ffmpeg: use a rational for -aspect option.
[ffmpeg.git] / ffmpeg.c
1 /*
2  * Copyright (c) 2000-2003 Fabrice Bellard
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20
21 /**
22  * @file
23  * multimedia converter based on the FFmpeg libraries
24  */
25
26 #include "config.h"
27 #include <ctype.h>
28 #include <string.h>
29 #include <math.h>
30 #include <stdlib.h>
31 #include <errno.h>
32 #include <limits.h>
33 #if HAVE_ISATTY
34 #if HAVE_IO_H
35 #include <io.h>
36 #endif
37 #if HAVE_UNISTD_H
38 #include <unistd.h>
39 #endif
40 #endif
41 #include "libavformat/avformat.h"
42 #include "libavdevice/avdevice.h"
43 #include "libswscale/swscale.h"
44 #include "libswresample/swresample.h"
45 #include "libavutil/opt.h"
46 #include "libavutil/channel_layout.h"
47 #include "libavutil/parseutils.h"
48 #include "libavutil/samplefmt.h"
49 #include "libavutil/colorspace.h"
50 #include "libavutil/fifo.h"
51 #include "libavutil/intreadwrite.h"
52 #include "libavutil/dict.h"
53 #include "libavutil/mathematics.h"
54 #include "libavutil/pixdesc.h"
55 #include "libavutil/avstring.h"
56 #include "libavutil/libm.h"
57 #include "libavutil/imgutils.h"
58 #include "libavutil/timestamp.h"
59 #include "libavutil/bprint.h"
60 #include "libavutil/time.h"
61 #include "libavformat/os_support.h"
62
63 #include "libavformat/ffm.h" // not public API
64
65 # include "libavfilter/avcodec.h"
66 # include "libavfilter/avfilter.h"
67 # include "libavfilter/avfiltergraph.h"
68 # include "libavfilter/buffersrc.h"
69 # include "libavfilter/buffersink.h"
70
71 #if HAVE_SYS_RESOURCE_H
72 #include <sys/time.h>
73 #include <sys/types.h>
74 #include <sys/resource.h>
75 #elif HAVE_GETPROCESSTIMES
76 #include <windows.h>
77 #endif
78 #if HAVE_GETPROCESSMEMORYINFO
79 #include <windows.h>
80 #include <psapi.h>
81 #endif
82
83 #if HAVE_SYS_SELECT_H
84 #include <sys/select.h>
85 #endif
86
87 #if HAVE_TERMIOS_H
88 #include <fcntl.h>
89 #include <sys/ioctl.h>
90 #include <sys/time.h>
91 #include <termios.h>
92 #elif HAVE_KBHIT
93 #include <conio.h>
94 #endif
95
96 #if HAVE_PTHREADS
97 #include <pthread.h>
98 #endif
99
100 #include <time.h>
101
102 #include "ffmpeg.h"
103 #include "cmdutils.h"
104
105 #include "libavutil/avassert.h"
106
107 const char program_name[] = "ffmpeg";
108 const int program_birth_year = 2000;
109
110 static FILE *vstats_file;
111
112 const char *const forced_keyframes_const_names[] = {
113     "n",
114     "n_forced",
115     "prev_forced_n",
116     "prev_forced_t",
117     "t",
118     NULL
119 };
120
121 static void do_video_stats(OutputStream *ost, int frame_size);
122 static int64_t getutime(void);
123 static int64_t getmaxrss(void);
124
125 static int run_as_daemon  = 0;
126 static int64_t video_size = 0;
127 static int64_t audio_size = 0;
128 static int64_t subtitle_size = 0;
129 static int64_t extra_size = 0;
130 static int nb_frames_dup = 0;
131 static int nb_frames_drop = 0;
132
133 static int current_time;
134 AVIOContext *progress_avio = NULL;
135
136 static uint8_t *subtitle_out;
137
138 #if HAVE_PTHREADS
139 /* signal to input threads that they should exit; set by the main thread */
140 static int transcoding_finished;
141 #endif
142
143 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
144
145 InputStream **input_streams = NULL;
146 int        nb_input_streams = 0;
147 InputFile   **input_files   = NULL;
148 int        nb_input_files   = 0;
149
150 OutputStream **output_streams = NULL;
151 int         nb_output_streams = 0;
152 OutputFile   **output_files   = NULL;
153 int         nb_output_files   = 0;
154
155 FilterGraph **filtergraphs;
156 int        nb_filtergraphs;
157
158 #if HAVE_TERMIOS_H
159
160 /* init terminal so that we can grab keys */
161 static struct termios oldtty;
162 static int restore_tty;
163 #endif
164
165
166 /* sub2video hack:
167    Convert subtitles to video with alpha to insert them in filter graphs.
168    This is a temporary solution until libavfilter gets real subtitles support.
169  */
170
171 static int sub2video_get_blank_frame(InputStream *ist)
172 {
173     int ret;
174     AVFrame *frame = ist->sub2video.frame;
175
176     av_frame_unref(frame);
177     ist->sub2video.frame->width  = ist->sub2video.w;
178     ist->sub2video.frame->height = ist->sub2video.h;
179     ist->sub2video.frame->format = AV_PIX_FMT_RGB32;
180     if ((ret = av_frame_get_buffer(frame, 32)) < 0)
181         return ret;
182     memset(frame->data[0], 0, frame->height * frame->linesize[0]);
183     return 0;
184 }
185
186 static void sub2video_copy_rect(uint8_t *dst, int dst_linesize, int w, int h,
187                                 AVSubtitleRect *r)
188 {
189     uint32_t *pal, *dst2;
190     uint8_t *src, *src2;
191     int x, y;
192
193     if (r->type != SUBTITLE_BITMAP) {
194         av_log(NULL, AV_LOG_WARNING, "sub2video: non-bitmap subtitle\n");
195         return;
196     }
197     if (r->x < 0 || r->x + r->w > w || r->y < 0 || r->y + r->h > h) {
198         av_log(NULL, AV_LOG_WARNING, "sub2video: rectangle overflowing\n");
199         return;
200     }
201
202     dst += r->y * dst_linesize + r->x * 4;
203     src = r->pict.data[0];
204     pal = (uint32_t *)r->pict.data[1];
205     for (y = 0; y < r->h; y++) {
206         dst2 = (uint32_t *)dst;
207         src2 = src;
208         for (x = 0; x < r->w; x++)
209             *(dst2++) = pal[*(src2++)];
210         dst += dst_linesize;
211         src += r->pict.linesize[0];
212     }
213 }
214
215 static void sub2video_push_ref(InputStream *ist, int64_t pts)
216 {
217     AVFrame *frame = ist->sub2video.frame;
218     int i;
219
220     av_assert1(frame->data[0]);
221     ist->sub2video.last_pts = frame->pts = pts;
222     for (i = 0; i < ist->nb_filters; i++)
223         av_buffersrc_add_frame_flags(ist->filters[i]->filter, frame,
224                                      AV_BUFFERSRC_FLAG_KEEP_REF |
225                                      AV_BUFFERSRC_FLAG_PUSH);
226 }
227
228 static void sub2video_update(InputStream *ist, AVSubtitle *sub)
229 {
230     int w = ist->sub2video.w, h = ist->sub2video.h;
231     AVFrame *frame = ist->sub2video.frame;
232     int8_t *dst;
233     int     dst_linesize;
234     int num_rects, i;
235     int64_t pts, end_pts;
236
237     if (!frame)
238         return;
239     if (sub) {
240         pts       = av_rescale_q(sub->pts + sub->start_display_time * 1000,
241                                  AV_TIME_BASE_Q, ist->st->time_base);
242         end_pts   = av_rescale_q(sub->pts + sub->end_display_time   * 1000,
243                                  AV_TIME_BASE_Q, ist->st->time_base);
244         num_rects = sub->num_rects;
245     } else {
246         pts       = ist->sub2video.end_pts;
247         end_pts   = INT64_MAX;
248         num_rects = 0;
249     }
250     if (sub2video_get_blank_frame(ist) < 0) {
251         av_log(ist->st->codec, AV_LOG_ERROR,
252                "Impossible to get a blank canvas.\n");
253         return;
254     }
255     dst          = frame->data    [0];
256     dst_linesize = frame->linesize[0];
257     for (i = 0; i < num_rects; i++)
258         sub2video_copy_rect(dst, dst_linesize, w, h, sub->rects[i]);
259     sub2video_push_ref(ist, pts);
260     ist->sub2video.end_pts = end_pts;
261 }
262
263 static void sub2video_heartbeat(InputStream *ist, int64_t pts)
264 {
265     InputFile *infile = input_files[ist->file_index];
266     int i, j, nb_reqs;
267     int64_t pts2;
268
269     /* When a frame is read from a file, examine all sub2video streams in
270        the same file and send the sub2video frame again. Otherwise, decoded
271        video frames could be accumulating in the filter graph while a filter
272        (possibly overlay) is desperately waiting for a subtitle frame. */
273     for (i = 0; i < infile->nb_streams; i++) {
274         InputStream *ist2 = input_streams[infile->ist_index + i];
275         if (!ist2->sub2video.frame)
276             continue;
277         /* subtitles seem to be usually muxed ahead of other streams;
278            if not, substracting a larger time here is necessary */
279         pts2 = av_rescale_q(pts, ist->st->time_base, ist2->st->time_base) - 1;
280         /* do not send the heartbeat frame if the subtitle is already ahead */
281         if (pts2 <= ist2->sub2video.last_pts)
282             continue;
283         if (pts2 >= ist2->sub2video.end_pts || !ist2->sub2video.frame->data[0])
284             sub2video_update(ist2, NULL);
285         for (j = 0, nb_reqs = 0; j < ist2->nb_filters; j++)
286             nb_reqs += av_buffersrc_get_nb_failed_requests(ist2->filters[j]->filter);
287         if (nb_reqs)
288             sub2video_push_ref(ist2, pts2);
289     }
290 }
291
292 static void sub2video_flush(InputStream *ist)
293 {
294     int i;
295
296     for (i = 0; i < ist->nb_filters; i++)
297         av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
298 }
299
300 /* end of sub2video hack */
301
302 void term_exit(void)
303 {
304     av_log(NULL, AV_LOG_QUIET, "%s", "");
305 #if HAVE_TERMIOS_H
306     if(restore_tty)
307         tcsetattr (0, TCSANOW, &oldtty);
308 #endif
309 }
310
311 static volatile int received_sigterm = 0;
312 static volatile int received_nb_signals = 0;
313
314 static void
315 sigterm_handler(int sig)
316 {
317     received_sigterm = sig;
318     received_nb_signals++;
319     term_exit();
320     if(received_nb_signals > 3)
321         exit(123);
322 }
323
324 void term_init(void)
325 {
326 #if HAVE_TERMIOS_H
327     if(!run_as_daemon){
328         struct termios tty;
329         int istty = 1;
330 #if HAVE_ISATTY
331         istty = isatty(0) && isatty(2);
332 #endif
333         if (istty && tcgetattr (0, &tty) == 0) {
334             oldtty = tty;
335             restore_tty = 1;
336             atexit(term_exit);
337
338             tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
339                              |INLCR|IGNCR|ICRNL|IXON);
340             tty.c_oflag |= OPOST;
341             tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
342             tty.c_cflag &= ~(CSIZE|PARENB);
343             tty.c_cflag |= CS8;
344             tty.c_cc[VMIN] = 1;
345             tty.c_cc[VTIME] = 0;
346
347             tcsetattr (0, TCSANOW, &tty);
348         }
349         signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
350     }
351 #endif
352     avformat_network_deinit();
353
354     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
355     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
356 #ifdef SIGXCPU
357     signal(SIGXCPU, sigterm_handler);
358 #endif
359 }
360
361 /* read a key without blocking */
362 static int read_key(void)
363 {
364     unsigned char ch;
365 #if HAVE_TERMIOS_H
366     int n = 1;
367     struct timeval tv;
368     fd_set rfds;
369
370     FD_ZERO(&rfds);
371     FD_SET(0, &rfds);
372     tv.tv_sec = 0;
373     tv.tv_usec = 0;
374     n = select(1, &rfds, NULL, NULL, &tv);
375     if (n > 0) {
376         n = read(0, &ch, 1);
377         if (n == 1)
378             return ch;
379
380         return n;
381     }
382 #elif HAVE_KBHIT
383 #    if HAVE_PEEKNAMEDPIPE
384     static int is_pipe;
385     static HANDLE input_handle;
386     DWORD dw, nchars;
387     if(!input_handle){
388         input_handle = GetStdHandle(STD_INPUT_HANDLE);
389         is_pipe = !GetConsoleMode(input_handle, &dw);
390     }
391
392     if (stdin->_cnt > 0) {
393         read(0, &ch, 1);
394         return ch;
395     }
396     if (is_pipe) {
397         /* When running under a GUI, you will end here. */
398         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL)) {
399             // input pipe may have been closed by the program that ran ffmpeg
400             return -1;
401         }
402         //Read it
403         if(nchars != 0) {
404             read(0, &ch, 1);
405             return ch;
406         }else{
407             return -1;
408         }
409     }
410 #    endif
411     if(kbhit())
412         return(getch());
413 #endif
414     return -1;
415 }
416
417 static int decode_interrupt_cb(void *ctx)
418 {
419     return received_nb_signals > 1;
420 }
421
422 const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
423
424 static void exit_program(void)
425 {
426     int i, j;
427
428     if (do_benchmark) {
429         int maxrss = getmaxrss() / 1024;
430         printf("bench: maxrss=%ikB\n", maxrss);
431     }
432
433     for (i = 0; i < nb_filtergraphs; i++) {
434         avfilter_graph_free(&filtergraphs[i]->graph);
435         for (j = 0; j < filtergraphs[i]->nb_inputs; j++) {
436             av_freep(&filtergraphs[i]->inputs[j]->name);
437             av_freep(&filtergraphs[i]->inputs[j]);
438         }
439         av_freep(&filtergraphs[i]->inputs);
440         for (j = 0; j < filtergraphs[i]->nb_outputs; j++) {
441             av_freep(&filtergraphs[i]->outputs[j]->name);
442             av_freep(&filtergraphs[i]->outputs[j]);
443         }
444         av_freep(&filtergraphs[i]->outputs);
445         av_freep(&filtergraphs[i]->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     avfilter_uninit();
503     avformat_network_deinit();
504
505     if (received_sigterm) {
506         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
507                (int) received_sigterm);
508     }
509 }
510
511 void assert_avoptions(AVDictionary *m)
512 {
513     AVDictionaryEntry *t;
514     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
515         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
516         exit(1);
517     }
518 }
519
520 static void abort_codec_experimental(AVCodec *c, int encoder)
521 {
522     exit(1);
523 }
524
525 static void update_benchmark(const char *fmt, ...)
526 {
527     if (do_benchmark_all) {
528         int64_t t = getutime();
529         va_list va;
530         char buf[1024];
531
532         if (fmt) {
533             va_start(va, fmt);
534             vsnprintf(buf, sizeof(buf), fmt, va);
535             va_end(va);
536             printf("bench: %8"PRIu64" %s \n", t - current_time, buf);
537         }
538         current_time = t;
539     }
540 }
541
542 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
543 {
544     AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
545     AVCodecContext          *avctx = ost->st->codec;
546     int ret;
547
548     if ((avctx->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
549         (avctx->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
550         pkt->pts = pkt->dts = AV_NOPTS_VALUE;
551
552     if ((avctx->codec_type == AVMEDIA_TYPE_AUDIO || avctx->codec_type == AVMEDIA_TYPE_VIDEO) && pkt->dts != AV_NOPTS_VALUE) {
553         int64_t max = ost->st->cur_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
554         if (ost->st->cur_dts && ost->st->cur_dts != AV_NOPTS_VALUE &&  max > pkt->dts) {
555             av_log(s, max - pkt->dts > 2 || avctx->codec_type == AVMEDIA_TYPE_VIDEO ? AV_LOG_WARNING : AV_LOG_DEBUG,
556                    "st:%d PTS: %"PRId64" DTS: %"PRId64" < %"PRId64" invalid, clipping\n", pkt->stream_index, pkt->pts, pkt->dts, max);
557             if(pkt->pts >= pkt->dts)
558                 pkt->pts = FFMAX(pkt->pts, max);
559             pkt->dts = max;
560         }
561     }
562
563     /*
564      * Audio encoders may split the packets --  #frames in != #packets out.
565      * But there is no reordering, so we can limit the number of output packets
566      * by simply dropping them here.
567      * Counting encoded video frames needs to be done separately because of
568      * reordering, see do_video_out()
569      */
570     if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
571         if (ost->frame_number >= ost->max_frames) {
572             av_free_packet(pkt);
573             return;
574         }
575         ost->frame_number++;
576     }
577
578     while (bsfc) {
579         AVPacket new_pkt = *pkt;
580         int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
581                                            &new_pkt.data, &new_pkt.size,
582                                            pkt->data, pkt->size,
583                                            pkt->flags & AV_PKT_FLAG_KEY);
584         if(a == 0 && new_pkt.data != pkt->data && new_pkt.destruct) {
585             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
586             if(t) {
587                 memcpy(t, new_pkt.data, new_pkt.size);
588                 memset(t + new_pkt.size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
589                 new_pkt.data = t;
590                 new_pkt.buf = NULL;
591                 a = 1;
592             } else
593                 a = AVERROR(ENOMEM);
594         }
595         if (a > 0) {
596             av_free_packet(pkt);
597             new_pkt.buf = av_buffer_create(new_pkt.data, new_pkt.size,
598                                            av_buffer_default_free, NULL, 0);
599             if (!new_pkt.buf)
600                 exit(1);
601         } else if (a < 0) {
602             av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
603                    bsfc->filter->name, pkt->stream_index,
604                    avctx->codec ? avctx->codec->name : "copy");
605             print_error("", a);
606             if (exit_on_error)
607                 exit(1);
608         }
609         *pkt = new_pkt;
610
611         bsfc = bsfc->next;
612     }
613
614     pkt->stream_index = ost->index;
615
616     if (debug_ts) {
617         av_log(NULL, AV_LOG_INFO, "muxer <- type:%s "
618                 "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s size:%d\n",
619                 av_get_media_type_string(ost->st->codec->codec_type),
620                 av_ts2str(pkt->pts), av_ts2timestr(pkt->pts, &ost->st->time_base),
621                 av_ts2str(pkt->dts), av_ts2timestr(pkt->dts, &ost->st->time_base),
622                 pkt->size
623               );
624     }
625
626     ret = av_interleaved_write_frame(s, pkt);
627     if (ret < 0) {
628         print_error("av_interleaved_write_frame()", ret);
629         exit(1);
630     }
631 }
632
633 static void close_output_stream(OutputStream *ost)
634 {
635     OutputFile *of = output_files[ost->file_index];
636
637     ost->finished = 1;
638     if (of->shortest) {
639         int64_t end = av_rescale_q(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, AV_TIME_BASE_Q);
640         of->recording_time = FFMIN(of->recording_time, end);
641     }
642 }
643
644 static int check_recording_time(OutputStream *ost)
645 {
646     OutputFile *of = output_files[ost->file_index];
647
648     if (of->recording_time != INT64_MAX &&
649         av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
650                       AV_TIME_BASE_Q) >= 0) {
651         close_output_stream(ost);
652         return 0;
653     }
654     return 1;
655 }
656
657 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
658                          AVFrame *frame)
659 {
660     AVCodecContext *enc = ost->st->codec;
661     AVPacket pkt;
662     int got_packet = 0;
663
664     av_init_packet(&pkt);
665     pkt.data = NULL;
666     pkt.size = 0;
667
668     if (!check_recording_time(ost))
669         return;
670
671     if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
672         frame->pts = ost->sync_opts;
673     ost->sync_opts = frame->pts + frame->nb_samples;
674
675     av_assert0(pkt.size || !pkt.data);
676     update_benchmark(NULL);
677     if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
678         av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
679         exit(1);
680     }
681     update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
682
683     if (got_packet) {
684         if (pkt.pts != AV_NOPTS_VALUE)
685             pkt.pts      = av_rescale_q(pkt.pts,      enc->time_base, ost->st->time_base);
686         if (pkt.dts != AV_NOPTS_VALUE)
687             pkt.dts      = av_rescale_q(pkt.dts,      enc->time_base, ost->st->time_base);
688         if (pkt.duration > 0)
689             pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
690
691         if (debug_ts) {
692             av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
693                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
694                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
695                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
696         }
697
698         audio_size += pkt.size;
699         write_frame(s, &pkt, ost);
700
701         av_free_packet(&pkt);
702     }
703 }
704
705 static void do_subtitle_out(AVFormatContext *s,
706                             OutputStream *ost,
707                             InputStream *ist,
708                             AVSubtitle *sub)
709 {
710     int subtitle_out_max_size = 1024 * 1024;
711     int subtitle_out_size, nb, i;
712     AVCodecContext *enc;
713     AVPacket pkt;
714     int64_t pts;
715
716     if (sub->pts == AV_NOPTS_VALUE) {
717         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
718         if (exit_on_error)
719             exit(1);
720         return;
721     }
722
723     enc = ost->st->codec;
724
725     if (!subtitle_out) {
726         subtitle_out = av_malloc(subtitle_out_max_size);
727     }
728
729     /* Note: DVB subtitle need one packet to draw them and one other
730        packet to clear them */
731     /* XXX: signal it in the codec context ? */
732     if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE)
733         nb = 2;
734     else
735         nb = 1;
736
737     /* shift timestamp to honor -ss and make check_recording_time() work with -t */
738     pts = sub->pts - output_files[ost->file_index]->start_time;
739     for (i = 0; i < nb; i++) {
740         ost->sync_opts = av_rescale_q(pts, AV_TIME_BASE_Q, enc->time_base);
741         if (!check_recording_time(ost))
742             return;
743
744         sub->pts = pts;
745         // start_display_time is required to be 0
746         sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
747         sub->end_display_time  -= sub->start_display_time;
748         sub->start_display_time = 0;
749         if (i == 1)
750             sub->num_rects = 0;
751         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
752                                                     subtitle_out_max_size, sub);
753         if (subtitle_out_size < 0) {
754             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
755             exit(1);
756         }
757
758         av_init_packet(&pkt);
759         pkt.data = subtitle_out;
760         pkt.size = subtitle_out_size;
761         pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
762         pkt.duration = av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->st->time_base);
763         if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
764             /* XXX: the pts correction is handled here. Maybe handling
765                it in the codec would be better */
766             if (i == 0)
767                 pkt.pts += 90 * sub->start_display_time;
768             else
769                 pkt.pts += 90 * sub->end_display_time;
770         }
771         subtitle_size += pkt.size;
772         write_frame(s, &pkt, ost);
773     }
774 }
775
776 static void do_video_out(AVFormatContext *s,
777                          OutputStream *ost,
778                          AVFrame *in_picture)
779 {
780     int ret, format_video_sync;
781     AVPacket pkt;
782     AVCodecContext *enc = ost->st->codec;
783     int nb_frames, i;
784     double sync_ipts, delta;
785     double duration = 0;
786     int frame_size = 0;
787     InputStream *ist = NULL;
788
789     if (ost->source_index >= 0)
790         ist = input_streams[ost->source_index];
791
792     if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
793         duration = 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base));
794
795     sync_ipts = in_picture->pts;
796     delta = sync_ipts - ost->sync_opts + duration;
797
798     /* by default, we output a single frame */
799     nb_frames = 1;
800
801     format_video_sync = video_sync_method;
802     if (format_video_sync == VSYNC_AUTO)
803         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : VSYNC_CFR;
804
805     switch (format_video_sync) {
806     case VSYNC_CFR:
807         // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
808         if (delta < -1.1)
809             nb_frames = 0;
810         else if (delta > 1.1)
811             nb_frames = lrintf(delta);
812         break;
813     case VSYNC_VFR:
814         if (delta <= -0.6)
815             nb_frames = 0;
816         else if (delta > 0.6)
817             ost->sync_opts = lrint(sync_ipts);
818         break;
819     case VSYNC_DROP:
820     case VSYNC_PASSTHROUGH:
821         ost->sync_opts = lrint(sync_ipts);
822         break;
823     default:
824         av_assert0(0);
825     }
826
827     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
828     if (nb_frames == 0) {
829         nb_frames_drop++;
830         av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
831         return;
832     } else if (nb_frames > 1) {
833         if (nb_frames > dts_error_threshold * 30) {
834             av_log(NULL, AV_LOG_ERROR, "%d frame duplication too large, skipping\n", nb_frames - 1);
835             nb_frames_drop++;
836             return;
837         }
838         nb_frames_dup += nb_frames - 1;
839         av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
840     }
841
842   /* duplicates frame if needed */
843   for (i = 0; i < nb_frames; i++) {
844     av_init_packet(&pkt);
845     pkt.data = NULL;
846     pkt.size = 0;
847
848     in_picture->pts = ost->sync_opts;
849
850     if (!check_recording_time(ost))
851         return;
852
853     if (s->oformat->flags & AVFMT_RAWPICTURE &&
854         enc->codec->id == AV_CODEC_ID_RAWVIDEO) {
855         /* raw pictures are written as AVPicture structure to
856            avoid any copies. We support temporarily the older
857            method. */
858         enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
859         enc->coded_frame->top_field_first  = in_picture->top_field_first;
860         if (enc->coded_frame->interlaced_frame)
861             enc->field_order = enc->coded_frame->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
862         else
863             enc->field_order = AV_FIELD_PROGRESSIVE;
864         pkt.data   = (uint8_t *)in_picture;
865         pkt.size   =  sizeof(AVPicture);
866         pkt.pts    = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
867         pkt.flags |= AV_PKT_FLAG_KEY;
868
869         video_size += pkt.size;
870         write_frame(s, &pkt, ost);
871     } else {
872         int got_packet, forced_keyframe = 0;
873         double pts_time;
874
875         if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME) &&
876             ost->top_field_first >= 0)
877             in_picture->top_field_first = !!ost->top_field_first;
878
879         if (in_picture->interlaced_frame) {
880             if (enc->codec->id == AV_CODEC_ID_MJPEG)
881                 enc->field_order = in_picture->top_field_first ? AV_FIELD_TT:AV_FIELD_BB;
882             else
883                 enc->field_order = in_picture->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
884         } else
885             enc->field_order = AV_FIELD_PROGRESSIVE;
886
887         in_picture->quality = ost->st->codec->global_quality;
888         if (!enc->me_threshold)
889             in_picture->pict_type = 0;
890
891         pts_time = in_picture->pts != AV_NOPTS_VALUE ?
892             in_picture->pts * av_q2d(enc->time_base) : NAN;
893         if (ost->forced_kf_index < ost->forced_kf_count &&
894             in_picture->pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
895             ost->forced_kf_index++;
896             forced_keyframe = 1;
897         } else if (ost->forced_keyframes_pexpr) {
898             double res;
899             ost->forced_keyframes_expr_const_values[FKF_T] = pts_time;
900             res = av_expr_eval(ost->forced_keyframes_pexpr,
901                                ost->forced_keyframes_expr_const_values, NULL);
902             av_dlog(NULL, "force_key_frame: n:%f n_forced:%f prev_forced_n:%f t:%f prev_forced_t:%f -> res:%f\n",
903                     ost->forced_keyframes_expr_const_values[FKF_N],
904                     ost->forced_keyframes_expr_const_values[FKF_N_FORCED],
905                     ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N],
906                     ost->forced_keyframes_expr_const_values[FKF_T],
907                     ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T],
908                     res);
909             if (res) {
910                 forced_keyframe = 1;
911                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] =
912                     ost->forced_keyframes_expr_const_values[FKF_N];
913                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] =
914                     ost->forced_keyframes_expr_const_values[FKF_T];
915                 ost->forced_keyframes_expr_const_values[FKF_N_FORCED] += 1;
916             }
917
918             ost->forced_keyframes_expr_const_values[FKF_N] += 1;
919         }
920         if (forced_keyframe) {
921             in_picture->pict_type = AV_PICTURE_TYPE_I;
922             av_log(NULL, AV_LOG_DEBUG, "Forced keyframe at time %f\n", pts_time);
923         }
924
925         update_benchmark(NULL);
926         ret = avcodec_encode_video2(enc, &pkt, in_picture, &got_packet);
927         update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
928         if (ret < 0) {
929             av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
930             exit(1);
931         }
932
933         if (got_packet) {
934             if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
935                 pkt.pts = ost->sync_opts;
936
937             if (pkt.pts != AV_NOPTS_VALUE)
938                 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
939             if (pkt.dts != AV_NOPTS_VALUE)
940                 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
941
942             if (debug_ts) {
943                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
944                     "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
945                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
946                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
947             }
948
949             frame_size = pkt.size;
950             video_size += pkt.size;
951             write_frame(s, &pkt, ost);
952             av_free_packet(&pkt);
953
954             /* if two pass, output log */
955             if (ost->logfile && enc->stats_out) {
956                 fprintf(ost->logfile, "%s", enc->stats_out);
957             }
958         }
959     }
960     ost->sync_opts++;
961     /*
962      * For video, number of frames in == number of packets out.
963      * But there may be reordering, so we can't throw away frames on encoder
964      * flush, we need to limit them here, before they go into encoder.
965      */
966     ost->frame_number++;
967
968     if (vstats_filename && frame_size)
969         do_video_stats(ost, frame_size);
970   }
971 }
972
973 static double psnr(double d)
974 {
975     return -10.0 * log(d) / log(10.0);
976 }
977
978 static void do_video_stats(OutputStream *ost, int frame_size)
979 {
980     AVCodecContext *enc;
981     int frame_number;
982     double ti1, bitrate, avg_bitrate;
983
984     /* this is executed just the first time do_video_stats is called */
985     if (!vstats_file) {
986         vstats_file = fopen(vstats_filename, "w");
987         if (!vstats_file) {
988             perror("fopen");
989             exit(1);
990         }
991     }
992
993     enc = ost->st->codec;
994     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
995         frame_number = ost->st->nb_frames;
996         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
997         if (enc->flags&CODEC_FLAG_PSNR)
998             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
999
1000         fprintf(vstats_file,"f_size= %6d ", frame_size);
1001         /* compute pts value */
1002         ti1 = ost->st->pts.val * av_q2d(enc->time_base);
1003         if (ti1 < 0.01)
1004             ti1 = 0.01;
1005
1006         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1007         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1008         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1009                (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1010         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1011     }
1012 }
1013
1014 /**
1015  * Get and encode new output from any of the filtergraphs, without causing
1016  * activity.
1017  *
1018  * @return  0 for success, <0 for severe errors
1019  */
1020 static int reap_filters(void)
1021 {
1022     AVFrame *filtered_frame = NULL;
1023     int i;
1024     int64_t frame_pts;
1025
1026     /* Reap all buffers present in the buffer sinks */
1027     for (i = 0; i < nb_output_streams; i++) {
1028         OutputStream *ost = output_streams[i];
1029         OutputFile    *of = output_files[ost->file_index];
1030         int ret = 0;
1031
1032         if (!ost->filter)
1033             continue;
1034
1035         if (!ost->filtered_frame && !(ost->filtered_frame = avcodec_alloc_frame())) {
1036             return AVERROR(ENOMEM);
1037         } else
1038             avcodec_get_frame_defaults(ost->filtered_frame);
1039         filtered_frame = ost->filtered_frame;
1040
1041         while (1) {
1042             ret = av_buffersink_get_frame_flags(ost->filter->filter, filtered_frame,
1043                                                AV_BUFFERSINK_FLAG_NO_REQUEST);
1044             if (ret < 0) {
1045                 if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
1046                     char buf[256];
1047                     av_strerror(ret, buf, sizeof(buf));
1048                     av_log(NULL, AV_LOG_WARNING,
1049                            "Error in av_buffersink_get_buffer_ref(): %s\n", buf);
1050                 }
1051                 break;
1052             }
1053             frame_pts = AV_NOPTS_VALUE;
1054             if (filtered_frame->pts != AV_NOPTS_VALUE) {
1055                 filtered_frame->pts = frame_pts = av_rescale_q(filtered_frame->pts,
1056                                                 ost->filter->filter->inputs[0]->time_base,
1057                                                 ost->st->codec->time_base) -
1058                                     av_rescale_q(of->start_time,
1059                                                 AV_TIME_BASE_Q,
1060                                                 ost->st->codec->time_base);
1061
1062                 if (of->start_time && filtered_frame->pts < 0) {
1063                     av_frame_unref(filtered_frame);
1064                     continue;
1065                 }
1066             }
1067             //if (ost->source_index >= 0)
1068             //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
1069
1070
1071             switch (ost->filter->filter->inputs[0]->type) {
1072             case AVMEDIA_TYPE_VIDEO:
1073                 filtered_frame->pts = frame_pts;
1074                 if (!ost->frame_aspect_ratio.num)
1075                     ost->st->codec->sample_aspect_ratio = filtered_frame->sample_aspect_ratio;
1076
1077                 do_video_out(of->ctx, ost, filtered_frame);
1078                 break;
1079             case AVMEDIA_TYPE_AUDIO:
1080                 filtered_frame->pts = frame_pts;
1081                 if (!(ost->st->codec->codec->capabilities & CODEC_CAP_PARAM_CHANGE) &&
1082                     ost->st->codec->channels != av_frame_get_channels(filtered_frame)) {
1083                     av_log(NULL, AV_LOG_ERROR,
1084                            "Audio filter graph output is not normalized and encoder does not support parameter changes\n");
1085                     break;
1086                 }
1087                 do_audio_out(of->ctx, ost, filtered_frame);
1088                 break;
1089             default:
1090                 // TODO support subtitle filters
1091                 av_assert0(0);
1092             }
1093
1094             av_frame_unref(filtered_frame);
1095         }
1096     }
1097
1098     return 0;
1099 }
1100
1101 static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
1102 {
1103     char buf[1024];
1104     AVBPrint buf_script;
1105     OutputStream *ost;
1106     AVFormatContext *oc;
1107     int64_t total_size;
1108     AVCodecContext *enc;
1109     int frame_number, vid, i;
1110     double bitrate;
1111     int64_t pts = INT64_MIN;
1112     static int64_t last_time = -1;
1113     static int qp_histogram[52];
1114     int hours, mins, secs, us;
1115
1116     if (!print_stats && !is_last_report && !progress_avio)
1117         return;
1118
1119     if (!is_last_report) {
1120         if (last_time == -1) {
1121             last_time = cur_time;
1122             return;
1123         }
1124         if ((cur_time - last_time) < 500000)
1125             return;
1126         last_time = cur_time;
1127     }
1128
1129
1130     oc = output_files[0]->ctx;
1131
1132     total_size = avio_size(oc->pb);
1133     if (total_size <= 0) // FIXME improve avio_size() so it works with non seekable output too
1134         total_size = avio_tell(oc->pb);
1135
1136     buf[0] = '\0';
1137     vid = 0;
1138     av_bprint_init(&buf_script, 0, 1);
1139     for (i = 0; i < nb_output_streams; i++) {
1140         float q = -1;
1141         ost = output_streams[i];
1142         enc = ost->st->codec;
1143         if (!ost->stream_copy && enc->coded_frame)
1144             q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
1145         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1146             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1147             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1148                        ost->file_index, ost->index, q);
1149         }
1150         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1151             float fps, t = (cur_time-timer_start) / 1000000.0;
1152
1153             frame_number = ost->frame_number;
1154             fps = t > 1 ? frame_number / t : 0;
1155             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
1156                      frame_number, fps < 9.95, fps, q);
1157             av_bprintf(&buf_script, "frame=%d\n", frame_number);
1158             av_bprintf(&buf_script, "fps=%.1f\n", fps);
1159             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1160                        ost->file_index, ost->index, q);
1161             if (is_last_report)
1162                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1163             if (qp_hist) {
1164                 int j;
1165                 int qp = lrintf(q);
1166                 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
1167                     qp_histogram[qp]++;
1168                 for (j = 0; j < 32; j++)
1169                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log2(qp_histogram[j] + 1)));
1170             }
1171             if ((enc->flags&CODEC_FLAG_PSNR) && (enc->coded_frame || is_last_report)) {
1172                 int j;
1173                 double error, error_sum = 0;
1174                 double scale, scale_sum = 0;
1175                 double p;
1176                 char type[3] = { 'Y','U','V' };
1177                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1178                 for (j = 0; j < 3; j++) {
1179                     if (is_last_report) {
1180                         error = enc->error[j];
1181                         scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
1182                     } else {
1183                         error = enc->coded_frame->error[j];
1184                         scale = enc->width * enc->height * 255.0 * 255.0;
1185                     }
1186                     if (j)
1187                         scale /= 4;
1188                     error_sum += error;
1189                     scale_sum += scale;
1190                     p = psnr(error / scale);
1191                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], p);
1192                     av_bprintf(&buf_script, "stream_%d_%d_psnr_%c=%2.2f\n",
1193                                ost->file_index, ost->index, type[j] | 32, p);
1194                 }
1195                 p = psnr(error_sum / scale_sum);
1196                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
1197                 av_bprintf(&buf_script, "stream_%d_%d_psnr_all=%2.2f\n",
1198                            ost->file_index, ost->index, p);
1199             }
1200             vid = 1;
1201         }
1202         /* compute min output value */
1203         if ((is_last_report || !ost->finished) && ost->st->pts.val != AV_NOPTS_VALUE)
1204             pts = FFMAX(pts, av_rescale_q(ost->st->pts.val,
1205                                           ost->st->time_base, AV_TIME_BASE_Q));
1206     }
1207
1208     secs = pts / AV_TIME_BASE;
1209     us = pts % AV_TIME_BASE;
1210     mins = secs / 60;
1211     secs %= 60;
1212     hours = mins / 60;
1213     mins %= 60;
1214
1215     bitrate = pts && total_size >= 0 ? total_size * 8 / (pts / 1000.0) : -1;
1216
1217     if (total_size < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1218                                  "size=N/A time=");
1219     else                snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1220                                  "size=%8.0fkB time=", total_size / 1024.0);
1221     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1222              "%02d:%02d:%02d.%02d ", hours, mins, secs,
1223              (100 * us) / AV_TIME_BASE);
1224     if (bitrate < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1225                               "bitrate=N/A");
1226     else             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1227                               "bitrate=%6.1fkbits/s", bitrate);
1228     if (total_size < 0) av_bprintf(&buf_script, "total_size=N/A\n");
1229     else                av_bprintf(&buf_script, "total_size=%"PRId64"\n", total_size);
1230     av_bprintf(&buf_script, "out_time_ms=%"PRId64"\n", pts);
1231     av_bprintf(&buf_script, "out_time=%02d:%02d:%02d.%06d\n",
1232                hours, mins, secs, us);
1233
1234     if (nb_frames_dup || nb_frames_drop)
1235         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1236                 nb_frames_dup, nb_frames_drop);
1237     av_bprintf(&buf_script, "dup_frames=%d\n", nb_frames_dup);
1238     av_bprintf(&buf_script, "drop_frames=%d\n", nb_frames_drop);
1239
1240     if (print_stats || is_last_report) {
1241         if (print_stats==1 && AV_LOG_INFO > av_log_get_level()) {
1242             fprintf(stderr, "%s    \r", buf);
1243         } else
1244             av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
1245
1246     fflush(stderr);
1247     }
1248
1249     if (progress_avio) {
1250         av_bprintf(&buf_script, "progress=%s\n",
1251                    is_last_report ? "end" : "continue");
1252         avio_write(progress_avio, buf_script.str,
1253                    FFMIN(buf_script.len, buf_script.size - 1));
1254         avio_flush(progress_avio);
1255         av_bprint_finalize(&buf_script, NULL);
1256         if (is_last_report) {
1257             avio_close(progress_avio);
1258             progress_avio = NULL;
1259         }
1260     }
1261
1262     if (is_last_report) {
1263         int64_t raw= audio_size + video_size + subtitle_size + extra_size;
1264         av_log(NULL, AV_LOG_INFO, "\n");
1265         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB subtitle:%1.0f global headers:%1.0fkB muxing overhead %f%%\n",
1266                video_size / 1024.0,
1267                audio_size / 1024.0,
1268                subtitle_size / 1024.0,
1269                extra_size / 1024.0,
1270                100.0 * (total_size - raw) / raw
1271         );
1272         if(video_size + audio_size + subtitle_size + extra_size == 0){
1273             av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
1274         }
1275     }
1276 }
1277
1278 static void flush_encoders(void)
1279 {
1280     int i, ret;
1281
1282     for (i = 0; i < nb_output_streams; i++) {
1283         OutputStream   *ost = output_streams[i];
1284         AVCodecContext *enc = ost->st->codec;
1285         AVFormatContext *os = output_files[ost->file_index]->ctx;
1286         int stop_encoding = 0;
1287
1288         if (!ost->encoding_needed)
1289             continue;
1290
1291         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
1292             continue;
1293         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == AV_CODEC_ID_RAWVIDEO)
1294             continue;
1295
1296         for (;;) {
1297             int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
1298             const char *desc;
1299             int64_t *size;
1300
1301             switch (ost->st->codec->codec_type) {
1302             case AVMEDIA_TYPE_AUDIO:
1303                 encode = avcodec_encode_audio2;
1304                 desc   = "Audio";
1305                 size   = &audio_size;
1306                 break;
1307             case AVMEDIA_TYPE_VIDEO:
1308                 encode = avcodec_encode_video2;
1309                 desc   = "Video";
1310                 size   = &video_size;
1311                 break;
1312             default:
1313                 stop_encoding = 1;
1314             }
1315
1316             if (encode) {
1317                 AVPacket pkt;
1318                 int got_packet;
1319                 av_init_packet(&pkt);
1320                 pkt.data = NULL;
1321                 pkt.size = 0;
1322
1323                 update_benchmark(NULL);
1324                 ret = encode(enc, &pkt, NULL, &got_packet);
1325                 update_benchmark("flush %s %d.%d", desc, ost->file_index, ost->index);
1326                 if (ret < 0) {
1327                     av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
1328                     exit(1);
1329                 }
1330                 *size += pkt.size;
1331                 if (ost->logfile && enc->stats_out) {
1332                     fprintf(ost->logfile, "%s", enc->stats_out);
1333                 }
1334                 if (!got_packet) {
1335                     stop_encoding = 1;
1336                     break;
1337                 }
1338                 if (pkt.pts != AV_NOPTS_VALUE)
1339                     pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
1340                 if (pkt.dts != AV_NOPTS_VALUE)
1341                     pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
1342                 if (pkt.duration > 0)
1343                     pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
1344                 write_frame(os, &pkt, ost);
1345                 if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && vstats_filename) {
1346                     do_video_stats(ost, pkt.size);
1347                 }
1348             }
1349
1350             if (stop_encoding)
1351                 break;
1352         }
1353     }
1354 }
1355
1356 /*
1357  * Check whether a packet from ist should be written into ost at this time
1358  */
1359 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1360 {
1361     OutputFile *of = output_files[ost->file_index];
1362     int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
1363
1364     if (ost->source_index != ist_index)
1365         return 0;
1366
1367     if (of->start_time && ist->pts < of->start_time)
1368         return 0;
1369
1370     return 1;
1371 }
1372
1373 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1374 {
1375     OutputFile *of = output_files[ost->file_index];
1376     int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1377     AVPicture pict;
1378     AVPacket opkt;
1379
1380     av_init_packet(&opkt);
1381
1382     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1383         !ost->copy_initial_nonkeyframes)
1384         return;
1385
1386     if (!ost->frame_number && ist->pts < of->start_time &&
1387         !ost->copy_prior_start)
1388         return;
1389
1390     if (of->recording_time != INT64_MAX &&
1391         ist->pts >= of->recording_time + of->start_time) {
1392         close_output_stream(ost);
1393         return;
1394     }
1395
1396     /* force the input stream PTS */
1397     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1398         audio_size += pkt->size;
1399     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1400         video_size += pkt->size;
1401         ost->sync_opts++;
1402     } else if (ost->st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
1403         subtitle_size += pkt->size;
1404     }
1405
1406     if (pkt->pts != AV_NOPTS_VALUE)
1407         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1408     else
1409         opkt.pts = AV_NOPTS_VALUE;
1410
1411     if (pkt->dts == AV_NOPTS_VALUE)
1412         opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
1413     else
1414         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1415     opkt.dts -= ost_tb_start_time;
1416
1417     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && pkt->dts != AV_NOPTS_VALUE) {
1418         int duration = av_get_audio_frame_duration(ist->st->codec, pkt->size);
1419         if(!duration)
1420             duration = ist->st->codec->frame_size;
1421         opkt.dts = opkt.pts = av_rescale_delta(ist->st->time_base, pkt->dts,
1422                                                (AVRational){1, ist->st->codec->sample_rate}, duration, &ist->filter_in_rescale_delta_last,
1423                                                ost->st->time_base) - ost_tb_start_time;
1424     }
1425
1426     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1427     opkt.flags    = pkt->flags;
1428
1429     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1430     if (  ost->st->codec->codec_id != AV_CODEC_ID_H264
1431        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG1VIDEO
1432        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG2VIDEO
1433        && ost->st->codec->codec_id != AV_CODEC_ID_VC1
1434        ) {
1435         if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY)) {
1436             opkt.buf = av_buffer_create(opkt.data, opkt.size, av_buffer_default_free, NULL, 0);
1437             if (!opkt.buf)
1438                 exit(1);
1439         }
1440     } else {
1441         opkt.data = pkt->data;
1442         opkt.size = pkt->size;
1443     }
1444
1445     if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (of->ctx->oformat->flags & AVFMT_RAWPICTURE)) {
1446         /* store AVPicture in AVPacket, as expected by the output format */
1447         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1448         opkt.data = (uint8_t *)&pict;
1449         opkt.size = sizeof(AVPicture);
1450         opkt.flags |= AV_PKT_FLAG_KEY;
1451     }
1452
1453     write_frame(of->ctx, &opkt, ost);
1454     ost->st->codec->frame_number++;
1455 }
1456
1457 static void rate_emu_sleep(InputStream *ist)
1458 {
1459     if (input_files[ist->file_index]->rate_emu) {
1460         int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
1461         int64_t now = av_gettime() - ist->start;
1462         if (pts > now)
1463             av_usleep(pts - now);
1464     }
1465 }
1466
1467 int guess_input_channel_layout(InputStream *ist)
1468 {
1469     AVCodecContext *dec = ist->st->codec;
1470
1471     if (!dec->channel_layout) {
1472         char layout_name[256];
1473
1474         if (dec->channels > ist->guess_layout_max)
1475             return 0;
1476         dec->channel_layout = av_get_default_channel_layout(dec->channels);
1477         if (!dec->channel_layout)
1478             return 0;
1479         av_get_channel_layout_string(layout_name, sizeof(layout_name),
1480                                      dec->channels, dec->channel_layout);
1481         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for  Input Stream "
1482                "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
1483     }
1484     return 1;
1485 }
1486
1487 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1488 {
1489     AVFrame *decoded_frame, *f;
1490     AVCodecContext *avctx = ist->st->codec;
1491     int i, ret, err = 0, resample_changed;
1492     AVRational decoded_frame_tb;
1493
1494     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1495         return AVERROR(ENOMEM);
1496     if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1497         return AVERROR(ENOMEM);
1498     decoded_frame = ist->decoded_frame;
1499
1500     update_benchmark(NULL);
1501     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1502     update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
1503
1504     if (ret >= 0 && avctx->sample_rate <= 0) {
1505         av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
1506         ret = AVERROR_INVALIDDATA;
1507     }
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     if (!*got_output || ret < 0) {
1644         if (!pkt->size) {
1645             for (i = 0; i < ist->nb_filters; i++)
1646 #if 1
1647                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1648 #else
1649                 av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
1650 #endif
1651         }
1652         return ret;
1653     }
1654
1655     if(ist->top_field_first>=0)
1656         decoded_frame->top_field_first = ist->top_field_first;
1657
1658     best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
1659     if(best_effort_timestamp != AV_NOPTS_VALUE)
1660         ist->next_pts = ist->pts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);
1661
1662     if (debug_ts) {
1663         av_log(NULL, AV_LOG_INFO, "decoder -> ist_index:%d type:video "
1664                 "frame_pts:%s frame_pts_time:%s best_effort_ts:%"PRId64" best_effort_ts_time:%s keyframe:%d frame_type:%d \n",
1665                 ist->st->index, av_ts2str(decoded_frame->pts),
1666                 av_ts2timestr(decoded_frame->pts, &ist->st->time_base),
1667                 best_effort_timestamp,
1668                 av_ts2timestr(best_effort_timestamp, &ist->st->time_base),
1669                 decoded_frame->key_frame, decoded_frame->pict_type);
1670     }
1671
1672     pkt->size = 0;
1673
1674     rate_emu_sleep(ist);
1675
1676     if (ist->st->sample_aspect_ratio.num)
1677         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1678
1679     resample_changed = ist->resample_width   != decoded_frame->width  ||
1680                        ist->resample_height  != decoded_frame->height ||
1681                        ist->resample_pix_fmt != decoded_frame->format;
1682     if (resample_changed) {
1683         av_log(NULL, AV_LOG_INFO,
1684                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1685                ist->file_index, ist->st->index,
1686                ist->resample_width,  ist->resample_height,  av_get_pix_fmt_name(ist->resample_pix_fmt),
1687                decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
1688
1689         ist->resample_width   = decoded_frame->width;
1690         ist->resample_height  = decoded_frame->height;
1691         ist->resample_pix_fmt = decoded_frame->format;
1692
1693         for (i = 0; i < nb_filtergraphs; i++) {
1694             if (ist_in_filtergraph(filtergraphs[i], ist) && ist->reinit_filters &&
1695                 configure_filtergraph(filtergraphs[i]) < 0) {
1696                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1697                 exit(1);
1698             }
1699         }
1700     }
1701
1702     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
1703     for (i = 0; i < ist->nb_filters; i++) {
1704         if (!frame_sample_aspect->num)
1705             *frame_sample_aspect = ist->st->sample_aspect_ratio;
1706
1707         if (i < ist->nb_filters - 1) {
1708             f = ist->filter_frame;
1709             err = av_frame_ref(f, decoded_frame);
1710             if (err < 0)
1711                 break;
1712         } else
1713             f = decoded_frame;
1714         if(av_buffersrc_add_frame_flags(ist->filters[i]->filter, f,
1715                                         AV_BUFFERSRC_FLAG_PUSH)<0) {
1716             av_log(NULL, AV_LOG_FATAL, "Failed to inject frame into filter network\n");
1717             exit(1);
1718         }
1719
1720     }
1721
1722     av_frame_unref(ist->filter_frame);
1723     av_frame_unref(decoded_frame);
1724     av_free(buffer_to_free);
1725     return err < 0 ? err : ret;
1726 }
1727
1728 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1729 {
1730     AVSubtitle subtitle;
1731     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
1732                                           &subtitle, got_output, pkt);
1733     if (ret < 0 || !*got_output) {
1734         if (!pkt->size)
1735             sub2video_flush(ist);
1736         return ret;
1737     }
1738
1739     if (ist->fix_sub_duration) {
1740         if (ist->prev_sub.got_output) {
1741             int end = av_rescale(subtitle.pts - ist->prev_sub.subtitle.pts,
1742                                  1000, AV_TIME_BASE);
1743             if (end < ist->prev_sub.subtitle.end_display_time) {
1744                 av_log(ist->st->codec, AV_LOG_DEBUG,
1745                        "Subtitle duration reduced from %d to %d\n",
1746                        ist->prev_sub.subtitle.end_display_time, end);
1747                 ist->prev_sub.subtitle.end_display_time = end;
1748             }
1749         }
1750         FFSWAP(int,        *got_output, ist->prev_sub.got_output);
1751         FFSWAP(int,        ret,         ist->prev_sub.ret);
1752         FFSWAP(AVSubtitle, subtitle,    ist->prev_sub.subtitle);
1753     }
1754
1755     sub2video_update(ist, &subtitle);
1756
1757     if (!*got_output || !subtitle.num_rects)
1758         return ret;
1759
1760     rate_emu_sleep(ist);
1761
1762     for (i = 0; i < nb_output_streams; i++) {
1763         OutputStream *ost = output_streams[i];
1764
1765         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1766             continue;
1767
1768         do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle);
1769     }
1770
1771     avsubtitle_free(&subtitle);
1772     return ret;
1773 }
1774
1775 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1776 static int output_packet(InputStream *ist, const AVPacket *pkt)
1777 {
1778     int ret = 0, i;
1779     int got_output = 0;
1780
1781     AVPacket avpkt;
1782     if (!ist->saw_first_ts) {
1783         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;
1784         ist->pts = 0;
1785         if (pkt != NULL && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
1786             ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1787             ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
1788         }
1789         ist->saw_first_ts = 1;
1790     }
1791
1792     if (ist->next_dts == AV_NOPTS_VALUE)
1793         ist->next_dts = ist->dts;
1794     if (ist->next_pts == AV_NOPTS_VALUE)
1795         ist->next_pts = ist->pts;
1796
1797     if (pkt == NULL) {
1798         /* EOF handling */
1799         av_init_packet(&avpkt);
1800         avpkt.data = NULL;
1801         avpkt.size = 0;
1802         goto handle_eof;
1803     } else {
1804         avpkt = *pkt;
1805     }
1806
1807     if (pkt->dts != AV_NOPTS_VALUE) {
1808         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1809         if (ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
1810             ist->next_pts = ist->pts = ist->dts;
1811     }
1812
1813     // while we have more to decode or while the decoder did output something on EOF
1814     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
1815         int duration;
1816     handle_eof:
1817
1818         ist->pts = ist->next_pts;
1819         ist->dts = ist->next_dts;
1820
1821         if (avpkt.size && avpkt.size != pkt->size) {
1822             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
1823                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1824             ist->showed_multi_packet_warning = 1;
1825         }
1826
1827         switch (ist->st->codec->codec_type) {
1828         case AVMEDIA_TYPE_AUDIO:
1829             ret = decode_audio    (ist, &avpkt, &got_output);
1830             break;
1831         case AVMEDIA_TYPE_VIDEO:
1832             ret = decode_video    (ist, &avpkt, &got_output);
1833             if (avpkt.duration) {
1834                 duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
1835             } else if(ist->st->codec->time_base.num != 0 && ist->st->codec->time_base.den != 0) {
1836                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1837                 duration = ((int64_t)AV_TIME_BASE *
1838                                 ist->st->codec->time_base.num * ticks) /
1839                                 ist->st->codec->time_base.den;
1840             } else
1841                 duration = 0;
1842
1843             if(ist->dts != AV_NOPTS_VALUE && duration) {
1844                 ist->next_dts += duration;
1845             }else
1846                 ist->next_dts = AV_NOPTS_VALUE;
1847
1848             if (got_output)
1849                 ist->next_pts += duration; //FIXME the duration is not correct in some cases
1850             break;
1851         case AVMEDIA_TYPE_SUBTITLE:
1852             ret = transcode_subtitles(ist, &avpkt, &got_output);
1853             break;
1854         default:
1855             return -1;
1856         }
1857
1858         if (ret < 0)
1859             return ret;
1860
1861         avpkt.dts=
1862         avpkt.pts= AV_NOPTS_VALUE;
1863
1864         // touch data and size only if not EOF
1865         if (pkt) {
1866             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
1867                 ret = avpkt.size;
1868             avpkt.data += ret;
1869             avpkt.size -= ret;
1870         }
1871         if (!got_output) {
1872             continue;
1873         }
1874     }
1875
1876     /* handle stream copy */
1877     if (!ist->decoding_needed) {
1878         rate_emu_sleep(ist);
1879         ist->dts = ist->next_dts;
1880         switch (ist->st->codec->codec_type) {
1881         case AVMEDIA_TYPE_AUDIO:
1882             ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1883                              ist->st->codec->sample_rate;
1884             break;
1885         case AVMEDIA_TYPE_VIDEO:
1886             if (ist->framerate.num) {
1887                 // TODO: Remove work-around for c99-to-c89 issue 7
1888                 AVRational time_base_q = AV_TIME_BASE_Q;
1889                 int64_t next_dts = av_rescale_q(ist->next_dts, time_base_q, av_inv_q(ist->framerate));
1890                 ist->next_dts = av_rescale_q(next_dts + 1, av_inv_q(ist->framerate), time_base_q);
1891             } else if (pkt->duration) {
1892                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
1893             } else if(ist->st->codec->time_base.num != 0) {
1894                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
1895                 ist->next_dts += ((int64_t)AV_TIME_BASE *
1896                                   ist->st->codec->time_base.num * ticks) /
1897                                   ist->st->codec->time_base.den;
1898             }
1899             break;
1900         }
1901         ist->pts = ist->dts;
1902         ist->next_pts = ist->next_dts;
1903     }
1904     for (i = 0; pkt && i < nb_output_streams; i++) {
1905         OutputStream *ost = output_streams[i];
1906
1907         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
1908             continue;
1909
1910         do_streamcopy(ist, ost, pkt);
1911     }
1912
1913     return 0;
1914 }
1915
1916 static void print_sdp(void)
1917 {
1918     char sdp[16384];
1919     int i;
1920     AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
1921
1922     if (!avc)
1923         exit(1);
1924     for (i = 0; i < nb_output_files; i++)
1925         avc[i] = output_files[i]->ctx;
1926
1927     av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
1928     printf("SDP:\n%s\n", sdp);
1929     fflush(stdout);
1930     av_freep(&avc);
1931 }
1932
1933 static int init_input_stream(int ist_index, char *error, int error_len)
1934 {
1935     int ret;
1936     InputStream *ist = input_streams[ist_index];
1937
1938     if (ist->decoding_needed) {
1939         AVCodec *codec = ist->dec;
1940         if (!codec) {
1941             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
1942                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
1943             return AVERROR(EINVAL);
1944         }
1945
1946         av_opt_set_int(ist->st->codec, "refcounted_frames", 1, 0);
1947
1948         if (!av_dict_get(ist->opts, "threads", NULL, 0))
1949             av_dict_set(&ist->opts, "threads", "auto", 0);
1950         if ((ret = avcodec_open2(ist->st->codec, codec, &ist->opts)) < 0) {
1951             if (ret == AVERROR_EXPERIMENTAL)
1952                 abort_codec_experimental(codec, 0);
1953             snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
1954                     ist->file_index, ist->st->index);
1955             return ret;
1956         }
1957         assert_avoptions(ist->opts);
1958     }
1959
1960     ist->next_pts = AV_NOPTS_VALUE;
1961     ist->next_dts = AV_NOPTS_VALUE;
1962     ist->is_start = 1;
1963
1964     return 0;
1965 }
1966
1967 static InputStream *get_input_stream(OutputStream *ost)
1968 {
1969     if (ost->source_index >= 0)
1970         return input_streams[ost->source_index];
1971     return NULL;
1972 }
1973
1974 static int compare_int64(const void *a, const void *b)
1975 {
1976     int64_t va = *(int64_t *)a, vb = *(int64_t *)b;
1977     return va < vb ? -1 : va > vb ? +1 : 0;
1978 }
1979
1980 static void parse_forced_key_frames(char *kf, OutputStream *ost,
1981                                     AVCodecContext *avctx)
1982 {
1983     char *p;
1984     int n = 1, i, size, index = 0;
1985     int64_t t, *pts;
1986
1987     for (p = kf; *p; p++)
1988         if (*p == ',')
1989             n++;
1990     size = n;
1991     pts = av_malloc(sizeof(*pts) * size);
1992     if (!pts) {
1993         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
1994         exit(1);
1995     }
1996
1997     p = kf;
1998     for (i = 0; i < n; i++) {
1999         char *next = strchr(p, ',');
2000
2001         if (next)
2002             *next++ = 0;
2003
2004         if (!memcmp(p, "chapters", 8)) {
2005
2006             AVFormatContext *avf = output_files[ost->file_index]->ctx;
2007             int j;
2008
2009             if (avf->nb_chapters > INT_MAX - size ||
2010                 !(pts = av_realloc_f(pts, size += avf->nb_chapters - 1,
2011                                      sizeof(*pts)))) {
2012                 av_log(NULL, AV_LOG_FATAL,
2013                        "Could not allocate forced key frames array.\n");
2014                 exit(1);
2015             }
2016             t = p[8] ? parse_time_or_die("force_key_frames", p + 8, 1) : 0;
2017             t = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
2018
2019             for (j = 0; j < avf->nb_chapters; j++) {
2020                 AVChapter *c = avf->chapters[j];
2021                 av_assert1(index < size);
2022                 pts[index++] = av_rescale_q(c->start, c->time_base,
2023                                             avctx->time_base) + t;
2024             }
2025
2026         } else {
2027
2028             t = parse_time_or_die("force_key_frames", p, 1);
2029             av_assert1(index < size);
2030             pts[index++] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
2031
2032         }
2033
2034         p = next;
2035     }
2036
2037     av_assert0(index == size);
2038     qsort(pts, size, sizeof(*pts), compare_int64);
2039     ost->forced_kf_count = size;
2040     ost->forced_kf_pts   = pts;
2041 }
2042
2043 static void report_new_stream(int input_index, AVPacket *pkt)
2044 {
2045     InputFile *file = input_files[input_index];
2046     AVStream *st = file->ctx->streams[pkt->stream_index];
2047
2048     if (pkt->stream_index < file->nb_streams_warn)
2049         return;
2050     av_log(file->ctx, AV_LOG_WARNING,
2051            "New %s stream %d:%d at pos:%"PRId64" and DTS:%ss\n",
2052            av_get_media_type_string(st->codec->codec_type),
2053            input_index, pkt->stream_index,
2054            pkt->pos, av_ts2timestr(pkt->dts, &st->time_base));
2055     file->nb_streams_warn = pkt->stream_index + 1;
2056 }
2057
2058 static int transcode_init(void)
2059 {
2060     int ret = 0, i, j, k;
2061     AVFormatContext *oc;
2062     AVCodecContext *codec;
2063     OutputStream *ost;
2064     InputStream *ist;
2065     char error[1024];
2066     int want_sdp = 1;
2067
2068     /* init framerate emulation */
2069     for (i = 0; i < nb_input_files; i++) {
2070         InputFile *ifile = input_files[i];
2071         if (ifile->rate_emu)
2072             for (j = 0; j < ifile->nb_streams; j++)
2073                 input_streams[j + ifile->ist_index]->start = av_gettime();
2074     }
2075
2076     /* output stream init */
2077     for (i = 0; i < nb_output_files; i++) {
2078         oc = output_files[i]->ctx;
2079         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2080             av_dump_format(oc, i, oc->filename, 1);
2081             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2082             return AVERROR(EINVAL);
2083         }
2084     }
2085
2086     /* init complex filtergraphs */
2087     for (i = 0; i < nb_filtergraphs; i++)
2088         if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
2089             return ret;
2090
2091     /* for each output stream, we compute the right encoding parameters */
2092     for (i = 0; i < nb_output_streams; i++) {
2093         AVCodecContext *icodec = NULL;
2094         ost = output_streams[i];
2095         oc  = output_files[ost->file_index]->ctx;
2096         ist = get_input_stream(ost);
2097
2098         if (ost->attachment_filename)
2099             continue;
2100
2101         codec  = ost->st->codec;
2102
2103         if (ist) {
2104             icodec = ist->st->codec;
2105
2106             ost->st->disposition          = ist->st->disposition;
2107             codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
2108             codec->chroma_sample_location = icodec->chroma_sample_location;
2109         }
2110
2111         if (ost->stream_copy) {
2112             uint64_t extra_size;
2113
2114             av_assert0(ist && !ost->filter);
2115
2116             extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2117
2118             if (extra_size > INT_MAX) {
2119                 return AVERROR(EINVAL);
2120             }
2121
2122             /* if stream_copy is selected, no need to decode or encode */
2123             codec->codec_id   = icodec->codec_id;
2124             codec->codec_type = icodec->codec_type;
2125
2126             if (!codec->codec_tag) {
2127                 unsigned int codec_tag;
2128                 if (!oc->oformat->codec_tag ||
2129                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2130                      !av_codec_get_tag2(oc->oformat->codec_tag, icodec->codec_id, &codec_tag))
2131                     codec->codec_tag = icodec->codec_tag;
2132             }
2133
2134             codec->bit_rate       = icodec->bit_rate;
2135             codec->rc_max_rate    = icodec->rc_max_rate;
2136             codec->rc_buffer_size = icodec->rc_buffer_size;
2137             codec->field_order    = icodec->field_order;
2138             codec->extradata      = av_mallocz(extra_size);
2139             if (!codec->extradata) {
2140                 return AVERROR(ENOMEM);
2141             }
2142             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2143             codec->extradata_size= icodec->extradata_size;
2144             codec->bits_per_coded_sample  = icodec->bits_per_coded_sample;
2145
2146             codec->time_base = ist->st->time_base;
2147             /*
2148              * Avi is a special case here because it supports variable fps but
2149              * having the fps and timebase differe significantly adds quite some
2150              * overhead
2151              */
2152             if(!strcmp(oc->oformat->name, "avi")) {
2153                 if ( copy_tb<0 && av_q2d(ist->st->r_frame_rate) >= av_q2d(ist->st->avg_frame_rate)
2154                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(ist->st->time_base)
2155                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(icodec->time_base)
2156                                && av_q2d(ist->st->time_base) < 1.0/500 && av_q2d(icodec->time_base) < 1.0/500
2157                      || copy_tb==2){
2158                     codec->time_base.num = ist->st->r_frame_rate.den;
2159                     codec->time_base.den = 2*ist->st->r_frame_rate.num;
2160                     codec->ticks_per_frame = 2;
2161                 } else if (   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2162                                  && av_q2d(ist->st->time_base) < 1.0/500
2163                     || copy_tb==0){
2164                     codec->time_base = icodec->time_base;
2165                     codec->time_base.num *= icodec->ticks_per_frame;
2166                     codec->time_base.den *= 2;
2167                     codec->ticks_per_frame = 2;
2168                 }
2169             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2170                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2171                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2172                       && strcmp(oc->oformat->name, "f4v")
2173             ) {
2174                 if(   copy_tb<0 && icodec->time_base.den
2175                                 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
2176                                 && av_q2d(ist->st->time_base) < 1.0/500
2177                    || copy_tb==0){
2178                     codec->time_base = icodec->time_base;
2179                     codec->time_base.num *= icodec->ticks_per_frame;
2180                 }
2181             }
2182             if (   codec->codec_tag == AV_RL32("tmcd")
2183                 && icodec->time_base.num < icodec->time_base.den
2184                 && icodec->time_base.num > 0
2185                 && 121LL*icodec->time_base.num > icodec->time_base.den) {
2186                 codec->time_base = icodec->time_base;
2187             }
2188
2189             if (ist && !ost->frame_rate.num)
2190                 ost->frame_rate = ist->framerate;
2191             if(ost->frame_rate.num)
2192                 codec->time_base = av_inv_q(ost->frame_rate);
2193
2194             av_reduce(&codec->time_base.num, &codec->time_base.den,
2195                         codec->time_base.num, codec->time_base.den, INT_MAX);
2196
2197             switch (codec->codec_type) {
2198             case AVMEDIA_TYPE_AUDIO:
2199                 if (audio_volume != 256) {
2200                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2201                     exit(1);
2202                 }
2203                 codec->channel_layout     = icodec->channel_layout;
2204                 codec->sample_rate        = icodec->sample_rate;
2205                 codec->channels           = icodec->channels;
2206                 codec->frame_size         = icodec->frame_size;
2207                 codec->audio_service_type = icodec->audio_service_type;
2208                 codec->block_align        = icodec->block_align;
2209                 if((codec->block_align == 1 || codec->block_align == 1152 || codec->block_align == 576) && codec->codec_id == AV_CODEC_ID_MP3)
2210                     codec->block_align= 0;
2211                 if(codec->codec_id == AV_CODEC_ID_AC3)
2212                     codec->block_align= 0;
2213                 break;
2214             case AVMEDIA_TYPE_VIDEO:
2215                 codec->pix_fmt            = icodec->pix_fmt;
2216                 codec->width              = icodec->width;
2217                 codec->height             = icodec->height;
2218                 codec->has_b_frames       = icodec->has_b_frames;
2219                 if (!codec->sample_aspect_ratio.num) {
2220                     codec->sample_aspect_ratio   =
2221                     ost->st->sample_aspect_ratio =
2222                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2223                         ist->st->codec->sample_aspect_ratio.num ?
2224                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2225                 }
2226                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2227                 break;
2228             case AVMEDIA_TYPE_SUBTITLE:
2229                 codec->width  = icodec->width;
2230                 codec->height = icodec->height;
2231                 break;
2232             case AVMEDIA_TYPE_DATA:
2233             case AVMEDIA_TYPE_ATTACHMENT:
2234                 break;
2235             default:
2236                 abort();
2237             }
2238         } else {
2239             if (!ost->enc)
2240                 ost->enc = avcodec_find_encoder(codec->codec_id);
2241             if (!ost->enc) {
2242                 /* should only happen when a default codec is not present. */
2243                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
2244                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2245                 ret = AVERROR(EINVAL);
2246                 goto dump_format;
2247             }
2248
2249             if (ist)
2250                 ist->decoding_needed++;
2251             ost->encoding_needed = 1;
2252
2253             if (!ost->filter &&
2254                 (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2255                  codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
2256                     FilterGraph *fg;
2257                     fg = init_simple_filtergraph(ist, ost);
2258                     if (configure_filtergraph(fg)) {
2259                         av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2260                         exit(1);
2261                     }
2262             }
2263
2264             if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2265                 if (ost->filter && !ost->frame_rate.num)
2266                     ost->frame_rate = av_buffersink_get_frame_rate(ost->filter->filter);
2267                 if (ist && !ost->frame_rate.num)
2268                     ost->frame_rate = ist->framerate;
2269                 if (ist && !ost->frame_rate.num)
2270                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25, 1};
2271 //                    ost->frame_rate = ist->st->avg_frame_rate.num ? ist->st->avg_frame_rate : (AVRational){25, 1};
2272                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2273                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2274                     ost->frame_rate = ost->enc->supported_framerates[idx];
2275                 }
2276             }
2277
2278             switch (codec->codec_type) {
2279             case AVMEDIA_TYPE_AUDIO:
2280                 codec->sample_fmt     = ost->filter->filter->inputs[0]->format;
2281                 codec->sample_rate    = ost->filter->filter->inputs[0]->sample_rate;
2282                 codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
2283                 codec->channels       = avfilter_link_get_channels(ost->filter->filter->inputs[0]);
2284                 codec->time_base      = (AVRational){ 1, codec->sample_rate };
2285                 break;
2286             case AVMEDIA_TYPE_VIDEO:
2287                 codec->time_base = av_inv_q(ost->frame_rate);
2288                 if (ost->filter && !(codec->time_base.num && codec->time_base.den))
2289                     codec->time_base = ost->filter->filter->inputs[0]->time_base;
2290                 if (   av_q2d(codec->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
2291                    && (video_sync_method == VSYNC_CFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
2292                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
2293                                                "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
2294                 }
2295                 for (j = 0; j < ost->forced_kf_count; j++)
2296                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2297                                                          AV_TIME_BASE_Q,
2298                                                          codec->time_base);
2299
2300                 codec->width  = ost->filter->filter->inputs[0]->w;
2301                 codec->height = ost->filter->filter->inputs[0]->h;
2302                 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
2303                     ost->frame_aspect_ratio.num ? // overridden by the -aspect cli option
2304                     av_mul_q(ost->frame_aspect_ratio, (AVRational){ codec->height, codec->width }) :
2305                     ost->filter->filter->inputs[0]->sample_aspect_ratio;
2306                 if (!strncmp(ost->enc->name, "libx264", 7) &&
2307                     codec->pix_fmt == AV_PIX_FMT_NONE &&
2308                     ost->filter->filter->inputs[0]->format != AV_PIX_FMT_YUV420P)
2309                     av_log(NULL, AV_LOG_INFO,
2310                            "No pixel format specified, %s for H.264 encoding chosen.\n"
2311                            "Use -pix_fmt yuv420p for compatibility with outdated media players.\n",
2312                            av_get_pix_fmt_name(ost->filter->filter->inputs[0]->format));
2313                 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
2314
2315                 if (!icodec ||
2316                     codec->width   != icodec->width  ||
2317                     codec->height  != icodec->height ||
2318                     codec->pix_fmt != icodec->pix_fmt) {
2319                     codec->bits_per_raw_sample = frame_bits_per_raw_sample;
2320                 }
2321
2322                 if (ost->forced_keyframes) {
2323                     if (!strncmp(ost->forced_keyframes, "expr:", 5)) {
2324                         ret = av_expr_parse(&ost->forced_keyframes_pexpr, ost->forced_keyframes+5,
2325                                             forced_keyframes_const_names, NULL, NULL, NULL, NULL, 0, NULL);
2326                         if (ret < 0) {
2327                             av_log(NULL, AV_LOG_ERROR,
2328                                    "Invalid force_key_frames expression '%s'\n", ost->forced_keyframes+5);
2329                             return ret;
2330                         }
2331                         ost->forced_keyframes_expr_const_values[FKF_N] = 0;
2332                         ost->forced_keyframes_expr_const_values[FKF_N_FORCED] = 0;
2333                         ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] = NAN;
2334                         ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] = NAN;
2335                     } else {
2336                         parse_forced_key_frames(ost->forced_keyframes, ost, ost->st->codec);
2337                     }
2338                 }
2339                 break;
2340             case AVMEDIA_TYPE_SUBTITLE:
2341                 codec->time_base = (AVRational){1, 1000};
2342                 if (!codec->width) {
2343                     codec->width     = input_streams[ost->source_index]->st->codec->width;
2344                     codec->height    = input_streams[ost->source_index]->st->codec->height;
2345                 }
2346                 break;
2347             default:
2348                 abort();
2349                 break;
2350             }
2351             /* two pass mode */
2352             if (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
2353                 char logfilename[1024];
2354                 FILE *f;
2355
2356                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2357                          ost->logfile_prefix ? ost->logfile_prefix :
2358                                                DEFAULT_PASS_LOGFILENAME_PREFIX,
2359                          i);
2360                 if (!strcmp(ost->enc->name, "libx264")) {
2361                     av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
2362                 } else {
2363                     if (codec->flags & CODEC_FLAG_PASS2) {
2364                         char  *logbuffer;
2365                         size_t logbuffer_size;
2366                         if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2367                             av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2368                                    logfilename);
2369                             exit(1);
2370                         }
2371                         codec->stats_in = logbuffer;
2372                     }
2373                     if (codec->flags & CODEC_FLAG_PASS1) {
2374                         f = fopen(logfilename, "wb");
2375                         if (!f) {
2376                             av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2377                                 logfilename, strerror(errno));
2378                             exit(1);
2379                         }
2380                         ost->logfile = f;
2381                     }
2382                 }
2383             }
2384         }
2385     }
2386
2387     /* open each encoder */
2388     for (i = 0; i < nb_output_streams; i++) {
2389         ost = output_streams[i];
2390         if (ost->encoding_needed) {
2391             AVCodec      *codec = ost->enc;
2392             AVCodecContext *dec = NULL;
2393
2394             if ((ist = get_input_stream(ost)))
2395                 dec = ist->st->codec;
2396             if (dec && dec->subtitle_header) {
2397                 /* ASS code assumes this buffer is null terminated so add extra byte. */
2398                 ost->st->codec->subtitle_header = av_mallocz(dec->subtitle_header_size + 1);
2399                 if (!ost->st->codec->subtitle_header) {
2400                     ret = AVERROR(ENOMEM);
2401                     goto dump_format;
2402                 }
2403                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2404                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2405             }
2406             if (!av_dict_get(ost->opts, "threads", NULL, 0))
2407                 av_dict_set(&ost->opts, "threads", "auto", 0);
2408             if ((ret = avcodec_open2(ost->st->codec, codec, &ost->opts)) < 0) {
2409                 if (ret == AVERROR_EXPERIMENTAL)
2410                     abort_codec_experimental(codec, 1);
2411                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2412                         ost->file_index, ost->index);
2413                 goto dump_format;
2414             }
2415             if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
2416                 !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
2417                 av_buffersink_set_frame_size(ost->filter->filter,
2418                                              ost->st->codec->frame_size);
2419             assert_avoptions(ost->opts);
2420             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2421                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2422                                              " It takes bits/s as argument, not kbits/s\n");
2423             extra_size += ost->st->codec->extradata_size;
2424
2425             if (ost->st->codec->me_threshold)
2426                 input_streams[ost->source_index]->st->codec->debug |= FF_DEBUG_MV;
2427         } else {
2428             av_opt_set_dict(ost->st->codec, &ost->opts);
2429         }
2430     }
2431
2432     /* init input streams */
2433     for (i = 0; i < nb_input_streams; i++)
2434         if ((ret = init_input_stream(i, error, sizeof(error))) < 0) {
2435             for (i = 0; i < nb_output_streams; i++) {
2436                 ost = output_streams[i];
2437                 avcodec_close(ost->st->codec);
2438             }
2439             goto dump_format;
2440         }
2441
2442     /* discard unused programs */
2443     for (i = 0; i < nb_input_files; i++) {
2444         InputFile *ifile = input_files[i];
2445         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2446             AVProgram *p = ifile->ctx->programs[j];
2447             int discard  = AVDISCARD_ALL;
2448
2449             for (k = 0; k < p->nb_stream_indexes; k++)
2450                 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
2451                     discard = AVDISCARD_DEFAULT;
2452                     break;
2453                 }
2454             p->discard = discard;
2455         }
2456     }
2457
2458     /* open files and write file headers */
2459     for (i = 0; i < nb_output_files; i++) {
2460         oc = output_files[i]->ctx;
2461         oc->interrupt_callback = int_cb;
2462         if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
2463             char errbuf[128];
2464             const char *errbuf_ptr = errbuf;
2465             if (av_strerror(ret, errbuf, sizeof(errbuf)) < 0)
2466                 errbuf_ptr = strerror(AVUNERROR(ret));
2467             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?): %s", i, errbuf_ptr);
2468             ret = AVERROR(EINVAL);
2469             goto dump_format;
2470         }
2471 //         assert_avoptions(output_files[i]->opts);
2472         if (strcmp(oc->oformat->name, "rtp")) {
2473             want_sdp = 0;
2474         }
2475     }
2476
2477  dump_format:
2478     /* dump the file output parameters - cannot be done before in case
2479        of stream copy */
2480     for (i = 0; i < nb_output_files; i++) {
2481         av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
2482     }
2483
2484     /* dump the stream mapping */
2485     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2486     for (i = 0; i < nb_input_streams; i++) {
2487         ist = input_streams[i];
2488
2489         for (j = 0; j < ist->nb_filters; j++) {
2490             if (ist->filters[j]->graph->graph_desc) {
2491                 av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
2492                        ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
2493                        ist->filters[j]->name);
2494                 if (nb_filtergraphs > 1)
2495                     av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
2496                 av_log(NULL, AV_LOG_INFO, "\n");
2497             }
2498         }
2499     }
2500
2501     for (i = 0; i < nb_output_streams; i++) {
2502         ost = output_streams[i];
2503
2504         if (ost->attachment_filename) {
2505             /* an attached file */
2506             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
2507                    ost->attachment_filename, ost->file_index, ost->index);
2508             continue;
2509         }
2510
2511         if (ost->filter && ost->filter->graph->graph_desc) {
2512             /* output from a complex graph */
2513             av_log(NULL, AV_LOG_INFO, "  %s", ost->filter->name);
2514             if (nb_filtergraphs > 1)
2515                 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
2516
2517             av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
2518                    ost->index, ost->enc ? ost->enc->name : "?");
2519             continue;
2520         }
2521
2522         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
2523                input_streams[ost->source_index]->file_index,
2524                input_streams[ost->source_index]->st->index,
2525                ost->file_index,
2526                ost->index);
2527         if (ost->sync_ist != input_streams[ost->source_index])
2528             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2529                    ost->sync_ist->file_index,
2530                    ost->sync_ist->st->index);
2531         if (ost->stream_copy)
2532             av_log(NULL, AV_LOG_INFO, " (copy)");
2533         else
2534             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
2535                    input_streams[ost->source_index]->dec->name : "?",
2536                    ost->enc ? ost->enc->name : "?");
2537         av_log(NULL, AV_LOG_INFO, "\n");
2538     }
2539
2540     if (ret) {
2541         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2542         return ret;
2543     }
2544
2545     if (want_sdp) {
2546         print_sdp();
2547     }
2548
2549     return 0;
2550 }
2551
2552 /* Return 1 if there remain streams where more output is wanted, 0 otherwise. */
2553 static int need_output(void)
2554 {
2555     int i;
2556
2557     for (i = 0; i < nb_output_streams; i++) {
2558         OutputStream *ost    = output_streams[i];
2559         OutputFile *of       = output_files[ost->file_index];
2560         AVFormatContext *os  = output_files[ost->file_index]->ctx;
2561
2562         if (ost->finished ||
2563             (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2564             continue;
2565         if (ost->frame_number >= ost->max_frames) {
2566             int j;
2567             for (j = 0; j < of->ctx->nb_streams; j++)
2568                 close_output_stream(output_streams[of->ost_index + j]);
2569             continue;
2570         }
2571
2572         return 1;
2573     }
2574
2575     return 0;
2576 }
2577
2578 /**
2579  * Select the output stream to process.
2580  *
2581  * @return  selected output stream, or NULL if none available
2582  */
2583 static OutputStream *choose_output(void)
2584 {
2585     int i;
2586     int64_t opts_min = INT64_MAX;
2587     OutputStream *ost_min = NULL;
2588
2589     for (i = 0; i < nb_output_streams; i++) {
2590         OutputStream *ost = output_streams[i];
2591         int64_t opts = av_rescale_q(ost->st->cur_dts, ost->st->time_base,
2592                                     AV_TIME_BASE_Q);
2593         if (!ost->unavailable && !ost->finished && opts < opts_min) {
2594             opts_min = opts;
2595             ost_min  = ost;
2596         }
2597     }
2598     return ost_min;
2599 }
2600
2601 static int check_keyboard_interaction(int64_t cur_time)
2602 {
2603     int i, ret, key;
2604     static int64_t last_time;
2605     if (received_nb_signals)
2606         return AVERROR_EXIT;
2607     /* read_key() returns 0 on EOF */
2608     if(cur_time - last_time >= 100000 && !run_as_daemon){
2609         key =  read_key();
2610         last_time = cur_time;
2611     }else
2612         key = -1;
2613     if (key == 'q')
2614         return AVERROR_EXIT;
2615     if (key == '+') av_log_set_level(av_log_get_level()+10);
2616     if (key == '-') av_log_set_level(av_log_get_level()-10);
2617     if (key == 's') qp_hist     ^= 1;
2618     if (key == 'h'){
2619         if (do_hex_dump){
2620             do_hex_dump = do_pkt_dump = 0;
2621         } else if(do_pkt_dump){
2622             do_hex_dump = 1;
2623         } else
2624             do_pkt_dump = 1;
2625         av_log_set_level(AV_LOG_DEBUG);
2626     }
2627     if (key == 'c' || key == 'C'){
2628         char buf[4096], target[64], command[256], arg[256] = {0};
2629         double time;
2630         int k, n = 0;
2631         fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
2632         i = 0;
2633         while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
2634             if (k > 0)
2635                 buf[i++] = k;
2636         buf[i] = 0;
2637         if (k > 0 &&
2638             (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
2639             av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
2640                    target, time, command, arg);
2641             for (i = 0; i < nb_filtergraphs; i++) {
2642                 FilterGraph *fg = filtergraphs[i];
2643                 if (fg->graph) {
2644                     if (time < 0) {
2645                         ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
2646                                                           key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
2647                         fprintf(stderr, "Command reply for stream %d: ret:%d res:%s\n", i, ret, buf);
2648                     } else {
2649                         ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
2650                     }
2651                 }
2652             }
2653         } else {
2654             av_log(NULL, AV_LOG_ERROR,
2655                    "Parse error, at least 3 arguments were expected, "
2656                    "only %d given in string '%s'\n", n, buf);
2657         }
2658     }
2659     if (key == 'd' || key == 'D'){
2660         int debug=0;
2661         if(key == 'D') {
2662             debug = input_streams[0]->st->codec->debug<<1;
2663             if(!debug) debug = 1;
2664             while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2665                 debug += debug;
2666         }else
2667             if(scanf("%d", &debug)!=1)
2668                 fprintf(stderr,"error parsing debug value\n");
2669         for(i=0;i<nb_input_streams;i++) {
2670             input_streams[i]->st->codec->debug = debug;
2671         }
2672         for(i=0;i<nb_output_streams;i++) {
2673             OutputStream *ost = output_streams[i];
2674             ost->st->codec->debug = debug;
2675         }
2676         if(debug) av_log_set_level(AV_LOG_DEBUG);
2677         fprintf(stderr,"debug=%d\n", debug);
2678     }
2679     if (key == '?'){
2680         fprintf(stderr, "key    function\n"
2681                         "?      show this help\n"
2682                         "+      increase verbosity\n"
2683                         "-      decrease verbosity\n"
2684                         "c      Send command to filtergraph\n"
2685                         "D      cycle through available debug modes\n"
2686                         "h      dump packets/hex press to cycle through the 3 states\n"
2687                         "q      quit\n"
2688                         "s      Show QP histogram\n"
2689         );
2690     }
2691     return 0;
2692 }
2693
2694 #if HAVE_PTHREADS
2695 static void *input_thread(void *arg)
2696 {
2697     InputFile *f = arg;
2698     int ret = 0;
2699
2700     while (!transcoding_finished && ret >= 0) {
2701         AVPacket pkt;
2702         ret = av_read_frame(f->ctx, &pkt);
2703
2704         if (ret == AVERROR(EAGAIN)) {
2705             av_usleep(10000);
2706             ret = 0;
2707             continue;
2708         } else if (ret < 0)
2709             break;
2710
2711         pthread_mutex_lock(&f->fifo_lock);
2712         while (!av_fifo_space(f->fifo))
2713             pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
2714
2715         av_dup_packet(&pkt);
2716         av_fifo_generic_write(f->fifo, &pkt, sizeof(pkt), NULL);
2717
2718         pthread_mutex_unlock(&f->fifo_lock);
2719     }
2720
2721     f->finished = 1;
2722     return NULL;
2723 }
2724
2725 static void free_input_threads(void)
2726 {
2727     int i;
2728
2729     if (nb_input_files == 1)
2730         return;
2731
2732     transcoding_finished = 1;
2733
2734     for (i = 0; i < nb_input_files; i++) {
2735         InputFile *f = input_files[i];
2736         AVPacket pkt;
2737
2738         if (!f->fifo || f->joined)
2739             continue;
2740
2741         pthread_mutex_lock(&f->fifo_lock);
2742         while (av_fifo_size(f->fifo)) {
2743             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2744             av_free_packet(&pkt);
2745         }
2746         pthread_cond_signal(&f->fifo_cond);
2747         pthread_mutex_unlock(&f->fifo_lock);
2748
2749         pthread_join(f->thread, NULL);
2750         f->joined = 1;
2751
2752         while (av_fifo_size(f->fifo)) {
2753             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2754             av_free_packet(&pkt);
2755         }
2756         av_fifo_free(f->fifo);
2757     }
2758 }
2759
2760 static int init_input_threads(void)
2761 {
2762     int i, ret;
2763
2764     if (nb_input_files == 1)
2765         return 0;
2766
2767     for (i = 0; i < nb_input_files; i++) {
2768         InputFile *f = input_files[i];
2769
2770         if (!(f->fifo = av_fifo_alloc(8*sizeof(AVPacket))))
2771             return AVERROR(ENOMEM);
2772
2773         pthread_mutex_init(&f->fifo_lock, NULL);
2774         pthread_cond_init (&f->fifo_cond, NULL);
2775
2776         if ((ret = pthread_create(&f->thread, NULL, input_thread, f)))
2777             return AVERROR(ret);
2778     }
2779     return 0;
2780 }
2781
2782 static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
2783 {
2784     int ret = 0;
2785
2786     pthread_mutex_lock(&f->fifo_lock);
2787
2788     if (av_fifo_size(f->fifo)) {
2789         av_fifo_generic_read(f->fifo, pkt, sizeof(*pkt), NULL);
2790         pthread_cond_signal(&f->fifo_cond);
2791     } else {
2792         if (f->finished)
2793             ret = AVERROR_EOF;
2794         else
2795             ret = AVERROR(EAGAIN);
2796     }
2797
2798     pthread_mutex_unlock(&f->fifo_lock);
2799
2800     return ret;
2801 }
2802 #endif
2803
2804 static int get_input_packet(InputFile *f, AVPacket *pkt)
2805 {
2806 #if HAVE_PTHREADS
2807     if (nb_input_files > 1)
2808         return get_input_packet_mt(f, pkt);
2809 #endif
2810     return av_read_frame(f->ctx, pkt);
2811 }
2812
2813 static int got_eagain(void)
2814 {
2815     int i;
2816     for (i = 0; i < nb_output_streams; i++)
2817         if (output_streams[i]->unavailable)
2818             return 1;
2819     return 0;
2820 }
2821
2822 static void reset_eagain(void)
2823 {
2824     int i;
2825     for (i = 0; i < nb_input_files; i++)
2826         input_files[i]->eagain = 0;
2827     for (i = 0; i < nb_output_streams; i++)
2828         output_streams[i]->unavailable = 0;
2829 }
2830
2831 /*
2832  * Return
2833  * - 0 -- one packet was read and processed
2834  * - AVERROR(EAGAIN) -- no packets were available for selected file,
2835  *   this function should be called again
2836  * - AVERROR_EOF -- this function should not be called again
2837  */
2838 static int process_input(int file_index)
2839 {
2840     InputFile *ifile = input_files[file_index];
2841     AVFormatContext *is;
2842     InputStream *ist;
2843     AVPacket pkt;
2844     int ret, i, j;
2845
2846     is  = ifile->ctx;
2847     ret = get_input_packet(ifile, &pkt);
2848
2849     if (ret == AVERROR(EAGAIN)) {
2850         ifile->eagain = 1;
2851         return ret;
2852     }
2853     if (ret < 0) {
2854         if (ret != AVERROR_EOF) {
2855             print_error(is->filename, ret);
2856             if (exit_on_error)
2857                 exit(1);
2858         }
2859         ifile->eof_reached = 1;
2860
2861         for (i = 0; i < ifile->nb_streams; i++) {
2862             ist = input_streams[ifile->ist_index + i];
2863             if (ist->decoding_needed)
2864                 output_packet(ist, NULL);
2865
2866             /* mark all outputs that don't go through lavfi as finished */
2867             for (j = 0; j < nb_output_streams; j++) {
2868                 OutputStream *ost = output_streams[j];
2869
2870                 if (ost->source_index == ifile->ist_index + i &&
2871                     (ost->stream_copy || ost->enc->type == AVMEDIA_TYPE_SUBTITLE))
2872                     close_output_stream(ost);
2873             }
2874         }
2875
2876         return AVERROR(EAGAIN);
2877     }
2878
2879     reset_eagain();
2880
2881     if (do_pkt_dump) {
2882         av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2883                          is->streams[pkt.stream_index]);
2884     }
2885     /* the following test is needed in case new streams appear
2886        dynamically in stream : we ignore them */
2887     if (pkt.stream_index >= ifile->nb_streams) {
2888         report_new_stream(file_index, &pkt);
2889         goto discard_packet;
2890     }
2891
2892     ist = input_streams[ifile->ist_index + pkt.stream_index];
2893     if (ist->discard)
2894         goto discard_packet;
2895
2896     if (debug_ts) {
2897         av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
2898                "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",
2899                ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
2900                av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &AV_TIME_BASE_Q),
2901                av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &AV_TIME_BASE_Q),
2902                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
2903                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
2904                av_ts2str(input_files[ist->file_index]->ts_offset),
2905                av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
2906     }
2907
2908     if(!ist->wrap_correction_done && is->start_time != AV_NOPTS_VALUE && ist->st->pts_wrap_bits < 64){
2909         int64_t stime, stime2;
2910         // Correcting starttime based on the enabled streams
2911         // 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.
2912         //       so we instead do it here as part of discontinuity handling
2913         if (   ist->next_dts == AV_NOPTS_VALUE
2914             && ifile->ts_offset == -is->start_time
2915             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2916             int64_t new_start_time = INT64_MAX;
2917             for (i=0; i<is->nb_streams; i++) {
2918                 AVStream *st = is->streams[i];
2919                 if(st->discard == AVDISCARD_ALL || st->start_time == AV_NOPTS_VALUE)
2920                     continue;
2921                 new_start_time = FFMIN(new_start_time, av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q));
2922             }
2923             if (new_start_time > is->start_time) {
2924                 av_log(is, AV_LOG_VERBOSE, "Correcting start time by %"PRId64"\n", new_start_time - is->start_time);
2925                 ifile->ts_offset = -new_start_time;
2926             }
2927         }
2928
2929         stime = av_rescale_q(is->start_time, AV_TIME_BASE_Q, ist->st->time_base);
2930         stime2= stime + (1ULL<<ist->st->pts_wrap_bits);
2931         ist->wrap_correction_done = 1;
2932
2933         if(stime2 > stime && pkt.dts != AV_NOPTS_VALUE && pkt.dts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
2934             pkt.dts -= 1ULL<<ist->st->pts_wrap_bits;
2935             ist->wrap_correction_done = 0;
2936         }
2937         if(stime2 > stime && pkt.pts != AV_NOPTS_VALUE && pkt.pts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
2938             pkt.pts -= 1ULL<<ist->st->pts_wrap_bits;
2939             ist->wrap_correction_done = 0;
2940         }
2941     }
2942
2943     if (pkt.dts != AV_NOPTS_VALUE)
2944         pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2945     if (pkt.pts != AV_NOPTS_VALUE)
2946         pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2947
2948     if (pkt.pts != AV_NOPTS_VALUE)
2949         pkt.pts *= ist->ts_scale;
2950     if (pkt.dts != AV_NOPTS_VALUE)
2951         pkt.dts *= ist->ts_scale;
2952
2953     if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts == AV_NOPTS_VALUE && !copy_ts
2954         && (is->iformat->flags & AVFMT_TS_DISCONT) && ifile->last_ts != AV_NOPTS_VALUE) {
2955         int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2956         int64_t delta   = pkt_dts - ifile->last_ts;
2957         if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
2958             (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
2959                 ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)){
2960             ifile->ts_offset -= delta;
2961             av_log(NULL, AV_LOG_DEBUG,
2962                    "Inter stream timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2963                    delta, ifile->ts_offset);
2964             pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2965             if (pkt.pts != AV_NOPTS_VALUE)
2966                 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2967         }
2968     }
2969
2970     if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE &&
2971         !copy_ts) {
2972         int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2973         int64_t delta   = pkt_dts - ist->next_dts;
2974         if (is->iformat->flags & AVFMT_TS_DISCONT) {
2975         if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
2976             (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
2977                 ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
2978             pkt_dts+1<ist->pts){
2979             ifile->ts_offset -= delta;
2980             av_log(NULL, AV_LOG_DEBUG,
2981                    "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2982                    delta, ifile->ts_offset);
2983             pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2984             if (pkt.pts != AV_NOPTS_VALUE)
2985                 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2986         }
2987         } else {
2988             if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
2989                 (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
2990                ) {
2991                 av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
2992                 pkt.dts = AV_NOPTS_VALUE;
2993             }
2994             if (pkt.pts != AV_NOPTS_VALUE){
2995                 int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
2996                 delta   = pkt_pts - ist->next_dts;
2997                 if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
2998                     (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
2999                    ) {
3000                     av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
3001                     pkt.pts = AV_NOPTS_VALUE;
3002                 }
3003             }
3004         }
3005     }
3006
3007     if (pkt.dts != AV_NOPTS_VALUE)
3008         ifile->last_ts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3009
3010     if (debug_ts) {
3011         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",
3012                ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
3013                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
3014                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
3015                av_ts2str(input_files[ist->file_index]->ts_offset),
3016                av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
3017     }
3018
3019     sub2video_heartbeat(ist, pkt.pts);
3020
3021     ret = output_packet(ist, &pkt);
3022     if (ret < 0) {
3023         char buf[128];
3024         av_strerror(ret, buf, sizeof(buf));
3025         av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d: %s\n",
3026                 ist->file_index, ist->st->index, buf);
3027         if (exit_on_error)
3028             exit(1);
3029     }
3030
3031 discard_packet:
3032     av_free_packet(&pkt);
3033
3034     return 0;
3035 }
3036
3037 /**
3038  * Perform a step of transcoding for the specified filter graph.
3039  *
3040  * @param[in]  graph     filter graph to consider
3041  * @param[out] best_ist  input stream where a frame would allow to continue
3042  * @return  0 for success, <0 for error
3043  */
3044 static int transcode_from_filter(FilterGraph *graph, InputStream **best_ist)
3045 {
3046     int i, ret;
3047     int nb_requests, nb_requests_max = 0;
3048     InputFilter *ifilter;
3049     InputStream *ist;
3050
3051     *best_ist = NULL;
3052     ret = avfilter_graph_request_oldest(graph->graph);
3053     if (ret >= 0)
3054         return reap_filters();
3055
3056     if (ret == AVERROR_EOF) {
3057         ret = reap_filters();
3058         for (i = 0; i < graph->nb_outputs; i++)
3059             close_output_stream(graph->outputs[i]->ost);
3060         return ret;
3061     }
3062     if (ret != AVERROR(EAGAIN))
3063         return ret;
3064
3065     for (i = 0; i < graph->nb_inputs; i++) {
3066         ifilter = graph->inputs[i];
3067         ist = ifilter->ist;
3068         if (input_files[ist->file_index]->eagain ||
3069             input_files[ist->file_index]->eof_reached)
3070             continue;
3071         nb_requests = av_buffersrc_get_nb_failed_requests(ifilter->filter);
3072         if (nb_requests > nb_requests_max) {
3073             nb_requests_max = nb_requests;
3074             *best_ist = ist;
3075         }
3076     }
3077
3078     if (!*best_ist)
3079         for (i = 0; i < graph->nb_outputs; i++)
3080             graph->outputs[i]->ost->unavailable = 1;
3081
3082     return 0;
3083 }
3084
3085 /**
3086  * Run a single step of transcoding.
3087  *
3088  * @return  0 for success, <0 for error
3089  */
3090 static int transcode_step(void)
3091 {
3092     OutputStream *ost;
3093     InputStream  *ist;
3094     int ret;
3095
3096     ost = choose_output();
3097     if (!ost) {
3098         if (got_eagain()) {
3099             reset_eagain();
3100             av_usleep(10000);
3101             return 0;
3102         }
3103         av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from, finishing.\n");
3104         return AVERROR_EOF;
3105     }
3106
3107     if (ost->filter) {
3108         if ((ret = transcode_from_filter(ost->filter->graph, &ist)) < 0)
3109             return ret;
3110         if (!ist)
3111             return 0;
3112     } else {
3113         av_assert0(ost->source_index >= 0);
3114         ist = input_streams[ost->source_index];
3115     }
3116
3117     ret = process_input(ist->file_index);
3118     if (ret == AVERROR(EAGAIN)) {
3119         if (input_files[ist->file_index]->eagain)
3120             ost->unavailable = 1;
3121         return 0;
3122     }
3123     if (ret < 0)
3124         return ret == AVERROR_EOF ? 0 : ret;
3125
3126     return reap_filters();
3127 }
3128
3129 /*
3130  * The following code is the main loop of the file converter
3131  */
3132 static int transcode(void)
3133 {
3134     int ret, i;
3135     AVFormatContext *os;
3136     OutputStream *ost;
3137     InputStream *ist;
3138     int64_t timer_start;
3139
3140     ret = transcode_init();
3141     if (ret < 0)
3142         goto fail;
3143
3144     if (stdin_interaction) {
3145         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
3146     }
3147
3148     timer_start = av_gettime();
3149
3150 #if HAVE_PTHREADS
3151     if ((ret = init_input_threads()) < 0)
3152         goto fail;
3153 #endif
3154
3155     while (!received_sigterm) {
3156         int64_t cur_time= av_gettime();
3157
3158         /* if 'q' pressed, exits */
3159         if (stdin_interaction)
3160             if (check_keyboard_interaction(cur_time) < 0)
3161                 break;
3162
3163         /* check if there's any stream where output is still needed */
3164         if (!need_output()) {
3165             av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
3166             break;
3167         }
3168
3169         ret = transcode_step();
3170         if (ret < 0) {
3171             if (ret == AVERROR_EOF || ret == AVERROR(EAGAIN))
3172                 continue;
3173
3174             av_log(NULL, AV_LOG_ERROR, "Error while filtering.\n");
3175             break;
3176         }
3177
3178         /* dump report by using the output first video and audio streams */
3179         print_report(0, timer_start, cur_time);
3180     }
3181 #if HAVE_PTHREADS
3182     free_input_threads();
3183 #endif
3184
3185     /* at the end of stream, we must flush the decoder buffers */
3186     for (i = 0; i < nb_input_streams; i++) {
3187         ist = input_streams[i];
3188         if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
3189             output_packet(ist, NULL);
3190         }
3191     }
3192     flush_encoders();
3193
3194     term_exit();
3195
3196     /* write the trailer if needed and close file */
3197     for (i = 0; i < nb_output_files; i++) {
3198         os = output_files[i]->ctx;
3199         av_write_trailer(os);
3200     }
3201
3202     /* dump report by using the first video and audio streams */
3203     print_report(1, timer_start, av_gettime());
3204
3205     /* close each encoder */
3206     for (i = 0; i < nb_output_streams; i++) {
3207         ost = output_streams[i];
3208         if (ost->encoding_needed) {
3209             av_freep(&ost->st->codec->stats_in);
3210             avcodec_close(ost->st->codec);
3211         }
3212     }
3213
3214     /* close each decoder */
3215     for (i = 0; i < nb_input_streams; i++) {
3216         ist = input_streams[i];
3217         if (ist->decoding_needed) {
3218             avcodec_close(ist->st->codec);
3219         }
3220     }
3221
3222     /* finished ! */
3223     ret = 0;
3224
3225  fail:
3226 #if HAVE_PTHREADS
3227     free_input_threads();
3228 #endif
3229
3230     if (output_streams) {
3231         for (i = 0; i < nb_output_streams; i++) {
3232             ost = output_streams[i];
3233             if (ost) {
3234                 if (ost->stream_copy)
3235                     av_freep(&ost->st->codec->extradata);
3236                 if (ost->logfile) {
3237                     fclose(ost->logfile);
3238                     ost->logfile = NULL;
3239                 }
3240                 av_freep(&ost->st->codec->subtitle_header);
3241                 av_free(ost->forced_kf_pts);
3242                 av_dict_free(&ost->opts);
3243                 av_dict_free(&ost->swr_opts);
3244                 av_dict_free(&ost->resample_opts);
3245             }
3246         }
3247     }
3248     return ret;
3249 }
3250
3251
3252 static int64_t getutime(void)
3253 {
3254 #if HAVE_GETRUSAGE
3255     struct rusage rusage;
3256
3257     getrusage(RUSAGE_SELF, &rusage);
3258     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
3259 #elif HAVE_GETPROCESSTIMES
3260     HANDLE proc;
3261     FILETIME c, e, k, u;
3262     proc = GetCurrentProcess();
3263     GetProcessTimes(proc, &c, &e, &k, &u);
3264     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
3265 #else
3266     return av_gettime();
3267 #endif
3268 }
3269
3270 static int64_t getmaxrss(void)
3271 {
3272 #if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
3273     struct rusage rusage;
3274     getrusage(RUSAGE_SELF, &rusage);
3275     return (int64_t)rusage.ru_maxrss * 1024;
3276 #elif HAVE_GETPROCESSMEMORYINFO
3277     HANDLE proc;
3278     PROCESS_MEMORY_COUNTERS memcounters;
3279     proc = GetCurrentProcess();
3280     memcounters.cb = sizeof(memcounters);
3281     GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
3282     return memcounters.PeakPagefileUsage;
3283 #else
3284     return 0;
3285 #endif
3286 }
3287
3288 static void log_callback_null(void *ptr, int level, const char *fmt, va_list vl)
3289 {
3290 }
3291
3292 int main(int argc, char **argv)
3293 {
3294     int ret;
3295     int64_t ti;
3296
3297     atexit(exit_program);
3298
3299     setvbuf(stderr,NULL,_IONBF,0); /* win32 runtime needs this */
3300
3301     av_log_set_flags(AV_LOG_SKIP_REPEATED);
3302     parse_loglevel(argc, argv, options);
3303
3304     if(argc>1 && !strcmp(argv[1], "-d")){
3305         run_as_daemon=1;
3306         av_log_set_callback(log_callback_null);
3307         argc--;
3308         argv++;
3309     }
3310
3311     avcodec_register_all();
3312 #if CONFIG_AVDEVICE
3313     avdevice_register_all();
3314 #endif
3315     avfilter_register_all();
3316     av_register_all();
3317     avformat_network_init();
3318
3319     show_banner(argc, argv, options);
3320
3321     term_init();
3322
3323     /* parse options and open all input/output files */
3324     ret = ffmpeg_parse_options(argc, argv);
3325     if (ret < 0)
3326         exit(1);
3327
3328     if (nb_output_files <= 0 && nb_input_files == 0) {
3329         show_usage();
3330         av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
3331         exit(1);
3332     }
3333
3334     /* file converter / grab */
3335     if (nb_output_files <= 0) {
3336         av_log(NULL, AV_LOG_FATAL, "At least one output file must be specified\n");
3337         exit(1);
3338     }
3339
3340 //     if (nb_input_files == 0) {
3341 //         av_log(NULL, AV_LOG_FATAL, "At least one input file must be specified\n");
3342 //         exit(1);
3343 //     }
3344
3345     current_time = ti = getutime();
3346     if (transcode() < 0)
3347         exit(1);
3348     ti = getutime() - ti;
3349     if (do_benchmark) {
3350         printf("bench: utime=%0.3fs\n", ti / 1000000.0);
3351     }
3352
3353     exit(received_nb_signals ? 255 : 0);
3354     return 0;
3355 }