do_audio_out(of->ctx, ost, filtered_frame);
1085                 break;
1086             default:
1087                 // TODO support subtitle filters
1088                 av_assert0(0);
1089             }
1090
1091             av_frame_unref(filtered_frame);
1092         }
1093     }
1094
1095     return 0;
1096 }
1097
1098 static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
1099 {
1100     char buf[1024];
1101     AVBPrint buf_script;
1102     OutputStream *ost;
1103     AVFormatContext *oc;
1104     int64_t total_size;
1105     AVCodecContext *enc;
1106     int frame_number, vid, i;
1107     double bitrate;
1108     int64_t pts = INT64_MIN;
1109     static int64_t last_time = -1;
1110     static int qp_histogram[52];
1111     int hours, mins, secs, us;
1112
1113     if (!print_stats && !is_last_report && !progress_avio)
1114         return;
1115
1116     if (!is_last_report) {
1117         if (last_time == -1) {
1118             last_time = cur_time;
1119             return;
1120         }
1121         if ((cur_time - last_time) < 500000)
1122             return;
1123         last_time = cur_time;
1124     }
1125
1126
1127     oc = output_files[0]->ctx;
1128
1129     total_size = avio_size(oc->pb);
1130     if (total_size <= 0) // FIXME improve avio_size() so it works with non seekable output too
1131         total_size = avio_tell(oc->pb);
1132
1133     buf[0] = '\0';
1134     vid = 0;
1135     av_bprint_init(&buf_script, 0, 1);
1136     for (i = 0; i < nb_output_streams; i++) {
1137         float q = -1;
1138         ost = output_streams[i];
1139         enc = ost->st->codec;
1140         if (!ost->stream_copy && enc->coded_frame)
1141             q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
1142         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1143             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1144             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1145                        ost->file_index, ost->index, q);
1146         }
1147         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1148             float fps, t = (cur_time-timer_start) / 1000000.0;
1149
1150             frame_number = ost->frame_number;
1151             fps = t > 1 ? frame_number / t : 0;
1152             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
1153                      frame_number, fps < 9.95, fps, q);
1154             av_bprintf(&buf_script, "frame=%d\n", frame_number);
1155             av_bprintf(&buf_script, "fps=%.1f\n", fps);
1156             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1157                        ost->file_index, ost->index, q);
1158             if (is_last_report)
1159                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1160             if (qp_hist) {
1161                 int j;
1162                 int qp = lrintf(q);
1163                 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
1164                     qp_histogram[qp]++;
1165                 for (j = 0; j < 32; j++)
1166                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log2(qp_histogram[j] + 1)));
1167             }
1168             if ((enc->flags&CODEC_FLAG_PSNR) && (enc->coded_frame || is_last_report)) {
1169                 int j;
1170                 double error, error_sum = 0;
1171                 double scale, scale_sum = 0;
1172                 double p;
1173                 char type[3] = { 'Y','U','V' };
1174                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1175                 for (j = 0; j < 3; j++) {
1176                     if (is_last_report) {
1177                         error = enc->error[j];
1178                         scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
1179                     } else {
1180                         error = enc->coded_frame->error[j];
1181                         scale = enc->width * enc->height * 255.0 * 255.0;
1182                     }
1183                     if (j)
1184                         scale /= 4;
1185                     error_sum += error;
1186                     scale_sum += scale;
1187                     p = psnr(error / scale);
1188                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], p);
1189                     av_bprintf(&buf_script, "stream_%d_%d_psnr_%c=%2.2f\n",
1190                                ost->file_index, ost->index, type[j] | 32, p);
1191                 }
1192                 p = psnr(error_sum / scale_sum);
1193                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
1194                 av_bprintf(&buf_script, "stream_%d_%d_psnr_all=%2.2f\n",
1195                            ost->file_index, ost->index, p);
1196             }
1197             vid = 1;
1198         }
1199         /* compute min output value */
1200         if ((is_last_report || !ost->finished) && ost->st->pts.val != AV_NOPTS_VALUE)
1201             pts = FFMAX(pts, av_rescale_q(ost->st->pts.val,
1202                                           ost->st->time_base, AV_TIME_BASE_Q));
1203     }
1204
1205     secs = pts / AV_TIME_BASE;
1206     us = pts % AV_TIME_BASE;
1207     mins = secs / 60;
1208     secs %= 60;
1209     hours = mins / 60;
1210     mins %= 60;
1211
1212     bitrate = pts && total_size >= 0 ? total_size * 8 / (pts / 1000.0) : -1;
1213
1214     if (total_size < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1215                                  "size=N/A time=");
1216     else                snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1217                                  "size=%8.0fkB time=", total_size / 1024.0);
1218     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1219              "%02d:%02d:%02d.%02d ", hours, mins, secs,
1220              (100 * us) / AV_TIME_BASE);
1221     if (bitrate < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1222                               "bitrate=N/A");
1223     else             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1224                               "bitrate=%6.1fkbits/s", bitrate);
1225     if (total_size < 0) av_bprintf(&buf_script, "total_size=N/A\n");
1226     else                av_bprintf(&buf_script, "total_size=%"PRId64"\n", total_size);
1227     av_bprintf(&buf_script, "out_time_ms=%"PRId64"\n", pts);
1228     av_bprintf(&buf_script, "out_time=%02d:%02d:%02d.%06d\n",
1229                hours, mins, secs, us);
1230
1231     if (nb_frames_dup || nb_frames_drop)
1232         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1233                 nb_frames_dup, nb_frames_drop);
1234     av_bprintf(&buf_script, "dup_frames=%d\n", nb_frames_dup);
1235     av_bprintf(&buf_script, "drop_frames=%d\n", nb_frames_drop);
1236
1237     if (print_stats || is_last_report) {
1238         if (print_stats==1 && AV_LOG_INFO > av_log_get_level()) {
1239             fprintf(stderr, "%s    \r", buf);
1240         } else
1241             av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
1242
1243     fflush(stderr);
1244     }
1245
1246     if (progress_avio) {
1247         av_bprintf(&buf_script, "progress=%s\n",
1248                    is_last_report ? "end" : "continue");
1249         avio_write(progress_avio, buf_script.str,
1250                    FFMIN(buf_script.len, buf_script.size - 1));
1251         avio_flush(progress_avio);
1252         av_bprint_finalize(&buf_script, NULL);
1253         if (is_last_report) {
1254             avio_close(progress_avio);
1255             progress_avio = NULL;
1256         }
1257     }
1258
1259     if (is_last_report) {
1260         int64_t raw= audio_size + video_size + subtitle_size + extra_size;
1261         av_log(NULL, AV_LOG_INFO, "\n");
1262         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB subtitle:%1.0f global headers:%1.0fkB muxing overhead %f%%\n",
1263                video_size / 1024.0,
1264                audio_size / 1024.0,
1265                subtitle_size / 1024.0,
1266                extra_size / 1024.0,
1267                100.0 * (total_size - raw) / raw
1268         );
1269         if(video_size + audio_size + subtitle_size + extra_size == 0){
1270             av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
1271         }
1272     }
1273 }
1274
1275 static void flush_encoders(void)
1276 {
1277     int i, ret;
1278
1279     for (i = 0; i < nb_output_streams; i++) {
1280         OutputStream   *ost = output_streams[i];
1281         AVCodecContext *enc = ost->st->codec;
1282         AVFormatContext *os = output_files[ost->file_index]->ctx;
1283         int stop_encoding = 0;
1284
1285         if (!ost->encoding_needed)
1286             continue;
1287
1288         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
1289             continue;
1290         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == AV_CODEC_ID_RAWVIDEO)
1291             continue;
1292
1293         for (;;) {
1294             int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
1295             const char *desc;
1296             int64_t *size;
1297
1298             switch (ost->st->codec->codec_type) {
1299             case AVMEDIA_TYPE_AUDIO:
1300                 encode = avcodec_encode_audio2;
1301                 desc   = "Audio";
1302                 size   = &audio_size;
1303                 break;
1304             case AVMEDIA_TYPE_VIDEO:
1305                 encode = avcodec_encode_video2;
1306                 desc   = "Video";
1307                 size   = &video_size;
1308                 break;
1309             default:
1310                 stop_encoding = 1;
1311             }
1312
1313             if (encode) {
1314                 AVPacket pkt;
1315                 int got_packet;
1316                 av_init_packet(&pkt);
1317                 pkt.data = NULL;
1318                 pkt.size = 0;
1319
1320                 update_benchmark(NULL);
1321                 ret = encode(enc, &pkt, NULL, &got_packet);
1322                 update_benchmark("flush %s %d.%d", desc, ost->file_index, ost->index);
1323                 if (ret < 0) {
1324                     av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
1325                     exit(1);
1326                 }
1327                 *size += pkt.size;
1328                 if (ost->logfile && enc->stats_out) {
1329                     fprintf(ost->logfile, "%s", enc->stats_out);
1330                 }
1331                 if (!got_packet) {
1332                     stop_encoding = 1;
1333                     break;
1334                 }
1335                 if (pkt.pts != AV_NOPTS_VALUE)
1336                     pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
1337                 if (pkt.dts != AV_NOPTS_VALUE)
1338                     pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
1339                 if (pkt.duration > 0)
1340                     pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
1341                 write_frame(os, &pkt, ost);
1342                 if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && vstats_filename) {
1343                     do_video_stats(ost, pkt.size);
1344                 }
1345             }
1346
1347             if (stop_encoding)
1348                 break;
1349         }
1350     }
1351 }
1352
1353 /*
1354  * Check whether a packet from ist should be written into ost at this time
1355  */
1356 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1357 {
1358     OutputFile *of = output_files[ost->file_index];
1359     int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
1360
1361     if (ost->source_index != ist_index)
1362         return 0;
1363
1364     if (of->start_time && ist->pts < of->start_time)
1365         return 0;
1366
1367     return 1;
1368 }
1369
1370 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1371 {
1372     OutputFile *of = output_files[ost->file_index];
1373     int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1374     AVPicture pict;
1375     AVPacket opkt;
1376
1377     av_init_packet(&opkt);
1378
1379     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1380         !ost->copy_initial_nonkeyframes)
1381         return;
1382
1383     if (!ost->frame_number && ist->pts < of->start_time &&
1384         !ost->copy_prior_start)
1385         return;
1386
1387     if (of->recording_time != INT64_MAX &&
1388         ist->pts >= of->recording_time + of->start_time) {
1389         close_output_stream(ost);
1390         return;
1391     }
1392
1393     /* force the input stream PTS */
1394     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1395         audio_size += pkt->size;
1396     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1397         video_size += pkt->size;
1398         ost->sync_opts++;
1399     } else if (ost->st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
1400         subtitle_size += pkt->size;
1401     }
1402
1403     if (pkt->pts != AV_NOPTS_VALUE)
1404         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1405     else
1406         opkt.pts = AV_NOPTS_VALUE;
1407
1408     if (pkt->dts == AV_NOPTS_VALUE)
1409         opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
1410     else
1411         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1412     opkt.dts -= ost_tb_start_time;
1413
1414     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && pkt->dts != AV_NOPTS_VALUE) {
1415         int duration = av_get_audio_frame_duration(ist->st->codec, pkt->size);
1416         if(!duration)
1417             duration = ist->st->codec->frame_size;
1418         opkt.dts = opkt.pts = av_rescale_delta(ist->st->time_base, pkt->dts,
1419                                                (AVRational){1, ist->st->codec->sample_rate}, duration, &ist->filter_in_rescale_delta_last,
1420                                                ost->st->time_base) - ost_tb_start_time;
1421     }
1422
1423     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1424     opkt.flags    = pkt->flags;
1425
1426     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1427     if (  ost->st->codec->codec_id != AV_CODEC_ID_H264
1428        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG1VIDEO
1429        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG2VIDEO
1430        && ost->st->codec->codec_id != AV_CODEC_ID_VC1
1431        ) {
1432         if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY)) {
1433             opkt.buf = av_buffer_create(opkt.data, opkt.size, av_buffer_default_free, NULL, 0);
1434             if (!opkt.buf)
1435                 exit(1);
1436         }
1437     } else {
1438         opkt.data = pkt->data;
1439         opkt.size = pkt->size;
1440     }
1441
1442     if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (of->ctx->oformat->flags & AVFMT_RAWPICTURE)) {
1443         /* store AVPicture in AVPacket, as expected by the output format */
1444         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1445         opkt.data = (uint8_t *)&pict;
1446         opkt.size = sizeof(AVPicture);
1447         opkt.flags |= AV_PKT_FLAG_KEY;
1448     }
1449
1450     write_frame(of->ctx, &opkt, ost);
1451     ost->st->codec->frame_number++;
1452 }
1453
1454 static void rate_emu_sleep(InputStream *ist)
1455 {
1456     if (input_files[ist->file_index]->rate_emu) {
1457         int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
1458         int64_t now = av_gettime() - ist->start;
1459         if (pts > now)
1460             av_usleep(pts - now);
1461     }
1462 }
1463
1464 int guess_input_channel_layout(InputStream *ist)
1465 {
1466     AVCodecContext *dec = ist->st->codec;
1467
1468     if (!dec->channel_layout) {
1469         char layout_name[256];
1470
1471         if (dec->channels > ist->guess_layout_max)
1472             return 0;
1473         dec->channel_layout = av_get_default_channel_layout(dec->channels);
1474         if (!dec->channel_layout)
1475             return 0;
1476         av_get_channel_layout_string(layout_name, sizeof(layout_name),
1477                                      dec->channels, dec->channel_layout);
1478         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for  Input Stream "
1479                "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
1480     }
1481     return 1;
1482 }
1483
1484 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1485 {
1486     AVFrame *decoded_frame, *f;
1487     AVCodecContext *avctx = ist->st->codec;
1488     int i, ret, err = 0, resample_changed;
1489     AVRational decoded_frame_tb;
1490
1491     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1492         return AVERROR(ENOMEM);
1493     if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1494         return AVERROR(ENOMEM);
1495     decoded_frame = ist->decoded_frame;
1496
1497     update_benchmark(NULL);
1498     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1499     update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
1500
1501     if (ret >= 0 && avctx->sample_rate <= 0) {
1502         av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
1503         ret = AVERROR_INVALIDDATA;
1504     }
1505
1506     if (*got_output || ret<0 || pkt->size)
1507         decode_error_stat[ret<0] ++;
1508
1509     if (!*got_output || ret < 0) {
1510         if (!pkt->size) {
1511             for (i = 0; i < ist->nb_filters; i++)
1512 #if 1
1513                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1514 #else
1515                 av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
1516 #endif
1517         }
1518         return ret;
1519     }
1520
1521 #if 1
1522     /* increment next_dts to use for the case where the input stream does not
1523        have timestamps or there are multiple frames in the packet */
1524     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1525                      avctx->sample_rate;
1526     ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1527                      avctx->sample_rate;
1528 #endif
1529
1530     rate_emu_sleep(ist);
1531
1532     resample_changed = ist->resample_sample_fmt     != decoded_frame->format         ||
1533                        ist->resample_channels       != avctx->channels               ||
1534                        ist->resample_channel_layout != decoded_frame->channel_layout ||
1535                        ist->resample_sample_rate    != decoded_frame->sample_rate;
1536     if (resample_changed) {
1537         char layout1[64], layout2[64];
1538
1539         if (!guess_input_channel_layout(ist)) {
1540             av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
1541                    "layout for Input Stream #%d.%d\n", ist->file_index,
1542                    ist->st->index);
1543             exit(1);
1544         }
1545         decoded_frame->channel_layout = avctx->channel_layout;
1546
1547         av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
1548                                      ist->resample_channel_layout);
1549         av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
1550                                      decoded_frame->channel_layout);
1551
1552         av_log(NULL, AV_LOG_INFO,
1553                "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",
1554                ist->file_index, ist->st->index,
1555                ist->resample_sample_rate,  av_get_sample_fmt_name(ist->resample_sample_fmt),
1556                ist->resample_channels, layout1,
1557                decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
1558                avctx->channels, layout2);
1559
1560         ist->resample_sample_fmt     = decoded_frame->format;
1561         ist->resample_sample_rate    = decoded_frame->sample_rate;
1562         ist->resample_channel_layout = decoded_frame->channel_layout;
1563         ist->resample_channels       = avctx->channels;
1564
1565         for (i = 0; i < nb_filtergraphs; i++)
1566             if (ist_in_filtergraph(filtergraphs[i], ist)) {
1567                 FilterGraph *fg = filtergraphs[i];
1568                 int j;
1569                 if (configure_filtergraph(fg) < 0) {
1570                     av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1571                     exit(1);
1572                 }
1573                 for (j = 0; j < fg->nb_outputs; j++) {
1574                     OutputStream *ost = fg->outputs[j]->ost;
1575                     if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
1576                         !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
1577                         av_buffersink_set_frame_size(ost->filter->filter,
1578                                                      ost->st->codec->frame_size);
1579                 }
1580             }
1581     }
1582
1583     /* if the decoder provides a pts, use it instead of the last packet pts.
1584        the decoder could be delaying output by a packet or more. */
1585     if (decoded_frame->pts != AV_NOPTS_VALUE) {
1586         ist->dts = ist->next_dts = ist->pts = ist->next_pts = av_rescale_q(decoded_frame->pts, avctx->time_base, AV_TIME_BASE_Q);
1587         decoded_frame_tb   = avctx->time_base;
1588     } else if (decoded_frame->pkt_pts != AV_NOPTS_VALUE) {
1589         decoded_frame->pts = decoded_frame->pkt_pts;
1590         pkt->pts           = AV_NOPTS_VALUE;
1591         decoded_frame_tb   = ist->st->time_base;
1592     } else if (pkt->pts != AV_NOPTS_VALUE) {
1593         decoded_frame->pts = pkt->pts;
1594         pkt->pts           = AV_NOPTS_VALUE;
1595         decoded_frame_tb   = ist->st->time_base;
1596     }else {
1597         decoded_frame->pts = ist->dts;
1598         decoded_frame_tb   = AV_TIME_BASE_Q;
1599     }
1600     if (decoded_frame->pts != AV_NOPTS_VALUE)
1601         decoded_frame->pts = av_rescale_delta(decoded_frame_tb, decoded_frame->pts,
1602                                               (AVRational){1, ist->st->codec->sample_rate}, decoded_frame->nb_samples, &ist->filter_in_rescale_delta_last,
1603                                               (AVRational){1, ist->st->codec->sample_rate});
1604     for (i = 0; i < ist->nb_filters; i++) {
1605         if (i < ist->nb_filters - 1) {
1606             f = ist->filter_frame;
1607             err = av_frame_ref(f, decoded_frame);
1608             if (err < 0)
1609                 break;
1610         } else
1611             f = decoded_frame;
1612         err = av_buffersrc_add_frame_flags(ist->filters[i]->filter, f,
1613                                      AV_BUFFERSRC_FLAG_PUSH);
1614         if (err < 0)
1615             break;
1616     }
1617     decoded_frame->pts = AV_NOPTS_VALUE;
1618
1619     av_frame_unref(ist->filter_frame);
1620     av_frame_unref(decoded_frame);
1621     return err < 0 ? err : ret;
1622 }
1623
1624 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
1625 {
1626     AVFrame *decoded_frame, *f;
1627     void *buffer_to_free = NULL;
1628     int i, ret = 0, err = 0, resample_changed;
1629     int64_t best_effort_timestamp;
1630     AVRational *frame_sample_aspect;
1631
1632     if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
1633         return AVERROR(ENOMEM);
1634     if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1635         return AVERROR(ENOMEM);
1636     decoded_frame = ist->decoded_frame;
1637     pkt->dts  = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
1638
1639     update_benchmark(NULL);
1640     ret = avcodec_decode_video2(ist->st->codec,
1641                                 decoded_frame, got_output, pkt);
1642     update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
1643
1644     if (*got_output || ret<0 || pkt->size)
1645         decode_error_stat[ret<0] ++;
1646
1647     if (!*got_output || ret < 0) {
1648         if (!pkt->size) {
1649             for (i = 0; i < ist->nb_filters; i++)
1650 #if 1
1651                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1652 #else
1653                 av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
1654 #endif
1655         }
1656         return ret;
1657     }
1658
1659     if(ist->top_field_first>=0)
1660         decoded_frame->top_field_first = ist->top_field_first;
1661
1662     best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
1663     if(best_effort_timestamp != AV_NOPTS_VALUE)
1664         ist->next_pts = ist->pts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);
1665
1666     if (debug_ts) {
1667         av_log(NULL, AV_LOG_INFO, "decoder -> ist_index:%d type:video "
1668                 "frame_pts:%s frame_pts_time:%s best_effort_ts:%"PRId64" best_effort_ts_time:%s keyframe:%d frame_type:%d \n",
1669                 ist->st->index, av_ts2str(decoded_frame->pts),
1670                 av_ts2timestr(decoded_frame->pts, &ist->st->time_base),
1671                 best_effort_timestamp,
1672                 av_ts2timestr(best_effort_timestamp, &ist->st->time_base),
1673                 decoded_frame->key_frame, decoded_frame->pict_type);
1674     }
1675
1676     pkt->size = 0;
1677
1678     rate_emu_sleep(ist);
1679
1680     if (ist->st->sample_aspect_ratio.num)
1681         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1682
1683     resample_changed = ist->resample_width   != decoded_frame->width  ||
1684                        ist->resample_height  != decoded_frame->height ||
1685                        ist->resample_pix_fmt != decoded_frame->format;
1686     if (resample_changed) {
1687         av_log(NULL, AV_LOG_INFO,
1688                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1689                ist->file_index, ist->st->index,
1690                ist->resample_width,  ist->resample_height,  av_get_pix_fmt_name(ist->resample_pix_fmt),
1691                decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
1692
1693         ist->resample_width   = decoded_frame->width;
1694         ist->resample_height  = decoded_frame->height;
1695         ist->resample_pix_fmt = decoded_frame->format;
1696
1697         for (i = 0; i < nb_filtergraphs; i++) {
1698             if (ist_in_filtergraph(filtergraphs[i], ist) && ist->reinit_filters &&
1699                 configure_filtergraph(filtergraphs[i]) < 0) {
1700                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1701                 exit(1);
1702             }
1703         }
1704     }
1705
1706     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
1707     for (i = 0; i < ist->nb_filters; i++) {
1708         if (!frame_sample_aspect->num)
1709             *frame_sample_aspect = ist->st->sample_aspect_ratio;
1710
1711         if (i < ist->nb_filters - 1) {
1712             f = ist->filter_frame;
1713             err = av_frame_ref(f, decoded_frame);
1714             if (err < 0)
1715                 break;
1716         } else
1717             f = decoded_frame;
1718         ret = av_buffersrc_add_frame_flags(ist->filters[i]->filter, f, AV_BUFFERSRC_FLAG_PUSH);
1719         if (ret < 0) {
1720             av_log(NULL, AV_LOG_FATAL,
1721                    "Failed to inject frame into filter network: %s\n", av_err2str(ret));
1722             exit(1);
1723         }
1724     }
1725
1726     av_frame_unref(ist->filter_frame);
1727     av_frame_unref(decoded_frame);
1728     av_free(buffer_to_free);
1729     return err < 0 ? err : ret;
1730 }
1731
1732 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1733 {
1734     AVSubtitle subtitle;
1735     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
1736                                           &subtitle, got_output, pkt);
1737
1738     if (*got_output || ret<0 || pkt->size)
1739         decode_error_stat[ret<0] ++;
1740
1741     if (ret < 0 || !*got_output) {
1742         if (!pkt->size)
1743             sub2video_flush(ist);
1744         return ret;
1745     }
1746
1747     if (ist->fix_sub_duration) {
1748         if (ist->prev_sub.got_output) {
1749             int end = av_rescale(subtitle.pts - ist->prev_sub.subtitle.pts,
1750                                  1000, AV_TIME_BASE);
1751             if (end < ist->prev_sub.subtitle.end_display_time) {
1752                 av_log(ist->st->codec, AV_LOG_DEBUG,
1753                        "Subtitle duration reduced from %d to %d\n",
1754                        ist->prev_sub.subtitle.end_display_time, end);
1755                 ist->prev_sub.subtitle.end_display_time = end;
1756             }
1757         }
1758         FFSWAP(int,        *got_output, ist->prev_sub.got_output);
1759         FFSWAP(int,        ret,         ist->prev_sub.ret);
1760         FFSWAP(AVSubtitle, subtitle,    ist->prev_sub.subtitle);
1761     }
1762
1763     sub2video_update(ist, &subtitle);
1764
1765     if (!*got_output || !subtitle.num_rects)
1766         return ret;
1767
1768     rate_emu_sleep(ist);
1769
1770     for (i = 0; i < nb_output_streams; i++) {
1771         OutputStream *ost = output_streams[i];
1772
1773         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1774             continue;
1775
1776         do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle);
1777     }
1778
1779     avsubtitle_free(&subtitle);
1780     return ret;
1781 }
1782
1783 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1784 static int output_packet(InputStream *ist, const AVPacket *pkt)
1785 {
1786     int ret = 0, i;
1787     int got_output = 0;
1788
1789     AVPacket avpkt;
1790     if (!ist->saw_first_ts) {
1791         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;
1792         ist->pts = 0;
1793         if (pkt != NULL && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
1794             ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1795             ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
1796         }
1797         ist->saw_first_ts = 1;
1798     }
1799
1800     if (ist->next_dts == AV_NOPTS_VALUE)
1801         ist->next_dts = ist->dts;
1802     if (ist->next_pts == AV_NOPTS_VALUE)
1803         ist->next_pts = ist->pts;
1804
1805     if (pkt == NULL) {
1806         /* EOF handling */
1807         av_init_packet(&avpkt);
1808         avpkt.data = NULL;
1809         avpkt.size = 0;
1810         goto handle_eof;
1811     } else {
1812         avpkt = *pkt;
1813     }
1814
1815     if (pkt->dts != AV_NOPTS_VALUE) {
1816         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1817         if (ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
1818             ist->next_pts = ist->pts = ist->dts;
1819     }
1820
1821     // while we have more to decode or while the decoder did output something on EOF
1822     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
1823         int duration;
1824     handle_eof:
1825
1826         ist->pts = ist->next_pts;
1827         ist->dts = ist->next_dts;
1828
1829         if (avpkt.size && avpkt.size != pkt->size) {
1830             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
1831                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1832             ist->showed_multi_packet_warning = 1;
1833         }
1834
1835         switch (ist->st->codec->codec_type) {
1836         case AVMEDIA_TYPE_AUDIO:
1837             ret = decode_audio    (ist, &avpkt, &got_output);
1838             break;
1839         case AVMEDIA_TYPE_VIDEO:
1840             ret = decode_video    (ist, &avpkt, &got_output);
1841             if (avpkt.duration) {
1842                 duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
1843             } else if(ist->st->codec->time_base.num != 0 && ist->st->codec->time_base.den != 0) {
1844                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1845                 duration = ((int64_t)AV_TIME_BASE *
1846                                 ist->st->codec->time_base.num * ticks) /
1847                                 ist->st->codec->time_base.den;
1848             } else
1849                 duration = 0;
1850
1851             if(ist->dts != AV_NOPTS_VALUE && duration) {
1852                 ist->next_dts += duration;
1853             }else
1854                 ist->next_dts = AV_NOPTS_VALUE;
1855
1856             if (got_output)
1857                 ist->next_pts += duration; //FIXME the duration is not correct in some cases
1858             break;
1859         case AVMEDIA_TYPE_SUBTITLE:
1860             ret = transcode_subtitles(ist, &avpkt, &got_output);
1861             break;
1862         default:
1863             return -1;
1864         }
1865
1866         if (ret < 0)
1867             return ret;
1868
1869         avpkt.dts=
1870         avpkt.pts= AV_NOPTS_VALUE;
1871
1872         // touch data and size only if not EOF
1873         if (pkt) {
1874             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
1875                 ret = avpkt.size;
1876             avpkt.data += ret;
1877             avpkt.size -= ret;
1878         }
1879         if (!got_output) {
1880             continue;
1881         }
1882     }
1883
1884     /* handle stream copy */
1885     if (!ist->decoding_needed) {
1886         rate_emu_sleep(ist);
1887         ist->dts = ist->next_dts;
1888         switch (ist->st->codec->codec_type) {
1889         case AVMEDIA_TYPE_AUDIO:
1890             ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1891                              ist->st->codec->sample_rate;
1892             break;
1893         case AVMEDIA_TYPE_VIDEO:
1894             if (ist->framerate.num) {
1895                 // TODO: Remove work-around for c99-to-c89 issue 7
1896                 AVRational time_base_q = AV_TIME_BASE_Q;
1897                 int64_t next_dts = av_rescale_q(ist->next_dts, time_base_q, av_inv_q(ist->framerate));
1898                 ist->next_dts = av_rescale_q(next_dts + 1, av_inv_q(ist->framerate), time_base_q);
1899             } else if (pkt->duration) {
1900                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
1901             } else if(ist->st->codec->time_base.num != 0) {
1902                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
1903                 ist->next_dts += ((int64_t)AV_TIME_BASE *
1904                                   ist->st->codec->time_base.num * ticks) /
1905                                   ist->st->codec->time_base.den;
1906             }
1907             break;
1908         }
1909         ist->pts = ist->dts;
1910         ist->next_pts = ist->next_dts;
1911     }
1912     for (i = 0; pkt && i < nb_output_streams; i++) {
1913         OutputStream *ost = output_streams[i];
1914
1915         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
1916             continue;
1917
1918         do_streamcopy(ist, ost, pkt);
1919     }
1920
1921     return 0;
1922 }
1923
1924 static void print_sdp(void)
1925 {
1926     char sdp[16384];
1927     int i;
1928     AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
1929
1930     if (!avc)
1931         exit(1);
1932     for (i = 0; i < nb_output_files; i++)
1933         avc[i] = output_files[i]->ctx;
1934
1935     av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
1936     printf("SDP:\n%s\n", sdp);
1937     fflush(stdout);
1938     av_freep(&avc);
1939 }
1940
1941 static int init_input_stream(int ist_index, char *error, int error_len)
1942 {
1943     int ret;
1944     InputStream *ist = input_streams[ist_index];
1945
1946     if (ist->decoding_needed) {
1947         AVCodec *codec = ist->dec;
1948         if (!codec) {
1949             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
1950                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
1951             return AVERROR(EINVAL);
1952         }
1953
1954         av_opt_set_int(ist->st->codec, "refcounted_frames", 1, 0);
1955
1956         if (!av_dict_get(ist->opts, "threads", NULL, 0))
1957             av_dict_set(&ist->opts, "threads", "auto", 0);
1958         if ((ret = avcodec_open2(ist->st->codec, codec, &ist->opts)) < 0) {
1959             if (ret == AVERROR_EXPERIMENTAL)
1960                 abort_codec_experimental(codec, 0);
1961             snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
1962                     ist->file_index, ist->st->index);
1963             return ret;
1964         }
1965         assert_avoptions(ist->opts);
1966     }
1967
1968     ist->next_pts = AV_NOPTS_VALUE;
1969     ist->next_dts = AV_NOPTS_VALUE;
1970     ist->is_start = 1;
1971
1972     return 0;
1973 }
1974
1975 static InputStream *get_input_stream(OutputStream *ost)
1976 {
1977     if (ost->source_index >= 0)
1978         return input_streams[ost->source_index];
1979     return NULL;
1980 }
1981
1982 static int compare_int64(const void *a, const void *b)
1983 {
1984     int64_t va = *(int64_t *)a, vb = *(int64_t *)b;
1985     return va < vb ? -1 : va > vb ? +1 : 0;
1986 }
1987
1988 static void parse_forced_key_frames(char *kf, OutputStream *ost,
1989                                     AVCodecContext *avctx)
1990 {
1991     char *p;
1992     int n = 1, i, size, index = 0;
1993     int64_t t, *pts;
1994
1995     for (p = kf; *p; p++)
1996         if (*p == ',')
1997             n++;
1998     size = n;
1999     pts = av_malloc(sizeof(*pts) * size);
2000     if (!pts) {
2001         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
2002         exit(1);
2003     }
2004
2005     p = kf;
2006     for (i = 0; i < n; i++) {
2007         char *next = strchr(p, ',');
2008
2009         if (next)
2010             *next++ = 0;
2011
2012         if (!memcmp(p, "chapters", 8)) {
2013
2014             AVFormatContext *avf = output_files[ost->file_index]->ctx;
2015             int j;
2016
2017             if (avf->nb_chapters > INT_MAX - size ||
2018                 !(pts = av_realloc_f(pts, size += avf->nb_chapters - 1,
2019                                      sizeof(*pts)))) {
2020                 av_log(NULL, AV_LOG_FATAL,
2021                        "Could not allocate forced key frames array.\n");
2022                 exit(1);
2023             }
2024             t = p[8] ? parse_time_or_die("force_key_frames", p + 8, 1) : 0;
2025             t = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
2026
2027             for (j = 0; j < avf->nb_chapters; j++) {
2028                 AVChapter *c = avf->chapters[j];
2029                 av_assert1(index < size);
2030                 pts[index++] = av_rescale_q(c->start, c->time_base,
2031                                             avctx->time_base) + t;
2032             }
2033
2034         } else {
2035
2036             t = parse_time_or_die("force_key_frames", p, 1);
2037             av_assert1(index < size);
2038             pts[index++] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
2039
2040         }
2041
2042         p = next;
2043     }
2044
2045     av_assert0(index == size);
2046     qsort(pts, size, sizeof(*pts), compare_int64);
2047     ost->forced_kf_count = size;
2048     ost->forced_kf_pts   = pts;
2049 }
2050
2051 static void report_new_stream(int input_index, AVPacket *pkt)
2052 {
2053     InputFile *file = input_files[input_index];
2054     AVStream *st = file->ctx->streams[pkt->stream_index];
2055
2056     if (pkt->stream_index < file->nb_streams_warn)
2057         return;
2058     av_log(file->ctx, AV_LOG_WARNING,
2059            "New %s stream %d:%d at pos:%"PRId64" and DTS:%ss\n",
2060            av_get_media_type_string(st->codec->codec_type),
2061            input_index, pkt->stream_index,
2062            pkt->pos, av_ts2timestr(pkt->dts, &st->time_base));
2063     file->nb_streams_warn = pkt->stream_index + 1;
2064 }
2065
2066 static int transcode_init(void)
2067 {
2068     int ret = 0, i, j, k;
2069     AVFormatContext *oc;
2070     AVCodecContext *codec;
2071     OutputStream *ost;
2072     InputStream *ist;
2073     char error[1024];
2074     int want_sdp = 1;
2075
2076     /* init framerate emulation */
2077     for (i = 0; i < nb_input_files; i++) {
2078         InputFile *ifile = input_files[i];
2079         if (ifile->rate_emu)
2080             for (j = 0; j < ifile->nb_streams; j++)
2081                 input_streams[j + ifile->ist_index]->start = av_gettime();
2082     }
2083
2084     /* output stream init */
2085     for (i = 0; i < nb_output_files; i++) {
2086         oc = output_files[i]->ctx;
2087         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2088             av_dump_format(oc, i, oc->filename, 1);
2089             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2090             return AVERROR(EINVAL);
2091         }
2092     }
2093
2094     /* init complex filtergraphs */
2095     for (i = 0; i < nb_filtergraphs; i++)
2096         if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
2097             return ret;
2098
2099     /* for each output stream, we compute the right encoding parameters */
2100     for (i = 0; i < nb_output_streams; i++) {
2101         AVCodecContext *icodec = NULL;
2102         ost = output_streams[i];
2103         oc  = output_files[ost->file_index]->ctx;
2104         ist = get_input_stream(ost);
2105
2106         if (ost->attachment_filename)
2107             continue;
2108
2109         codec  = ost->st->codec;
2110
2111         if (ist) {
2112             icodec = ist->st->codec;
2113
2114             ost->st->disposition          = ist->st->disposition;
2115             codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
2116             codec->chroma_sample_location = icodec->chroma_sample_location;
2117         }
2118
2119         if (ost->stream_copy) {
2120             uint64_t extra_size;
2121
2122             av_assert0(ist && !ost->filter);
2123
2124             extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2125
2126             if (extra_size > INT_MAX) {
2127                 return AVERROR(EINVAL);
2128             }
2129
2130             /* if stream_copy is selected, no need to decode or encode */
2131             codec->codec_id   = icodec->codec_id;
2132             codec->codec_type = icodec->codec_type;
2133
2134             if (!codec->codec_tag) {
2135                 unsigned int codec_tag;
2136                 if (!oc->oformat->codec_tag ||
2137                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2138                      !av_codec_get_tag2(oc->oformat->codec_tag, icodec->codec_id, &codec_tag))
2139                     codec->codec_tag = icodec->codec_tag;
2140             }
2141
2142             codec->bit_rate       = icodec->bit_rate;
2143             codec->rc_max_rate    = icodec->rc_max_rate;
2144             codec->rc_buffer_size = icodec->rc_buffer_size;
2145             codec->field_order    = icodec->field_order;
2146             codec->extradata      = av_mallocz(extra_size);
2147             if (!codec->extradata) {
2148                 return AVERROR(ENOMEM);
2149             }
2150             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2151             codec->extradata_size= icodec->extradata_size;
2152             codec->bits_per_coded_sample  = icodec->bits_per_coded_sample;
2153
2154             codec->time_base = ist->st->time_base;
2155             /*
2156              * Avi is a special case here because it supports variable fps but
2157              * having the fps and timebase differe significantly adds quite some
2158              * overhead
2159              */
2160             if(!strcmp(oc->oformat->name, "avi")) {
2161                 if ( copy_tb<0 && av_q2d(ist->st->r_frame_rate) >= av_q2d(ist->st->avg_frame_rate)
2162                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(ist->st->time_base)
2163                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(icodec->time_base)
2164                                && av_q2d(ist->st->time_base) < 1.0/500 && av_q2d(icodec->time_base) < 1.0/500
2165                      || copy_tb==2){
2166                     codec->time_base.num = ist->st->r_frame_rate.den;
2167                     codec->time_base.den = 2*ist->st->r_frame_rate.num;
2168                     codec->ticks_per_frame = 2;
2169                 } else if (   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*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                     codec->time_base.den *= 2;
2175                     codec->ticks_per_frame = 2;
2176                 }
2177             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2178                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2179                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2180                       && strcmp(oc->oformat->name, "f4v")
2181             ) {
2182                 if(   copy_tb<0 && icodec->time_base.den
2183                                 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
2184                                 && av_q2d(ist->st->time_base) < 1.0/500
2185                    || copy_tb==0){
2186                     codec->time_base = icodec->time_base;
2187                     codec->time_base.num *= icodec->ticks_per_frame;
2188                 }
2189             }
2190             if (   codec->codec_tag == AV_RL32("tmcd")
2191                 && icodec->time_base.num < icodec->time_base.den
2192                 && icodec->time_base.num > 0
2193                 && 121LL*icodec->time_base.num > icodec->time_base.den) {
2194                 codec->time_base = icodec->time_base;
2195             }
2196
2197             if (ist && !ost->frame_rate.num)
2198                 ost->frame_rate = ist->framerate;
2199             if(ost->frame_rate.num)
2200                 codec->time_base = av_inv_q(ost->frame_rate);
2201
2202             av_reduce(&codec->time_base.num, &codec->time_base.den,
2203                         codec->time_base.num, codec->time_base.den, INT_MAX);
2204
2205             switch (codec->codec_type) {
2206             case AVMEDIA_TYPE_AUDIO:
2207                 if (audio_volume != 256) {
2208                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2209                     exit(1);
2210                 }
2211                 codec->channel_layout     = icodec->channel_layout;
2212                 codec->sample_rate        = icodec->sample_rate;
2213                 codec->channels           = icodec->channels;
2214                 codec->frame_size         = icodec->frame_size;
2215                 codec->audio_service_type = icodec->audio_service_type;
2216                 codec->block_align        = icodec->block_align;
2217                 if((codec->block_align == 1 || codec->block_align == 1152 || codec->block_align == 576) && codec->codec_id == AV_CODEC_ID_MP3)
2218                     codec->block_align= 0;
2219                 if(codec->codec_id == AV_CODEC_ID_AC3)
2220                     codec->block_align= 0;
2221                 break;
2222             case AVMEDIA_TYPE_VIDEO:
2223                 codec->pix_fmt            = icodec->pix_fmt;
2224                 codec->width              = icodec->width;
2225                 codec->height             = icodec->height;
2226                 codec->has_b_frames       = icodec->has_b_frames;
2227                 if (ost->frame_aspect_ratio.num) { // overridden by the -aspect cli option
2228                     codec->sample_aspect_ratio   =
2229                     ost->st->sample_aspect_ratio =
2230                         av_mul_q(ost->frame_aspect_ratio,
2231                                  (AVRational){ codec->height, codec->width });
2232                     av_log(NULL, AV_LOG_WARNING, "Overriding aspect ratio "
2233                            "with stream copy may produce invalid files\n");
2234                 } else if (!codec->sample_aspect_ratio.num) {
2235                     codec->sample_aspect_ratio   =
2236                     ost->st->sample_aspect_ratio =
2237                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2238                         ist->st->codec->sample_aspect_ratio.num ?
2239                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2240                 }
2241                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2242                 break;
2243             case AVMEDIA_TYPE_SUBTITLE:
2244                 codec->width  = icodec->width;
2245                 codec->height = icodec->height;
2246                 break;
2247             case AVMEDIA_TYPE_DATA:
2248             case AVMEDIA_TYPE_ATTACHMENT:
2249                 break;
2250             default:
2251                 abort();
2252             }
2253         } else {
2254             if (!ost->enc)
2255                 ost->enc = avcodec_find_encoder(codec->codec_id);
2256             if (!ost->enc) {
2257                 /* should only happen when a default codec is not present. */
2258                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
2259                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2260                 ret = AVERROR(EINVAL);
2261                 goto dump_format;
2262             }
2263
2264             if (ist)
2265                 ist->decoding_needed++;
2266             ost->encoding_needed = 1;
2267
2268             if (!ost->filter &&
2269                 (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2270                  codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
2271                     FilterGraph *fg;
2272                     fg = init_simple_filtergraph(ist, ost);
2273                     if (configure_filtergraph(fg)) {
2274                         av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2275                         exit(1);
2276                     }
2277             }
2278
2279             if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2280                 if (ost->filter && !ost->frame_rate.num)
2281                     ost->frame_rate = av_buffersink_get_frame_rate(ost->filter->filter);
2282                 if (ist && !ost->frame_rate.num)
2283                     ost->frame_rate = ist->framerate;
2284                 if (ist && !ost->frame_rate.num)
2285                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25, 1};
2286 //                    ost->frame_rate = ist->st->avg_frame_rate.num ? ist->st->avg_frame_rate : (AVRational){25, 1};
2287                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2288                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2289                     ost->frame_rate = ost->enc->supported_framerates[idx];
2290                 }
2291             }
2292
2293             switch (codec->codec_type) {
2294             case AVMEDIA_TYPE_AUDIO:
2295                 codec->sample_fmt     = ost->filter->filter->inputs[0]->format;
2296                 codec->sample_rate    = ost->filter->filter->inputs[0]->sample_rate;
2297                 codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
2298                 codec->channels       = avfilter_link_get_channels(ost->filter->filter->inputs[0]);
2299                 codec->time_base      = (AVRational){ 1, codec->sample_rate };
2300                 break;
2301             case AVMEDIA_TYPE_VIDEO:
2302                 codec->time_base = av_inv_q(ost->frame_rate);
2303                 if (ost->filter && !(codec->time_base.num && codec->time_base.den))
2304                     codec->time_base = ost->filter->filter->inputs[0]->time_base;
2305                 if (   av_q2d(codec->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
2306                    && (video_sync_method == VSYNC_CFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
2307                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
2308                                                "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
2309                 }
2310                 for (j = 0; j < ost->forced_kf_count; j++)
2311                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2312                                                          AV_TIME_BASE_Q,
2313                                                          codec->time_base);
2314
2315                 codec->width  = ost->filter->filter->inputs[0]->w;
2316                 codec->height = ost->filter->filter->inputs[0]->h;
2317                 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
2318                     ost->frame_aspect_ratio.num ? // overridden by the -aspect cli option
2319                     av_mul_q(ost->frame_aspect_ratio, (AVRational){ codec->height, codec->width }) :
2320                     ost->filter->filter->inputs[0]->sample_aspect_ratio;
2321                 if (!strncmp(ost->enc->name, "libx264", 7) &&
2322                     codec->pix_fmt == AV_PIX_FMT_NONE &&
2323                     ost->filter->filter->inputs[0]->format != AV_PIX_FMT_YUV420P)
2324                     av_log(NULL, AV_LOG_INFO,
2325                            "No pixel format specified, %s for H.264 encoding chosen.\n"
2326                            "Use -pix_fmt yuv420p for compatibility with outdated media players.\n",
2327                            av_get_pix_fmt_name(ost->filter->filter->inputs[0]->format));
2328                 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
2329
2330                 if (!icodec ||
2331                     codec->width   != icodec->width  ||
2332                     codec->height  != icodec->height ||
2333                     codec->pix_fmt != icodec->pix_fmt) {
2334                     codec->bits_per_raw_sample = frame_bits_per_raw_sample;
2335                 }
2336
2337                 if (ost->forced_keyframes) {
2338                     if (!strncmp(ost->forced_keyframes, "expr:", 5)) {
2339                         ret = av_expr_parse(&ost->forced_keyframes_pexpr, ost->forced_keyframes+5,
2340                                             forced_keyframes_const_names, NULL, NULL, NULL, NULL, 0, NULL);
2341                         if (ret < 0) {
2342                             av_log(NULL, AV_LOG_ERROR,
2343                                    "Invalid force_key_frames expression '%s'\n", ost->forced_keyframes+5);
2344                             return ret;
2345                         }
2346                         ost->forced_keyframes_expr_const_values[FKF_N] = 0;
2347                         ost->forced_keyframes_expr_const_values[FKF_N_FORCED] = 0;
2348                         ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] = NAN;
2349                         ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] = NAN;
2350                     } else {
2351                         parse_forced_key_frames(ost->forced_keyframes, ost, ost->st->codec);
2352                     }
2353                 }
2354                 break;
2355             case AVMEDIA_TYPE_SUBTITLE:
2356                 codec->time_base = (AVRational){1, 1000};
2357                 if (!codec->width) {
2358                     codec->width     = input_streams[ost->source_index]->st->codec->width;
2359                     codec->height    = input_streams[ost->source_index]->st->codec->height;
2360                 }
2361                 break;
2362             default:
2363                 abort();
2364                 break;
2365             }
2366             /* two pass mode */
2367             if (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
2368                 char logfilename[1024];
2369                 FILE *f;
2370
2371                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2372                          ost->logfile_prefix ? ost->logfile_prefix :
2373                                                DEFAULT_PASS_LOGFILENAME_PREFIX,
2374                          i);
2375                 if (!strcmp(ost->enc->name, "libx264")) {
2376                     av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
2377                 } else {
2378                     if (codec->flags & CODEC_FLAG_PASS2) {
2379                         char  *logbuffer;
2380                         size_t logbuffer_size;
2381                         if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2382                             av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2383                                    logfilename);
2384                             exit(1);
2385                         }
2386                         codec->stats_in = logbuffer;
2387                     }
2388                     if (codec->flags & CODEC_FLAG_PASS1) {
2389                         f = fopen(logfilename, "wb");
2390                         if (!f) {
2391                             av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2392                                 logfilename, strerror(errno));
2393                             exit(1);
2394                         }
2395                         ost->logfile = f;
2396                     }
2397                 }
2398             }
2399         }
2400     }
2401
2402     /* open each encoder */
2403     for (i = 0; i < nb_output_streams; i++) {
2404         ost = output_streams[i];
2405         if (ost->encoding_needed) {
2406             AVCodec      *codec = ost->enc;
2407             AVCodecContext *dec = NULL;
2408
2409             if ((ist = get_input_stream(ost)))
2410                 dec = ist->st->codec;
2411             if (dec && dec->subtitle_header) {
2412                 /* ASS code assumes this buffer is null terminated so add extra byte. */
2413                 ost->st->codec->subtitle_header = av_mallocz(dec->subtitle_header_size + 1);
2414                 if (!ost->st->codec->subtitle_header) {
2415                     ret = AVERROR(ENOMEM);
2416                     goto dump_format;
2417                 }
2418                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2419                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2420             }
2421             if (!av_dict_get(ost->opts, "threads", NULL, 0))
2422                 av_dict_set(&ost->opts, "threads", "auto", 0);
2423             if ((ret = avcodec_open2(ost->st->codec, codec, &ost->opts)) < 0) {
2424                 if (ret == AVERROR_EXPERIMENTAL)
2425                     abort_codec_experimental(codec, 1);
2426                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2427                         ost->file_index, ost->index);
2428                 goto dump_format;
2429             }
2430             if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
2431                 !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
2432                 av_buffersink_set_frame_size(ost->filter->filter,
2433                                              ost->st->codec->frame_size);
2434             assert_avoptions(ost->opts);
2435             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2436                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2437                                              " It takes bits/s as argument, not kbits/s\n");
2438             extra_size += ost->st->codec->extradata_size;
2439
2440             if (ost->st->codec->me_threshold)
2441                 input_streams[ost->source_index]->st->codec->debug |= FF_DEBUG_MV;
2442         } else {
2443             av_opt_set_dict(ost->st->codec, &ost->opts);
2444         }
2445     }
2446
2447     /* init input streams */
2448     for (i = 0; i < nb_input_streams; i++)
2449         if ((ret = init_input_stream(i, error, sizeof(error))) < 0) {
2450             for (i = 0; i < nb_output_streams; i++) {
2451                 ost = output_streams[i];
2452                 avcodec_close(ost->st->codec);
2453             }
2454             goto dump_format;
2455         }
2456
2457     /* discard unused programs */
2458     for (i = 0; i < nb_input_files; i++) {
2459         InputFile *ifile = input_files[i];
2460         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2461             AVProgram *p = ifile->ctx->programs[j];
2462             int discard  = AVDISCARD_ALL;
2463
2464             for (k = 0; k < p->nb_stream_indexes; k++)
2465                 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
2466                     discard = AVDISCARD_DEFAULT;
2467                     break;
2468                 }
2469             p->discard = discard;
2470         }
2471     }
2472
2473     /* open files and write file headers */
2474     for (i = 0; i < nb_output_files; i++) {
2475         oc = output_files[i]->ctx;
2476         oc->interrupt_callback = int_cb;
2477         if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
2478             char errbuf[128];
2479             const char *errbuf_ptr = errbuf;
2480             if (av_strerror(ret, errbuf, sizeof(errbuf)) < 0)
2481                 errbuf_ptr = strerror(AVUNERROR(ret));
2482             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?): %s", i, errbuf_ptr);
2483             ret = AVERROR(EINVAL);
2484             goto dump_format;
2485         }
2486 //         assert_avoptions(output_files[i]->opts);
2487         if (strcmp(oc->oformat->name, "rtp")) {
2488             want_sdp = 0;
2489         }
2490     }
2491
2492  dump_format:
2493     /* dump the file output parameters - cannot be done before in case
2494        of stream copy */
2495     for (i = 0; i < nb_output_files; i++) {
2496         av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
2497     }
2498
2499     /* dump the stream mapping */
2500     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2501     for (i = 0; i < nb_input_streams; i++) {
2502         ist = input_streams[i];
2503
2504         for (j = 0; j < ist->nb_filters; j++) {
2505             if (ist->filters[j]->graph->graph_desc) {
2506                 av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
2507                        ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
2508                        ist->filters[j]->name);
2509                 if (nb_filtergraphs > 1)
2510                     av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
2511                 av_log(NULL, AV_LOG_INFO, "\n");
2512             }
2513         }
2514     }
2515
2516     for (i = 0; i < nb_output_streams; i++) {
2517         ost = output_streams[i];
2518
2519         if (ost->attachment_filename) {
2520             /* an attached file */
2521             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
2522                    ost->attachment_filename, ost->file_index, ost->index);
2523             continue;
2524         }
2525
2526         if (ost->filter && ost->filter->graph->graph_desc) {
2527             /* output from a complex graph */
2528             av_log(NULL, AV_LOG_INFO, "  %s", ost->filter->name);
2529             if (nb_filtergraphs > 1)
2530                 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
2531
2532             av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
2533                    ost->index, ost->enc ? ost->enc->name : "?");
2534             continue;
2535         }
2536
2537         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
2538                input_streams[ost->source_index]->file_index,
2539                input_streams[ost->source_index]->st->index,
2540                ost->file_index,
2541                ost->index);
2542         if (ost->sync_ist != input_streams[ost->source_index])
2543             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2544                    ost->sync_ist->file_index,
2545                    ost->sync_ist->st->index);
2546         if (ost->stream_copy)
2547             av_log(NULL, AV_LOG_INFO, " (copy)");
2548         else
2549             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
2550                    input_streams[ost->source_index]->dec->name : "?",
2551                    ost->enc ? ost->enc->name : "?");
2552         av_log(NULL, AV_LOG_INFO, "\n");
2553     }
2554
2555     if (ret) {
2556         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2557         return ret;
2558     }
2559
2560     if (want_sdp) {
2561         print_sdp();
2562     }
2563
2564     return 0;
2565 }
2566
2567 /* Return 1 if there remain streams where more output is wanted, 0 otherwise. */
2568 static int need_output(void)
2569 {
2570     int i;
2571
2572     for (i = 0; i < nb_output_streams; i++) {
2573         OutputStream *ost    = output_streams[i];
2574         OutputFile *of       = output_files[ost->file_index];
2575         AVFormatContext *os  = output_files[ost->file_index]->ctx;
2576
2577         if (ost->finished ||
2578             (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2579             continue;
2580         if (ost->frame_number >= ost->max_frames) {
2581             int j;
2582             for (j = 0; j < of->ctx->nb_streams; j++)
2583                 close_output_stream(output_streams[of->ost_index + j]);
2584             continue;
2585         }
2586
2587         return 1;
2588     }
2589
2590     return 0;
2591 }
2592
2593 /**
2594  * Select the output stream to process.
2595  *
2596  * @return  selected output stream, or NULL if none available
2597  */
2598 static OutputStream *choose_output(void)
2599 {
2600     int i;
2601     int64_t opts_min = INT64_MAX;
2602     OutputStream *ost_min = NULL;
2603
2604     for (i = 0; i < nb_output_streams; i++) {
2605         OutputStream *ost = output_streams[i];
2606         int64_t opts = av_rescale_q(ost->st->cur_dts, ost->st->time_base,
2607                                     AV_TIME_BASE_Q);
2608         if (!ost->unavailable && !ost->finished && opts < opts_min) {
2609             opts_min = opts;
2610             ost_min  = ost;
2611         }
2612     }
2613     return ost_min;
2614 }
2615
2616 static int check_keyboard_interaction(int64_t cur_time)
2617 {
2618     int i, ret, key;
2619     static int64_t last_time;
2620     if (received_nb_signals)
2621         return AVERROR_EXIT;
2622     /* read_key() returns 0 on EOF */
2623     if(cur_time - last_time >= 100000 && !run_as_daemon){
2624         key =  read_key();
2625         last_time = cur_time;
2626     }else
2627         key = -1;
2628     if (key == 'q')
2629         return AVERROR_EXIT;
2630     if (key == '+') av_log_set_level(av_log_get_level()+10);
2631     if (key == '-') av_log_set_level(av_log_get_level()-10);
2632     if (key == 's') qp_hist     ^= 1;
2633     if (key == 'h'){
2634         if (do_hex_dump){
2635             do_hex_dump = do_pkt_dump = 0;
2636         } else if(do_pkt_dump){
2637             do_hex_dump = 1;
2638         } else
2639             do_pkt_dump = 1;
2640         av_log_set_level(AV_LOG_DEBUG);
2641     }
2642     if (key == 'c' || key == 'C'){
2643         char buf[4096], target[64], command[256], arg[256] = {0};
2644         double time;
2645         int k, n = 0;
2646         fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
2647         i = 0;
2648         while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
2649             if (k > 0)
2650                 buf[i++] = k;
2651         buf[i] = 0;
2652         if (k > 0 &&
2653             (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
2654             av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
2655                    target, time, command, arg);
2656             for (i = 0; i < nb_filtergraphs; i++) {
2657                 FilterGraph *fg = filtergraphs[i];
2658                 if (fg->graph) {
2659                     if (time < 0) {
2660                         ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
2661                                                           key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
2662                         fprintf(stderr, "Command reply for stream %d: ret:%d res:%s\n", i, ret, buf);
2663                     } else {
2664                         ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
2665                     }
2666                 }
2667             }
2668         } else {
2669             av_log(NULL, AV_LOG_ERROR,
2670                    "Parse error, at least 3 arguments were expected, "
2671                    "only %d given in string '%s'\n", n, buf);
2672         }
2673     }
2674     if (key == 'd' || key == 'D'){
2675         int debug=0;
2676         if(key == 'D') {
2677             debug = input_streams[0]->st->codec->debug<<1;
2678             if(!debug) debug = 1;
2679             while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2680                 debug += debug;
2681         }else
2682             if(scanf("%d", &debug)!=1)
2683                 fprintf(stderr,"error parsing debug value\n");
2684         for(i=0;i<nb_input_streams;i++) {
2685             input_streams[i]->st->codec->debug = debug;
2686         }
2687         for(i=0;i<nb_output_streams;i++) {
2688             OutputStream *ost = output_streams[i];
2689             ost->st->codec->debug = debug;
2690         }
2691         if(debug) av_log_set_level(AV_LOG_DEBUG);
2692         fprintf(stderr,"debug=%d\n", debug);
2693     }
2694     if (key == '?'){
2695         fprintf(stderr, "key    function\n"
2696                         "?      show this help\n"
2697                         "+      increase verbosity\n"
2698                         "-      decrease verbosity\n"
2699                         "c      Send command to filtergraph\n"
2700                         "D      cycle through available debug modes\n"
2701                         "h      dump packets/hex press to cycle through the 3 states\n"
2702                         "q      quit\n"
2703                         "s      Show QP histogram\n"
2704         );
2705     }
2706     return 0;
2707 }
2708
2709 #if HAVE_PTHREADS
2710 static void *input_thread(void *arg)
2711 {
2712     InputFile *f = arg;
2713     int ret = 0;
2714
2715     while (!transcoding_finished && ret >= 0) {
2716         AVPacket pkt;
2717         ret = av_read_frame(f->ctx, &pkt);
2718
2719         if (ret == AVERROR(EAGAIN)) {
2720             av_usleep(10000);
2721             ret = 0;
2722             continue;
2723         } else if (ret < 0)
2724             break;
2725
2726         pthread_mutex_lock(&f->fifo_lock);
2727         while (!av_fifo_space(f->fifo))
2728             pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
2729
2730         av_dup_packet(&pkt);
2731         av_fifo_generic_write(f->fifo, &pkt, sizeof(pkt), NULL);
2732
2733         pthread_mutex_unlock(&f->fifo_lock);
2734     }
2735
2736     f->finished = 1;
2737     return NULL;
2738 }
2739
2740 static void free_input_threads(void)
2741 {
2742     int i;
2743
2744     if (nb_input_files == 1)
2745         return;
2746
2747     transcoding_finished = 1;
2748
2749     for (i = 0; i < nb_input_files; i++) {
2750         InputFile *f = input_files[i];
2751         AVPacket pkt;
2752
2753         if (!f->fifo || f->joined)
2754             continue;
2755
2756         pthread_mutex_lock(&f->fifo_lock);
2757         while (av_fifo_size(f->fifo)) {
2758             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2759             av_free_packet(&pkt);
2760         }
2761         pthread_cond_signal(&f->fifo_cond);
2762         pthread_mutex_unlock(&f->fifo_lock);
2763
2764         pthread_join(f->thread, NULL);
2765         f->joined = 1;
2766
2767         while (av_fifo_size(f->fifo)) {
2768             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2769             av_free_packet(&pkt);
2770         }
2771         av_fifo_free(f->fifo);
2772     }
2773 }
2774
2775 static int init_input_threads(void)
2776 {
2777     int i, ret;
2778
2779     if (nb_input_files == 1)
2780         return 0;
2781
2782     for (i = 0; i < nb_input_files; i++) {
2783         InputFile *f = input_files[i];
2784
2785         if (!(f->fifo = av_fifo_alloc(8*sizeof(AVPacket))))
2786             return AVERROR(ENOMEM);
2787
2788         pthread_mutex_init(&f->fifo_lock, NULL);
2789         pthread_cond_init (&f->fifo_cond, NULL);
2790
2791         if ((ret = pthread_create(&f->thread, NULL, input_thread, f)))
2792             return AVERROR(ret);
2793     }
2794     return 0;
2795 }
2796
2797 static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
2798 {
2799     int ret = 0;
2800
2801     pthread_mutex_lock(&f->fifo_lock);
2802
2803     if (av_fifo_size(f->fifo)) {
2804         av_fifo_generic_read(f->fifo, pkt, sizeof(*pkt), NULL);
2805         pthread_cond_signal(&f->fifo_cond);
2806     } else {
2807         if (f->finished)
2808             ret = AVERROR_EOF;
2809         else
2810             ret = AVERROR(EAGAIN);
2811     }
2812
2813     pthread_mutex_unlock(&f->fifo_lock);
2814
2815     return ret;
2816 }
2817 #endif
2818
2819 static int get_input_packet(InputFile *f, AVPacket *pkt)
2820 {
2821 #if HAVE_PTHREADS
2822     if (nb_input_files > 1)
2823         return get_input_packet_mt(f, pkt);
2824 #endif
2825     return av_read_frame(f->ctx, pkt);
2826 }
2827
2828 static int got_eagain(void)
2829 {
2830     int i;
2831     for (i = 0; i < nb_output_streams; i++)
2832         if (output_streams[i]->unavailable)
2833             return 1;
2834     return 0;
2835 }
2836
2837 static void reset_eagain(void)
2838 {
2839     int i;
2840     for (i = 0; i < nb_input_files; i++)
2841         input_files[i]->eagain = 0;
2842     for (i = 0; i < nb_output_streams; i++)
2843         output_streams[i]->unavailable = 0;
2844 }
2845
2846 /*
2847  * Return
2848  * - 0 -- one packet was read and processed
2849  * - AVERROR(EAGAIN) -- no packets were available for selected file,
2850  *   this function should be called again
2851  * - AVERROR_EOF -- this function should not be called again
2852  */
2853 static int process_input(int file_index)
2854 {
2855     InputFile *ifile = input_files[file_index];
2856     AVFormatContext *is;
2857     InputStream *ist;
2858     AVPacket pkt;
2859     int ret, i, j;
2860
2861     is  = ifile->ctx;
2862     ret = get_input_packet(ifile, &pkt);
2863
2864     if (ret == AVERROR(EAGAIN)) {
2865         ifile->eagain = 1;
2866         return ret;
2867     }
2868     if (ret < 0) {
2869         if (ret != AVERROR_EOF) {
2870             print_error(is->filename, ret);
2871             if (exit_on_error)
2872                 exit(1);
2873         }
2874         ifile->eof_reached = 1;
2875
2876         for (i = 0; i < ifile->nb_streams; i++) {
2877             ist = input_streams[ifile->ist_index + i];
2878             if (ist->decoding_needed)
2879                 output_packet(ist, NULL);
2880
2881             /* mark all outputs that don't go through lavfi as finished */
2882             for (j = 0; j < nb_output_streams; j++) {
2883                 OutputStream *ost = output_streams[j];
2884
2885                 if (ost->source_index == ifile->ist_index + i &&
2886                     (ost->stream_copy || ost->enc->type == AVMEDIA_TYPE_SUBTITLE))
2887                     close_output_stream(ost);
2888             }
2889         }
2890
2891         return AVERROR(EAGAIN);
2892     }
2893
2894     reset_eagain();
2895
2896     if (do_pkt_dump) {
2897         av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2898                          is->streams[pkt.stream_index]);
2899     }
2900     /* the following test is needed in case new streams appear
2901        dynamically in stream : we ignore them */
2902     if (pkt.stream_index >= ifile->nb_streams) {
2903         report_new_stream(file_index, &pkt);
2904         goto discard_packet;
2905     }
2906
2907     ist = input_streams[ifile->ist_index + pkt.stream_index];
2908     if (ist->discard)
2909         goto discard_packet;
2910
2911     if (debug_ts) {
2912         av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
2913                "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",
2914                ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
2915                av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &AV_TIME_BASE_Q),
2916                av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &AV_TIME_BASE_Q),
2917                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
2918                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
2919                av_ts2str(input_files[ist->file_index]->ts_offset),
2920                av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
2921     }
2922
2923     if(!ist->wrap_correction_done && is->start_time != AV_NOPTS_VALUE && ist->st->pts_wrap_bits < 64){
2924         int64_t stime, stime2;
2925         // Correcting starttime based on the enabled streams
2926         // 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.
2927         //       so we instead do it here as part of discontinuity handling
2928         if (   ist->next_dts == AV_NOPTS_VALUE
2929             && ifile->ts_offset == -is->start_time
2930             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2931             int64_t new_start_time = INT64_MAX;
2932             for (i=0; i<is->nb_streams; i++) {
2933                 AVStream *st = is->streams[i];
2934                 if(st->discard == AVDISCARD_ALL || st->start_time == AV_NOPTS_VALUE)
2935                     continue;
2936                 new_start_time = FFMIN(new_start_time, av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q));
2937             }
2938             if (new_start_time > is->start_time) {
2939                 av_log(is, AV_LOG_VERBOSE, "Correcting start time by %"PRId64"\n", new_start_time - is->start_time);
2940                 ifile->ts_offset = -new_start_time;
2941             }
2942         }
2943
2944         stime = av_rescale_q(is->start_time, AV_TIME_BASE_Q, ist->st->time_base);
2945         stime2= stime + (1ULL<<ist->st->pts_wrap_bits);
2946         ist->wrap_correction_done = 1;
2947
2948         if(stime2 > stime && pkt.dts != AV_NOPTS_VALUE && pkt.dts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
2949             pkt.dts -= 1ULL<<ist->st->pts_wrap_bits;
2950             ist->wrap_correction_done = 0;
2951         }
2952         if(stime2 > stime && pkt.pts != AV_NOPTS_VALUE && pkt.pts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
2953             pkt.pts -= 1ULL<<ist->st->pts_wrap_bits;
2954             ist->wrap_correction_done = 0;
2955         }
2956     }
2957
2958     if (pkt.dts != AV_NOPTS_VALUE)
2959         pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2960     if (pkt.pts != AV_NOPTS_VALUE)
2961         pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2962
2963     if (pkt.pts != AV_NOPTS_VALUE)
2964         pkt.pts *= ist->ts_scale;
2965     if (pkt.dts != AV_NOPTS_VALUE)
2966         pkt.dts *= ist->ts_scale;
2967
2968     if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts == AV_NOPTS_VALUE && !copy_ts
2969         && (is->iformat->flags & AVFMT_TS_DISCONT) && ifile->last_ts != AV_NOPTS_VALUE) {
2970         int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2971         int64_t delta   = pkt_dts - ifile->last_ts;
2972         if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
2973             (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
2974                 ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)){
2975             ifile->ts_offset -= delta;
2976             av_log(NULL, AV_LOG_DEBUG,
2977                    "Inter stream timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2978                    delta, ifile->ts_offset);
2979             pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2980             if (pkt.pts != AV_NOPTS_VALUE)
2981                 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2982         }
2983     }
2984
2985     if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE &&
2986         !copy_ts) {
2987         int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2988         int64_t delta   = pkt_dts - ist->next_dts;
2989         if (is->iformat->flags & AVFMT_TS_DISCONT) {
2990         if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
2991             (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
2992                 ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
2993             pkt_dts+1<ist->pts){
2994             ifile->ts_offset -= delta;
2995             av_log(NULL, AV_LOG_DEBUG,
2996                    "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2997                    delta, ifile->ts_offset);
2998             pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2999             if (pkt.pts != AV_NOPTS_VALUE)
3000                 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3001         }
3002         } else {
3003             if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3004                 (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
3005                ) {
3006                 av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
3007                 pkt.dts = AV_NOPTS_VALUE;
3008             }
3009             if (pkt.pts != AV_NOPTS_VALUE){
3010                 int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
3011                 delta   = pkt_pts - ist->next_dts;
3012                 if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3013                     (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
3014                    ) {
3015                     av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
3016                     pkt.pts = AV_NOPTS_VALUE;
3017                 }
3018             }
3019         }
3020     }
3021
3022     if (pkt.dts != AV_NOPTS_VALUE)
3023         ifile->last_ts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3024
3025     if (debug_ts) {
3026         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",
3027                ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
3028                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
3029                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
3030                av_ts2str(input_files[ist->file_index]->ts_offset),
3031                av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
3032     }
3033
3034     sub2video_heartbeat(ist, pkt.pts);
3035
3036     ret = output_packet(ist, &pkt);
3037     if (ret < 0) {
3038         char buf[128];
3039         av_strerror(ret, buf, sizeof(buf));
3040         av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d: %s\n",
3041                 ist->file_index, ist->st->index, buf);
3042         if (exit_on_error)
3043             exit(1);
3044     }
3045
3046 discard_packet:
3047     av_free_packet(&pkt);
3048
3049     return 0;
3050 }
3051
3052 /**
3053  * Perform a step of transcoding for the specified filter graph.
3054  *
3055  * @param[in]  graph     filter graph to consider
3056  * @param[out] best_ist  input stream where a frame would allow to continue
3057  * @return  0 for success, <0 for error
3058  */
3059 static int transcode_from_filter(FilterGraph *graph, InputStream **best_ist)
3060 {
3061     int i, ret;
3062     int nb_requests, nb_requests_max = 0;
3063     InputFilter *ifilter;
3064     InputStream *ist;
3065
3066     *best_ist = NULL;
3067     ret = avfilter_graph_request_oldest(graph->graph);
3068     if (ret >= 0)
3069         return reap_filters();
3070
3071     if (ret == AVERROR_EOF) {
3072         ret = reap_filters();
3073         for (i = 0; i < graph->nb_outputs; i++)
3074             close_output_stream(graph->outputs[i]->ost);
3075         return ret;
3076     }
3077     if (ret != AVERROR(EAGAIN))
3078         return ret;
3079
3080     for (i = 0; i < graph->nb_inputs; i++) {
3081         ifilter = graph->inputs[i];
3082         ist = ifilter->ist;
3083         if (input_files[ist->file_index]->eagain ||
3084             input_files[ist->file_index]->eof_reached)
3085             continue;
3086         nb_requests = av_buffersrc_get_nb_failed_requests(ifilter->filter);
3087         if (nb_requests > nb_requests_max) {
3088             nb_requests_max = nb_requests;
3089             *best_ist = ist;
3090         }
3091     }
3092
3093     if (!*best_ist)
3094         for (i = 0; i < graph->nb_outputs; i++)
3095             graph->outputs[i]->ost->unavailable = 1;
3096
3097     return 0;
3098 }
3099
3100 /**
3101  * Run a single step of transcoding.
3102  *
3103  * @return  0 for success, <0 for error
3104  */
3105 static int transcode_step(void)
3106 {
3107     OutputStream *ost;
3108     InputStream  *ist;
3109     int ret;
3110
3111     ost = choose_output();
3112     if (!ost) {
3113         if (got_eagain()) {
3114             reset_eagain();
3115             av_usleep(10000);
3116             return 0;
3117         }
3118         av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from, finishing.\n");
3119         return AVERROR_EOF;
3120     }
3121
3122     if (ost->filter) {
3123         if ((ret = transcode_from_filter(ost->filter->graph, &ist)) < 0)
3124             return ret;
3125         if (!ist)
3126             return 0;
3127     } else {
3128         av_assert0(ost->source_index >= 0);
3129         ist = input_streams[ost->source_index];
3130     }
3131
3132     ret = process_input(ist->file_index);
3133     if (ret == AVERROR(EAGAIN)) {
3134         if (input_files[ist->file_index]->eagain)
3135             ost->unavailable = 1;
3136         return 0;
3137     }
3138     if (ret < 0)
3139         return ret == AVERROR_EOF ? 0 : ret;
3140
3141     return reap_filters();
3142 }
3143
3144 /*
3145  * The following code is the main loop of the file converter
3146  */
3147 static int transcode(void)
3148 {
3149     int ret, i;
3150     AVFormatContext *os;
3151     OutputStream *ost;
3152     InputStream *ist;
3153     int64_t timer_start;
3154
3155     ret = transcode_init();
3156     if (ret < 0)
3157         goto fail;
3158
3159     if (stdin_interaction) {
3160         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
3161     }
3162
3163     timer_start = av_gettime();
3164
3165 #if HAVE_PTHREADS
3166     if ((ret = init_input_threads()) < 0)
3167         goto fail;
3168 #endif
3169
3170     while (!received_sigterm) {
3171         int64_t cur_time= av_gettime();
3172
3173         /* if 'q' pressed, exits */
3174         if (stdin_interaction)
3175             if (check_keyboard_interaction(cur_time) < 0)
3176                 break;
3177
3178         /* check if there's any stream where output is still needed */
3179         if (!need_output()) {
3180             av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
3181             break;
3182         }
3183
3184         ret = transcode_step();
3185         if (ret < 0) {
3186             if (ret == AVERROR_EOF || ret == AVERROR(EAGAIN))
3187                 continue;
3188
3189             av_log(NULL, AV_LOG_ERROR, "Error while filtering.\n");
3190             break;
3191         }
3192
3193         /* dump report by using the output first video and audio streams */
3194         print_report(0, timer_start, cur_time);
3195     }
3196 #if HAVE_PTHREADS
3197     free_input_threads();
3198 #endif
3199
3200     /* at the end of stream, we must flush the decoder buffers */
3201     for (i = 0; i < nb_input_streams; i++) {
3202         ist = input_streams[i];
3203         if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
3204             output_packet(ist, NULL);
3205         }
3206     }
3207     flush_encoders();
3208
3209     term_exit();
3210
3211     /* write the trailer if needed and close file */
3212     for (i = 0; i < nb_output_files; i++) {
3213         os = output_files[i]->ctx;
3214         av_write_trailer(os);
3215     }
3216
3217     /* dump report by using the first video and audio streams */
3218     print_report(1, timer_start, av_gettime());
3219
3220     /* close each encoder */
3221     for (i = 0; i < nb_output_streams; i++) {
3222         ost = output_streams[i];
3223         if (ost->encoding_needed) {
3224             av_freep(&ost->st->codec->stats_in);
3225             avcodec_close(ost->st->codec);
3226         }
3227     }
3228
3229     /* close each decoder */
3230     for (i = 0; i < nb_input_streams; i++) {
3231         ist = input_streams[i];
3232         if (ist->decoding_needed) {
3233             avcodec_close(ist->st->codec);
3234         }
3235     }
3236
3237     /* finished ! */
3238     ret = 0;
3239
3240  fail:
3241 #if HAVE_PTHREADS
3242     free_input_threads();
3243 #endif
3244
3245     if (output_streams) {
3246         for (i = 0; i < nb_output_streams; i++) {
3247             ost = output_streams[i];
3248             if (ost) {
3249                 if (ost->stream_copy)
3250                     av_freep(&ost->st->codec->extradata);
3251                 if (ost->logfile) {
3252                     fclose(ost->logfile);
3253                     ost->logfile = NULL;
3254                 }
3255                 av_freep(&ost->st->codec->subtitle_header);
3256                 av_free(ost->forced_kf_pts);
3257                 av_dict_free(&ost->opts);
3258                 av_dict_free(&ost->swr_opts);
3259                 av_dict_free(&ost->resample_opts);
3260             }
3261         }
3262     }
3263     return ret;
3264 }
3265
3266
3267 static int64_t getutime(void)
3268 {
3269 #if HAVE_GETRUSAGE
3270     struct rusage rusage;
3271
3272     getrusage(RUSAGE_SELF, &rusage);
3273     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
3274 #elif HAVE_GETPROCESSTIMES
3275     HANDLE proc;
3276     FILETIME c, e, k, u;
3277     proc = GetCurrentProcess();
3278     GetProcessTimes(proc, &c, &e, &k, &u);
3279     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
3280 #else
3281     return av_gettime();
3282 #endif
3283 }
3284
3285 static int64_t getmaxrss(void)
3286 {
3287 #if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
3288     struct rusage rusage;
3289     getrusage(RUSAGE_SELF, &rusage);
3290     return (int64_t)rusage.ru_maxrss * 1024;
3291 #elif HAVE_GETPROCESSMEMORYINFO
3292     HANDLE proc;
3293     PROCESS_MEMORY_COUNTERS memcounters;
3294     proc = GetCurrentProcess();
3295     memcounters.cb = sizeof(memcounters);
3296     GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
3297     return memcounters.PeakPagefileUsage;
3298 #else
3299     return 0;
3300 #endif
3301 }
3302
3303 static void log_callback_null(void *ptr, int level, const char *fmt, va_list vl)
3304 {
3305 }
3306
3307 int main(int argc, char **argv)
3308 {
3309     int ret;
3310     int64_t ti;
3311
3312     atexit(exit_program);
3313
3314     setvbuf(stderr,NULL,_IONBF,0); /* win32 runtime needs this */
3315
3316     av_log_set_flags(AV_LOG_SKIP_REPEATED);
3317     parse_loglevel(argc, argv, options);
3318
3319     if(argc>1 && !strcmp(argv[1], "-d")){
3320         run_as_daemon=1;
3321         av_log_set_callback(log_callback_null);
3322         argc--;
3323         argv++;
3324     }
3325
3326     avcodec_register_all();
3327 #if CONFIG_AVDEVICE
3328     avdevice_register_all();
3329 #endif
3330     avfilter_register_all();
3331     av_register_all();
3332     avformat_network_init();
3333
3334     show_banner(argc, argv, options);
3335
3336     term_init();
3337
3338     /* parse options and open all input/output files */
3339     ret = ffmpeg_parse_options(argc, argv);
3340     if (ret < 0)
3341         exit(1);
3342
3343     if (nb_output_files <= 0 && nb_input_files == 0) {
3344         show_usage();
3345         av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
3346         exit(1);
3347     }
3348
3349     /* file converter / grab */
3350     if (nb_output_files <= 0) {
3351         av_log(NULL, AV_LOG_FATAL, "At least one output file must be specified\n");
3352         exit(1);
3353     }
3354
3355 //     if (nb_input_files == 0) {
3356 //         av_log(NULL, AV_LOG_FATAL, "At least one input file must be specified\n");
3357 //         exit(1);
3358 //     }
3359
3360     current_time = ti = getutime();
3361     if (transcode() < 0)
3362         exit(1);
3363     ti = getutime() - ti;
3364     if (do_benchmark) {
3365         printf("bench: utime=%0.3fs\n", ti / 1000000.0);
3366     }
3367     av_log(NULL, AV_LOG_DEBUG, "%"PRIu64" frames successfully decoded, %"PRIu64" decoding errors\n",
3368            decode_error_stat[0], decode_error_stat[1]);
3369     if (2*decode_error_stat[0] < decode_error_stat[1])
3370         exit(254);
3371
3372     exit(received_nb_signals ? 255 : 0);
3373     return 0;
3374 }