ffmpeg: Do not fill gap before the first decodable frame on single stream input files...
[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 "libswresample/swresample.h"
44 #include "libavutil/opt.h"
45 #include "libavutil/channel_layout.h"
46 #include "libavutil/parseutils.h"
47 #include "libavutil/samplefmt.h"
48 #include "libavutil/fifo.h"
49 #include "libavutil/intreadwrite.h"
50 #include "libavutil/dict.h"
51 #include "libavutil/mathematics.h"
52 #include "libavutil/pixdesc.h"
53 #include "libavutil/avstring.h"
54 #include "libavutil/libm.h"
55 #include "libavutil/imgutils.h"
56 #include "libavutil/timestamp.h"
57 #include "libavutil/bprint.h"
58 #include "libavutil/time.h"
59 #include "libavformat/os_support.h"
60
61 #include "libavformat/ffm.h" // not public API
62
63 # include "libavfilter/avcodec.h"
64 # include "libavfilter/avfilter.h"
65 # include "libavfilter/buffersrc.h"
66 # include "libavfilter/buffersink.h"
67
68 #if HAVE_SYS_RESOURCE_H
69 #include <sys/time.h>
70 #include <sys/types.h>
71 #include <sys/resource.h>
72 #elif HAVE_GETPROCESSTIMES
73 #include <windows.h>
74 #endif
75 #if HAVE_GETPROCESSMEMORYINFO
76 #include <windows.h>
77 #include <psapi.h>
78 #endif
79
80 #if HAVE_SYS_SELECT_H
81 #include <sys/select.h>
82 #endif
83
84 #if HAVE_TERMIOS_H
85 #include <fcntl.h>
86 #include <sys/ioctl.h>
87 #include <sys/time.h>
88 #include <termios.h>
89 #elif HAVE_KBHIT
90 #include <conio.h>
91 #endif
92
93 #if HAVE_PTHREADS
94 #include <pthread.h>
95 #endif
96
97 #include <time.h>
98
99 #include "ffmpeg.h"
100 #include "cmdutils.h"
101
102 #include "libavutil/avassert.h"
103
104 const char program_name[] = "ffmpeg";
105 const int program_birth_year = 2000;
106
107 static FILE *vstats_file;
108
109 const char *const forced_keyframes_const_names[] = {
110     "n",
111     "n_forced",
112     "prev_forced_n",
113     "prev_forced_t",
114     "t",
115     NULL
116 };
117
118 static void do_video_stats(OutputStream *ost, int frame_size);
119 static int64_t getutime(void);
120 static int64_t getmaxrss(void);
121
122 static int run_as_daemon  = 0;
123 static int64_t video_size = 0;
124 static int64_t audio_size = 0;
125 static int64_t subtitle_size = 0;
126 static int64_t extra_size = 0;
127 static int nb_frames_dup = 0;
128 static int nb_frames_drop = 0;
129 static int64_t decode_error_stat[2];
130
131 static int current_time;
132 AVIOContext *progress_avio = NULL;
133
134 static uint8_t *subtitle_out;
135
136 #if HAVE_PTHREADS
137 /* signal to input threads that they should exit; set by the main thread */
138 static int transcoding_finished;
139 #endif
140
141 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
142
143 InputStream **input_streams = NULL;
144 int        nb_input_streams = 0;
145 InputFile   **input_files   = NULL;
146 int        nb_input_files   = 0;
147
148 OutputStream **output_streams = NULL;
149 int         nb_output_streams = 0;
150 OutputFile   **output_files   = NULL;
151 int         nb_output_files   = 0;
152
153 FilterGraph **filtergraphs;
154 int        nb_filtergraphs;
155
156 #if HAVE_TERMIOS_H
157
158 /* init terminal so that we can grab keys */
159 static struct termios oldtty;
160 static int restore_tty;
161 #endif
162
163 static void free_input_threads(void);
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_program(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
337             tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
338                              |INLCR|IGNCR|ICRNL|IXON);
339             tty.c_oflag |= OPOST;
340             tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
341             tty.c_cflag &= ~(CSIZE|PARENB);
342             tty.c_cflag |= CS8;
343             tty.c_cc[VMIN] = 1;
344             tty.c_cc[VTIME] = 0;
345
346             tcsetattr (0, TCSANOW, &tty);
347         }
348         signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
349     }
350 #endif
351     avformat_network_deinit();
352
353     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
354     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
355 #ifdef SIGXCPU
356     signal(SIGXCPU, sigterm_handler);
357 #endif
358 }
359
360 /* read a key without blocking */
361 static int read_key(void)
362 {
363     unsigned char ch;
364 #if HAVE_TERMIOS_H
365     int n = 1;
366     struct timeval tv;
367     fd_set rfds;
368
369     FD_ZERO(&rfds);
370     FD_SET(0, &rfds);
371     tv.tv_sec = 0;
372     tv.tv_usec = 0;
373     n = select(1, &rfds, NULL, NULL, &tv);
374     if (n > 0) {
375         n = read(0, &ch, 1);
376         if (n == 1)
377             return ch;
378
379         return n;
380     }
381 #elif HAVE_KBHIT
382 #    if HAVE_PEEKNAMEDPIPE
383     static int is_pipe;
384     static HANDLE input_handle;
385     DWORD dw, nchars;
386     if(!input_handle){
387         input_handle = GetStdHandle(STD_INPUT_HANDLE);
388         is_pipe = !GetConsoleMode(input_handle, &dw);
389     }
390
391     if (stdin->_cnt > 0) {
392         read(0, &ch, 1);
393         return ch;
394     }
395     if (is_pipe) {
396         /* When running under a GUI, you will end here. */
397         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL)) {
398             // input pipe may have been closed by the program that ran ffmpeg
399             return -1;
400         }
401         //Read it
402         if(nchars != 0) {
403             read(0, &ch, 1);
404             return ch;
405         }else{
406             return -1;
407         }
408     }
409 #    endif
410     if(kbhit())
411         return(getch());
412 #endif
413     return -1;
414 }
415
416 static int decode_interrupt_cb(void *ctx)
417 {
418     return received_nb_signals > 1;
419 }
420
421 const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
422
423 static void ffmpeg_cleanup(int ret)
424 {
425     int i, j;
426
427     if (do_benchmark) {
428         int maxrss = getmaxrss() / 1024;
429         printf("bench: maxrss=%ikB\n", maxrss);
430     }
431
432     for (i = 0; i < nb_filtergraphs; i++) {
433         avfilter_graph_free(&filtergraphs[i]->graph);
434         for (j = 0; j < filtergraphs[i]->nb_inputs; j++) {
435             av_freep(&filtergraphs[i]->inputs[j]->name);
436             av_freep(&filtergraphs[i]->inputs[j]);
437         }
438         av_freep(&filtergraphs[i]->inputs);
439         for (j = 0; j < filtergraphs[i]->nb_outputs; j++) {
440             av_freep(&filtergraphs[i]->outputs[j]->name);
441             av_freep(&filtergraphs[i]->outputs[j]);
442         }
443         av_freep(&filtergraphs[i]->outputs);
444         av_freep(&filtergraphs[i]->graph_desc);
445         av_freep(&filtergraphs[i]);
446     }
447     av_freep(&filtergraphs);
448
449     av_freep(&subtitle_out);
450
451     /* close files */
452     for (i = 0; i < nb_output_files; i++) {
453         AVFormatContext *s = output_files[i]->ctx;
454         if (s && s->oformat && !(s->oformat->flags & AVFMT_NOFILE) && s->pb)
455             avio_close(s->pb);
456         avformat_free_context(s);
457         av_dict_free(&output_files[i]->opts);
458         av_freep(&output_files[i]);
459     }
460     for (i = 0; i < nb_output_streams; i++) {
461         AVBitStreamFilterContext *bsfc = output_streams[i]->bitstream_filters;
462         while (bsfc) {
463             AVBitStreamFilterContext *next = bsfc->next;
464             av_bitstream_filter_close(bsfc);
465             bsfc = next;
466         }
467         output_streams[i]->bitstream_filters = NULL;
468         avcodec_free_frame(&output_streams[i]->filtered_frame);
469
470         av_parser_close(output_streams[i]->parser);
471
472         av_freep(&output_streams[i]->forced_keyframes);
473         av_expr_free(output_streams[i]->forced_keyframes_pexpr);
474         av_freep(&output_streams[i]->avfilter);
475         av_freep(&output_streams[i]->logfile_prefix);
476         av_freep(&output_streams[i]);
477     }
478 #if HAVE_PTHREADS
479     free_input_threads();
480 #endif
481     for (i = 0; i < nb_input_files; i++) {
482         avformat_close_input(&input_files[i]->ctx);
483         av_freep(&input_files[i]);
484     }
485     for (i = 0; i < nb_input_streams; i++) {
486         av_frame_free(&input_streams[i]->decoded_frame);
487         av_frame_free(&input_streams[i]->filter_frame);
488         av_dict_free(&input_streams[i]->opts);
489         avsubtitle_free(&input_streams[i]->prev_sub.subtitle);
490         av_frame_free(&input_streams[i]->sub2video.frame);
491         av_freep(&input_streams[i]->filters);
492         av_freep(&input_streams[i]);
493     }
494
495     if (vstats_file)
496         fclose(vstats_file);
497     av_free(vstats_filename);
498
499     av_freep(&input_streams);
500     av_freep(&input_files);
501     av_freep(&output_streams);
502     av_freep(&output_files);
503
504     uninit_opts();
505
506     avformat_network_deinit();
507
508     if (received_sigterm) {
509         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
510                (int) received_sigterm);
511     }
512     term_exit();
513 }
514
515 void assert_avoptions(AVDictionary *m)
516 {
517     AVDictionaryEntry *t;
518     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
519         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
520         exit_program(1);
521     }
522 }
523
524 static void abort_codec_experimental(AVCodec *c, int encoder)
525 {
526     exit_program(1);
527 }
528
529 static void update_benchmark(const char *fmt, ...)
530 {
531     if (do_benchmark_all) {
532         int64_t t = getutime();
533         va_list va;
534         char buf[1024];
535
536         if (fmt) {
537             va_start(va, fmt);
538             vsnprintf(buf, sizeof(buf), fmt, va);
539             va_end(va);
540             printf("bench: %8"PRIu64" %s \n", t - current_time, buf);
541         }
542         current_time = t;
543     }
544 }
545
546 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
547 {
548     AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
549     AVCodecContext          *avctx = ost->st->codec;
550     int ret;
551
552     if ((avctx->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
553         (avctx->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
554         pkt->pts = pkt->dts = AV_NOPTS_VALUE;
555
556     /*
557      * Audio encoders may split the packets --  #frames in != #packets out.
558      * But there is no reordering, so we can limit the number of output packets
559      * by simply dropping them here.
560      * Counting encoded video frames needs to be done separately because of
561      * reordering, see do_video_out()
562      */
563     if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
564         if (ost->frame_number >= ost->max_frames) {
565             av_free_packet(pkt);
566             return;
567         }
568         ost->frame_number++;
569     }
570
571     while (bsfc) {
572         AVPacket new_pkt = *pkt;
573         int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
574                                            &new_pkt.data, &new_pkt.size,
575                                            pkt->data, pkt->size,
576                                            pkt->flags & AV_PKT_FLAG_KEY);
577         if(a == 0 && new_pkt.data != pkt->data && new_pkt.destruct) {
578             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
579             if(t) {
580                 memcpy(t, new_pkt.data, new_pkt.size);
581                 memset(t + new_pkt.size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
582                 new_pkt.data = t;
583                 new_pkt.buf = NULL;
584                 a = 1;
585             } else
586                 a = AVERROR(ENOMEM);
587         }
588         if (a > 0) {
589             av_free_packet(pkt);
590             new_pkt.buf = av_buffer_create(new_pkt.data, new_pkt.size,
591                                            av_buffer_default_free, NULL, 0);
592             if (!new_pkt.buf)
593                 exit_program(1);
594         } else if (a < 0) {
595             av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
596                    bsfc->filter->name, pkt->stream_index,
597                    avctx->codec ? avctx->codec->name : "copy");
598             print_error("", a);
599             if (exit_on_error)
600                 exit_program(1);
601         }
602         *pkt = new_pkt;
603
604         bsfc = bsfc->next;
605     }
606
607     if (!(s->oformat->flags & AVFMT_NOTIMESTAMPS) &&
608         (avctx->codec_type == AVMEDIA_TYPE_AUDIO || avctx->codec_type == AVMEDIA_TYPE_VIDEO) &&
609         pkt->dts != AV_NOPTS_VALUE &&
610         ost->last_mux_dts != AV_NOPTS_VALUE) {
611       int64_t max = ost->last_mux_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
612       if (pkt->dts < max) {
613         int loglevel = max - pkt->dts > 2 || avctx->codec_type == AVMEDIA_TYPE_VIDEO ? AV_LOG_WARNING : AV_LOG_DEBUG;
614         av_log(s, loglevel, "Non-monotonous DTS in output stream "
615                "%d:%d; previous: %"PRId64", current: %"PRId64"; ",
616                ost->file_index, ost->st->index, ost->last_mux_dts, pkt->dts);
617         if (exit_on_error) {
618             av_log(NULL, AV_LOG_FATAL, "aborting.\n");
619             exit_program(1);
620         }
621         av_log(s, loglevel, "changing to %"PRId64". This may result "
622                "in incorrect timestamps in the output file.\n",
623                max);
624         if(pkt->pts >= pkt->dts)
625             pkt->pts = FFMAX(pkt->pts, max);
626         pkt->dts = max;
627       }
628     }
629     ost->last_mux_dts = pkt->dts;
630
631     pkt->stream_index = ost->index;
632
633     if (debug_ts) {
634         av_log(NULL, AV_LOG_INFO, "muxer <- type:%s "
635                 "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s size:%d\n",
636                 av_get_media_type_string(ost->st->codec->codec_type),
637                 av_ts2str(pkt->pts), av_ts2timestr(pkt->pts, &ost->st->time_base),
638                 av_ts2str(pkt->dts), av_ts2timestr(pkt->dts, &ost->st->time_base),
639                 pkt->size
640               );
641     }
642
643     ret = av_interleaved_write_frame(s, pkt);
644     if (ret < 0) {
645         print_error("av_interleaved_write_frame()", ret);
646         exit_program(1);
647     }
648 }
649
650 static void close_output_stream(OutputStream *ost)
651 {
652     OutputFile *of = output_files[ost->file_index];
653
654     ost->finished = 1;
655     if (of->shortest) {
656         int64_t end = av_rescale_q(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, AV_TIME_BASE_Q);
657         of->recording_time = FFMIN(of->recording_time, end);
658     }
659 }
660
661 static int check_recording_time(OutputStream *ost)
662 {
663     OutputFile *of = output_files[ost->file_index];
664
665     if (of->recording_time != INT64_MAX &&
666         av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
667                       AV_TIME_BASE_Q) >= 0) {
668         close_output_stream(ost);
669         return 0;
670     }
671     return 1;
672 }
673
674 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
675                          AVFrame *frame)
676 {
677     AVCodecContext *enc = ost->st->codec;
678     AVPacket pkt;
679     int got_packet = 0;
680
681     av_init_packet(&pkt);
682     pkt.data = NULL;
683     pkt.size = 0;
684
685     if (!check_recording_time(ost))
686         return;
687
688     if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
689         frame->pts = ost->sync_opts;
690     ost->sync_opts = frame->pts + frame->nb_samples;
691
692     av_assert0(pkt.size || !pkt.data);
693     update_benchmark(NULL);
694     if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
695         av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
696         exit_program(1);
697     }
698     update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
699
700     if (got_packet) {
701         if (pkt.pts != AV_NOPTS_VALUE)
702             pkt.pts      = av_rescale_q(pkt.pts,      enc->time_base, ost->st->time_base);
703         if (pkt.dts != AV_NOPTS_VALUE)
704             pkt.dts      = av_rescale_q(pkt.dts,      enc->time_base, ost->st->time_base);
705         if (pkt.duration > 0)
706             pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
707
708         if (debug_ts) {
709             av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
710                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
711                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
712                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
713         }
714
715         audio_size += pkt.size;
716         write_frame(s, &pkt, ost);
717
718         av_free_packet(&pkt);
719     }
720 }
721
722 static void do_subtitle_out(AVFormatContext *s,
723                             OutputStream *ost,
724                             InputStream *ist,
725                             AVSubtitle *sub)
726 {
727     int subtitle_out_max_size = 1024 * 1024;
728     int subtitle_out_size, nb, i;
729     AVCodecContext *enc;
730     AVPacket pkt;
731     int64_t pts;
732
733     if (sub->pts == AV_NOPTS_VALUE) {
734         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
735         if (exit_on_error)
736             exit_program(1);
737         return;
738     }
739
740     enc = ost->st->codec;
741
742     if (!subtitle_out) {
743         subtitle_out = av_malloc(subtitle_out_max_size);
744     }
745
746     /* Note: DVB subtitle need one packet to draw them and one other
747        packet to clear them */
748     /* XXX: signal it in the codec context ? */
749     if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE)
750         nb = 2;
751     else
752         nb = 1;
753
754     /* shift timestamp to honor -ss and make check_recording_time() work with -t */
755     pts = sub->pts;
756     if (output_files[ost->file_index]->start_time != AV_NOPTS_VALUE)
757         pts -= output_files[ost->file_index]->start_time;
758     for (i = 0; i < nb; i++) {
759         ost->sync_opts = av_rescale_q(pts, AV_TIME_BASE_Q, enc->time_base);
760         if (!check_recording_time(ost))
761             return;
762
763         sub->pts = pts;
764         // start_display_time is required to be 0
765         sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
766         sub->end_display_time  -= sub->start_display_time;
767         sub->start_display_time = 0;
768         if (i == 1)
769             sub->num_rects = 0;
770         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
771                                                     subtitle_out_max_size, sub);
772         if (subtitle_out_size < 0) {
773             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
774             exit_program(1);
775         }
776
777         av_init_packet(&pkt);
778         pkt.data = subtitle_out;
779         pkt.size = subtitle_out_size;
780         pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
781         pkt.duration = av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->st->time_base);
782         if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
783             /* XXX: the pts correction is handled here. Maybe handling
784                it in the codec would be better */
785             if (i == 0)
786                 pkt.pts += 90 * sub->start_display_time;
787             else
788                 pkt.pts += 90 * sub->end_display_time;
789         }
790         subtitle_size += pkt.size;
791         write_frame(s, &pkt, ost);
792     }
793 }
794
795 static void do_video_out(AVFormatContext *s,
796                          OutputStream *ost,
797                          AVFrame *in_picture)
798 {
799     int ret, format_video_sync;
800     AVPacket pkt;
801     AVCodecContext *enc = ost->st->codec;
802     int nb_frames, i;
803     double sync_ipts, delta;
804     double duration = 0;
805     int frame_size = 0;
806     InputStream *ist = NULL;
807
808     if (ost->source_index >= 0)
809         ist = input_streams[ost->source_index];
810
811     if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
812         duration = 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base));
813
814     sync_ipts = in_picture->pts;
815     delta = sync_ipts - ost->sync_opts + duration;
816
817     /* by default, we output a single frame */
818     nb_frames = 1;
819
820     format_video_sync = video_sync_method;
821     if (format_video_sync == VSYNC_AUTO) {
822         if(!strcmp(s->oformat->name, "avi")) {
823             format_video_sync = VSYNC_VFR;
824         } else
825             format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : VSYNC_CFR;
826         if (   ist
827             && format_video_sync == VSYNC_CFR
828             && input_files[ist->file_index]->ctx->nb_streams == 1
829             && input_files[ist->file_index]->input_ts_offset == 0) {
830             format_video_sync = VSYNC_VSCFR;
831         }
832     }
833
834     switch (format_video_sync) {
835     case VSYNC_VSCFR:
836         if (ost->frame_number == 0 && delta - duration >= 0.5) {
837             av_log(NULL, AV_LOG_DEBUG, "Not duplicating %d initial frames\n", (int)lrintf(delta - duration));
838             delta = duration;
839             ost->sync_opts = lrint(sync_ipts);
840         }
841     case VSYNC_CFR:
842         // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
843         if (delta < -1.1)
844             nb_frames = 0;
845         else if (delta > 1.1)
846             nb_frames = lrintf(delta);
847         break;
848     case VSYNC_VFR:
849         if (delta <= -0.6)
850             nb_frames = 0;
851         else if (delta > 0.6)
852             ost->sync_opts = lrint(sync_ipts);
853         break;
854     case VSYNC_DROP:
855     case VSYNC_PASSTHROUGH:
856         ost->sync_opts = lrint(sync_ipts);
857         break;
858     default:
859         av_assert0(0);
860     }
861
862     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
863     if (nb_frames == 0) {
864         nb_frames_drop++;
865         av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
866         return;
867     } else if (nb_frames > 1) {
868         if (nb_frames > dts_error_threshold * 30) {
869             av_log(NULL, AV_LOG_ERROR, "%d frame duplication too large, skipping\n", nb_frames - 1);
870             nb_frames_drop++;
871             return;
872         }
873         nb_frames_dup += nb_frames - 1;
874         av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
875     }
876
877   /* duplicates frame if needed */
878   for (i = 0; i < nb_frames; i++) {
879     av_init_packet(&pkt);
880     pkt.data = NULL;
881     pkt.size = 0;
882
883     in_picture->pts = ost->sync_opts;
884
885 #if 1
886     if (!check_recording_time(ost))
887 #else
888     if (ost->frame_number >= ost->max_frames)
889 #endif
890         return;
891
892     if (s->oformat->flags & AVFMT_RAWPICTURE &&
893         enc->codec->id == AV_CODEC_ID_RAWVIDEO) {
894         /* raw pictures are written as AVPicture structure to
895            avoid any copies. We support temporarily the older
896            method. */
897         enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
898         enc->coded_frame->top_field_first  = in_picture->top_field_first;
899         if (enc->coded_frame->interlaced_frame)
900             enc->field_order = enc->coded_frame->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
901         else
902             enc->field_order = AV_FIELD_PROGRESSIVE;
903         pkt.data   = (uint8_t *)in_picture;
904         pkt.size   =  sizeof(AVPicture);
905         pkt.pts    = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
906         pkt.flags |= AV_PKT_FLAG_KEY;
907
908         video_size += pkt.size;
909         write_frame(s, &pkt, ost);
910     } else {
911         int got_packet, forced_keyframe = 0;
912         double pts_time;
913
914         if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME) &&
915             ost->top_field_first >= 0)
916             in_picture->top_field_first = !!ost->top_field_first;
917
918         if (in_picture->interlaced_frame) {
919             if (enc->codec->id == AV_CODEC_ID_MJPEG)
920                 enc->field_order = in_picture->top_field_first ? AV_FIELD_TT:AV_FIELD_BB;
921             else
922                 enc->field_order = in_picture->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
923         } else
924             enc->field_order = AV_FIELD_PROGRESSIVE;
925
926         in_picture->quality = ost->st->codec->global_quality;
927         if (!enc->me_threshold)
928             in_picture->pict_type = 0;
929
930         pts_time = in_picture->pts != AV_NOPTS_VALUE ?
931             in_picture->pts * av_q2d(enc->time_base) : NAN;
932         if (ost->forced_kf_index < ost->forced_kf_count &&
933             in_picture->pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
934             ost->forced_kf_index++;
935             forced_keyframe = 1;
936         } else if (ost->forced_keyframes_pexpr) {
937             double res;
938             ost->forced_keyframes_expr_const_values[FKF_T] = pts_time;
939             res = av_expr_eval(ost->forced_keyframes_pexpr,
940                                ost->forced_keyframes_expr_const_values, NULL);
941             av_dlog(NULL, "force_key_frame: n:%f n_forced:%f prev_forced_n:%f t:%f prev_forced_t:%f -> res:%f\n",
942                     ost->forced_keyframes_expr_const_values[FKF_N],
943                     ost->forced_keyframes_expr_const_values[FKF_N_FORCED],
944                     ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N],
945                     ost->forced_keyframes_expr_const_values[FKF_T],
946                     ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T],
947                     res);
948             if (res) {
949                 forced_keyframe = 1;
950                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] =
951                     ost->forced_keyframes_expr_const_values[FKF_N];
952                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] =
953                     ost->forced_keyframes_expr_const_values[FKF_T];
954                 ost->forced_keyframes_expr_const_values[FKF_N_FORCED] += 1;
955             }
956
957             ost->forced_keyframes_expr_const_values[FKF_N] += 1;
958         }
959         if (forced_keyframe) {
960             in_picture->pict_type = AV_PICTURE_TYPE_I;
961             av_log(NULL, AV_LOG_DEBUG, "Forced keyframe at time %f\n", pts_time);
962         }
963
964         update_benchmark(NULL);
965         ret = avcodec_encode_video2(enc, &pkt, in_picture, &got_packet);
966         update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
967         if (ret < 0) {
968             av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
969             exit_program(1);
970         }
971
972         if (got_packet) {
973             if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
974                 pkt.pts = ost->sync_opts;
975
976             if (pkt.pts != AV_NOPTS_VALUE)
977                 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
978             if (pkt.dts != AV_NOPTS_VALUE)
979                 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
980
981             if (debug_ts) {
982                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
983                     "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
984                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
985                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
986             }
987
988             frame_size = pkt.size;
989             video_size += pkt.size;
990             write_frame(s, &pkt, ost);
991             av_free_packet(&pkt);
992
993             /* if two pass, output log */
994             if (ost->logfile && enc->stats_out) {
995                 fprintf(ost->logfile, "%s", enc->stats_out);
996             }
997         }
998     }
999     ost->sync_opts++;
1000     /*
1001      * For video, number of frames in == number of packets out.
1002      * But there may be reordering, so we can't throw away frames on encoder
1003      * flush, we need to limit them here, before they go into encoder.
1004      */
1005     ost->frame_number++;
1006
1007     if (vstats_filename && frame_size)
1008         do_video_stats(ost, frame_size);
1009   }
1010 }
1011
1012 static double psnr(double d)
1013 {
1014     return -10.0 * log(d) / log(10.0);
1015 }
1016
1017 static void do_video_stats(OutputStream *ost, int frame_size)
1018 {
1019     AVCodecContext *enc;
1020     int frame_number;
1021     double ti1, bitrate, avg_bitrate;
1022
1023     /* this is executed just the first time do_video_stats is called */
1024     if (!vstats_file) {
1025         vstats_file = fopen(vstats_filename, "w");
1026         if (!vstats_file) {
1027             perror("fopen");
1028             exit_program(1);
1029         }
1030     }
1031
1032     enc = ost->st->codec;
1033     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1034         frame_number = ost->st->nb_frames;
1035         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
1036         if (enc->flags&CODEC_FLAG_PSNR)
1037             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
1038
1039         fprintf(vstats_file,"f_size= %6d ", frame_size);
1040         /* compute pts value */
1041         ti1 = ost->st->pts.val * av_q2d(enc->time_base);
1042         if (ti1 < 0.01)
1043             ti1 = 0.01;
1044
1045         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1046         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1047         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1048                (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1049         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1050     }
1051 }
1052
1053 /**
1054  * Get and encode new output from any of the filtergraphs, without causing
1055  * activity.
1056  *
1057  * @return  0 for success, <0 for severe errors
1058  */
1059 static int reap_filters(void)
1060 {
1061     AVFrame *filtered_frame = NULL;
1062     int i;
1063     int64_t frame_pts;
1064
1065     /* Reap all buffers present in the buffer sinks */
1066     for (i = 0; i < nb_output_streams; i++) {
1067         OutputStream *ost = output_streams[i];
1068         OutputFile    *of = output_files[ost->file_index];
1069         int ret = 0;
1070
1071         if (!ost->filter)
1072             continue;
1073
1074         if (!ost->filtered_frame && !(ost->filtered_frame = avcodec_alloc_frame())) {
1075             return AVERROR(ENOMEM);
1076         } else
1077             avcodec_get_frame_defaults(ost->filtered_frame);
1078         filtered_frame = ost->filtered_frame;
1079
1080         while (1) {
1081             ret = av_buffersink_get_frame_flags(ost->filter->filter, filtered_frame,
1082                                                AV_BUFFERSINK_FLAG_NO_REQUEST);
1083             if (ret < 0) {
1084                 if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
1085                     av_log(NULL, AV_LOG_WARNING,
1086                            "Error in av_buffersink_get_frame_flags(): %s\n", av_err2str(ret));
1087                 }
1088                 break;
1089             }
1090             frame_pts = AV_NOPTS_VALUE;
1091             if (filtered_frame->pts != AV_NOPTS_VALUE) {
1092                 int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
1093                 filtered_frame->pts = frame_pts = av_rescale_q(filtered_frame->pts,
1094                                                 ost->filter->filter->inputs[0]->time_base,
1095                                                 ost->st->codec->time_base) -
1096                                     av_rescale_q(start_time,
1097                                                 AV_TIME_BASE_Q,
1098                                                 ost->st->codec->time_base);
1099             }
1100             //if (ost->source_index >= 0)
1101             //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
1102
1103
1104             switch (ost->filter->filter->inputs[0]->type) {
1105             case AVMEDIA_TYPE_VIDEO:
1106                 filtered_frame->pts = frame_pts;
1107                 if (!ost->frame_aspect_ratio.num)
1108                     ost->st->codec->sample_aspect_ratio = filtered_frame->sample_aspect_ratio;
1109
1110                 do_video_out(of->ctx, ost, filtered_frame);
1111                 break;
1112             case AVMEDIA_TYPE_AUDIO:
1113                 filtered_frame->pts = frame_pts;
1114                 if (!(ost->st->codec->codec->capabilities & CODEC_CAP_PARAM_CHANGE) &&
1115                     ost->st->codec->channels != av_frame_get_channels(filtered_frame)) {
1116                     av_log(NULL, AV_LOG_ERROR,
1117                            "Audio filter graph output is not normalized and encoder does not support parameter changes\n");
1118                     break;
1119                 }
1120                 do_audio_out(of->ctx, ost, filtered_frame);
1121                 break;
1122             default:
1123                 // TODO support subtitle filters
1124                 av_assert0(0);
1125             }
1126
1127             av_frame_unref(filtered_frame);
1128         }
1129     }
1130
1131     return 0;
1132 }
1133
1134 static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
1135 {
1136     char buf[1024];
1137     AVBPrint buf_script;
1138     OutputStream *ost;
1139     AVFormatContext *oc;
1140     int64_t total_size;
1141     AVCodecContext *enc;
1142     int frame_number, vid, i;
1143     double bitrate;
1144     int64_t pts = INT64_MIN;
1145     static int64_t last_time = -1;
1146     static int qp_histogram[52];
1147     int hours, mins, secs, us;
1148
1149     if (!print_stats && !is_last_report && !progress_avio)
1150         return;
1151
1152     if (!is_last_report) {
1153         if (last_time == -1) {
1154             last_time = cur_time;
1155             return;
1156         }
1157         if ((cur_time - last_time) < 500000)
1158             return;
1159         last_time = cur_time;
1160     }
1161
1162
1163     oc = output_files[0]->ctx;
1164
1165     total_size = avio_size(oc->pb);
1166     if (total_size <= 0) // FIXME improve avio_size() so it works with non seekable output too
1167         total_size = avio_tell(oc->pb);
1168
1169     buf[0] = '\0';
1170     vid = 0;
1171     av_bprint_init(&buf_script, 0, 1);
1172     for (i = 0; i < nb_output_streams; i++) {
1173         float q = -1;
1174         ost = output_streams[i];
1175         enc = ost->st->codec;
1176         if (!ost->stream_copy && enc->coded_frame)
1177             q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
1178         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1179             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1180             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1181                        ost->file_index, ost->index, q);
1182         }
1183         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1184             float fps, t = (cur_time-timer_start) / 1000000.0;
1185
1186             frame_number = ost->frame_number;
1187             fps = t > 1 ? frame_number / t : 0;
1188             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
1189                      frame_number, fps < 9.95, fps, q);
1190             av_bprintf(&buf_script, "frame=%d\n", frame_number);
1191             av_bprintf(&buf_script, "fps=%.1f\n", fps);
1192             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1193                        ost->file_index, ost->index, q);
1194             if (is_last_report)
1195                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1196             if (qp_hist) {
1197                 int j;
1198                 int qp = lrintf(q);
1199                 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
1200                     qp_histogram[qp]++;
1201                 for (j = 0; j < 32; j++)
1202                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log2(qp_histogram[j] + 1)));
1203             }
1204             if ((enc->flags&CODEC_FLAG_PSNR) && (enc->coded_frame || is_last_report)) {
1205                 int j;
1206                 double error, error_sum = 0;
1207                 double scale, scale_sum = 0;
1208                 double p;
1209                 char type[3] = { 'Y','U','V' };
1210                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1211                 for (j = 0; j < 3; j++) {
1212                     if (is_last_report) {
1213                         error = enc->error[j];
1214                         scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
1215                     } else {
1216                         error = enc->coded_frame->error[j];
1217                         scale = enc->width * enc->height * 255.0 * 255.0;
1218                     }
1219                     if (j)
1220                         scale /= 4;
1221                     error_sum += error;
1222                     scale_sum += scale;
1223                     p = psnr(error / scale);
1224                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], p);
1225                     av_bprintf(&buf_script, "stream_%d_%d_psnr_%c=%2.2f\n",
1226                                ost->file_index, ost->index, type[j] | 32, p);
1227                 }
1228                 p = psnr(error_sum / scale_sum);
1229                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
1230                 av_bprintf(&buf_script, "stream_%d_%d_psnr_all=%2.2f\n",
1231                            ost->file_index, ost->index, p);
1232             }
1233             vid = 1;
1234         }
1235         /* compute min output value */
1236         if ((is_last_report || !ost->finished) && ost->st->pts.val != AV_NOPTS_VALUE)
1237             pts = FFMAX(pts, av_rescale_q(ost->st->pts.val,
1238                                           ost->st->time_base, AV_TIME_BASE_Q));
1239     }
1240
1241     secs = pts / AV_TIME_BASE;
1242     us = pts % AV_TIME_BASE;
1243     mins = secs / 60;
1244     secs %= 60;
1245     hours = mins / 60;
1246     mins %= 60;
1247
1248     bitrate = pts && total_size >= 0 ? total_size * 8 / (pts / 1000.0) : -1;
1249
1250     if (total_size < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1251                                  "size=N/A time=");
1252     else                snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1253                                  "size=%8.0fkB time=", total_size / 1024.0);
1254     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1255              "%02d:%02d:%02d.%02d ", hours, mins, secs,
1256              (100 * us) / AV_TIME_BASE);
1257     if (bitrate < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1258                               "bitrate=N/A");
1259     else             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1260                               "bitrate=%6.1fkbits/s", bitrate);
1261     if (total_size < 0) av_bprintf(&buf_script, "total_size=N/A\n");
1262     else                av_bprintf(&buf_script, "total_size=%"PRId64"\n", total_size);
1263     av_bprintf(&buf_script, "out_time_ms=%"PRId64"\n", pts);
1264     av_bprintf(&buf_script, "out_time=%02d:%02d:%02d.%06d\n",
1265                hours, mins, secs, us);
1266
1267     if (nb_frames_dup || nb_frames_drop)
1268         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1269                 nb_frames_dup, nb_frames_drop);
1270     av_bprintf(&buf_script, "dup_frames=%d\n", nb_frames_dup);
1271     av_bprintf(&buf_script, "drop_frames=%d\n", nb_frames_drop);
1272
1273     if (print_stats || is_last_report) {
1274         if (print_stats==1 && AV_LOG_INFO > av_log_get_level()) {
1275             fprintf(stderr, "%s    \r", buf);
1276         } else
1277             av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
1278
1279     fflush(stderr);
1280     }
1281
1282     if (progress_avio) {
1283         av_bprintf(&buf_script, "progress=%s\n",
1284                    is_last_report ? "end" : "continue");
1285         avio_write(progress_avio, buf_script.str,
1286                    FFMIN(buf_script.len, buf_script.size - 1));
1287         avio_flush(progress_avio);
1288         av_bprint_finalize(&buf_script, NULL);
1289         if (is_last_report) {
1290             avio_close(progress_avio);
1291             progress_avio = NULL;
1292         }
1293     }
1294
1295     if (is_last_report) {
1296         int64_t raw= audio_size + video_size + subtitle_size + extra_size;
1297         av_log(NULL, AV_LOG_INFO, "\n");
1298         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB subtitle:%1.0f global headers:%1.0fkB muxing overhead %f%%\n",
1299                video_size / 1024.0,
1300                audio_size / 1024.0,
1301                subtitle_size / 1024.0,
1302                extra_size / 1024.0,
1303                100.0 * (total_size - raw) / raw
1304         );
1305         if(video_size + audio_size + subtitle_size + extra_size == 0){
1306             av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
1307         }
1308     }
1309 }
1310
1311 static void flush_encoders(void)
1312 {
1313     int i, ret;
1314
1315     for (i = 0; i < nb_output_streams; i++) {
1316         OutputStream   *ost = output_streams[i];
1317         AVCodecContext *enc = ost->st->codec;
1318         AVFormatContext *os = output_files[ost->file_index]->ctx;
1319         int stop_encoding = 0;
1320
1321         if (!ost->encoding_needed)
1322             continue;
1323
1324         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
1325             continue;
1326         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == AV_CODEC_ID_RAWVIDEO)
1327             continue;
1328
1329         for (;;) {
1330             int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
1331             const char *desc;
1332             int64_t *size;
1333
1334             switch (ost->st->codec->codec_type) {
1335             case AVMEDIA_TYPE_AUDIO:
1336                 encode = avcodec_encode_audio2;
1337                 desc   = "Audio";
1338                 size   = &audio_size;
1339                 break;
1340             case AVMEDIA_TYPE_VIDEO:
1341                 encode = avcodec_encode_video2;
1342                 desc   = "Video";
1343                 size   = &video_size;
1344                 break;
1345             default:
1346                 stop_encoding = 1;
1347             }
1348
1349             if (encode) {
1350                 AVPacket pkt;
1351                 int got_packet;
1352                 av_init_packet(&pkt);
1353                 pkt.data = NULL;
1354                 pkt.size = 0;
1355
1356                 update_benchmark(NULL);
1357                 ret = encode(enc, &pkt, NULL, &got_packet);
1358                 update_benchmark("flush %s %d.%d", desc, ost->file_index, ost->index);
1359                 if (ret < 0) {
1360                     av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
1361                     exit_program(1);
1362                 }
1363                 *size += pkt.size;
1364                 if (ost->logfile && enc->stats_out) {
1365                     fprintf(ost->logfile, "%s", enc->stats_out);
1366                 }
1367                 if (!got_packet) {
1368                     stop_encoding = 1;
1369                     break;
1370                 }
1371                 if (pkt.pts != AV_NOPTS_VALUE)
1372                     pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
1373                 if (pkt.dts != AV_NOPTS_VALUE)
1374                     pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
1375                 if (pkt.duration > 0)
1376                     pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
1377                 write_frame(os, &pkt, ost);
1378                 if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && vstats_filename) {
1379                     do_video_stats(ost, pkt.size);
1380                 }
1381             }
1382
1383             if (stop_encoding)
1384                 break;
1385         }
1386     }
1387 }
1388
1389 /*
1390  * Check whether a packet from ist should be written into ost at this time
1391  */
1392 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1393 {
1394     OutputFile *of = output_files[ost->file_index];
1395     int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
1396
1397     if (ost->source_index != ist_index)
1398         return 0;
1399
1400     if (of->start_time != AV_NOPTS_VALUE && ist->pts < of->start_time)
1401         return 0;
1402
1403     return 1;
1404 }
1405
1406 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1407 {
1408     OutputFile *of = output_files[ost->file_index];
1409     InputFile   *f = input_files [ist->file_index];
1410     int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
1411     int64_t ost_tb_start_time = av_rescale_q(start_time, AV_TIME_BASE_Q, ost->st->time_base);
1412     int64_t ist_tb_start_time = av_rescale_q(start_time, AV_TIME_BASE_Q, ist->st->time_base);
1413     AVPicture pict;
1414     AVPacket opkt;
1415
1416     av_init_packet(&opkt);
1417
1418     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1419         !ost->copy_initial_nonkeyframes)
1420         return;
1421
1422     if (pkt->pts == AV_NOPTS_VALUE) {
1423         if (!ost->frame_number && ist->pts < start_time &&
1424             !ost->copy_prior_start)
1425             return;
1426     } else {
1427         if (!ost->frame_number && pkt->pts < ist_tb_start_time &&
1428             !ost->copy_prior_start)
1429             return;
1430     }
1431
1432     if (of->recording_time != INT64_MAX &&
1433         ist->pts >= of->recording_time + start_time) {
1434         close_output_stream(ost);
1435         return;
1436     }
1437
1438     if (f->recording_time != INT64_MAX) {
1439         start_time = f->ctx->start_time;
1440         if (f->start_time != AV_NOPTS_VALUE)
1441             start_time += f->start_time;
1442         if (ist->pts >= f->recording_time + start_time) {
1443             close_output_stream(ost);
1444             return;
1445         }
1446     }
1447
1448     /* force the input stream PTS */
1449     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1450         audio_size += pkt->size;
1451     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1452         video_size += pkt->size;
1453         ost->sync_opts++;
1454     } else if (ost->st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
1455         subtitle_size += pkt->size;
1456     }
1457
1458     if (pkt->pts != AV_NOPTS_VALUE)
1459         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1460     else
1461         opkt.pts = AV_NOPTS_VALUE;
1462
1463     if (pkt->dts == AV_NOPTS_VALUE)
1464         opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
1465     else
1466         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1467     opkt.dts -= ost_tb_start_time;
1468
1469     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && pkt->dts != AV_NOPTS_VALUE) {
1470         int duration = av_get_audio_frame_duration(ist->st->codec, pkt->size);
1471         if(!duration)
1472             duration = ist->st->codec->frame_size;
1473         opkt.dts = opkt.pts = av_rescale_delta(ist->st->time_base, pkt->dts,
1474                                                (AVRational){1, ist->st->codec->sample_rate}, duration, &ist->filter_in_rescale_delta_last,
1475                                                ost->st->time_base) - ost_tb_start_time;
1476     }
1477
1478     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1479     opkt.flags    = pkt->flags;
1480
1481     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1482     if (  ost->st->codec->codec_id != AV_CODEC_ID_H264
1483        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG1VIDEO
1484        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG2VIDEO
1485        && ost->st->codec->codec_id != AV_CODEC_ID_VC1
1486        ) {
1487         if (av_parser_change(ost->parser, ost->st->codec,
1488                              &opkt.data, &opkt.size,
1489                              pkt->data, pkt->size,
1490                              pkt->flags & AV_PKT_FLAG_KEY)) {
1491             opkt.buf = av_buffer_create(opkt.data, opkt.size, av_buffer_default_free, NULL, 0);
1492             if (!opkt.buf)
1493                 exit_program(1);
1494         }
1495     } else {
1496         opkt.data = pkt->data;
1497         opkt.size = pkt->size;
1498     }
1499
1500     if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (of->ctx->oformat->flags & AVFMT_RAWPICTURE)) {
1501         /* store AVPicture in AVPacket, as expected by the output format */
1502         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1503         opkt.data = (uint8_t *)&pict;
1504         opkt.size = sizeof(AVPicture);
1505         opkt.flags |= AV_PKT_FLAG_KEY;
1506     }
1507
1508     write_frame(of->ctx, &opkt, ost);
1509     ost->st->codec->frame_number++;
1510 }
1511
1512 int guess_input_channel_layout(InputStream *ist)
1513 {
1514     AVCodecContext *dec = ist->st->codec;
1515
1516     if (!dec->channel_layout) {
1517         char layout_name[256];
1518
1519         if (dec->channels > ist->guess_layout_max)
1520             return 0;
1521         dec->channel_layout = av_get_default_channel_layout(dec->channels);
1522         if (!dec->channel_layout)
1523             return 0;
1524         av_get_channel_layout_string(layout_name, sizeof(layout_name),
1525                                      dec->channels, dec->channel_layout);
1526         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for  Input Stream "
1527                "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
1528     }
1529     return 1;
1530 }
1531
1532 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1533 {
1534     AVFrame *decoded_frame, *f;
1535     AVCodecContext *avctx = ist->st->codec;
1536     int i, ret, err = 0, resample_changed;
1537     AVRational decoded_frame_tb;
1538
1539     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1540         return AVERROR(ENOMEM);
1541     if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1542         return AVERROR(ENOMEM);
1543     decoded_frame = ist->decoded_frame;
1544
1545     update_benchmark(NULL);
1546     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1547     update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
1548
1549     if (ret >= 0 && avctx->sample_rate <= 0) {
1550         av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
1551         ret = AVERROR_INVALIDDATA;
1552     }
1553
1554     if (*got_output || ret<0 || pkt->size)
1555         decode_error_stat[ret<0] ++;
1556
1557     if (!*got_output || ret < 0) {
1558         if (!pkt->size) {
1559             for (i = 0; i < ist->nb_filters; i++)
1560 #if 1
1561                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1562 #else
1563                 av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
1564 #endif
1565         }
1566         return ret;
1567     }
1568
1569 #if 1
1570     /* increment next_dts to use for the case where the input stream does not
1571        have timestamps or there are multiple frames in the packet */
1572     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1573                      avctx->sample_rate;
1574     ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1575                      avctx->sample_rate;
1576 #endif
1577
1578     resample_changed = ist->resample_sample_fmt     != decoded_frame->format         ||
1579                        ist->resample_channels       != avctx->channels               ||
1580                        ist->resample_channel_layout != decoded_frame->channel_layout ||
1581                        ist->resample_sample_rate    != decoded_frame->sample_rate;
1582     if (resample_changed) {
1583         char layout1[64], layout2[64];
1584
1585         if (!guess_input_channel_layout(ist)) {
1586             av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
1587                    "layout for Input Stream #%d.%d\n", ist->file_index,
1588                    ist->st->index);
1589             exit_program(1);
1590         }
1591         decoded_frame->channel_layout = avctx->channel_layout;
1592
1593         av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
1594                                      ist->resample_channel_layout);
1595         av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
1596                                      decoded_frame->channel_layout);
1597
1598         av_log(NULL, AV_LOG_INFO,
1599                "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",
1600                ist->file_index, ist->st->index,
1601                ist->resample_sample_rate,  av_get_sample_fmt_name(ist->resample_sample_fmt),
1602                ist->resample_channels, layout1,
1603                decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
1604                avctx->channels, layout2);
1605
1606         ist->resample_sample_fmt     = decoded_frame->format;
1607         ist->resample_sample_rate    = decoded_frame->sample_rate;
1608         ist->resample_channel_layout = decoded_frame->channel_layout;
1609         ist->resample_channels       = avctx->channels;
1610
1611         for (i = 0; i < nb_filtergraphs; i++)
1612             if (ist_in_filtergraph(filtergraphs[i], ist)) {
1613                 FilterGraph *fg = filtergraphs[i];
1614                 int j;
1615                 if (configure_filtergraph(fg) < 0) {
1616                     av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1617                     exit_program(1);
1618                 }
1619                 for (j = 0; j < fg->nb_outputs; j++) {
1620                     OutputStream *ost = fg->outputs[j]->ost;
1621                     if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
1622                         !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
1623                         av_buffersink_set_frame_size(ost->filter->filter,
1624                                                      ost->st->codec->frame_size);
1625                 }
1626             }
1627     }
1628
1629     /* if the decoder provides a pts, use it instead of the last packet pts.
1630        the decoder could be delaying output by a packet or more. */
1631     if (decoded_frame->pts != AV_NOPTS_VALUE) {
1632         ist->dts = ist->next_dts = ist->pts = ist->next_pts = av_rescale_q(decoded_frame->pts, avctx->time_base, AV_TIME_BASE_Q);
1633         decoded_frame_tb   = avctx->time_base;
1634     } else if (decoded_frame->pkt_pts != AV_NOPTS_VALUE) {
1635         decoded_frame->pts = decoded_frame->pkt_pts;
1636         pkt->pts           = AV_NOPTS_VALUE;
1637         decoded_frame_tb   = ist->st->time_base;
1638     } else if (pkt->pts != AV_NOPTS_VALUE) {
1639         decoded_frame->pts = pkt->pts;
1640         pkt->pts           = AV_NOPTS_VALUE;
1641         decoded_frame_tb   = ist->st->time_base;
1642     }else {
1643         decoded_frame->pts = ist->dts;
1644         decoded_frame_tb   = AV_TIME_BASE_Q;
1645     }
1646     if (decoded_frame->pts != AV_NOPTS_VALUE)
1647         decoded_frame->pts = av_rescale_delta(decoded_frame_tb, decoded_frame->pts,
1648                                               (AVRational){1, ist->st->codec->sample_rate}, decoded_frame->nb_samples, &ist->filter_in_rescale_delta_last,
1649                                               (AVRational){1, ist->st->codec->sample_rate});
1650     for (i = 0; i < ist->nb_filters; i++) {
1651         if (i < ist->nb_filters - 1) {
1652             f = ist->filter_frame;
1653             err = av_frame_ref(f, decoded_frame);
1654             if (err < 0)
1655                 break;
1656         } else
1657             f = decoded_frame;
1658         err = av_buffersrc_add_frame_flags(ist->filters[i]->filter, f,
1659                                      AV_BUFFERSRC_FLAG_PUSH);
1660         if (err == AVERROR_EOF)
1661             err = 0; /* ignore */
1662         if (err < 0)
1663             break;
1664     }
1665     decoded_frame->pts = AV_NOPTS_VALUE;
1666
1667     av_frame_unref(ist->filter_frame);
1668     av_frame_unref(decoded_frame);
1669     return err < 0 ? err : ret;
1670 }
1671
1672 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
1673 {
1674     AVFrame *decoded_frame, *f;
1675     int i, ret = 0, err = 0, resample_changed;
1676     int64_t best_effort_timestamp;
1677     AVRational *frame_sample_aspect;
1678
1679     if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
1680         return AVERROR(ENOMEM);
1681     if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1682         return AVERROR(ENOMEM);
1683     decoded_frame = ist->decoded_frame;
1684     pkt->dts  = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
1685
1686     update_benchmark(NULL);
1687     ret = avcodec_decode_video2(ist->st->codec,
1688                                 decoded_frame, got_output, pkt);
1689     update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
1690
1691     if (*got_output || ret<0 || pkt->size)
1692         decode_error_stat[ret<0] ++;
1693
1694     if (!*got_output || ret < 0) {
1695         if (!pkt->size) {
1696             for (i = 0; i < ist->nb_filters; i++)
1697 #if 1
1698                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1699 #else
1700                 av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
1701 #endif
1702         }
1703         return ret;
1704     }
1705
1706     if(ist->top_field_first>=0)
1707         decoded_frame->top_field_first = ist->top_field_first;
1708
1709     best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
1710     if(best_effort_timestamp != AV_NOPTS_VALUE)
1711         ist->next_pts = ist->pts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);
1712
1713     if (debug_ts) {
1714         av_log(NULL, AV_LOG_INFO, "decoder -> ist_index:%d type:video "
1715                 "frame_pts:%s frame_pts_time:%s best_effort_ts:%"PRId64" best_effort_ts_time:%s keyframe:%d frame_type:%d \n",
1716                 ist->st->index, av_ts2str(decoded_frame->pts),
1717                 av_ts2timestr(decoded_frame->pts, &ist->st->time_base),
1718                 best_effort_timestamp,
1719                 av_ts2timestr(best_effort_timestamp, &ist->st->time_base),
1720                 decoded_frame->key_frame, decoded_frame->pict_type);
1721     }
1722
1723     pkt->size = 0;
1724
1725     if (ist->st->sample_aspect_ratio.num)
1726         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1727
1728     resample_changed = ist->resample_width   != decoded_frame->width  ||
1729                        ist->resample_height  != decoded_frame->height ||
1730                        ist->resample_pix_fmt != decoded_frame->format;
1731     if (resample_changed) {
1732         av_log(NULL, AV_LOG_INFO,
1733                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1734                ist->file_index, ist->st->index,
1735                ist->resample_width,  ist->resample_height,  av_get_pix_fmt_name(ist->resample_pix_fmt),
1736                decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
1737
1738         ist->resample_width   = decoded_frame->width;
1739         ist->resample_height  = decoded_frame->height;
1740         ist->resample_pix_fmt = decoded_frame->format;
1741
1742         for (i = 0; i < nb_filtergraphs; i++) {
1743             if (ist_in_filtergraph(filtergraphs[i], ist) && ist->reinit_filters &&
1744                 configure_filtergraph(filtergraphs[i]) < 0) {
1745                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1746                 exit_program(1);
1747             }
1748         }
1749     }
1750
1751     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
1752     for (i = 0; i < ist->nb_filters; i++) {
1753         if (!frame_sample_aspect->num)
1754             *frame_sample_aspect = ist->st->sample_aspect_ratio;
1755
1756         if (i < ist->nb_filters - 1) {
1757             f = ist->filter_frame;
1758             err = av_frame_ref(f, decoded_frame);
1759             if (err < 0)
1760                 break;
1761         } else
1762             f = decoded_frame;
1763         ret = av_buffersrc_add_frame_flags(ist->filters[i]->filter, f, AV_BUFFERSRC_FLAG_PUSH);
1764         if (ret == AVERROR_EOF) {
1765             ret = 0; /* ignore */
1766         } else if (ret < 0) {
1767             av_log(NULL, AV_LOG_FATAL,
1768                    "Failed to inject frame into filter network: %s\n", av_err2str(ret));
1769             exit_program(1);
1770         }
1771     }
1772
1773     av_frame_unref(ist->filter_frame);
1774     av_frame_unref(decoded_frame);
1775     return err < 0 ? err : ret;
1776 }
1777
1778 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1779 {
1780     AVSubtitle subtitle;
1781     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
1782                                           &subtitle, got_output, pkt);
1783
1784     if (*got_output || ret<0 || pkt->size)
1785         decode_error_stat[ret<0] ++;
1786
1787     if (ret < 0 || !*got_output) {
1788         if (!pkt->size)
1789             sub2video_flush(ist);
1790         return ret;
1791     }
1792
1793     if (ist->fix_sub_duration) {
1794         if (ist->prev_sub.got_output) {
1795             int end = av_rescale(subtitle.pts - ist->prev_sub.subtitle.pts,
1796                                  1000, AV_TIME_BASE);
1797             if (end < ist->prev_sub.subtitle.end_display_time) {
1798                 av_log(ist->st->codec, AV_LOG_DEBUG,
1799                        "Subtitle duration reduced from %d to %d\n",
1800                        ist->prev_sub.subtitle.end_display_time, end);
1801                 ist->prev_sub.subtitle.end_display_time = end;
1802             }
1803         }
1804         FFSWAP(int,        *got_output, ist->prev_sub.got_output);
1805         FFSWAP(int,        ret,         ist->prev_sub.ret);
1806         FFSWAP(AVSubtitle, subtitle,    ist->prev_sub.subtitle);
1807     }
1808
1809     sub2video_update(ist, &subtitle);
1810
1811     if (!*got_output || !subtitle.num_rects)
1812         return ret;
1813
1814     for (i = 0; i < nb_output_streams; i++) {
1815         OutputStream *ost = output_streams[i];
1816
1817         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1818             continue;
1819
1820         do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle);
1821     }
1822
1823     avsubtitle_free(&subtitle);
1824     return ret;
1825 }
1826
1827 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1828 static int output_packet(InputStream *ist, const AVPacket *pkt)
1829 {
1830     int ret = 0, i;
1831     int got_output = 0;
1832
1833     AVPacket avpkt;
1834     if (!ist->saw_first_ts) {
1835         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;
1836         ist->pts = 0;
1837         if (pkt != NULL && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
1838             ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1839             ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
1840         }
1841         ist->saw_first_ts = 1;
1842     }
1843
1844     if (ist->next_dts == AV_NOPTS_VALUE)
1845         ist->next_dts = ist->dts;
1846     if (ist->next_pts == AV_NOPTS_VALUE)
1847         ist->next_pts = ist->pts;
1848
1849     if (pkt == NULL) {
1850         /* EOF handling */
1851         av_init_packet(&avpkt);
1852         avpkt.data = NULL;
1853         avpkt.size = 0;
1854         goto handle_eof;
1855     } else {
1856         avpkt = *pkt;
1857     }
1858
1859     if (pkt->dts != AV_NOPTS_VALUE) {
1860         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1861         if (ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
1862             ist->next_pts = ist->pts = ist->dts;
1863     }
1864
1865     // while we have more to decode or while the decoder did output something on EOF
1866     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
1867         int duration;
1868     handle_eof:
1869
1870         ist->pts = ist->next_pts;
1871         ist->dts = ist->next_dts;
1872
1873         if (avpkt.size && avpkt.size != pkt->size) {
1874             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
1875                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1876             ist->showed_multi_packet_warning = 1;
1877         }
1878
1879         switch (ist->st->codec->codec_type) {
1880         case AVMEDIA_TYPE_AUDIO:
1881             ret = decode_audio    (ist, &avpkt, &got_output);
1882             break;
1883         case AVMEDIA_TYPE_VIDEO:
1884             ret = decode_video    (ist, &avpkt, &got_output);
1885             if (avpkt.duration) {
1886                 duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
1887             } else if(ist->st->codec->time_base.num != 0 && ist->st->codec->time_base.den != 0) {
1888                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1889                 duration = ((int64_t)AV_TIME_BASE *
1890                                 ist->st->codec->time_base.num * ticks) /
1891                                 ist->st->codec->time_base.den;
1892             } else
1893                 duration = 0;
1894
1895             if(ist->dts != AV_NOPTS_VALUE && duration) {
1896                 ist->next_dts += duration;
1897             }else
1898                 ist->next_dts = AV_NOPTS_VALUE;
1899
1900             if (got_output)
1901                 ist->next_pts += duration; //FIXME the duration is not correct in some cases
1902             break;
1903         case AVMEDIA_TYPE_SUBTITLE:
1904             ret = transcode_subtitles(ist, &avpkt, &got_output);
1905             break;
1906         default:
1907             return -1;
1908         }
1909
1910         if (ret < 0)
1911             return ret;
1912
1913         avpkt.dts=
1914         avpkt.pts= AV_NOPTS_VALUE;
1915
1916         // touch data and size only if not EOF
1917         if (pkt) {
1918             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
1919                 ret = avpkt.size;
1920             avpkt.data += ret;
1921             avpkt.size -= ret;
1922         }
1923         if (!got_output) {
1924             continue;
1925         }
1926     }
1927
1928     /* handle stream copy */
1929     if (!ist->decoding_needed) {
1930         ist->dts = ist->next_dts;
1931         switch (ist->st->codec->codec_type) {
1932         case AVMEDIA_TYPE_AUDIO:
1933             ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1934                              ist->st->codec->sample_rate;
1935             break;
1936         case AVMEDIA_TYPE_VIDEO:
1937             if (ist->framerate.num) {
1938                 // TODO: Remove work-around for c99-to-c89 issue 7
1939                 AVRational time_base_q = AV_TIME_BASE_Q;
1940                 int64_t next_dts = av_rescale_q(ist->next_dts, time_base_q, av_inv_q(ist->framerate));
1941                 ist->next_dts = av_rescale_q(next_dts + 1, av_inv_q(ist->framerate), time_base_q);
1942             } else if (pkt->duration) {
1943                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
1944             } else if(ist->st->codec->time_base.num != 0) {
1945                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
1946                 ist->next_dts += ((int64_t)AV_TIME_BASE *
1947                                   ist->st->codec->time_base.num * ticks) /
1948                                   ist->st->codec->time_base.den;
1949             }
1950             break;
1951         }
1952         ist->pts = ist->dts;
1953         ist->next_pts = ist->next_dts;
1954     }
1955     for (i = 0; pkt && i < nb_output_streams; i++) {
1956         OutputStream *ost = output_streams[i];
1957
1958         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
1959             continue;
1960
1961         do_streamcopy(ist, ost, pkt);
1962     }
1963
1964     return 0;
1965 }
1966
1967 static void print_sdp(void)
1968 {
1969     char sdp[16384];
1970     int i;
1971     AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
1972
1973     if (!avc)
1974         exit_program(1);
1975     for (i = 0; i < nb_output_files; i++)
1976         avc[i] = output_files[i]->ctx;
1977
1978     av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
1979     printf("SDP:\n%s\n", sdp);
1980     fflush(stdout);
1981     av_freep(&avc);
1982 }
1983
1984 static int init_input_stream(int ist_index, char *error, int error_len)
1985 {
1986     int ret;
1987     InputStream *ist = input_streams[ist_index];
1988
1989     if (ist->decoding_needed) {
1990         AVCodec *codec = ist->dec;
1991         if (!codec) {
1992             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
1993                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
1994             return AVERROR(EINVAL);
1995         }
1996
1997         av_opt_set_int(ist->st->codec, "refcounted_frames", 1, 0);
1998
1999         if (!av_dict_get(ist->opts, "threads", NULL, 0))
2000             av_dict_set(&ist->opts, "threads", "auto", 0);
2001         if ((ret = avcodec_open2(ist->st->codec, codec, &ist->opts)) < 0) {
2002             char errbuf[128];
2003             if (ret == AVERROR_EXPERIMENTAL)
2004                 abort_codec_experimental(codec, 0);
2005
2006             av_strerror(ret, errbuf, sizeof(errbuf));
2007
2008             snprintf(error, error_len,
2009                      "Error while opening decoder for input stream "
2010                      "#%d:%d : %s",
2011                      ist->file_index, ist->st->index, errbuf);
2012             return ret;
2013         }
2014         assert_avoptions(ist->opts);
2015     }
2016
2017     ist->next_pts = AV_NOPTS_VALUE;
2018     ist->next_dts = AV_NOPTS_VALUE;
2019     ist->is_start = 1;
2020
2021     return 0;
2022 }
2023
2024 static InputStream *get_input_stream(OutputStream *ost)
2025 {
2026     if (ost->source_index >= 0)
2027         return input_streams[ost->source_index];
2028     return NULL;
2029 }
2030
2031 static int compare_int64(const void *a, const void *b)
2032 {
2033     int64_t va = *(int64_t *)a, vb = *(int64_t *)b;
2034     return va < vb ? -1 : va > vb ? +1 : 0;
2035 }
2036
2037 static void parse_forced_key_frames(char *kf, OutputStream *ost,
2038                                     AVCodecContext *avctx)
2039 {
2040     char *p;
2041     int n = 1, i, size, index = 0;
2042     int64_t t, *pts;
2043
2044     for (p = kf; *p; p++)
2045         if (*p == ',')
2046             n++;
2047     size = n;
2048     pts = av_malloc(sizeof(*pts) * size);
2049     if (!pts) {
2050         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
2051         exit_program(1);
2052     }
2053
2054     p = kf;
2055     for (i = 0; i < n; i++) {
2056         char *next = strchr(p, ',');
2057
2058         if (next)
2059             *next++ = 0;
2060
2061         if (!memcmp(p, "chapters", 8)) {
2062
2063             AVFormatContext *avf = output_files[ost->file_index]->ctx;
2064             int j;
2065
2066             if (avf->nb_chapters > INT_MAX - size ||
2067                 !(pts = av_realloc_f(pts, size += avf->nb_chapters - 1,
2068                                      sizeof(*pts)))) {
2069                 av_log(NULL, AV_LOG_FATAL,
2070                        "Could not allocate forced key frames array.\n");
2071                 exit_program(1);
2072             }
2073             t = p[8] ? parse_time_or_die("force_key_frames", p + 8, 1) : 0;
2074             t = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
2075
2076             for (j = 0; j < avf->nb_chapters; j++) {
2077                 AVChapter *c = avf->chapters[j];
2078                 av_assert1(index < size);
2079                 pts[index++] = av_rescale_q(c->start, c->time_base,
2080                                             avctx->time_base) + t;
2081             }
2082
2083         } else {
2084
2085             t = parse_time_or_die("force_key_frames", p, 1);
2086             av_assert1(index < size);
2087             pts[index++] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
2088
2089         }
2090
2091         p = next;
2092     }
2093
2094     av_assert0(index == size);
2095     qsort(pts, size, sizeof(*pts), compare_int64);
2096     ost->forced_kf_count = size;
2097     ost->forced_kf_pts   = pts;
2098 }
2099
2100 static void report_new_stream(int input_index, AVPacket *pkt)
2101 {
2102     InputFile *file = input_files[input_index];
2103     AVStream *st = file->ctx->streams[pkt->stream_index];
2104
2105     if (pkt->stream_index < file->nb_streams_warn)
2106         return;
2107     av_log(file->ctx, AV_LOG_WARNING,
2108            "New %s stream %d:%d at pos:%"PRId64" and DTS:%ss\n",
2109            av_get_media_type_string(st->codec->codec_type),
2110            input_index, pkt->stream_index,
2111            pkt->pos, av_ts2timestr(pkt->dts, &st->time_base));
2112     file->nb_streams_warn = pkt->stream_index + 1;
2113 }
2114
2115 static int transcode_init(void)
2116 {
2117     int ret = 0, i, j, k;
2118     AVFormatContext *oc;
2119     AVCodecContext *codec;
2120     OutputStream *ost;
2121     InputStream *ist;
2122     char error[1024];
2123     int want_sdp = 1;
2124
2125     for (i = 0; i < nb_filtergraphs; i++) {
2126         FilterGraph *fg = filtergraphs[i];
2127         for (j = 0; j < fg->nb_outputs; j++) {
2128             OutputFilter *ofilter = fg->outputs[j];
2129             if (!ofilter->ost || ofilter->ost->source_index >= 0)
2130                 continue;
2131             if (fg->nb_inputs != 1)
2132                 continue;
2133             for (k = nb_input_streams-1; k >= 0 ; k--)
2134                 if (fg->inputs[0]->ist == input_streams[k])
2135                     break;
2136             ofilter->ost->source_index = k;
2137         }
2138     }
2139
2140     /* init framerate emulation */
2141     for (i = 0; i < nb_input_files; i++) {
2142         InputFile *ifile = input_files[i];
2143         if (ifile->rate_emu)
2144             for (j = 0; j < ifile->nb_streams; j++)
2145                 input_streams[j + ifile->ist_index]->start = av_gettime();
2146     }
2147
2148     /* output stream init */
2149     for (i = 0; i < nb_output_files; i++) {
2150         oc = output_files[i]->ctx;
2151         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2152             av_dump_format(oc, i, oc->filename, 1);
2153             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2154             return AVERROR(EINVAL);
2155         }
2156     }
2157
2158     /* init complex filtergraphs */
2159     for (i = 0; i < nb_filtergraphs; i++)
2160         if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
2161             return ret;
2162
2163     /* for each output stream, we compute the right encoding parameters */
2164     for (i = 0; i < nb_output_streams; i++) {
2165         AVCodecContext *icodec = NULL;
2166         ost = output_streams[i];
2167         oc  = output_files[ost->file_index]->ctx;
2168         ist = get_input_stream(ost);
2169
2170         if (ost->attachment_filename)
2171             continue;
2172
2173         codec  = ost->st->codec;
2174
2175         if (ist) {
2176             icodec = ist->st->codec;
2177
2178             ost->st->disposition          = ist->st->disposition;
2179             codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
2180             codec->chroma_sample_location = icodec->chroma_sample_location;
2181         } else {
2182             for (j=0; j<oc->nb_streams; j++) {
2183                 AVStream *st = oc->streams[j];
2184                 if (st != ost->st && st->codec->codec_type == codec->codec_type)
2185                     break;
2186             }
2187             if (j == oc->nb_streams)
2188                 if (codec->codec_type == AVMEDIA_TYPE_AUDIO || codec->codec_type == AVMEDIA_TYPE_VIDEO)
2189                     ost->st->disposition = AV_DISPOSITION_DEFAULT;
2190         }
2191
2192         if (ost->stream_copy) {
2193             AVRational sar;
2194             uint64_t extra_size;
2195
2196             av_assert0(ist && !ost->filter);
2197
2198             extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2199
2200             if (extra_size > INT_MAX) {
2201                 return AVERROR(EINVAL);
2202             }
2203
2204             /* if stream_copy is selected, no need to decode or encode */
2205             codec->codec_id   = icodec->codec_id;
2206             codec->codec_type = icodec->codec_type;
2207
2208             if (!codec->codec_tag) {
2209                 unsigned int codec_tag;
2210                 if (!oc->oformat->codec_tag ||
2211                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2212                      !av_codec_get_tag2(oc->oformat->codec_tag, icodec->codec_id, &codec_tag))
2213                     codec->codec_tag = icodec->codec_tag;
2214             }
2215
2216             codec->bit_rate       = icodec->bit_rate;
2217             codec->rc_max_rate    = icodec->rc_max_rate;
2218             codec->rc_buffer_size = icodec->rc_buffer_size;
2219             codec->field_order    = icodec->field_order;
2220             codec->extradata      = av_mallocz(extra_size);
2221             if (!codec->extradata) {
2222                 return AVERROR(ENOMEM);
2223             }
2224             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2225             codec->extradata_size= icodec->extradata_size;
2226             codec->bits_per_coded_sample  = icodec->bits_per_coded_sample;
2227
2228             codec->time_base = ist->st->time_base;
2229             /*
2230              * Avi is a special case here because it supports variable fps but
2231              * having the fps and timebase differe significantly adds quite some
2232              * overhead
2233              */
2234             if(!strcmp(oc->oformat->name, "avi")) {
2235                 if ( copy_tb<0 && av_q2d(ist->st->r_frame_rate) >= av_q2d(ist->st->avg_frame_rate)
2236                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(ist->st->time_base)
2237                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(icodec->time_base)
2238                                && av_q2d(ist->st->time_base) < 1.0/500 && av_q2d(icodec->time_base) < 1.0/500
2239                      || copy_tb==2){
2240                     codec->time_base.num = ist->st->r_frame_rate.den;
2241                     codec->time_base.den = 2*ist->st->r_frame_rate.num;
2242                     codec->ticks_per_frame = 2;
2243                 } else if (   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2244                                  && av_q2d(ist->st->time_base) < 1.0/500
2245                     || copy_tb==0){
2246                     codec->time_base = icodec->time_base;
2247                     codec->time_base.num *= icodec->ticks_per_frame;
2248                     codec->time_base.den *= 2;
2249                     codec->ticks_per_frame = 2;
2250                 }
2251             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2252                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2253                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2254                       && strcmp(oc->oformat->name, "f4v")
2255             ) {
2256                 if(   copy_tb<0 && icodec->time_base.den
2257                                 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
2258                                 && av_q2d(ist->st->time_base) < 1.0/500
2259                    || copy_tb==0){
2260                     codec->time_base = icodec->time_base;
2261                     codec->time_base.num *= icodec->ticks_per_frame;
2262                 }
2263             }
2264             if (   codec->codec_tag == AV_RL32("tmcd")
2265                 && icodec->time_base.num < icodec->time_base.den
2266                 && icodec->time_base.num > 0
2267                 && 121LL*icodec->time_base.num > icodec->time_base.den) {
2268                 codec->time_base = icodec->time_base;
2269             }
2270
2271             if (ist && !ost->frame_rate.num)
2272                 ost->frame_rate = ist->framerate;
2273             if(ost->frame_rate.num)
2274                 codec->time_base = av_inv_q(ost->frame_rate);
2275
2276             av_reduce(&codec->time_base.num, &codec->time_base.den,
2277                         codec->time_base.num, codec->time_base.den, INT_MAX);
2278
2279             ost->parser = av_parser_init(codec->codec_id);
2280
2281             switch (codec->codec_type) {
2282             case AVMEDIA_TYPE_AUDIO:
2283                 if (audio_volume != 256) {
2284                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2285                     exit_program(1);
2286                 }
2287                 codec->channel_layout     = icodec->channel_layout;
2288                 codec->sample_rate        = icodec->sample_rate;
2289                 codec->channels           = icodec->channels;
2290                 codec->frame_size         = icodec->frame_size;
2291                 codec->audio_service_type = icodec->audio_service_type;
2292                 codec->block_align        = icodec->block_align;
2293                 if((codec->block_align == 1 || codec->block_align == 1152 || codec->block_align == 576) && codec->codec_id == AV_CODEC_ID_MP3)
2294                     codec->block_align= 0;
2295                 if(codec->codec_id == AV_CODEC_ID_AC3)
2296                     codec->block_align= 0;
2297                 break;
2298             case AVMEDIA_TYPE_VIDEO:
2299                 codec->pix_fmt            = icodec->pix_fmt;
2300                 codec->width              = icodec->width;
2301                 codec->height             = icodec->height;
2302                 codec->has_b_frames       = icodec->has_b_frames;
2303                 if (ost->frame_aspect_ratio.num) { // overridden by the -aspect cli option
2304                     sar =
2305                         av_mul_q(ost->frame_aspect_ratio,
2306                                  (AVRational){ codec->height, codec->width });
2307                     av_log(NULL, AV_LOG_WARNING, "Overriding aspect ratio "
2308                            "with stream copy may produce invalid files\n");
2309                 }
2310                 else if (ist->st->sample_aspect_ratio.num)
2311                     sar = ist->st->sample_aspect_ratio;
2312                 else
2313                     sar = icodec->sample_aspect_ratio;
2314                 ost->st->sample_aspect_ratio = codec->sample_aspect_ratio = sar;
2315                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2316                 break;
2317             case AVMEDIA_TYPE_SUBTITLE:
2318                 codec->width  = icodec->width;
2319                 codec->height = icodec->height;
2320                 break;
2321             case AVMEDIA_TYPE_DATA:
2322             case AVMEDIA_TYPE_ATTACHMENT:
2323                 break;
2324             default:
2325                 abort();
2326             }
2327         } else {
2328             if (!ost->enc)
2329                 ost->enc = avcodec_find_encoder(codec->codec_id);
2330             if (!ost->enc) {
2331                 /* should only happen when a default codec is not present. */
2332                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
2333                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2334                 ret = AVERROR(EINVAL);
2335                 goto dump_format;
2336             }
2337
2338             if (ist)
2339                 ist->decoding_needed++;
2340             ost->encoding_needed = 1;
2341
2342             if (!ost->filter &&
2343                 (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2344                  codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
2345                     FilterGraph *fg;
2346                     fg = init_simple_filtergraph(ist, ost);
2347                     if (configure_filtergraph(fg)) {
2348                         av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2349                         exit_program(1);
2350                     }
2351             }
2352
2353             if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2354                 if (ost->filter && !ost->frame_rate.num)
2355                     ost->frame_rate = av_buffersink_get_frame_rate(ost->filter->filter);
2356                 if (ist && !ost->frame_rate.num)
2357                     ost->frame_rate = ist->framerate;
2358                 if (ist && !ost->frame_rate.num)
2359                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25, 1};
2360 //                    ost->frame_rate = ist->st->avg_frame_rate.num ? ist->st->avg_frame_rate : (AVRational){25, 1};
2361                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2362                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2363                     ost->frame_rate = ost->enc->supported_framerates[idx];
2364                 }
2365             }
2366
2367             switch (codec->codec_type) {
2368             case AVMEDIA_TYPE_AUDIO:
2369                 codec->sample_fmt     = ost->filter->filter->inputs[0]->format;
2370                 codec->sample_rate    = ost->filter->filter->inputs[0]->sample_rate;
2371                 codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
2372                 codec->channels       = avfilter_link_get_channels(ost->filter->filter->inputs[0]);
2373                 codec->time_base      = (AVRational){ 1, codec->sample_rate };
2374                 break;
2375             case AVMEDIA_TYPE_VIDEO:
2376                 codec->time_base = av_inv_q(ost->frame_rate);
2377                 if (ost->filter && !(codec->time_base.num && codec->time_base.den))
2378                     codec->time_base = ost->filter->filter->inputs[0]->time_base;
2379                 if (   av_q2d(codec->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
2380                    && (video_sync_method == VSYNC_CFR || video_sync_method == VSYNC_VSCFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
2381                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
2382                                                "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
2383                 }
2384                 for (j = 0; j < ost->forced_kf_count; j++)
2385                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2386                                                          AV_TIME_BASE_Q,
2387                                                          codec->time_base);
2388
2389                 codec->width  = ost->filter->filter->inputs[0]->w;
2390                 codec->height = ost->filter->filter->inputs[0]->h;
2391                 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
2392                     ost->frame_aspect_ratio.num ? // overridden by the -aspect cli option
2393                     av_mul_q(ost->frame_aspect_ratio, (AVRational){ codec->height, codec->width }) :
2394                     ost->filter->filter->inputs[0]->sample_aspect_ratio;
2395                 if (!strncmp(ost->enc->name, "libx264", 7) &&
2396                     codec->pix_fmt == AV_PIX_FMT_NONE &&
2397                     ost->filter->filter->inputs[0]->format != AV_PIX_FMT_YUV420P)
2398                     av_log(NULL, AV_LOG_WARNING,
2399                            "No pixel format specified, %s for H.264 encoding chosen.\n"
2400                            "Use -pix_fmt yuv420p for compatibility with outdated media players.\n",
2401                            av_get_pix_fmt_name(ost->filter->filter->inputs[0]->format));
2402                 if (!strncmp(ost->enc->name, "mpeg2video", 10) &&
2403                     codec->pix_fmt == AV_PIX_FMT_NONE &&
2404                     ost->filter->filter->inputs[0]->format != AV_PIX_FMT_YUV420P)
2405                     av_log(NULL, AV_LOG_WARNING,
2406                            "No pixel format specified, %s for MPEG-2 encoding chosen.\n"
2407                            "Use -pix_fmt yuv420p for compatibility with outdated media players.\n",
2408                            av_get_pix_fmt_name(ost->filter->filter->inputs[0]->format));
2409                 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
2410
2411                 if (!icodec ||
2412                     codec->width   != icodec->width  ||
2413                     codec->height  != icodec->height ||
2414                     codec->pix_fmt != icodec->pix_fmt) {
2415                     codec->bits_per_raw_sample = frame_bits_per_raw_sample;
2416                 }
2417
2418                 if (ost->forced_keyframes) {
2419                     if (!strncmp(ost->forced_keyframes, "expr:", 5)) {
2420                         ret = av_expr_parse(&ost->forced_keyframes_pexpr, ost->forced_keyframes+5,
2421                                             forced_keyframes_const_names, NULL, NULL, NULL, NULL, 0, NULL);
2422                         if (ret < 0) {
2423                             av_log(NULL, AV_LOG_ERROR,
2424                                    "Invalid force_key_frames expression '%s'\n", ost->forced_keyframes+5);
2425                             return ret;
2426                         }
2427                         ost->forced_keyframes_expr_const_values[FKF_N] = 0;
2428                         ost->forced_keyframes_expr_const_values[FKF_N_FORCED] = 0;
2429                         ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] = NAN;
2430                         ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] = NAN;
2431                     } else {
2432                         parse_forced_key_frames(ost->forced_keyframes, ost, ost->st->codec);
2433                     }
2434                 }
2435                 break;
2436             case AVMEDIA_TYPE_SUBTITLE:
2437                 codec->time_base = (AVRational){1, 1000};
2438                 if (!codec->width) {
2439                     codec->width     = input_streams[ost->source_index]->st->codec->width;
2440                     codec->height    = input_streams[ost->source_index]->st->codec->height;
2441                 }
2442                 break;
2443             default:
2444                 abort();
2445                 break;
2446             }
2447             /* two pass mode */
2448             if (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
2449                 char logfilename[1024];
2450                 FILE *f;
2451
2452                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2453                          ost->logfile_prefix ? ost->logfile_prefix :
2454                                                DEFAULT_PASS_LOGFILENAME_PREFIX,
2455                          i);
2456                 if (!strcmp(ost->enc->name, "libx264")) {
2457                     av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
2458                 } else {
2459                     if (codec->flags & CODEC_FLAG_PASS2) {
2460                         char  *logbuffer;
2461                         size_t logbuffer_size;
2462                         if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2463                             av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2464                                    logfilename);
2465                             exit_program(1);
2466                         }
2467                         codec->stats_in = logbuffer;
2468                     }
2469                     if (codec->flags & CODEC_FLAG_PASS1) {
2470                         f = fopen(logfilename, "wb");
2471                         if (!f) {
2472                             av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2473                                 logfilename, strerror(errno));
2474                             exit_program(1);
2475                         }
2476                         ost->logfile = f;
2477                     }
2478                 }
2479             }
2480         }
2481     }
2482
2483     /* open each encoder */
2484     for (i = 0; i < nb_output_streams; i++) {
2485         ost = output_streams[i];
2486         if (ost->encoding_needed) {
2487             AVCodec      *codec = ost->enc;
2488             AVCodecContext *dec = NULL;
2489
2490             if ((ist = get_input_stream(ost)))
2491                 dec = ist->st->codec;
2492             if (dec && dec->subtitle_header) {
2493                 /* ASS code assumes this buffer is null terminated so add extra byte. */
2494                 ost->st->codec->subtitle_header = av_mallocz(dec->subtitle_header_size + 1);
2495                 if (!ost->st->codec->subtitle_header) {
2496                     ret = AVERROR(ENOMEM);
2497                     goto dump_format;
2498                 }
2499                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2500                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2501             }
2502             if (!av_dict_get(ost->opts, "threads", NULL, 0))
2503                 av_dict_set(&ost->opts, "threads", "auto", 0);
2504             if ((ret = avcodec_open2(ost->st->codec, codec, &ost->opts)) < 0) {
2505                 if (ret == AVERROR_EXPERIMENTAL)
2506                     abort_codec_experimental(codec, 1);
2507                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2508                         ost->file_index, ost->index);
2509                 goto dump_format;
2510             }
2511             if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
2512                 !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
2513                 av_buffersink_set_frame_size(ost->filter->filter,
2514                                              ost->st->codec->frame_size);
2515             assert_avoptions(ost->opts);
2516             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2517                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2518                                              " It takes bits/s as argument, not kbits/s\n");
2519             extra_size += ost->st->codec->extradata_size;
2520         } else {
2521             av_opt_set_dict(ost->st->codec, &ost->opts);
2522         }
2523     }
2524
2525     /* init input streams */
2526     for (i = 0; i < nb_input_streams; i++)
2527         if ((ret = init_input_stream(i, error, sizeof(error))) < 0) {
2528             for (i = 0; i < nb_output_streams; i++) {
2529                 ost = output_streams[i];
2530                 avcodec_close(ost->st->codec);
2531             }
2532             goto dump_format;
2533         }
2534
2535     /* discard unused programs */
2536     for (i = 0; i < nb_input_files; i++) {
2537         InputFile *ifile = input_files[i];
2538         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2539             AVProgram *p = ifile->ctx->programs[j];
2540             int discard  = AVDISCARD_ALL;
2541
2542             for (k = 0; k < p->nb_stream_indexes; k++)
2543                 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
2544                     discard = AVDISCARD_DEFAULT;
2545                     break;
2546                 }
2547             p->discard = discard;
2548         }
2549     }
2550
2551     /* open files and write file headers */
2552     for (i = 0; i < nb_output_files; i++) {
2553         oc = output_files[i]->ctx;
2554         oc->interrupt_callback = int_cb;
2555         if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
2556             char errbuf[128];
2557             av_strerror(ret, errbuf, sizeof(errbuf));
2558             snprintf(error, sizeof(error),
2559                      "Could not write header for output file #%d "
2560                      "(incorrect codec parameters ?): %s",
2561                      i, errbuf);
2562             ret = AVERROR(EINVAL);
2563             goto dump_format;
2564         }
2565 //         assert_avoptions(output_files[i]->opts);
2566         if (strcmp(oc->oformat->name, "rtp")) {
2567             want_sdp = 0;
2568         }
2569     }
2570
2571  dump_format:
2572     /* dump the file output parameters - cannot be done before in case
2573        of stream copy */
2574     for (i = 0; i < nb_output_files; i++) {
2575         av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
2576     }
2577
2578     /* dump the stream mapping */
2579     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2580     for (i = 0; i < nb_input_streams; i++) {
2581         ist = input_streams[i];
2582
2583         for (j = 0; j < ist->nb_filters; j++) {
2584             if (ist->filters[j]->graph->graph_desc) {
2585                 av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
2586                        ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
2587                        ist->filters[j]->name);
2588                 if (nb_filtergraphs > 1)
2589                     av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
2590                 av_log(NULL, AV_LOG_INFO, "\n");
2591             }
2592         }
2593     }
2594
2595     for (i = 0; i < nb_output_streams; i++) {
2596         ost = output_streams[i];
2597
2598         if (ost->attachment_filename) {
2599             /* an attached file */
2600             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
2601                    ost->attachment_filename, ost->file_index, ost->index);
2602             continue;
2603         }
2604
2605         if (ost->filter && ost->filter->graph->graph_desc) {
2606             /* output from a complex graph */
2607             av_log(NULL, AV_LOG_INFO, "  %s", ost->filter->name);
2608             if (nb_filtergraphs > 1)
2609                 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
2610
2611             av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
2612                    ost->index, ost->enc ? ost->enc->name : "?");
2613             continue;
2614         }
2615
2616         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
2617                input_streams[ost->source_index]->file_index,
2618                input_streams[ost->source_index]->st->index,
2619                ost->file_index,
2620                ost->index);
2621         if (ost->sync_ist != input_streams[ost->source_index])
2622             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2623                    ost->sync_ist->file_index,
2624                    ost->sync_ist->st->index);
2625         if (ost->stream_copy)
2626             av_log(NULL, AV_LOG_INFO, " (copy)");
2627         else
2628             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
2629                    input_streams[ost->source_index]->dec->name : "?",
2630                    ost->enc ? ost->enc->name : "?");
2631         av_log(NULL, AV_LOG_INFO, "\n");
2632     }
2633
2634     if (ret) {
2635         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2636         return ret;
2637     }
2638
2639     if (want_sdp) {
2640         print_sdp();
2641     }
2642
2643     return 0;
2644 }
2645
2646 /* Return 1 if there remain streams where more output is wanted, 0 otherwise. */
2647 static int need_output(void)
2648 {
2649     int i;
2650
2651     for (i = 0; i < nb_output_streams; i++) {
2652         OutputStream *ost    = output_streams[i];
2653         OutputFile *of       = output_files[ost->file_index];
2654         AVFormatContext *os  = output_files[ost->file_index]->ctx;
2655
2656         if (ost->finished ||
2657             (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2658             continue;
2659         if (ost->frame_number >= ost->max_frames) {
2660             int j;
2661             for (j = 0; j < of->ctx->nb_streams; j++)
2662                 close_output_stream(output_streams[of->ost_index + j]);
2663             continue;
2664         }
2665
2666         return 1;
2667     }
2668
2669     return 0;
2670 }
2671
2672 /**
2673  * Select the output stream to process.
2674  *
2675  * @return  selected output stream, or NULL if none available
2676  */
2677 static OutputStream *choose_output(void)
2678 {
2679     int i;
2680     int64_t opts_min = INT64_MAX;
2681     OutputStream *ost_min = NULL;
2682
2683     for (i = 0; i < nb_output_streams; i++) {
2684         OutputStream *ost = output_streams[i];
2685         int64_t opts = av_rescale_q(ost->st->cur_dts, ost->st->time_base,
2686                                     AV_TIME_BASE_Q);
2687         if (!ost->unavailable && !ost->finished && opts < opts_min) {
2688             opts_min = opts;
2689             ost_min  = ost;
2690         }
2691     }
2692     return ost_min;
2693 }
2694
2695 static int check_keyboard_interaction(int64_t cur_time)
2696 {
2697     int i, ret, key;
2698     static int64_t last_time;
2699     if (received_nb_signals)
2700         return AVERROR_EXIT;
2701     /* read_key() returns 0 on EOF */
2702     if(cur_time - last_time >= 100000 && !run_as_daemon){
2703         key =  read_key();
2704         last_time = cur_time;
2705     }else
2706         key = -1;
2707     if (key == 'q')
2708         return AVERROR_EXIT;
2709     if (key == '+') av_log_set_level(av_log_get_level()+10);
2710     if (key == '-') av_log_set_level(av_log_get_level()-10);
2711     if (key == 's') qp_hist     ^= 1;
2712     if (key == 'h'){
2713         if (do_hex_dump){
2714             do_hex_dump = do_pkt_dump = 0;
2715         } else if(do_pkt_dump){
2716             do_hex_dump = 1;
2717         } else
2718             do_pkt_dump = 1;
2719         av_log_set_level(AV_LOG_DEBUG);
2720     }
2721     if (key == 'c' || key == 'C'){
2722         char buf[4096], target[64], command[256], arg[256] = {0};
2723         double time;
2724         int k, n = 0;
2725         fprintf(stderr, "\nEnter command: <target>|all <time>|-1 <command>[ <argument>]\n");
2726         i = 0;
2727         while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
2728             if (k > 0)
2729                 buf[i++] = k;
2730         buf[i] = 0;
2731         if (k > 0 &&
2732             (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
2733             av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
2734                    target, time, command, arg);
2735             for (i = 0; i < nb_filtergraphs; i++) {
2736                 FilterGraph *fg = filtergraphs[i];
2737                 if (fg->graph) {
2738                     if (time < 0) {
2739                         ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
2740                                                           key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
2741                         fprintf(stderr, "Command reply for stream %d: ret:%d res:\n%s", i, ret, buf);
2742                     } else if (key == 'c') {
2743                         fprintf(stderr, "Queing commands only on filters supporting the specific command is unsupported\n");
2744                         ret = AVERROR_PATCHWELCOME;
2745                     } else {
2746                         ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
2747                     }
2748                 }
2749             }
2750         } else {
2751             av_log(NULL, AV_LOG_ERROR,
2752                    "Parse error, at least 3 arguments were expected, "
2753                    "only %d given in string '%s'\n", n, buf);
2754         }
2755     }
2756     if (key == 'd' || key == 'D'){
2757         int debug=0;
2758         if(key == 'D') {
2759             debug = input_streams[0]->st->codec->debug<<1;
2760             if(!debug) debug = 1;
2761             while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2762                 debug += debug;
2763         }else
2764             if(scanf("%d", &debug)!=1)
2765                 fprintf(stderr,"error parsing debug value\n");
2766         for(i=0;i<nb_input_streams;i++) {
2767             input_streams[i]->st->codec->debug = debug;
2768         }
2769         for(i=0;i<nb_output_streams;i++) {
2770             OutputStream *ost = output_streams[i];
2771             ost->st->codec->debug = debug;
2772         }
2773         if(debug) av_log_set_level(AV_LOG_DEBUG);
2774         fprintf(stderr,"debug=%d\n", debug);
2775     }
2776     if (key == '?'){
2777         fprintf(stderr, "key    function\n"
2778                         "?      show this help\n"
2779                         "+      increase verbosity\n"
2780                         "-      decrease verbosity\n"
2781                         "c      Send command to first matching filter supporting it\n"
2782                         "C      Send/Que command to all matching filters\n"
2783                         "D      cycle through available debug modes\n"
2784                         "h      dump packets/hex press to cycle through the 3 states\n"
2785                         "q      quit\n"
2786                         "s      Show QP histogram\n"
2787         );
2788     }
2789     return 0;
2790 }
2791
2792 #if HAVE_PTHREADS
2793 static void *input_thread(void *arg)
2794 {
2795     InputFile *f = arg;
2796     int ret = 0;
2797
2798     while (!transcoding_finished && ret >= 0) {
2799         AVPacket pkt;
2800         ret = av_read_frame(f->ctx, &pkt);
2801
2802         if (ret == AVERROR(EAGAIN)) {
2803             av_usleep(10000);
2804             ret = 0;
2805             continue;
2806         } else if (ret < 0)
2807             break;
2808
2809         pthread_mutex_lock(&f->fifo_lock);
2810         while (!av_fifo_space(f->fifo))
2811             pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
2812
2813         av_dup_packet(&pkt);
2814         av_fifo_generic_write(f->fifo, &pkt, sizeof(pkt), NULL);
2815
2816         pthread_mutex_unlock(&f->fifo_lock);
2817     }
2818
2819     f->finished = 1;
2820     return NULL;
2821 }
2822
2823 static void free_input_threads(void)
2824 {
2825     int i;
2826
2827     if (nb_input_files == 1)
2828         return;
2829
2830     transcoding_finished = 1;
2831
2832     for (i = 0; i < nb_input_files; i++) {
2833         InputFile *f = input_files[i];
2834         AVPacket pkt;
2835
2836         if (!f->fifo || f->joined)
2837             continue;
2838
2839         pthread_mutex_lock(&f->fifo_lock);
2840         while (av_fifo_size(f->fifo)) {
2841             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2842             av_free_packet(&pkt);
2843         }
2844         pthread_cond_signal(&f->fifo_cond);
2845         pthread_mutex_unlock(&f->fifo_lock);
2846
2847         pthread_join(f->thread, NULL);
2848         f->joined = 1;
2849
2850         while (av_fifo_size(f->fifo)) {
2851             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2852             av_free_packet(&pkt);
2853         }
2854         av_fifo_free(f->fifo);
2855     }
2856 }
2857
2858 static int init_input_threads(void)
2859 {
2860     int i, ret;
2861
2862     if (nb_input_files == 1)
2863         return 0;
2864
2865     for (i = 0; i < nb_input_files; i++) {
2866         InputFile *f = input_files[i];
2867
2868         if (!(f->fifo = av_fifo_alloc(8*sizeof(AVPacket))))
2869             return AVERROR(ENOMEM);
2870
2871         pthread_mutex_init(&f->fifo_lock, NULL);
2872         pthread_cond_init (&f->fifo_cond, NULL);
2873
2874         if ((ret = pthread_create(&f->thread, NULL, input_thread, f)))
2875             return AVERROR(ret);
2876     }
2877     return 0;
2878 }
2879
2880 static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
2881 {
2882     int ret = 0;
2883
2884     pthread_mutex_lock(&f->fifo_lock);
2885
2886     if (av_fifo_size(f->fifo)) {
2887         av_fifo_generic_read(f->fifo, pkt, sizeof(*pkt), NULL);
2888         pthread_cond_signal(&f->fifo_cond);
2889     } else {
2890         if (f->finished)
2891             ret = AVERROR_EOF;
2892         else
2893             ret = AVERROR(EAGAIN);
2894     }
2895
2896     pthread_mutex_unlock(&f->fifo_lock);
2897
2898     return ret;
2899 }
2900 #endif
2901
2902 static int get_input_packet(InputFile *f, AVPacket *pkt)
2903 {
2904     if (f->rate_emu) {
2905         int i;
2906         for (i = 0; i < f->nb_streams; i++) {
2907             InputStream *ist = input_streams[f->ist_index + i];
2908             int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
2909             int64_t now = av_gettime() - ist->start;
2910             if (pts > now)
2911                 return AVERROR(EAGAIN);
2912         }
2913     }
2914
2915 #if HAVE_PTHREADS
2916     if (nb_input_files > 1)
2917         return get_input_packet_mt(f, pkt);
2918 #endif
2919     return av_read_frame(f->ctx, pkt);
2920 }
2921
2922 static int got_eagain(void)
2923 {
2924     int i;
2925     for (i = 0; i < nb_output_streams; i++)
2926         if (output_streams[i]->unavailable)
2927             return 1;
2928     return 0;
2929 }
2930
2931 static void reset_eagain(void)
2932 {
2933     int i;
2934     for (i = 0; i < nb_input_files; i++)
2935         input_files[i]->eagain = 0;
2936     for (i = 0; i < nb_output_streams; i++)
2937         output_streams[i]->unavailable = 0;
2938 }
2939
2940 /*
2941  * Return
2942  * - 0 -- one packet was read and processed
2943  * - AVERROR(EAGAIN) -- no packets were available for selected file,
2944  *   this function should be called again
2945  * - AVERROR_EOF -- this function should not be called again
2946  */
2947 static int process_input(int file_index)
2948 {
2949     InputFile *ifile = input_files[file_index];
2950     AVFormatContext *is;
2951     InputStream *ist;
2952     AVPacket pkt;
2953     int ret, i, j;
2954
2955     is  = ifile->ctx;
2956     ret = get_input_packet(ifile, &pkt);
2957
2958     if (ret == AVERROR(EAGAIN)) {
2959         ifile->eagain = 1;
2960         return ret;
2961     }
2962     if (ret < 0) {
2963         if (ret != AVERROR_EOF) {
2964             print_error(is->filename, ret);
2965             if (exit_on_error)
2966                 exit_program(1);
2967         }
2968         ifile->eof_reached = 1;
2969
2970         for (i = 0; i < ifile->nb_streams; i++) {
2971             ist = input_streams[ifile->ist_index + i];
2972             if (ist->decoding_needed)
2973                 output_packet(ist, NULL);
2974
2975             /* mark all outputs that don't go through lavfi as finished */
2976             for (j = 0; j < nb_output_streams; j++) {
2977                 OutputStream *ost = output_streams[j];
2978
2979                 if (ost->source_index == ifile->ist_index + i &&
2980                     (ost->stream_copy || ost->enc->type == AVMEDIA_TYPE_SUBTITLE))
2981                     close_output_stream(ost);
2982             }
2983         }
2984
2985         return AVERROR(EAGAIN);
2986     }
2987
2988     reset_eagain();
2989
2990     if (do_pkt_dump) {
2991         av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2992                          is->streams[pkt.stream_index]);
2993     }
2994     /* the following test is needed in case new streams appear
2995        dynamically in stream : we ignore them */
2996     if (pkt.stream_index >= ifile->nb_streams) {
2997         report_new_stream(file_index, &pkt);
2998         goto discard_packet;
2999     }
3000
3001     ist = input_streams[ifile->ist_index + pkt.stream_index];
3002     if (ist->discard)
3003         goto discard_packet;
3004
3005     if (debug_ts) {
3006         av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
3007                "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",
3008                ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
3009                av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &AV_TIME_BASE_Q),
3010                av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &AV_TIME_BASE_Q),
3011                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
3012                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
3013                av_ts2str(input_files[ist->file_index]->ts_offset),
3014                av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
3015     }
3016
3017     if(!ist->wrap_correction_done && is->start_time != AV_NOPTS_VALUE && ist->st->pts_wrap_bits < 64){
3018         int64_t stime, stime2;
3019         // Correcting starttime based on the enabled streams
3020         // 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.
3021         //       so we instead do it here as part of discontinuity handling
3022         if (   ist->next_dts == AV_NOPTS_VALUE
3023             && ifile->ts_offset == -is->start_time
3024             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
3025             int64_t new_start_time = INT64_MAX;
3026             for (i=0; i<is->nb_streams; i++) {
3027                 AVStream *st = is->streams[i];
3028                 if(st->discard == AVDISCARD_ALL || st->start_time == AV_NOPTS_VALUE)
3029                     continue;
3030                 new_start_time = FFMIN(new_start_time, av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q));
3031             }
3032             if (new_start_time > is->start_time) {
3033                 av_log(is, AV_LOG_VERBOSE, "Correcting start time by %"PRId64"\n", new_start_time - is->start_time);
3034                 ifile->ts_offset = -new_start_time;
3035             }
3036         }
3037
3038         stime = av_rescale_q(is->start_time, AV_TIME_BASE_Q, ist->st->time_base);
3039         stime2= stime + (1ULL<<ist->st->pts_wrap_bits);
3040         ist->wrap_correction_done = 1;
3041
3042         if(stime2 > stime && pkt.dts != AV_NOPTS_VALUE && pkt.dts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
3043             pkt.dts -= 1ULL<<ist->st->pts_wrap_bits;
3044             ist->wrap_correction_done = 0;
3045         }
3046         if(stime2 > stime && pkt.pts != AV_NOPTS_VALUE && pkt.pts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
3047             pkt.pts -= 1ULL<<ist->st->pts_wrap_bits;
3048             ist->wrap_correction_done = 0;
3049         }
3050     }
3051
3052     if (pkt.dts != AV_NOPTS_VALUE)
3053         pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
3054     if (pkt.pts != AV_NOPTS_VALUE)
3055         pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
3056
3057     if (pkt.pts != AV_NOPTS_VALUE)
3058         pkt.pts *= ist->ts_scale;
3059     if (pkt.dts != AV_NOPTS_VALUE)
3060         pkt.dts *= ist->ts_scale;
3061
3062     if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts == AV_NOPTS_VALUE && !copy_ts
3063         && (is->iformat->flags & AVFMT_TS_DISCONT) && ifile->last_ts != AV_NOPTS_VALUE) {
3064         int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3065         int64_t delta   = pkt_dts - ifile->last_ts;
3066         if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
3067             (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
3068                 ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)){
3069             ifile->ts_offset -= delta;
3070             av_log(NULL, AV_LOG_DEBUG,
3071                    "Inter stream timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
3072                    delta, ifile->ts_offset);
3073             pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3074             if (pkt.pts != AV_NOPTS_VALUE)
3075                 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3076         }
3077     }
3078
3079     if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE &&
3080         !copy_ts) {
3081         int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3082         int64_t delta   = pkt_dts - ist->next_dts;
3083         if (is->iformat->flags & AVFMT_TS_DISCONT) {
3084         if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
3085             (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
3086                 ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
3087             pkt_dts + AV_TIME_BASE/10 < ist->pts){
3088             ifile->ts_offset -= delta;
3089             av_log(NULL, AV_LOG_DEBUG,
3090                    "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
3091                    delta, ifile->ts_offset);
3092             pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3093             if (pkt.pts != AV_NOPTS_VALUE)
3094                 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3095         }
3096         } else {
3097             if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3098                 (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
3099                ) {
3100                 av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
3101                 pkt.dts = AV_NOPTS_VALUE;
3102             }
3103             if (pkt.pts != AV_NOPTS_VALUE){
3104                 int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
3105                 delta   = pkt_pts - ist->next_dts;
3106                 if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3107                     (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
3108                    ) {
3109                     av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
3110                     pkt.pts = AV_NOPTS_VALUE;
3111                 }
3112             }
3113         }
3114     }
3115
3116     if (pkt.dts != AV_NOPTS_VALUE)
3117         ifile->last_ts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3118
3119     if (debug_ts) {
3120         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",
3121                ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
3122                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
3123                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
3124                av_ts2str(input_files[ist->file_index]->ts_offset),
3125                av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
3126     }
3127
3128     sub2video_heartbeat(ist, pkt.pts);
3129
3130     ret = output_packet(ist, &pkt);
3131     if (ret < 0) {
3132         char buf[128];
3133         av_strerror(ret, buf, sizeof(buf));
3134         av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d: %s\n",
3135                 ist->file_index, ist->st->index, buf);
3136         if (exit_on_error)
3137             exit_program(1);
3138     }
3139
3140 discard_packet:
3141     av_free_packet(&pkt);
3142
3143     return 0;
3144 }
3145
3146 /**
3147  * Perform a step of transcoding for the specified filter graph.
3148  *
3149  * @param[in]  graph     filter graph to consider
3150  * @param[out] best_ist  input stream where a frame would allow to continue
3151  * @return  0 for success, <0 for error
3152  */
3153 static int transcode_from_filter(FilterGraph *graph, InputStream **best_ist)
3154 {
3155     int i, ret;
3156     int nb_requests, nb_requests_max = 0;
3157     InputFilter *ifilter;
3158     InputStream *ist;
3159
3160     *best_ist = NULL;
3161     ret = avfilter_graph_request_oldest(graph->graph);
3162     if (ret >= 0)
3163         return reap_filters();
3164
3165     if (ret == AVERROR_EOF) {
3166         ret = reap_filters();
3167         for (i = 0; i < graph->nb_outputs; i++)
3168             close_output_stream(graph->outputs[i]->ost);
3169         return ret;
3170     }
3171     if (ret != AVERROR(EAGAIN))
3172         return ret;
3173
3174     for (i = 0; i < graph->nb_inputs; i++) {
3175         ifilter = graph->inputs[i];
3176         ist = ifilter->ist;
3177         if (input_files[ist->file_index]->eagain ||
3178             input_files[ist->file_index]->eof_reached)
3179             continue;
3180         nb_requests = av_buffersrc_get_nb_failed_requests(ifilter->filter);
3181         if (nb_requests > nb_requests_max) {
3182             nb_requests_max = nb_requests;
3183             *best_ist = ist;
3184         }
3185     }
3186
3187     if (!*best_ist)
3188         for (i = 0; i < graph->nb_outputs; i++)
3189             graph->outputs[i]->ost->unavailable = 1;
3190
3191     return 0;
3192 }
3193
3194 /**
3195  * Run a single step of transcoding.
3196  *
3197  * @return  0 for success, <0 for error
3198  */
3199 static int transcode_step(void)
3200 {
3201     OutputStream *ost;
3202     InputStream  *ist;
3203     int ret;
3204
3205     ost = choose_output();
3206     if (!ost) {
3207         if (got_eagain()) {
3208             reset_eagain();
3209             av_usleep(10000);
3210             return 0;
3211         }
3212         av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from, finishing.\n");
3213         return AVERROR_EOF;
3214     }
3215
3216     if (ost->filter) {
3217         if ((ret = transcode_from_filter(ost->filter->graph, &ist)) < 0)
3218             return ret;
3219         if (!ist)
3220             return 0;
3221     } else {
3222         av_assert0(ost->source_index >= 0);
3223         ist = input_streams[ost->source_index];
3224     }
3225
3226     ret = process_input(ist->file_index);
3227     if (ret == AVERROR(EAGAIN)) {
3228         if (input_files[ist->file_index]->eagain)
3229             ost->unavailable = 1;
3230         return 0;
3231     }
3232     if (ret < 0)
3233         return ret == AVERROR_EOF ? 0 : ret;
3234
3235     return reap_filters();
3236 }
3237
3238 /*
3239  * The following code is the main loop of the file converter
3240  */
3241 static int transcode(void)
3242 {
3243     int ret, i;
3244     AVFormatContext *os;
3245     OutputStream *ost;
3246     InputStream *ist;
3247     int64_t timer_start;
3248
3249     ret = transcode_init();
3250     if (ret < 0)
3251         goto fail;
3252
3253     if (stdin_interaction) {
3254         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
3255     }
3256
3257     timer_start = av_gettime();
3258
3259 #if HAVE_PTHREADS
3260     if ((ret = init_input_threads()) < 0)
3261         goto fail;
3262 #endif
3263
3264     while (!received_sigterm) {
3265         int64_t cur_time= av_gettime();
3266
3267         /* if 'q' pressed, exits */
3268         if (stdin_interaction)
3269             if (check_keyboard_interaction(cur_time) < 0)
3270                 break;
3271
3272         /* check if there's any stream where output is still needed */
3273         if (!need_output()) {
3274             av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
3275             break;
3276         }
3277
3278         ret = transcode_step();
3279         if (ret < 0) {
3280             if (ret == AVERROR_EOF || ret == AVERROR(EAGAIN))
3281                 continue;
3282
3283             av_log(NULL, AV_LOG_ERROR, "Error while filtering.\n");
3284             break;
3285         }
3286
3287         /* dump report by using the output first video and audio streams */
3288         print_report(0, timer_start, cur_time);
3289     }
3290 #if HAVE_PTHREADS
3291     free_input_threads();
3292 #endif
3293
3294     /* at the end of stream, we must flush the decoder buffers */
3295     for (i = 0; i < nb_input_streams; i++) {
3296         ist = input_streams[i];
3297         if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
3298             output_packet(ist, NULL);
3299         }
3300     }
3301     flush_encoders();
3302
3303     term_exit();
3304
3305     /* write the trailer if needed and close file */
3306     for (i = 0; i < nb_output_files; i++) {
3307         os = output_files[i]->ctx;
3308         av_write_trailer(os);
3309     }
3310
3311     /* dump report by using the first video and audio streams */
3312     print_report(1, timer_start, av_gettime());
3313
3314     /* close each encoder */
3315     for (i = 0; i < nb_output_streams; i++) {
3316         ost = output_streams[i];
3317         if (ost->encoding_needed) {
3318             av_freep(&ost->st->codec->stats_in);
3319             avcodec_close(ost->st->codec);
3320         }
3321     }
3322
3323     /* close each decoder */
3324     for (i = 0; i < nb_input_streams; i++) {
3325         ist = input_streams[i];
3326         if (ist->decoding_needed) {
3327             avcodec_close(ist->st->codec);
3328         }
3329     }
3330
3331     /* finished ! */
3332     ret = 0;
3333
3334  fail:
3335 #if HAVE_PTHREADS
3336     free_input_threads();
3337 #endif
3338
3339     if (output_streams) {
3340         for (i = 0; i < nb_output_streams; i++) {
3341             ost = output_streams[i];
3342             if (ost) {
3343                 if (ost->stream_copy)
3344                     av_freep(&ost->st->codec->extradata);
3345                 if (ost->logfile) {
3346                     fclose(ost->logfile);
3347                     ost->logfile = NULL;
3348                 }
3349                 av_freep(&ost->st->codec->subtitle_header);
3350                 av_freep(&ost->forced_kf_pts);
3351                 av_freep(&ost->apad);
3352                 av_dict_free(&ost->opts);
3353                 av_dict_free(&ost->swr_opts);
3354                 av_dict_free(&ost->resample_opts);
3355             }
3356         }
3357     }
3358     return ret;
3359 }
3360
3361
3362 static int64_t getutime(void)
3363 {
3364 #if HAVE_GETRUSAGE
3365     struct rusage rusage;
3366
3367     getrusage(RUSAGE_SELF, &rusage);
3368     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
3369 #elif HAVE_GETPROCESSTIMES
3370     HANDLE proc;
3371     FILETIME c, e, k, u;
3372     proc = GetCurrentProcess();
3373     GetProcessTimes(proc, &c, &e, &k, &u);
3374     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
3375 #else
3376     return av_gettime();
3377 #endif
3378 }
3379
3380 static int64_t getmaxrss(void)
3381 {
3382 #if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
3383     struct rusage rusage;
3384     getrusage(RUSAGE_SELF, &rusage);
3385     return (int64_t)rusage.ru_maxrss * 1024;
3386 #elif HAVE_GETPROCESSMEMORYINFO
3387     HANDLE proc;
3388     PROCESS_MEMORY_COUNTERS memcounters;
3389     proc = GetCurrentProcess();
3390     memcounters.cb = sizeof(memcounters);
3391     GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
3392     return memcounters.PeakPagefileUsage;
3393 #else
3394     return 0;
3395 #endif
3396 }
3397
3398 static void log_callback_null(void *ptr, int level, const char *fmt, va_list vl)
3399 {
3400 }
3401
3402 int main(int argc, char **argv)
3403 {
3404     int ret;
3405     int64_t ti;
3406
3407     register_exit(ffmpeg_cleanup);
3408
3409     setvbuf(stderr,NULL,_IONBF,0); /* win32 runtime needs this */
3410
3411     av_log_set_flags(AV_LOG_SKIP_REPEATED);
3412     parse_loglevel(argc, argv, options);
3413
3414     if(argc>1 && !strcmp(argv[1], "-d")){
3415         run_as_daemon=1;
3416         av_log_set_callback(log_callback_null);
3417         argc--;
3418         argv++;
3419     }
3420
3421     avcodec_register_all();
3422 #if CONFIG_AVDEVICE
3423     avdevice_register_all();
3424 #endif
3425     avfilter_register_all();
3426     av_register_all();
3427     avformat_network_init();
3428
3429     show_banner(argc, argv, options);
3430
3431     term_init();
3432
3433     /* parse options and open all input/output files */
3434     ret = ffmpeg_parse_options(argc, argv);
3435     if (ret < 0)
3436         exit_program(1);
3437
3438     if (nb_output_files <= 0 && nb_input_files == 0) {
3439         show_usage();
3440         av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
3441         exit_program(1);
3442     }
3443
3444     /* file converter / grab */
3445     if (nb_output_files <= 0) {
3446         av_log(NULL, AV_LOG_FATAL, "At least one output file must be specified\n");
3447         exit_program(1);
3448     }
3449
3450 //     if (nb_input_files == 0) {
3451 //         av_log(NULL, AV_LOG_FATAL, "At least one input file must be specified\n");
3452 //         exit_program(1);
3453 //     }
3454
3455     current_time = ti = getutime();
3456     if (transcode() < 0)
3457         exit_program(1);
3458     ti = getutime() - ti;
3459     if (do_benchmark) {
3460         printf("bench: utime=%0.3fs\n", ti / 1000000.0);
3461     }
3462     av_log(NULL, AV_LOG_DEBUG, "%"PRIu64" frames successfully decoded, %"PRIu64" decoding errors\n",
3463            decode_error_stat[0], decode_error_stat[1]);
3464     if ((decode_error_stat[0] + decode_error_stat[1]) * max_error_rate < decode_error_stat[1])
3465         exit_program(69);
3466
3467     exit_program(received_nb_signals ? 255 : 0);
3468     return 0;
3469 }