c97f46285ee78566f1cd848638b0aa2e1df1ab5d
[ffmpeg.git] / ffmpeg.c
1 /*
2  * Copyright (c) 2000-2003 Fabrice Bellard
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20
21 /**
22  * @file
23  * multimedia converter based on the FFmpeg libraries
24  */
25
26 #include "config.h"
27 #include <ctype.h>
28 #include <string.h>
29 #include <math.h>
30 #include <stdlib.h>
31 #include <errno.h>
32 #include <limits.h>
33 #include <stdint.h>
34
35 #if HAVE_ISATTY
36 #if HAVE_IO_H
37 #include <io.h>
38 #endif
39 #if HAVE_UNISTD_H
40 #include <unistd.h>
41 #endif
42 #endif
43
44 #include "libavformat/avformat.h"
45 #include "libavdevice/avdevice.h"
46 #include "libswresample/swresample.h"
47 #include "libavutil/opt.h"
48 #include "libavutil/channel_layout.h"
49 #include "libavutil/parseutils.h"
50 #include "libavutil/samplefmt.h"
51 #include "libavutil/fifo.h"
52 #include "libavutil/intreadwrite.h"
53 #include "libavutil/dict.h"
54 #include "libavutil/mathematics.h"
55 #include "libavutil/pixdesc.h"
56 #include "libavutil/avstring.h"
57 #include "libavutil/libm.h"
58 #include "libavutil/imgutils.h"
59 #include "libavutil/timestamp.h"
60 #include "libavutil/bprint.h"
61 #include "libavutil/time.h"
62 #include "libavformat/os_support.h"
63
64 #include "libavformat/ffm.h" // not public API
65
66 # include "libavfilter/avcodec.h"
67 # include "libavfilter/avfilter.h"
68 # include "libavfilter/buffersrc.h"
69 # include "libavfilter/buffersink.h"
70
71 #if HAVE_SYS_RESOURCE_H
72 #include <sys/time.h>
73 #include <sys/types.h>
74 #include <sys/resource.h>
75 #elif HAVE_GETPROCESSTIMES
76 #include <windows.h>
77 #endif
78 #if HAVE_GETPROCESSMEMORYINFO
79 #include <windows.h>
80 #include <psapi.h>
81 #endif
82
83 #if HAVE_SYS_SELECT_H
84 #include <sys/select.h>
85 #endif
86
87 #if HAVE_TERMIOS_H
88 #include <fcntl.h>
89 #include <sys/ioctl.h>
90 #include <sys/time.h>
91 #include <termios.h>
92 #elif HAVE_KBHIT
93 #include <conio.h>
94 #endif
95
96 #if HAVE_PTHREADS
97 #include <pthread.h>
98 #endif
99
100 #include <time.h>
101
102 #include "ffmpeg.h"
103 #include "cmdutils.h"
104
105 #include "libavutil/avassert.h"
106
107 const char program_name[] = "ffmpeg";
108 const int program_birth_year = 2000;
109
110 static FILE *vstats_file;
111
112 const char *const forced_keyframes_const_names[] = {
113     "n",
114     "n_forced",
115     "prev_forced_n",
116     "prev_forced_t",
117     "t",
118     NULL
119 };
120
121 static void do_video_stats(OutputStream *ost, int frame_size);
122 static int64_t getutime(void);
123 static int64_t getmaxrss(void);
124
125 static int run_as_daemon  = 0;
126 static int nb_frames_dup = 0;
127 static int nb_frames_drop = 0;
128 static int64_t decode_error_stat[2];
129
130 static int current_time;
131 AVIOContext *progress_avio = NULL;
132
133 static uint8_t *subtitle_out;
134
135 #if HAVE_PTHREADS
136 /* signal to input threads that they should exit; set by the main thread */
137 static int transcoding_finished;
138 #endif
139
140 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
141
142 InputStream **input_streams = NULL;
143 int        nb_input_streams = 0;
144 InputFile   **input_files   = NULL;
145 int        nb_input_files   = 0;
146
147 OutputStream **output_streams = NULL;
148 int         nb_output_streams = 0;
149 OutputFile   **output_files   = NULL;
150 int         nb_output_files   = 0;
151
152 FilterGraph **filtergraphs;
153 int        nb_filtergraphs;
154
155 #if HAVE_TERMIOS_H
156
157 /* init terminal so that we can grab keys */
158 static struct termios oldtty;
159 static int restore_tty;
160 #endif
161
162 static void free_input_threads(void);
163
164
165 /* sub2video hack:
166    Convert subtitles to video with alpha to insert them in filter graphs.
167    This is a temporary solution until libavfilter gets real subtitles support.
168  */
169
170 static int sub2video_get_blank_frame(InputStream *ist)
171 {
172     int ret;
173     AVFrame *frame = ist->sub2video.frame;
174
175     av_frame_unref(frame);
176     ist->sub2video.frame->width  = ist->sub2video.w;
177     ist->sub2video.frame->height = ist->sub2video.h;
178     ist->sub2video.frame->format = AV_PIX_FMT_RGB32;
179     if ((ret = av_frame_get_buffer(frame, 32)) < 0)
180         return ret;
181     memset(frame->data[0], 0, frame->height * frame->linesize[0]);
182     return 0;
183 }
184
185 static void sub2video_copy_rect(uint8_t *dst, int dst_linesize, int w, int h,
186                                 AVSubtitleRect *r)
187 {
188     uint32_t *pal, *dst2;
189     uint8_t *src, *src2;
190     int x, y;
191
192     if (r->type != SUBTITLE_BITMAP) {
193         av_log(NULL, AV_LOG_WARNING, "sub2video: non-bitmap subtitle\n");
194         return;
195     }
196     if (r->x < 0 || r->x + r->w > w || r->y < 0 || r->y + r->h > h) {
197         av_log(NULL, AV_LOG_WARNING, "sub2video: rectangle overflowing\n");
198         return;
199     }
200
201     dst += r->y * dst_linesize + r->x * 4;
202     src = r->pict.data[0];
203     pal = (uint32_t *)r->pict.data[1];
204     for (y = 0; y < r->h; y++) {
205         dst2 = (uint32_t *)dst;
206         src2 = src;
207         for (x = 0; x < r->w; x++)
208             *(dst2++) = pal[*(src2++)];
209         dst += dst_linesize;
210         src += r->pict.linesize[0];
211     }
212 }
213
214 static void sub2video_push_ref(InputStream *ist, int64_t pts)
215 {
216     AVFrame *frame = ist->sub2video.frame;
217     int i;
218
219     av_assert1(frame->data[0]);
220     ist->sub2video.last_pts = frame->pts = pts;
221     for (i = 0; i < ist->nb_filters; i++)
222         av_buffersrc_add_frame_flags(ist->filters[i]->filter, frame,
223                                      AV_BUFFERSRC_FLAG_KEEP_REF |
224                                      AV_BUFFERSRC_FLAG_PUSH);
225 }
226
227 static void sub2video_update(InputStream *ist, AVSubtitle *sub)
228 {
229     int w = ist->sub2video.w, h = ist->sub2video.h;
230     AVFrame *frame = ist->sub2video.frame;
231     int8_t *dst;
232     int     dst_linesize;
233     int num_rects, i;
234     int64_t pts, end_pts;
235
236     if (!frame)
237         return;
238     if (sub) {
239         pts       = av_rescale_q(sub->pts + sub->start_display_time * 1000,
240                                  AV_TIME_BASE_Q, ist->st->time_base);
241         end_pts   = av_rescale_q(sub->pts + sub->end_display_time   * 1000,
242                                  AV_TIME_BASE_Q, ist->st->time_base);
243         num_rects = sub->num_rects;
244     } else {
245         pts       = ist->sub2video.end_pts;
246         end_pts   = INT64_MAX;
247         num_rects = 0;
248     }
249     if (sub2video_get_blank_frame(ist) < 0) {
250         av_log(ist->st->codec, AV_LOG_ERROR,
251                "Impossible to get a blank canvas.\n");
252         return;
253     }
254     dst          = frame->data    [0];
255     dst_linesize = frame->linesize[0];
256     for (i = 0; i < num_rects; i++)
257         sub2video_copy_rect(dst, dst_linesize, w, h, sub->rects[i]);
258     sub2video_push_ref(ist, pts);
259     ist->sub2video.end_pts = end_pts;
260 }
261
262 static void sub2video_heartbeat(InputStream *ist, int64_t pts)
263 {
264     InputFile *infile = input_files[ist->file_index];
265     int i, j, nb_reqs;
266     int64_t pts2;
267
268     /* When a frame is read from a file, examine all sub2video streams in
269        the same file and send the sub2video frame again. Otherwise, decoded
270        video frames could be accumulating in the filter graph while a filter
271        (possibly overlay) is desperately waiting for a subtitle frame. */
272     for (i = 0; i < infile->nb_streams; i++) {
273         InputStream *ist2 = input_streams[infile->ist_index + i];
274         if (!ist2->sub2video.frame)
275             continue;
276         /* subtitles seem to be usually muxed ahead of other streams;
277            if not, substracting a larger time here is necessary */
278         pts2 = av_rescale_q(pts, ist->st->time_base, ist2->st->time_base) - 1;
279         /* do not send the heartbeat frame if the subtitle is already ahead */
280         if (pts2 <= ist2->sub2video.last_pts)
281             continue;
282         if (pts2 >= ist2->sub2video.end_pts || !ist2->sub2video.frame->data[0])
283             sub2video_update(ist2, NULL);
284         for (j = 0, nb_reqs = 0; j < ist2->nb_filters; j++)
285             nb_reqs += av_buffersrc_get_nb_failed_requests(ist2->filters[j]->filter);
286         if (nb_reqs)
287             sub2video_push_ref(ist2, pts2);
288     }
289 }
290
291 static void sub2video_flush(InputStream *ist)
292 {
293     int i;
294
295     if (ist->sub2video.end_pts < INT64_MAX)
296         sub2video_update(ist, NULL);
297     for (i = 0; i < ist->nb_filters; i++)
298         av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
299 }
300
301 /* end of sub2video hack */
302
303 static void term_exit_sigsafe(void)
304 {
305 #if HAVE_TERMIOS_H
306     if(restore_tty)
307         tcsetattr (0, TCSANOW, &oldtty);
308 #endif
309 }
310
311 void term_exit(void)
312 {
313     av_log(NULL, AV_LOG_QUIET, "%s", "");
314     term_exit_sigsafe();
315 }
316
317 static volatile int received_sigterm = 0;
318 static volatile int received_nb_signals = 0;
319 static volatile int transcode_init_done = 0;
320 static int main_return_code = 0;
321
322 static void
323 sigterm_handler(int sig)
324 {
325     received_sigterm = sig;
326     received_nb_signals++;
327     term_exit_sigsafe();
328     if(received_nb_signals > 3)
329         exit(123);
330 }
331
332 void term_init(void)
333 {
334 #if HAVE_TERMIOS_H
335     if(!run_as_daemon){
336         struct termios tty;
337         int istty = 1;
338 #if HAVE_ISATTY
339         istty = isatty(0) && isatty(2);
340 #endif
341         if (istty && tcgetattr (0, &tty) == 0) {
342             oldtty = tty;
343             restore_tty = 1;
344
345             tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
346                              |INLCR|IGNCR|ICRNL|IXON);
347             tty.c_oflag |= OPOST;
348             tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
349             tty.c_cflag &= ~(CSIZE|PARENB);
350             tty.c_cflag |= CS8;
351             tty.c_cc[VMIN] = 1;
352             tty.c_cc[VTIME] = 0;
353
354             tcsetattr (0, TCSANOW, &tty);
355         }
356         signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
357     }
358 #endif
359     avformat_network_deinit();
360
361     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
362     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
363 #ifdef SIGXCPU
364     signal(SIGXCPU, sigterm_handler);
365 #endif
366 }
367
368 /* read a key without blocking */
369 static int read_key(void)
370 {
371     unsigned char ch;
372 #if HAVE_TERMIOS_H
373     int n = 1;
374     struct timeval tv;
375     fd_set rfds;
376
377     FD_ZERO(&rfds);
378     FD_SET(0, &rfds);
379     tv.tv_sec = 0;
380     tv.tv_usec = 0;
381     n = select(1, &rfds, NULL, NULL, &tv);
382     if (n > 0) {
383         n = read(0, &ch, 1);
384         if (n == 1)
385             return ch;
386
387         return n;
388     }
389 #elif HAVE_KBHIT
390 #    if HAVE_PEEKNAMEDPIPE
391     static int is_pipe;
392     static HANDLE input_handle;
393     DWORD dw, nchars;
394     if(!input_handle){
395         input_handle = GetStdHandle(STD_INPUT_HANDLE);
396         is_pipe = !GetConsoleMode(input_handle, &dw);
397     }
398
399     if (stdin->_cnt > 0) {
400         read(0, &ch, 1);
401         return ch;
402     }
403     if (is_pipe) {
404         /* When running under a GUI, you will end here. */
405         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL)) {
406             // input pipe may have been closed by the program that ran ffmpeg
407             return -1;
408         }
409         //Read it
410         if(nchars != 0) {
411             read(0, &ch, 1);
412             return ch;
413         }else{
414             return -1;
415         }
416     }
417 #    endif
418     if(kbhit())
419         return(getch());
420 #endif
421     return -1;
422 }
423
424 static int decode_interrupt_cb(void *ctx)
425 {
426     return received_nb_signals > transcode_init_done;
427 }
428
429 const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
430
431 static void ffmpeg_cleanup(int ret)
432 {
433     int i, j;
434
435     if (do_benchmark) {
436         int maxrss = getmaxrss() / 1024;
437         printf("bench: maxrss=%ikB\n", maxrss);
438     }
439
440     for (i = 0; i < nb_filtergraphs; i++) {
441         avfilter_graph_free(&filtergraphs[i]->graph);
442         for (j = 0; j < filtergraphs[i]->nb_inputs; j++) {
443             av_freep(&filtergraphs[i]->inputs[j]->name);
444             av_freep(&filtergraphs[i]->inputs[j]);
445         }
446         av_freep(&filtergraphs[i]->inputs);
447         for (j = 0; j < filtergraphs[i]->nb_outputs; j++) {
448             av_freep(&filtergraphs[i]->outputs[j]->name);
449             av_freep(&filtergraphs[i]->outputs[j]);
450         }
451         av_freep(&filtergraphs[i]->outputs);
452         av_freep(&filtergraphs[i]->graph_desc);
453         av_freep(&filtergraphs[i]);
454     }
455     av_freep(&filtergraphs);
456
457     av_freep(&subtitle_out);
458
459     /* close files */
460     for (i = 0; i < nb_output_files; i++) {
461         AVFormatContext *s = output_files[i]->ctx;
462         if (s && s->oformat && !(s->oformat->flags & AVFMT_NOFILE) && s->pb)
463             avio_close(s->pb);
464         avformat_free_context(s);
465         av_dict_free(&output_files[i]->opts);
466         av_freep(&output_files[i]);
467     }
468     for (i = 0; i < nb_output_streams; i++) {
469         AVBitStreamFilterContext *bsfc = output_streams[i]->bitstream_filters;
470         while (bsfc) {
471             AVBitStreamFilterContext *next = bsfc->next;
472             av_bitstream_filter_close(bsfc);
473             bsfc = next;
474         }
475         output_streams[i]->bitstream_filters = NULL;
476         av_frame_free(&output_streams[i]->filtered_frame);
477
478         av_parser_close(output_streams[i]->parser);
479
480         av_freep(&output_streams[i]->forced_keyframes);
481         av_expr_free(output_streams[i]->forced_keyframes_pexpr);
482         av_freep(&output_streams[i]->avfilter);
483         av_freep(&output_streams[i]->logfile_prefix);
484         av_freep(&output_streams[i]);
485     }
486 #if HAVE_PTHREADS
487     free_input_threads();
488 #endif
489     for (i = 0; i < nb_input_files; i++) {
490         avformat_close_input(&input_files[i]->ctx);
491         av_freep(&input_files[i]);
492     }
493     for (i = 0; i < nb_input_streams; i++) {
494         av_frame_free(&input_streams[i]->decoded_frame);
495         av_frame_free(&input_streams[i]->filter_frame);
496         av_dict_free(&input_streams[i]->opts);
497         avsubtitle_free(&input_streams[i]->prev_sub.subtitle);
498         av_frame_free(&input_streams[i]->sub2video.frame);
499         av_freep(&input_streams[i]->filters);
500         av_freep(&input_streams[i]->hwaccel_device);
501         av_freep(&input_streams[i]);
502     }
503
504     if (vstats_file)
505         fclose(vstats_file);
506     av_free(vstats_filename);
507
508     av_freep(&input_streams);
509     av_freep(&input_files);
510     av_freep(&output_streams);
511     av_freep(&output_files);
512
513     uninit_opts();
514
515     avformat_network_deinit();
516
517     if (received_sigterm) {
518         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
519                (int) received_sigterm);
520     }
521     term_exit();
522 }
523
524 void assert_avoptions(AVDictionary *m)
525 {
526     AVDictionaryEntry *t;
527     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
528         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
529         exit_program(1);
530     }
531 }
532
533 static void abort_codec_experimental(AVCodec *c, int encoder)
534 {
535     exit_program(1);
536 }
537
538 static void update_benchmark(const char *fmt, ...)
539 {
540     if (do_benchmark_all) {
541         int64_t t = getutime();
542         va_list va;
543         char buf[1024];
544
545         if (fmt) {
546             va_start(va, fmt);
547             vsnprintf(buf, sizeof(buf), fmt, va);
548             va_end(va);
549             printf("bench: %8"PRIu64" %s \n", t - current_time, buf);
550         }
551         current_time = t;
552     }
553 }
554
555 static void close_all_output_streams(OutputStream *ost, OSTFinished this_stream, OSTFinished others)
556 {
557     int i;
558     for (i = 0; i < nb_output_streams; i++) {
559         OutputStream *ost2 = output_streams[i];
560         ost2->finished |= ost == ost2 ? this_stream : others;
561     }
562 }
563
564 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
565 {
566     AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
567     AVCodecContext          *avctx = ost->st->codec;
568     int ret;
569
570     if ((avctx->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
571         (avctx->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
572         pkt->pts = pkt->dts = AV_NOPTS_VALUE;
573
574     /*
575      * Audio encoders may split the packets --  #frames in != #packets out.
576      * But there is no reordering, so we can limit the number of output packets
577      * by simply dropping them here.
578      * Counting encoded video frames needs to be done separately because of
579      * reordering, see do_video_out()
580      */
581     if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
582         if (ost->frame_number >= ost->max_frames) {
583             av_free_packet(pkt);
584             return;
585         }
586         ost->frame_number++;
587     }
588
589     while (bsfc) {
590         AVPacket new_pkt = *pkt;
591         int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
592                                            &new_pkt.data, &new_pkt.size,
593                                            pkt->data, pkt->size,
594                                            pkt->flags & AV_PKT_FLAG_KEY);
595         if(a == 0 && new_pkt.data != pkt->data && new_pkt.destruct) {
596             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
597             if(t) {
598                 memcpy(t, new_pkt.data, new_pkt.size);
599                 memset(t + new_pkt.size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
600                 new_pkt.data = t;
601                 new_pkt.buf = NULL;
602                 a = 1;
603             } else
604                 a = AVERROR(ENOMEM);
605         }
606         if (a > 0) {
607             av_free_packet(pkt);
608             new_pkt.buf = av_buffer_create(new_pkt.data, new_pkt.size,
609                                            av_buffer_default_free, NULL, 0);
610             if (!new_pkt.buf)
611                 exit_program(1);
612         } else if (a < 0) {
613             av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
614                    bsfc->filter->name, pkt->stream_index,
615                    avctx->codec ? avctx->codec->name : "copy");
616             print_error("", a);
617             if (exit_on_error)
618                 exit_program(1);
619         }
620         *pkt = new_pkt;
621
622         bsfc = bsfc->next;
623     }
624
625     if (!(s->oformat->flags & AVFMT_NOTIMESTAMPS) &&
626         (avctx->codec_type == AVMEDIA_TYPE_AUDIO || avctx->codec_type == AVMEDIA_TYPE_VIDEO) &&
627         pkt->dts != AV_NOPTS_VALUE &&
628         ost->last_mux_dts != AV_NOPTS_VALUE) {
629       int64_t max = ost->last_mux_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
630       if (pkt->dts < max) {
631         int loglevel = max - pkt->dts > 2 || avctx->codec_type == AVMEDIA_TYPE_VIDEO ? AV_LOG_WARNING : AV_LOG_DEBUG;
632         av_log(s, loglevel, "Non-monotonous DTS in output stream "
633                "%d:%d; previous: %"PRId64", current: %"PRId64"; ",
634                ost->file_index, ost->st->index, ost->last_mux_dts, pkt->dts);
635         if (exit_on_error) {
636             av_log(NULL, AV_LOG_FATAL, "aborting.\n");
637             exit_program(1);
638         }
639         av_log(s, loglevel, "changing to %"PRId64". This may result "
640                "in incorrect timestamps in the output file.\n",
641                max);
642         if(pkt->pts >= pkt->dts)
643             pkt->pts = FFMAX(pkt->pts, max);
644         pkt->dts = max;
645       }
646     }
647     ost->last_mux_dts = pkt->dts;
648
649     ost->data_size += pkt->size;
650     ost->packets_written++;
651
652     pkt->stream_index = ost->index;
653
654     if (debug_ts) {
655         av_log(NULL, AV_LOG_INFO, "muxer <- type:%s "
656                 "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s size:%d\n",
657                 av_get_media_type_string(ost->st->codec->codec_type),
658                 av_ts2str(pkt->pts), av_ts2timestr(pkt->pts, &ost->st->time_base),
659                 av_ts2str(pkt->dts), av_ts2timestr(pkt->dts, &ost->st->time_base),
660                 pkt->size
661               );
662     }
663
664     ret = av_interleaved_write_frame(s, pkt);
665     if (ret < 0) {
666         print_error("av_interleaved_write_frame()", ret);
667         main_return_code = 1;
668         close_all_output_streams(ost, MUXER_FINISHED | ENCODER_FINISHED, ENCODER_FINISHED);
669     }
670     av_free_packet(pkt);
671 }
672
673 static void close_output_stream(OutputStream *ost)
674 {
675     OutputFile *of = output_files[ost->file_index];
676
677     ost->finished |= ENCODER_FINISHED;
678     if (of->shortest) {
679         int64_t end = av_rescale_q(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, AV_TIME_BASE_Q);
680         of->recording_time = FFMIN(of->recording_time, end);
681     }
682 }
683
684 static int check_recording_time(OutputStream *ost)
685 {
686     OutputFile *of = output_files[ost->file_index];
687
688     if (of->recording_time != INT64_MAX &&
689         av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
690                       AV_TIME_BASE_Q) >= 0) {
691         close_output_stream(ost);
692         return 0;
693     }
694     return 1;
695 }
696
697 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
698                          AVFrame *frame)
699 {
700     AVCodecContext *enc = ost->st->codec;
701     AVPacket pkt;
702     int got_packet = 0;
703
704     av_init_packet(&pkt);
705     pkt.data = NULL;
706     pkt.size = 0;
707
708     if (!check_recording_time(ost))
709         return;
710
711     if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
712         frame->pts = ost->sync_opts;
713     ost->sync_opts = frame->pts + frame->nb_samples;
714     ost->samples_encoded += frame->nb_samples;
715     ost->frames_encoded++;
716
717     av_assert0(pkt.size || !pkt.data);
718     update_benchmark(NULL);
719     if (debug_ts) {
720         av_log(NULL, AV_LOG_INFO, "encoder <- type:audio "
721                "frame_pts:%s frame_pts_time:%s time_base:%d/%d\n",
722                av_ts2str(frame->pts), av_ts2timestr(frame->pts, &enc->time_base),
723                enc->time_base.num, enc->time_base.den);
724     }
725
726     if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
727         av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
728         exit_program(1);
729     }
730     update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
731
732     if (got_packet) {
733         if (pkt.pts != AV_NOPTS_VALUE)
734             pkt.pts      = av_rescale_q(pkt.pts,      enc->time_base, ost->st->time_base);
735         if (pkt.dts != AV_NOPTS_VALUE)
736             pkt.dts      = av_rescale_q(pkt.dts,      enc->time_base, ost->st->time_base);
737         if (pkt.duration > 0)
738             pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
739
740         if (debug_ts) {
741             av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
742                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
743                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
744                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
745         }
746
747         write_frame(s, &pkt, ost);
748     }
749 }
750
751 static void do_subtitle_out(AVFormatContext *s,
752                             OutputStream *ost,
753                             InputStream *ist,
754                             AVSubtitle *sub)
755 {
756     int subtitle_out_max_size = 1024 * 1024;
757     int subtitle_out_size, nb, i;
758     AVCodecContext *enc;
759     AVPacket pkt;
760     int64_t pts;
761
762     if (sub->pts == AV_NOPTS_VALUE) {
763         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
764         if (exit_on_error)
765             exit_program(1);
766         return;
767     }
768
769     enc = ost->st->codec;
770
771     if (!subtitle_out) {
772         subtitle_out = av_malloc(subtitle_out_max_size);
773     }
774
775     /* Note: DVB subtitle need one packet to draw them and one other
776        packet to clear them */
777     /* XXX: signal it in the codec context ? */
778     if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE)
779         nb = 2;
780     else
781         nb = 1;
782
783     /* shift timestamp to honor -ss and make check_recording_time() work with -t */
784     pts = sub->pts;
785     if (output_files[ost->file_index]->start_time != AV_NOPTS_VALUE)
786         pts -= output_files[ost->file_index]->start_time;
787     for (i = 0; i < nb; i++) {
788         ost->sync_opts = av_rescale_q(pts, AV_TIME_BASE_Q, enc->time_base);
789         if (!check_recording_time(ost))
790             return;
791
792         sub->pts = pts;
793         // start_display_time is required to be 0
794         sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
795         sub->end_display_time  -= sub->start_display_time;
796         sub->start_display_time = 0;
797         if (i == 1)
798             sub->num_rects = 0;
799
800         ost->frames_encoded++;
801
802         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
803                                                     subtitle_out_max_size, sub);
804         if (subtitle_out_size < 0) {
805             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
806             exit_program(1);
807         }
808
809         av_init_packet(&pkt);
810         pkt.data = subtitle_out;
811         pkt.size = subtitle_out_size;
812         pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
813         pkt.duration = av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->st->time_base);
814         if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
815             /* XXX: the pts correction is handled here. Maybe handling
816                it in the codec would be better */
817             if (i == 0)
818                 pkt.pts += 90 * sub->start_display_time;
819             else
820                 pkt.pts += 90 * sub->end_display_time;
821         }
822         write_frame(s, &pkt, ost);
823     }
824 }
825
826 static void do_video_out(AVFormatContext *s,
827                          OutputStream *ost,
828                          AVFrame *in_picture)
829 {
830     int ret, format_video_sync;
831     AVPacket pkt;
832     AVCodecContext *enc = ost->st->codec;
833     int nb_frames, i;
834     double sync_ipts, delta;
835     double duration = 0;
836     int frame_size = 0;
837     InputStream *ist = NULL;
838
839     if (ost->source_index >= 0)
840         ist = input_streams[ost->source_index];
841
842     if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
843         duration = 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base));
844
845     sync_ipts = in_picture->pts;
846     delta = sync_ipts - ost->sync_opts + duration;
847
848     /* by default, we output a single frame */
849     nb_frames = 1;
850
851     format_video_sync = video_sync_method;
852     if (format_video_sync == VSYNC_AUTO) {
853         if(!strcmp(s->oformat->name, "avi")) {
854             format_video_sync = VSYNC_VFR;
855         } else
856             format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : VSYNC_CFR;
857         if (   ist
858             && format_video_sync == VSYNC_CFR
859             && input_files[ist->file_index]->ctx->nb_streams == 1
860             && input_files[ist->file_index]->input_ts_offset == 0) {
861             format_video_sync = VSYNC_VSCFR;
862         }
863         if (format_video_sync == VSYNC_CFR && copy_ts) {
864             format_video_sync = VSYNC_VSCFR;
865         }
866     }
867
868     switch (format_video_sync) {
869     case VSYNC_VSCFR:
870         if (ost->frame_number == 0 && delta - duration >= 0.5) {
871             av_log(NULL, AV_LOG_DEBUG, "Not duplicating %d initial frames\n", (int)lrintf(delta - duration));
872             delta = duration;
873             ost->sync_opts = lrint(sync_ipts);
874         }
875     case VSYNC_CFR:
876         // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
877         if (delta < -1.1)
878             nb_frames = 0;
879         else if (delta > 1.1)
880             nb_frames = lrintf(delta);
881         break;
882     case VSYNC_VFR:
883         if (delta <= -0.6)
884             nb_frames = 0;
885         else if (delta > 0.6)
886             ost->sync_opts = lrint(sync_ipts);
887         break;
888     case VSYNC_DROP:
889     case VSYNC_PASSTHROUGH:
890         ost->sync_opts = lrint(sync_ipts);
891         break;
892     default:
893         av_assert0(0);
894     }
895
896     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
897     if (nb_frames == 0) {
898         nb_frames_drop++;
899         av_log(NULL, AV_LOG_VERBOSE,
900                "*** dropping frame %d from stream %d at ts %"PRId64"\n",
901                ost->frame_number, ost->st->index, in_picture->pts);
902         return;
903     } else if (nb_frames > 1) {
904         if (nb_frames > dts_error_threshold * 30) {
905             av_log(NULL, AV_LOG_ERROR, "%d frame duplication too large, skipping\n", nb_frames - 1);
906             nb_frames_drop++;
907             return;
908         }
909         nb_frames_dup += nb_frames - 1;
910         av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
911     }
912
913   /* duplicates frame if needed */
914   for (i = 0; i < nb_frames; i++) {
915     av_init_packet(&pkt);
916     pkt.data = NULL;
917     pkt.size = 0;
918
919     in_picture->pts = ost->sync_opts;
920
921 #if 1
922     if (!check_recording_time(ost))
923 #else
924     if (ost->frame_number >= ost->max_frames)
925 #endif
926         return;
927
928     if (s->oformat->flags & AVFMT_RAWPICTURE &&
929         enc->codec->id == AV_CODEC_ID_RAWVIDEO) {
930         /* raw pictures are written as AVPicture structure to
931            avoid any copies. We support temporarily the older
932            method. */
933         enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
934         enc->coded_frame->top_field_first  = in_picture->top_field_first;
935         if (enc->coded_frame->interlaced_frame)
936             enc->field_order = enc->coded_frame->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
937         else
938             enc->field_order = AV_FIELD_PROGRESSIVE;
939         pkt.data   = (uint8_t *)in_picture;
940         pkt.size   =  sizeof(AVPicture);
941         pkt.pts    = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
942         pkt.flags |= AV_PKT_FLAG_KEY;
943
944         write_frame(s, &pkt, ost);
945     } else {
946         int got_packet, forced_keyframe = 0;
947         double pts_time;
948
949         if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME) &&
950             ost->top_field_first >= 0)
951             in_picture->top_field_first = !!ost->top_field_first;
952
953         if (in_picture->interlaced_frame) {
954             if (enc->codec->id == AV_CODEC_ID_MJPEG)
955                 enc->field_order = in_picture->top_field_first ? AV_FIELD_TT:AV_FIELD_BB;
956             else
957                 enc->field_order = in_picture->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
958         } else
959             enc->field_order = AV_FIELD_PROGRESSIVE;
960
961         in_picture->quality = ost->st->codec->global_quality;
962         if (!enc->me_threshold)
963             in_picture->pict_type = 0;
964
965         pts_time = in_picture->pts != AV_NOPTS_VALUE ?
966             in_picture->pts * av_q2d(enc->time_base) : NAN;
967         if (ost->forced_kf_index < ost->forced_kf_count &&
968             in_picture->pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
969             ost->forced_kf_index++;
970             forced_keyframe = 1;
971         } else if (ost->forced_keyframes_pexpr) {
972             double res;
973             ost->forced_keyframes_expr_const_values[FKF_T] = pts_time;
974             res = av_expr_eval(ost->forced_keyframes_pexpr,
975                                ost->forced_keyframes_expr_const_values, NULL);
976             av_dlog(NULL, "force_key_frame: n:%f n_forced:%f prev_forced_n:%f t:%f prev_forced_t:%f -> res:%f\n",
977                     ost->forced_keyframes_expr_const_values[FKF_N],
978                     ost->forced_keyframes_expr_const_values[FKF_N_FORCED],
979                     ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N],
980                     ost->forced_keyframes_expr_const_values[FKF_T],
981                     ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T],
982                     res);
983             if (res) {
984                 forced_keyframe = 1;
985                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] =
986                     ost->forced_keyframes_expr_const_values[FKF_N];
987                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] =
988                     ost->forced_keyframes_expr_const_values[FKF_T];
989                 ost->forced_keyframes_expr_const_values[FKF_N_FORCED] += 1;
990             }
991
992             ost->forced_keyframes_expr_const_values[FKF_N] += 1;
993         }
994
995         if (forced_keyframe) {
996             in_picture->pict_type = AV_PICTURE_TYPE_I;
997             av_log(NULL, AV_LOG_DEBUG, "Forced keyframe at time %f\n", pts_time);
998         }
999
1000         update_benchmark(NULL);
1001         if (debug_ts) {
1002             av_log(NULL, AV_LOG_INFO, "encoder <- type:video "
1003                    "frame_pts:%s frame_pts_time:%s time_base:%d/%d\n",
1004                    av_ts2str(in_picture->pts), av_ts2timestr(in_picture->pts, &enc->time_base),
1005                    enc->time_base.num, enc->time_base.den);
1006         }
1007
1008         ost->frames_encoded++;
1009
1010         ret = avcodec_encode_video2(enc, &pkt, in_picture, &got_packet);
1011         update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
1012         if (ret < 0) {
1013             av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1014             exit_program(1);
1015         }
1016
1017         if (got_packet) {
1018             if (debug_ts) {
1019                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
1020                        "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
1021                        av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &enc->time_base),
1022                        av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &enc->time_base));
1023             }
1024
1025             if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
1026                 pkt.pts = ost->sync_opts;
1027
1028             if (pkt.pts != AV_NOPTS_VALUE)
1029                 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
1030             if (pkt.dts != AV_NOPTS_VALUE)
1031                 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
1032
1033             if (debug_ts) {
1034                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
1035                     "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
1036                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
1037                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
1038             }
1039
1040             frame_size = pkt.size;
1041             write_frame(s, &pkt, ost);
1042
1043             /* if two pass, output log */
1044             if (ost->logfile && enc->stats_out) {
1045                 fprintf(ost->logfile, "%s", enc->stats_out);
1046             }
1047         }
1048     }
1049     ost->sync_opts++;
1050     /*
1051      * For video, number of frames in == number of packets out.
1052      * But there may be reordering, so we can't throw away frames on encoder
1053      * flush, we need to limit them here, before they go into encoder.
1054      */
1055     ost->frame_number++;
1056
1057     if (vstats_filename && frame_size)
1058         do_video_stats(ost, frame_size);
1059   }
1060 }
1061
1062 static double psnr(double d)
1063 {
1064     return -10.0 * log(d) / log(10.0);
1065 }
1066
1067 static void do_video_stats(OutputStream *ost, int frame_size)
1068 {
1069     AVCodecContext *enc;
1070     int frame_number;
1071     double ti1, bitrate, avg_bitrate;
1072
1073     /* this is executed just the first time do_video_stats is called */
1074     if (!vstats_file) {
1075         vstats_file = fopen(vstats_filename, "w");
1076         if (!vstats_file) {
1077             perror("fopen");
1078             exit_program(1);
1079         }
1080     }
1081
1082     enc = ost->st->codec;
1083     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1084         frame_number = ost->st->nb_frames;
1085         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
1086         if (enc->flags&CODEC_FLAG_PSNR)
1087             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
1088
1089         fprintf(vstats_file,"f_size= %6d ", frame_size);
1090         /* compute pts value */
1091         ti1 = ost->st->pts.val * av_q2d(enc->time_base);
1092         if (ti1 < 0.01)
1093             ti1 = 0.01;
1094
1095         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1096         avg_bitrate = (double)(ost->data_size * 8) / ti1 / 1000.0;
1097         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1098                (double)ost->data_size / 1024, ti1, bitrate, avg_bitrate);
1099         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1100     }
1101 }
1102
1103 /**
1104  * Get and encode new output from any of the filtergraphs, without causing
1105  * activity.
1106  *
1107  * @return  0 for success, <0 for severe errors
1108  */
1109 static int reap_filters(void)
1110 {
1111     AVFrame *filtered_frame = NULL;
1112     int i;
1113     int64_t frame_pts;
1114
1115     /* Reap all buffers present in the buffer sinks */
1116     for (i = 0; i < nb_output_streams; i++) {
1117         OutputStream *ost = output_streams[i];
1118         OutputFile    *of = output_files[ost->file_index];
1119         AVFilterContext *filter;
1120         AVCodecContext *enc = ost->st->codec;
1121         int ret = 0;
1122
1123         if (!ost->filter)
1124             continue;
1125         filter = ost->filter->filter;
1126
1127         if (!ost->filtered_frame && !(ost->filtered_frame = av_frame_alloc())) {
1128             return AVERROR(ENOMEM);
1129         }
1130         filtered_frame = ost->filtered_frame;
1131
1132         while (1) {
1133             ret = av_buffersink_get_frame_flags(filter, filtered_frame,
1134                                                AV_BUFFERSINK_FLAG_NO_REQUEST);
1135             if (ret < 0) {
1136                 if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
1137                     av_log(NULL, AV_LOG_WARNING,
1138                            "Error in av_buffersink_get_frame_flags(): %s\n", av_err2str(ret));
1139                 }
1140                 break;
1141             }
1142             if (ost->finished) {
1143                 av_frame_unref(filtered_frame);
1144                 continue;
1145             }
1146             frame_pts = AV_NOPTS_VALUE;
1147             if (filtered_frame->pts != AV_NOPTS_VALUE) {
1148                 int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
1149                 filtered_frame->pts = frame_pts =
1150                     av_rescale_q(filtered_frame->pts, filter->inputs[0]->time_base, enc->time_base) -
1151                     av_rescale_q(start_time, AV_TIME_BASE_Q, enc->time_base);
1152             }
1153             //if (ost->source_index >= 0)
1154             //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
1155
1156             switch (filter->inputs[0]->type) {
1157             case AVMEDIA_TYPE_VIDEO:
1158                 filtered_frame->pts = frame_pts;
1159                 if (!ost->frame_aspect_ratio.num)
1160                     enc->sample_aspect_ratio = filtered_frame->sample_aspect_ratio;
1161
1162                 if (debug_ts) {
1163                     av_log(NULL, AV_LOG_INFO, "filter -> pts:%s pts_time:%s time_base:%d/%d\n",
1164                             av_ts2str(filtered_frame->pts), av_ts2timestr(filtered_frame->pts, &enc->time_base),
1165                             enc->time_base.num, enc->time_base.den);
1166                 }
1167
1168                 do_video_out(of->ctx, ost, filtered_frame);
1169                 break;
1170             case AVMEDIA_TYPE_AUDIO:
1171                 filtered_frame->pts = frame_pts;
1172                 if (!(enc->codec->capabilities & CODEC_CAP_PARAM_CHANGE) &&
1173                     enc->channels != av_frame_get_channels(filtered_frame)) {
1174                     av_log(NULL, AV_LOG_ERROR,
1175                            "Audio filter graph output is not normalized and encoder does not support parameter changes\n");
1176                     break;
1177                 }
1178                 do_audio_out(of->ctx, ost, filtered_frame);
1179                 break;
1180             default:
1181                 // TODO support subtitle filters
1182                 av_assert0(0);
1183             }
1184
1185             av_frame_unref(filtered_frame);
1186         }
1187     }
1188
1189     return 0;
1190 }
1191
1192 static void print_final_stats(int64_t total_size)
1193 {
1194     uint64_t video_size = 0, audio_size = 0, extra_size = 0, other_size = 0;
1195     uint64_t subtitle_size = 0;
1196     uint64_t data_size = 0;
1197     float percent = -1.0;
1198     int i, j;
1199
1200     for (i = 0; i < nb_output_streams; i++) {
1201         OutputStream *ost = output_streams[i];
1202         switch (ost->st->codec->codec_type) {
1203             case AVMEDIA_TYPE_VIDEO: video_size += ost->data_size; break;
1204             case AVMEDIA_TYPE_AUDIO: audio_size += ost->data_size; break;
1205             case AVMEDIA_TYPE_SUBTITLE: subtitle_size += ost->data_size; break;
1206             default:                 other_size += ost->data_size; break;
1207         }
1208         extra_size += ost->st->codec->extradata_size;
1209         data_size  += ost->data_size;
1210     }
1211
1212     if (data_size && total_size >= data_size)
1213         percent = 100.0 * (total_size - data_size) / data_size;
1214
1215     av_log(NULL, AV_LOG_INFO, "\n");
1216     av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB subtitle:%1.0fkB other streams:%1.0fkB global headers:%1.0fkB muxing overhead: ",
1217            video_size / 1024.0,
1218            audio_size / 1024.0,
1219            subtitle_size / 1024.0,
1220            other_size / 1024.0,
1221            extra_size / 1024.0);
1222     if (percent >= 0.0)
1223         av_log(NULL, AV_LOG_INFO, "%f%%", percent);
1224     else
1225         av_log(NULL, AV_LOG_INFO, "unknown");
1226     av_log(NULL, AV_LOG_INFO, "\n");
1227
1228     /* print verbose per-stream stats */
1229     for (i = 0; i < nb_input_files; i++) {
1230         InputFile *f = input_files[i];
1231         uint64_t total_packets = 0, total_size = 0;
1232
1233         av_log(NULL, AV_LOG_VERBOSE, "Input file #%d (%s):\n",
1234                i, f->ctx->filename);
1235
1236         for (j = 0; j < f->nb_streams; j++) {
1237             InputStream *ist = input_streams[f->ist_index + j];
1238             enum AVMediaType type = ist->st->codec->codec_type;
1239
1240             total_size    += ist->data_size;
1241             total_packets += ist->nb_packets;
1242
1243             av_log(NULL, AV_LOG_VERBOSE, "  Input stream #%d:%d (%s): ",
1244                    i, j, media_type_string(type));
1245             av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" packets read (%"PRIu64" bytes); ",
1246                    ist->nb_packets, ist->data_size);
1247
1248             if (ist->decoding_needed) {
1249                 av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" frames decoded",
1250                        ist->frames_decoded);
1251                 if (type == AVMEDIA_TYPE_AUDIO)
1252                     av_log(NULL, AV_LOG_VERBOSE, " (%"PRIu64" samples)", ist->samples_decoded);
1253                 av_log(NULL, AV_LOG_VERBOSE, "; ");
1254             }
1255
1256             av_log(NULL, AV_LOG_VERBOSE, "\n");
1257         }
1258
1259         av_log(NULL, AV_LOG_VERBOSE, "  Total: %"PRIu64" packets (%"PRIu64" bytes) demuxed\n",
1260                total_packets, total_size);
1261     }
1262
1263     for (i = 0; i < nb_output_files; i++) {
1264         OutputFile *of = output_files[i];
1265         uint64_t total_packets = 0, total_size = 0;
1266
1267         av_log(NULL, AV_LOG_VERBOSE, "Output file #%d (%s):\n",
1268                i, of->ctx->filename);
1269
1270         for (j = 0; j < of->ctx->nb_streams; j++) {
1271             OutputStream *ost = output_streams[of->ost_index + j];
1272             enum AVMediaType type = ost->st->codec->codec_type;
1273
1274             total_size    += ost->data_size;
1275             total_packets += ost->packets_written;
1276
1277             av_log(NULL, AV_LOG_VERBOSE, "  Output stream #%d:%d (%s): ",
1278                    i, j, media_type_string(type));
1279             if (ost->encoding_needed) {
1280                 av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" frames encoded",
1281                        ost->frames_encoded);
1282                 if (type == AVMEDIA_TYPE_AUDIO)
1283                     av_log(NULL, AV_LOG_VERBOSE, " (%"PRIu64" samples)", ost->samples_encoded);
1284                 av_log(NULL, AV_LOG_VERBOSE, "; ");
1285             }
1286
1287             av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" packets muxed (%"PRIu64" bytes); ",
1288                    ost->packets_written, ost->data_size);
1289
1290             av_log(NULL, AV_LOG_VERBOSE, "\n");
1291         }
1292
1293         av_log(NULL, AV_LOG_VERBOSE, "  Total: %"PRIu64" packets (%"PRIu64" bytes) muxed\n",
1294                total_packets, total_size);
1295     }
1296     if(video_size + data_size + audio_size + subtitle_size + extra_size == 0){
1297         av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
1298     }
1299 }
1300
1301 static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
1302 {
1303     char buf[1024];
1304     AVBPrint buf_script;
1305     OutputStream *ost;
1306     AVFormatContext *oc;
1307     int64_t total_size;
1308     AVCodecContext *enc;
1309     int frame_number, vid, i;
1310     double bitrate;
1311     int64_t pts = INT64_MIN;
1312     static int64_t last_time = -1;
1313     static int qp_histogram[52];
1314     int hours, mins, secs, us;
1315
1316     if (!print_stats && !is_last_report && !progress_avio)
1317         return;
1318
1319     if (!is_last_report) {
1320         if (last_time == -1) {
1321             last_time = cur_time;
1322             return;
1323         }
1324         if ((cur_time - last_time) < 500000)
1325             return;
1326         last_time = cur_time;
1327     }
1328
1329
1330     oc = output_files[0]->ctx;
1331
1332     total_size = avio_size(oc->pb);
1333     if (total_size <= 0) // FIXME improve avio_size() so it works with non seekable output too
1334         total_size = avio_tell(oc->pb);
1335
1336     buf[0] = '\0';
1337     vid = 0;
1338     av_bprint_init(&buf_script, 0, 1);
1339     for (i = 0; i < nb_output_streams; i++) {
1340         float q = -1;
1341         ost = output_streams[i];
1342         enc = ost->st->codec;
1343         if (!ost->stream_copy && enc->coded_frame)
1344             q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
1345         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1346             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1347             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1348                        ost->file_index, ost->index, q);
1349         }
1350         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1351             float fps, t = (cur_time-timer_start) / 1000000.0;
1352
1353             frame_number = ost->frame_number;
1354             fps = t > 1 ? frame_number / t : 0;
1355             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
1356                      frame_number, fps < 9.95, fps, q);
1357             av_bprintf(&buf_script, "frame=%d\n", frame_number);
1358             av_bprintf(&buf_script, "fps=%.1f\n", fps);
1359             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1360                        ost->file_index, ost->index, q);
1361             if (is_last_report)
1362                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1363             if (qp_hist) {
1364                 int j;
1365                 int qp = lrintf(q);
1366                 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
1367                     qp_histogram[qp]++;
1368                 for (j = 0; j < 32; j++)
1369                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log2(qp_histogram[j] + 1)));
1370             }
1371             if ((enc->flags&CODEC_FLAG_PSNR) && (enc->coded_frame || is_last_report)) {
1372                 int j;
1373                 double error, error_sum = 0;
1374                 double scale, scale_sum = 0;
1375                 double p;
1376                 char type[3] = { 'Y','U','V' };
1377                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1378                 for (j = 0; j < 3; j++) {
1379                     if (is_last_report) {
1380                         error = enc->error[j];
1381                         scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
1382                     } else {
1383                         error = enc->coded_frame->error[j];
1384                         scale = enc->width * enc->height * 255.0 * 255.0;
1385                     }
1386                     if (j)
1387                         scale /= 4;
1388                     error_sum += error;
1389                     scale_sum += scale;
1390                     p = psnr(error / scale);
1391                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], p);
1392                     av_bprintf(&buf_script, "stream_%d_%d_psnr_%c=%2.2f\n",
1393                                ost->file_index, ost->index, type[j] | 32, p);
1394                 }
1395                 p = psnr(error_sum / scale_sum);
1396                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
1397                 av_bprintf(&buf_script, "stream_%d_%d_psnr_all=%2.2f\n",
1398                            ost->file_index, ost->index, p);
1399             }
1400             vid = 1;
1401         }
1402         /* compute min output value */
1403         if (ost->st->pts.val != AV_NOPTS_VALUE)
1404             pts = FFMAX(pts, av_rescale_q(ost->st->pts.val,
1405                                           ost->st->time_base, AV_TIME_BASE_Q));
1406     }
1407
1408     secs = pts / AV_TIME_BASE;
1409     us = pts % AV_TIME_BASE;
1410     mins = secs / 60;
1411     secs %= 60;
1412     hours = mins / 60;
1413     mins %= 60;
1414
1415     bitrate = pts && total_size >= 0 ? total_size * 8 / (pts / 1000.0) : -1;
1416
1417     if (total_size < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1418                                  "size=N/A time=");
1419     else                snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1420                                  "size=%8.0fkB time=", total_size / 1024.0);
1421     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1422              "%02d:%02d:%02d.%02d ", hours, mins, secs,
1423              (100 * us) / AV_TIME_BASE);
1424     if (bitrate < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1425                               "bitrate=N/A");
1426     else             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1427                               "bitrate=%6.1fkbits/s", bitrate);
1428     if (total_size < 0) av_bprintf(&buf_script, "total_size=N/A\n");
1429     else                av_bprintf(&buf_script, "total_size=%"PRId64"\n", total_size);
1430     av_bprintf(&buf_script, "out_time_ms=%"PRId64"\n", pts);
1431     av_bprintf(&buf_script, "out_time=%02d:%02d:%02d.%06d\n",
1432                hours, mins, secs, us);
1433
1434     if (nb_frames_dup || nb_frames_drop)
1435         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1436                 nb_frames_dup, nb_frames_drop);
1437     av_bprintf(&buf_script, "dup_frames=%d\n", nb_frames_dup);
1438     av_bprintf(&buf_script, "drop_frames=%d\n", nb_frames_drop);
1439
1440     if (print_stats || is_last_report) {
1441         if (print_stats==1 && AV_LOG_INFO > av_log_get_level()) {
1442             fprintf(stderr, "%s    \r", buf);
1443         } else
1444             av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
1445
1446     fflush(stderr);
1447     }
1448
1449     if (progress_avio) {
1450         av_bprintf(&buf_script, "progress=%s\n",
1451                    is_last_report ? "end" : "continue");
1452         avio_write(progress_avio, buf_script.str,
1453                    FFMIN(buf_script.len, buf_script.size - 1));
1454         avio_flush(progress_avio);
1455         av_bprint_finalize(&buf_script, NULL);
1456         if (is_last_report) {
1457             avio_close(progress_avio);
1458             progress_avio = NULL;
1459         }
1460     }
1461
1462     if (is_last_report)
1463         print_final_stats(total_size);
1464 }
1465
1466 static void flush_encoders(void)
1467 {
1468     int i, ret;
1469
1470     for (i = 0; i < nb_output_streams; i++) {
1471         OutputStream   *ost = output_streams[i];
1472         AVCodecContext *enc = ost->st->codec;
1473         AVFormatContext *os = output_files[ost->file_index]->ctx;
1474         int stop_encoding = 0;
1475
1476         if (!ost->encoding_needed)
1477             continue;
1478
1479         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
1480             continue;
1481         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == AV_CODEC_ID_RAWVIDEO)
1482             continue;
1483
1484         for (;;) {
1485             int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
1486             const char *desc;
1487
1488             switch (ost->st->codec->codec_type) {
1489             case AVMEDIA_TYPE_AUDIO:
1490                 encode = avcodec_encode_audio2;
1491                 desc   = "Audio";
1492                 break;
1493             case AVMEDIA_TYPE_VIDEO:
1494                 encode = avcodec_encode_video2;
1495                 desc   = "Video";
1496                 break;
1497             default:
1498                 stop_encoding = 1;
1499             }
1500
1501             if (encode) {
1502                 AVPacket pkt;
1503                 int pkt_size;
1504                 int got_packet;
1505                 av_init_packet(&pkt);
1506                 pkt.data = NULL;
1507                 pkt.size = 0;
1508
1509                 update_benchmark(NULL);
1510                 ret = encode(enc, &pkt, NULL, &got_packet);
1511                 update_benchmark("flush %s %d.%d", desc, ost->file_index, ost->index);
1512                 if (ret < 0) {
1513                     av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
1514                     exit_program(1);
1515                 }
1516                 if (ost->logfile && enc->stats_out) {
1517                     fprintf(ost->logfile, "%s", enc->stats_out);
1518                 }
1519                 if (!got_packet) {
1520                     stop_encoding = 1;
1521                     break;
1522                 }
1523                 if (ost->finished & MUXER_FINISHED) {
1524                     av_free_packet(&pkt);
1525                     continue;
1526                 }
1527                 if (pkt.pts != AV_NOPTS_VALUE)
1528                     pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
1529                 if (pkt.dts != AV_NOPTS_VALUE)
1530                     pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
1531                 if (pkt.duration > 0)
1532                     pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
1533                 pkt_size = pkt.size;
1534                 write_frame(os, &pkt, ost);
1535                 if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && vstats_filename) {
1536                     do_video_stats(ost, pkt_size);
1537                 }
1538             }
1539
1540             if (stop_encoding)
1541                 break;
1542         }
1543     }
1544 }
1545
1546 /*
1547  * Check whether a packet from ist should be written into ost at this time
1548  */
1549 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1550 {
1551     OutputFile *of = output_files[ost->file_index];
1552     int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
1553
1554     if (ost->source_index != ist_index)
1555         return 0;
1556
1557     if (ost->finished)
1558         return 0;
1559
1560     if (of->start_time != AV_NOPTS_VALUE && ist->pts < of->start_time)
1561         return 0;
1562
1563     return 1;
1564 }
1565
1566 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1567 {
1568     OutputFile *of = output_files[ost->file_index];
1569     InputFile   *f = input_files [ist->file_index];
1570     int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
1571     int64_t ost_tb_start_time = av_rescale_q(start_time, AV_TIME_BASE_Q, ost->st->time_base);
1572     int64_t ist_tb_start_time = av_rescale_q(start_time, AV_TIME_BASE_Q, ist->st->time_base);
1573     AVPicture pict;
1574     AVPacket opkt;
1575
1576     av_init_packet(&opkt);
1577
1578     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1579         !ost->copy_initial_nonkeyframes)
1580         return;
1581
1582     if (pkt->pts == AV_NOPTS_VALUE) {
1583         if (!ost->frame_number && ist->pts < start_time &&
1584             !ost->copy_prior_start)
1585             return;
1586     } else {
1587         if (!ost->frame_number && pkt->pts < ist_tb_start_time &&
1588             !ost->copy_prior_start)
1589             return;
1590     }
1591
1592     if (of->recording_time != INT64_MAX &&
1593         ist->pts >= of->recording_time + start_time) {
1594         close_output_stream(ost);
1595         return;
1596     }
1597
1598     if (f->recording_time != INT64_MAX) {
1599         start_time = f->ctx->start_time;
1600         if (f->start_time != AV_NOPTS_VALUE)
1601             start_time += f->start_time;
1602         if (ist->pts >= f->recording_time + start_time) {
1603             close_output_stream(ost);
1604             return;
1605         }
1606     }
1607
1608     /* force the input stream PTS */
1609     if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
1610         ost->sync_opts++;
1611
1612     if (pkt->pts != AV_NOPTS_VALUE)
1613         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1614     else
1615         opkt.pts = AV_NOPTS_VALUE;
1616
1617     if (pkt->dts == AV_NOPTS_VALUE)
1618         opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
1619     else
1620         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1621     opkt.dts -= ost_tb_start_time;
1622
1623     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && pkt->dts != AV_NOPTS_VALUE) {
1624         int duration = av_get_audio_frame_duration(ist->st->codec, pkt->size);
1625         if(!duration)
1626             duration = ist->st->codec->frame_size;
1627         opkt.dts = opkt.pts = av_rescale_delta(ist->st->time_base, pkt->dts,
1628                                                (AVRational){1, ist->st->codec->sample_rate}, duration, &ist->filter_in_rescale_delta_last,
1629                                                ost->st->time_base) - ost_tb_start_time;
1630     }
1631
1632     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1633     opkt.flags    = pkt->flags;
1634
1635     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1636     if (  ost->st->codec->codec_id != AV_CODEC_ID_H264
1637        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG1VIDEO
1638        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG2VIDEO
1639        && ost->st->codec->codec_id != AV_CODEC_ID_VC1
1640        ) {
1641         if (av_parser_change(ost->parser, ost->st->codec,
1642                              &opkt.data, &opkt.size,
1643                              pkt->data, pkt->size,
1644                              pkt->flags & AV_PKT_FLAG_KEY)) {
1645             opkt.buf = av_buffer_create(opkt.data, opkt.size, av_buffer_default_free, NULL, 0);
1646             if (!opkt.buf)
1647                 exit_program(1);
1648         }
1649     } else {
1650         opkt.data = pkt->data;
1651         opkt.size = pkt->size;
1652     }
1653     av_copy_packet_side_data(&opkt, pkt);
1654
1655     if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (of->ctx->oformat->flags & AVFMT_RAWPICTURE)) {
1656         /* store AVPicture in AVPacket, as expected by the output format */
1657         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1658         opkt.data = (uint8_t *)&pict;
1659         opkt.size = sizeof(AVPicture);
1660         opkt.flags |= AV_PKT_FLAG_KEY;
1661     }
1662
1663     write_frame(of->ctx, &opkt, ost);
1664     ost->st->codec->frame_number++;
1665 }
1666
1667 int guess_input_channel_layout(InputStream *ist)
1668 {
1669     AVCodecContext *dec = ist->st->codec;
1670
1671     if (!dec->channel_layout) {
1672         char layout_name[256];
1673
1674         if (dec->channels > ist->guess_layout_max)
1675             return 0;
1676         dec->channel_layout = av_get_default_channel_layout(dec->channels);
1677         if (!dec->channel_layout)
1678             return 0;
1679         av_get_channel_layout_string(layout_name, sizeof(layout_name),
1680                                      dec->channels, dec->channel_layout);
1681         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for  Input Stream "
1682                "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
1683     }
1684     return 1;
1685 }
1686
1687 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1688 {
1689     AVFrame *decoded_frame, *f;
1690     AVCodecContext *avctx = ist->st->codec;
1691     int i, ret, err = 0, resample_changed;
1692     AVRational decoded_frame_tb;
1693
1694     if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
1695         return AVERROR(ENOMEM);
1696     if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1697         return AVERROR(ENOMEM);
1698     decoded_frame = ist->decoded_frame;
1699
1700     update_benchmark(NULL);
1701     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1702     update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
1703
1704     if (ret >= 0 && avctx->sample_rate <= 0) {
1705         av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
1706         ret = AVERROR_INVALIDDATA;
1707     }
1708
1709     if (*got_output || ret<0 || pkt->size)
1710         decode_error_stat[ret<0] ++;
1711
1712     if (!*got_output || ret < 0) {
1713         if (!pkt->size) {
1714             for (i = 0; i < ist->nb_filters; i++)
1715 #if 1
1716                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1717 #else
1718                 av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
1719 #endif
1720         }
1721         return ret;
1722     }
1723
1724     ist->samples_decoded += decoded_frame->nb_samples;
1725     ist->frames_decoded++;
1726
1727 #if 1
1728     /* increment next_dts to use for the case where the input stream does not
1729        have timestamps or there are multiple frames in the packet */
1730     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1731                      avctx->sample_rate;
1732     ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1733                      avctx->sample_rate;
1734 #endif
1735
1736     resample_changed = ist->resample_sample_fmt     != decoded_frame->format         ||
1737                        ist->resample_channels       != avctx->channels               ||
1738                        ist->resample_channel_layout != decoded_frame->channel_layout ||
1739                        ist->resample_sample_rate    != decoded_frame->sample_rate;
1740     if (resample_changed) {
1741         char layout1[64], layout2[64];
1742
1743         if (!guess_input_channel_layout(ist)) {
1744             av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
1745                    "layout for Input Stream #%d.%d\n", ist->file_index,
1746                    ist->st->index);
1747             exit_program(1);
1748         }
1749         decoded_frame->channel_layout = avctx->channel_layout;
1750
1751         av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
1752                                      ist->resample_channel_layout);
1753         av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
1754                                      decoded_frame->channel_layout);
1755
1756         av_log(NULL, AV_LOG_INFO,
1757                "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",
1758                ist->file_index, ist->st->index,
1759                ist->resample_sample_rate,  av_get_sample_fmt_name(ist->resample_sample_fmt),
1760                ist->resample_channels, layout1,
1761                decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
1762                avctx->channels, layout2);
1763
1764         ist->resample_sample_fmt     = decoded_frame->format;
1765         ist->resample_sample_rate    = decoded_frame->sample_rate;
1766         ist->resample_channel_layout = decoded_frame->channel_layout;
1767         ist->resample_channels       = avctx->channels;
1768
1769         for (i = 0; i < nb_filtergraphs; i++)
1770             if (ist_in_filtergraph(filtergraphs[i], ist)) {
1771                 FilterGraph *fg = filtergraphs[i];
1772                 int j;
1773                 if (configure_filtergraph(fg) < 0) {
1774                     av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1775                     exit_program(1);
1776                 }
1777                 for (j = 0; j < fg->nb_outputs; j++) {
1778                     OutputStream *ost = fg->outputs[j]->ost;
1779                     if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
1780                         !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
1781                         av_buffersink_set_frame_size(ost->filter->filter,
1782                                                      ost->st->codec->frame_size);
1783                 }
1784             }
1785     }
1786
1787     /* if the decoder provides a pts, use it instead of the last packet pts.
1788        the decoder could be delaying output by a packet or more. */
1789     if (decoded_frame->pts != AV_NOPTS_VALUE) {
1790         ist->dts = ist->next_dts = ist->pts = ist->next_pts = av_rescale_q(decoded_frame->pts, avctx->time_base, AV_TIME_BASE_Q);
1791         decoded_frame_tb   = avctx->time_base;
1792     } else if (decoded_frame->pkt_pts != AV_NOPTS_VALUE) {
1793         decoded_frame->pts = decoded_frame->pkt_pts;
1794         pkt->pts           = AV_NOPTS_VALUE;
1795         decoded_frame_tb   = ist->st->time_base;
1796     } else if (pkt->pts != AV_NOPTS_VALUE) {
1797         decoded_frame->pts = pkt->pts;
1798         pkt->pts           = AV_NOPTS_VALUE;
1799         decoded_frame_tb   = ist->st->time_base;
1800     }else {
1801         decoded_frame->pts = ist->dts;
1802         decoded_frame_tb   = AV_TIME_BASE_Q;
1803     }
1804     if (decoded_frame->pts != AV_NOPTS_VALUE)
1805         decoded_frame->pts = av_rescale_delta(decoded_frame_tb, decoded_frame->pts,
1806                                               (AVRational){1, ist->st->codec->sample_rate}, decoded_frame->nb_samples, &ist->filter_in_rescale_delta_last,
1807                                               (AVRational){1, ist->st->codec->sample_rate});
1808     for (i = 0; i < ist->nb_filters; i++) {
1809         if (i < ist->nb_filters - 1) {
1810             f = ist->filter_frame;
1811             err = av_frame_ref(f, decoded_frame);
1812             if (err < 0)
1813                 break;
1814         } else
1815             f = decoded_frame;
1816         err = av_buffersrc_add_frame_flags(ist->filters[i]->filter, f,
1817                                      AV_BUFFERSRC_FLAG_PUSH);
1818         if (err == AVERROR_EOF)
1819             err = 0; /* ignore */
1820         if (err < 0)
1821             break;
1822     }
1823     decoded_frame->pts = AV_NOPTS_VALUE;
1824
1825     av_frame_unref(ist->filter_frame);
1826     av_frame_unref(decoded_frame);
1827     return err < 0 ? err : ret;
1828 }
1829
1830 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
1831 {
1832     AVFrame *decoded_frame, *f;
1833     int i, ret = 0, err = 0, resample_changed;
1834     int64_t best_effort_timestamp;
1835     AVRational *frame_sample_aspect;
1836
1837     if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
1838         return AVERROR(ENOMEM);
1839     if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1840         return AVERROR(ENOMEM);
1841     decoded_frame = ist->decoded_frame;
1842     pkt->dts  = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
1843
1844     update_benchmark(NULL);
1845     ret = avcodec_decode_video2(ist->st->codec,
1846                                 decoded_frame, got_output, pkt);
1847     update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
1848
1849     if (*got_output || ret<0 || pkt->size)
1850         decode_error_stat[ret<0] ++;
1851
1852     if (!*got_output || ret < 0) {
1853         if (!pkt->size) {
1854             for (i = 0; i < ist->nb_filters; i++)
1855 #if 1
1856                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1857 #else
1858                 av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
1859 #endif
1860         }
1861         return ret;
1862     }
1863
1864     if(ist->top_field_first>=0)
1865         decoded_frame->top_field_first = ist->top_field_first;
1866
1867     ist->frames_decoded++;
1868
1869     if (ist->hwaccel_retrieve_data && decoded_frame->format == ist->hwaccel_pix_fmt) {
1870         err = ist->hwaccel_retrieve_data(ist->st->codec, decoded_frame);
1871         if (err < 0)
1872             goto fail;
1873     }
1874     ist->hwaccel_retrieved_pix_fmt = decoded_frame->format;
1875
1876     best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
1877     if(best_effort_timestamp != AV_NOPTS_VALUE)
1878         ist->next_pts = ist->pts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);
1879
1880     if (debug_ts) {
1881         av_log(NULL, AV_LOG_INFO, "decoder -> ist_index:%d type:video "
1882                "frame_pts:%s frame_pts_time:%s best_effort_ts:%"PRId64" best_effort_ts_time:%s keyframe:%d frame_type:%d time_base:%d/%d\n",
1883                ist->st->index, av_ts2str(decoded_frame->pts),
1884                av_ts2timestr(decoded_frame->pts, &ist->st->time_base),
1885                best_effort_timestamp,
1886                av_ts2timestr(best_effort_timestamp, &ist->st->time_base),
1887                decoded_frame->key_frame, decoded_frame->pict_type,
1888                ist->st->time_base.num, ist->st->time_base.den);
1889     }
1890
1891     pkt->size = 0;
1892
1893     if (ist->st->sample_aspect_ratio.num)
1894         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1895
1896     resample_changed = ist->resample_width   != decoded_frame->width  ||
1897                        ist->resample_height  != decoded_frame->height ||
1898                        ist->resample_pix_fmt != decoded_frame->format;
1899     if (resample_changed) {
1900         av_log(NULL, AV_LOG_INFO,
1901                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1902                ist->file_index, ist->st->index,
1903                ist->resample_width,  ist->resample_height,  av_get_pix_fmt_name(ist->resample_pix_fmt),
1904                decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
1905
1906         ist->resample_width   = decoded_frame->width;
1907         ist->resample_height  = decoded_frame->height;
1908         ist->resample_pix_fmt = decoded_frame->format;
1909
1910         for (i = 0; i < nb_filtergraphs; i++) {
1911             if (ist_in_filtergraph(filtergraphs[i], ist) && ist->reinit_filters &&
1912                 configure_filtergraph(filtergraphs[i]) < 0) {
1913                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1914                 exit_program(1);
1915             }
1916         }
1917     }
1918
1919     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
1920     for (i = 0; i < ist->nb_filters; i++) {
1921         if (!frame_sample_aspect->num)
1922             *frame_sample_aspect = ist->st->sample_aspect_ratio;
1923
1924         if (i < ist->nb_filters - 1) {
1925             f = ist->filter_frame;
1926             err = av_frame_ref(f, decoded_frame);
1927             if (err < 0)
1928                 break;
1929         } else
1930             f = decoded_frame;
1931         ret = av_buffersrc_add_frame_flags(ist->filters[i]->filter, f, AV_BUFFERSRC_FLAG_PUSH);
1932         if (ret == AVERROR_EOF) {
1933             ret = 0; /* ignore */
1934         } else if (ret < 0) {
1935             av_log(NULL, AV_LOG_FATAL,
1936                    "Failed to inject frame into filter network: %s\n", av_err2str(ret));
1937             exit_program(1);
1938         }
1939     }
1940
1941 fail:
1942     av_frame_unref(ist->filter_frame);
1943     av_frame_unref(decoded_frame);
1944     return err < 0 ? err : ret;
1945 }
1946
1947 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1948 {
1949     AVSubtitle subtitle;
1950     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
1951                                           &subtitle, got_output, pkt);
1952
1953     if (*got_output || ret<0 || pkt->size)
1954         decode_error_stat[ret<0] ++;
1955
1956     if (ret < 0 || !*got_output) {
1957         if (!pkt->size)
1958             sub2video_flush(ist);
1959         return ret;
1960     }
1961
1962     if (ist->fix_sub_duration) {
1963         int end = 1;
1964         if (ist->prev_sub.got_output) {
1965             end = av_rescale(subtitle.pts - ist->prev_sub.subtitle.pts,
1966                              1000, AV_TIME_BASE);
1967             if (end < ist->prev_sub.subtitle.end_display_time) {
1968                 av_log(ist->st->codec, AV_LOG_DEBUG,
1969                        "Subtitle duration reduced from %d to %d%s\n",
1970                        ist->prev_sub.subtitle.end_display_time, end,
1971                        end <= 0 ? ", dropping it" : "");
1972                 ist->prev_sub.subtitle.end_display_time = end;
1973             }
1974         }
1975         FFSWAP(int,        *got_output, ist->prev_sub.got_output);
1976         FFSWAP(int,        ret,         ist->prev_sub.ret);
1977         FFSWAP(AVSubtitle, subtitle,    ist->prev_sub.subtitle);
1978         if (end <= 0)
1979             goto out;
1980     }
1981
1982     if (!*got_output)
1983         return ret;
1984
1985     sub2video_update(ist, &subtitle);
1986
1987     if (!subtitle.num_rects)
1988         goto out;
1989
1990     ist->frames_decoded++;
1991
1992     for (i = 0; i < nb_output_streams; i++) {
1993         OutputStream *ost = output_streams[i];
1994
1995         if (!check_output_constraints(ist, ost) || !ost->encoding_needed
1996             || ost->enc->type != AVMEDIA_TYPE_SUBTITLE)
1997             continue;
1998
1999         do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle);
2000     }
2001
2002 out:
2003     avsubtitle_free(&subtitle);
2004     return ret;
2005 }
2006
2007 /* pkt = NULL means EOF (needed to flush decoder buffers) */
2008 static int output_packet(InputStream *ist, const AVPacket *pkt)
2009 {
2010     int ret = 0, i;
2011     int got_output = 0;
2012
2013     AVPacket avpkt;
2014     if (!ist->saw_first_ts) {
2015         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;
2016         ist->pts = 0;
2017         if (pkt != NULL && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
2018             ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
2019             ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
2020         }
2021         ist->saw_first_ts = 1;
2022     }
2023
2024     if (ist->next_dts == AV_NOPTS_VALUE)
2025         ist->next_dts = ist->dts;
2026     if (ist->next_pts == AV_NOPTS_VALUE)
2027         ist->next_pts = ist->pts;
2028
2029     if (pkt == NULL) {
2030         /* EOF handling */
2031         av_init_packet(&avpkt);
2032         avpkt.data = NULL;
2033         avpkt.size = 0;
2034         goto handle_eof;
2035     } else {
2036         avpkt = *pkt;
2037     }
2038
2039     if (pkt->dts != AV_NOPTS_VALUE) {
2040         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2041         if (ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
2042             ist->next_pts = ist->pts = ist->dts;
2043     }
2044
2045     // while we have more to decode or while the decoder did output something on EOF
2046     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
2047         int duration;
2048     handle_eof:
2049
2050         ist->pts = ist->next_pts;
2051         ist->dts = ist->next_dts;
2052
2053         if (avpkt.size && avpkt.size != pkt->size &&
2054             !(ist->dec->capabilities & CODEC_CAP_SUBFRAMES)) {
2055             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
2056                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
2057             ist->showed_multi_packet_warning = 1;
2058         }
2059
2060         switch (ist->st->codec->codec_type) {
2061         case AVMEDIA_TYPE_AUDIO:
2062             ret = decode_audio    (ist, &avpkt, &got_output);
2063             break;
2064         case AVMEDIA_TYPE_VIDEO:
2065             ret = decode_video    (ist, &avpkt, &got_output);
2066             if (avpkt.duration) {
2067                 duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
2068             } else if(ist->st->codec->time_base.num != 0 && ist->st->codec->time_base.den != 0) {
2069                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
2070                 duration = ((int64_t)AV_TIME_BASE *
2071                                 ist->st->codec->time_base.num * ticks) /
2072                                 ist->st->codec->time_base.den;
2073             } else
2074                 duration = 0;
2075
2076             if(ist->dts != AV_NOPTS_VALUE && duration) {
2077                 ist->next_dts += duration;
2078             }else
2079                 ist->next_dts = AV_NOPTS_VALUE;
2080
2081             if (got_output)
2082                 ist->next_pts += duration; //FIXME the duration is not correct in some cases
2083             break;
2084         case AVMEDIA_TYPE_SUBTITLE:
2085             ret = transcode_subtitles(ist, &avpkt, &got_output);
2086             break;
2087         default:
2088             return -1;
2089         }
2090
2091         if (ret < 0)
2092             return ret;
2093
2094         avpkt.dts=
2095         avpkt.pts= AV_NOPTS_VALUE;
2096
2097         // touch data and size only if not EOF
2098         if (pkt) {
2099             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
2100                 ret = avpkt.size;
2101             avpkt.data += ret;
2102             avpkt.size -= ret;
2103         }
2104         if (!got_output) {
2105             continue;
2106         }
2107     }
2108
2109     /* handle stream copy */
2110     if (!ist->decoding_needed) {
2111         ist->dts = ist->next_dts;
2112         switch (ist->st->codec->codec_type) {
2113         case AVMEDIA_TYPE_AUDIO:
2114             ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
2115                              ist->st->codec->sample_rate;
2116             break;
2117         case AVMEDIA_TYPE_VIDEO:
2118             if (ist->framerate.num) {
2119                 // TODO: Remove work-around for c99-to-c89 issue 7
2120                 AVRational time_base_q = AV_TIME_BASE_Q;
2121                 int64_t next_dts = av_rescale_q(ist->next_dts, time_base_q, av_inv_q(ist->framerate));
2122                 ist->next_dts = av_rescale_q(next_dts + 1, av_inv_q(ist->framerate), time_base_q);
2123             } else if (pkt->duration) {
2124                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
2125             } else if(ist->st->codec->time_base.num != 0) {
2126                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
2127                 ist->next_dts += ((int64_t)AV_TIME_BASE *
2128                                   ist->st->codec->time_base.num * ticks) /
2129                                   ist->st->codec->time_base.den;
2130             }
2131             break;
2132         }
2133         ist->pts = ist->dts;
2134         ist->next_pts = ist->next_dts;
2135     }
2136     for (i = 0; pkt && i < nb_output_streams; i++) {
2137         OutputStream *ost = output_streams[i];
2138
2139         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
2140             continue;
2141
2142         do_streamcopy(ist, ost, pkt);
2143     }
2144
2145     return 0;
2146 }
2147
2148 static void print_sdp(void)
2149 {
2150     char sdp[16384];
2151     int i;
2152     AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
2153
2154     if (!avc)
2155         exit_program(1);
2156     for (i = 0; i < nb_output_files; i++)
2157         avc[i] = output_files[i]->ctx;
2158
2159     av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
2160     printf("SDP:\n%s\n", sdp);
2161     fflush(stdout);
2162     av_freep(&avc);
2163 }
2164
2165 static const HWAccel *get_hwaccel(enum AVPixelFormat pix_fmt)
2166 {
2167     int i;
2168     for (i = 0; hwaccels[i].name; i++)
2169         if (hwaccels[i].pix_fmt == pix_fmt)
2170             return &hwaccels[i];
2171     return NULL;
2172 }
2173
2174 static enum AVPixelFormat get_format(AVCodecContext *s, const enum AVPixelFormat *pix_fmts)
2175 {
2176     InputStream *ist = s->opaque;
2177     const enum AVPixelFormat *p;
2178     int ret;
2179
2180     for (p = pix_fmts; *p != -1; p++) {
2181         const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(*p);
2182         const HWAccel *hwaccel;
2183
2184         if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL))
2185             break;
2186
2187         hwaccel = get_hwaccel(*p);
2188         if (!hwaccel ||
2189             (ist->active_hwaccel_id && ist->active_hwaccel_id != hwaccel->id) ||
2190             (ist->hwaccel_id != HWACCEL_AUTO && ist->hwaccel_id != hwaccel->id))
2191             continue;
2192
2193         ret = hwaccel->init(s);
2194         if (ret < 0) {
2195             if (ist->hwaccel_id == hwaccel->id) {
2196                 av_log(NULL, AV_LOG_FATAL,
2197                        "%s hwaccel requested for input stream #%d:%d, "
2198                        "but cannot be initialized.\n", hwaccel->name,
2199                        ist->file_index, ist->st->index);
2200                 exit_program(1);
2201             }
2202             continue;
2203         }
2204         ist->active_hwaccel_id = hwaccel->id;
2205         ist->hwaccel_pix_fmt   = *p;
2206         break;
2207     }
2208
2209     return *p;
2210 }
2211
2212 static int get_buffer(AVCodecContext *s, AVFrame *frame, int flags)
2213 {
2214     InputStream *ist = s->opaque;
2215
2216     if (ist->hwaccel_get_buffer && frame->format == ist->hwaccel_pix_fmt)
2217         return ist->hwaccel_get_buffer(s, frame, flags);
2218
2219     return avcodec_default_get_buffer2(s, frame, flags);
2220 }
2221
2222 static int init_input_stream(int ist_index, char *error, int error_len)
2223 {
2224     int ret;
2225     InputStream *ist = input_streams[ist_index];
2226
2227     if (ist->decoding_needed) {
2228         AVCodec *codec = ist->dec;
2229         if (!codec) {
2230             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
2231                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
2232             return AVERROR(EINVAL);
2233         }
2234
2235         ist->st->codec->opaque      = ist;
2236         ist->st->codec->get_format  = get_format;
2237         ist->st->codec->get_buffer2 = get_buffer;
2238         ist->st->codec->thread_safe_callbacks = 1;
2239
2240         av_opt_set_int(ist->st->codec, "refcounted_frames", 1, 0);
2241
2242         if (!av_dict_get(ist->opts, "threads", NULL, 0))
2243             av_dict_set(&ist->opts, "threads", "auto", 0);
2244         if ((ret = avcodec_open2(ist->st->codec, codec, &ist->opts)) < 0) {
2245             if (ret == AVERROR_EXPERIMENTAL)
2246                 abort_codec_experimental(codec, 0);
2247
2248             snprintf(error, error_len,
2249                      "Error while opening decoder for input stream "
2250                      "#%d:%d : %s",
2251                      ist->file_index, ist->st->index, av_err2str(ret));
2252             return ret;
2253         }
2254         assert_avoptions(ist->opts);
2255     }
2256
2257     ist->next_pts = AV_NOPTS_VALUE;
2258     ist->next_dts = AV_NOPTS_VALUE;
2259
2260     return 0;
2261 }
2262
2263 static InputStream *get_input_stream(OutputStream *ost)
2264 {
2265     if (ost->source_index >= 0)
2266         return input_streams[ost->source_index];
2267     return NULL;
2268 }
2269
2270 static int compare_int64(const void *a, const void *b)
2271 {
2272     int64_t va = *(int64_t *)a, vb = *(int64_t *)b;
2273     return va < vb ? -1 : va > vb ? +1 : 0;
2274 }
2275
2276 static void parse_forced_key_frames(char *kf, OutputStream *ost,
2277                                     AVCodecContext *avctx)
2278 {
2279     char *p;
2280     int n = 1, i, size, index = 0;
2281     int64_t t, *pts;
2282
2283     for (p = kf; *p; p++)
2284         if (*p == ',')
2285             n++;
2286     size = n;
2287     pts = av_malloc(sizeof(*pts) * size);
2288     if (!pts) {
2289         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
2290         exit_program(1);
2291     }
2292
2293     p = kf;
2294     for (i = 0; i < n; i++) {
2295         char *next = strchr(p, ',');
2296
2297         if (next)
2298             *next++ = 0;
2299
2300         if (!memcmp(p, "chapters", 8)) {
2301
2302             AVFormatContext *avf = output_files[ost->file_index]->ctx;
2303             int j;
2304
2305             if (avf->nb_chapters > INT_MAX - size ||
2306                 !(pts = av_realloc_f(pts, size += avf->nb_chapters - 1,
2307                                      sizeof(*pts)))) {
2308                 av_log(NULL, AV_LOG_FATAL,
2309                        "Could not allocate forced key frames array.\n");
2310                 exit_program(1);
2311             }
2312             t = p[8] ? parse_time_or_die("force_key_frames", p + 8, 1) : 0;
2313             t = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
2314
2315             for (j = 0; j < avf->nb_chapters; j++) {
2316                 AVChapter *c = avf->chapters[j];
2317                 av_assert1(index < size);
2318                 pts[index++] = av_rescale_q(c->start, c->time_base,
2319                                             avctx->time_base) + t;
2320             }
2321
2322         } else {
2323
2324             t = parse_time_or_die("force_key_frames", p, 1);
2325             av_assert1(index < size);
2326             pts[index++] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
2327
2328         }
2329
2330         p = next;
2331     }
2332
2333     av_assert0(index == size);
2334     qsort(pts, size, sizeof(*pts), compare_int64);
2335     ost->forced_kf_count = size;
2336     ost->forced_kf_pts   = pts;
2337 }
2338
2339 static void report_new_stream(int input_index, AVPacket *pkt)
2340 {
2341     InputFile *file = input_files[input_index];
2342     AVStream *st = file->ctx->streams[pkt->stream_index];
2343
2344     if (pkt->stream_index < file->nb_streams_warn)
2345         return;
2346     av_log(file->ctx, AV_LOG_WARNING,
2347            "New %s stream %d:%d at pos:%"PRId64" and DTS:%ss\n",
2348            av_get_media_type_string(st->codec->codec_type),
2349            input_index, pkt->stream_index,
2350            pkt->pos, av_ts2timestr(pkt->dts, &st->time_base));
2351     file->nb_streams_warn = pkt->stream_index + 1;
2352 }
2353
2354 static int transcode_init(void)
2355 {
2356     int ret = 0, i, j, k;
2357     AVFormatContext *oc;
2358     AVCodecContext *codec;
2359     OutputStream *ost;
2360     InputStream *ist;
2361     char error[1024];
2362     int want_sdp = 1;
2363
2364     for (i = 0; i < nb_filtergraphs; i++) {
2365         FilterGraph *fg = filtergraphs[i];
2366         for (j = 0; j < fg->nb_outputs; j++) {
2367             OutputFilter *ofilter = fg->outputs[j];
2368             if (!ofilter->ost || ofilter->ost->source_index >= 0)
2369                 continue;
2370             if (fg->nb_inputs != 1)
2371                 continue;
2372             for (k = nb_input_streams-1; k >= 0 ; k--)
2373                 if (fg->inputs[0]->ist == input_streams[k])
2374                     break;
2375             ofilter->ost->source_index = k;
2376         }
2377     }
2378
2379     /* init framerate emulation */
2380     for (i = 0; i < nb_input_files; i++) {
2381         InputFile *ifile = input_files[i];
2382         if (ifile->rate_emu)
2383             for (j = 0; j < ifile->nb_streams; j++)
2384                 input_streams[j + ifile->ist_index]->start = av_gettime();
2385     }
2386
2387     /* output stream init */
2388     for (i = 0; i < nb_output_files; i++) {
2389         oc = output_files[i]->ctx;
2390         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2391             av_dump_format(oc, i, oc->filename, 1);
2392             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2393             return AVERROR(EINVAL);
2394         }
2395     }
2396
2397     /* init complex filtergraphs */
2398     for (i = 0; i < nb_filtergraphs; i++)
2399         if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
2400             return ret;
2401
2402     /* for each output stream, we compute the right encoding parameters */
2403     for (i = 0; i < nb_output_streams; i++) {
2404         AVCodecContext *icodec = NULL;
2405         ost = output_streams[i];
2406         oc  = output_files[ost->file_index]->ctx;
2407         ist = get_input_stream(ost);
2408
2409         if (ost->attachment_filename)
2410             continue;
2411
2412         codec  = ost->st->codec;
2413
2414         if (ist) {
2415             icodec = ist->st->codec;
2416
2417             ost->st->disposition          = ist->st->disposition;
2418             codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
2419             codec->chroma_sample_location = icodec->chroma_sample_location;
2420         } else {
2421             for (j=0; j<oc->nb_streams; j++) {
2422                 AVStream *st = oc->streams[j];
2423                 if (st != ost->st && st->codec->codec_type == codec->codec_type)
2424                     break;
2425             }
2426             if (j == oc->nb_streams)
2427                 if (codec->codec_type == AVMEDIA_TYPE_AUDIO || codec->codec_type == AVMEDIA_TYPE_VIDEO)
2428                     ost->st->disposition = AV_DISPOSITION_DEFAULT;
2429         }
2430
2431         if (ost->stream_copy) {
2432             AVRational sar;
2433             uint64_t extra_size;
2434
2435             av_assert0(ist && !ost->filter);
2436
2437             extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2438
2439             if (extra_size > INT_MAX) {
2440                 return AVERROR(EINVAL);
2441             }
2442
2443             /* if stream_copy is selected, no need to decode or encode */
2444             codec->codec_id   = icodec->codec_id;
2445             codec->codec_type = icodec->codec_type;
2446
2447             if (!codec->codec_tag) {
2448                 unsigned int codec_tag;
2449                 if (!oc->oformat->codec_tag ||
2450                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2451                      !av_codec_get_tag2(oc->oformat->codec_tag, icodec->codec_id, &codec_tag))
2452                     codec->codec_tag = icodec->codec_tag;
2453             }
2454
2455             codec->bit_rate       = icodec->bit_rate;
2456             codec->rc_max_rate    = icodec->rc_max_rate;
2457             codec->rc_buffer_size = icodec->rc_buffer_size;
2458             codec->field_order    = icodec->field_order;
2459             codec->extradata      = av_mallocz(extra_size);
2460             if (!codec->extradata) {
2461                 return AVERROR(ENOMEM);
2462             }
2463             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2464             codec->extradata_size= icodec->extradata_size;
2465             codec->bits_per_coded_sample  = icodec->bits_per_coded_sample;
2466
2467             codec->time_base = ist->st->time_base;
2468             /*
2469              * Avi is a special case here because it supports variable fps but
2470              * having the fps and timebase differe significantly adds quite some
2471              * overhead
2472              */
2473             if(!strcmp(oc->oformat->name, "avi")) {
2474                 if ( copy_tb<0 && av_q2d(ist->st->r_frame_rate) >= av_q2d(ist->st->avg_frame_rate)
2475                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(ist->st->time_base)
2476                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(icodec->time_base)
2477                                && av_q2d(ist->st->time_base) < 1.0/500 && av_q2d(icodec->time_base) < 1.0/500
2478                      || copy_tb==2){
2479                     codec->time_base.num = ist->st->r_frame_rate.den;
2480                     codec->time_base.den = 2*ist->st->r_frame_rate.num;
2481                     codec->ticks_per_frame = 2;
2482                 } else if (   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2483                                  && av_q2d(ist->st->time_base) < 1.0/500
2484                     || copy_tb==0){
2485                     codec->time_base = icodec->time_base;
2486                     codec->time_base.num *= icodec->ticks_per_frame;
2487                     codec->time_base.den *= 2;
2488                     codec->ticks_per_frame = 2;
2489                 }
2490             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2491                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2492                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2493                       && strcmp(oc->oformat->name, "f4v")
2494             ) {
2495                 if(   copy_tb<0 && icodec->time_base.den
2496                                 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
2497                                 && av_q2d(ist->st->time_base) < 1.0/500
2498                    || copy_tb==0){
2499                     codec->time_base = icodec->time_base;
2500                     codec->time_base.num *= icodec->ticks_per_frame;
2501                 }
2502             }
2503             if (   codec->codec_tag == AV_RL32("tmcd")
2504                 && icodec->time_base.num < icodec->time_base.den
2505                 && icodec->time_base.num > 0
2506                 && 121LL*icodec->time_base.num > icodec->time_base.den) {
2507                 codec->time_base = icodec->time_base;
2508             }
2509
2510             if (ist && !ost->frame_rate.num)
2511                 ost->frame_rate = ist->framerate;
2512             if(ost->frame_rate.num)
2513                 codec->time_base = av_inv_q(ost->frame_rate);
2514
2515             av_reduce(&codec->time_base.num, &codec->time_base.den,
2516                         codec->time_base.num, codec->time_base.den, INT_MAX);
2517
2518             ost->parser = av_parser_init(codec->codec_id);
2519
2520             switch (codec->codec_type) {
2521             case AVMEDIA_TYPE_AUDIO:
2522                 if (audio_volume != 256) {
2523                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2524                     exit_program(1);
2525                 }
2526                 codec->channel_layout     = icodec->channel_layout;
2527                 codec->sample_rate        = icodec->sample_rate;
2528                 codec->channels           = icodec->channels;
2529                 codec->frame_size         = icodec->frame_size;
2530                 codec->audio_service_type = icodec->audio_service_type;
2531                 codec->block_align        = icodec->block_align;
2532                 codec->delay              = icodec->delay;
2533                 if((codec->block_align == 1 || codec->block_align == 1152 || codec->block_align == 576) && codec->codec_id == AV_CODEC_ID_MP3)
2534                     codec->block_align= 0;
2535                 if(codec->codec_id == AV_CODEC_ID_AC3)
2536                     codec->block_align= 0;
2537                 break;
2538             case AVMEDIA_TYPE_VIDEO:
2539                 codec->pix_fmt            = icodec->pix_fmt;
2540                 codec->width              = icodec->width;
2541                 codec->height             = icodec->height;
2542                 codec->has_b_frames       = icodec->has_b_frames;
2543                 if (ost->frame_aspect_ratio.num) { // overridden by the -aspect cli option
2544                     sar =
2545                         av_mul_q(ost->frame_aspect_ratio,
2546                                  (AVRational){ codec->height, codec->width });
2547                     av_log(NULL, AV_LOG_WARNING, "Overriding aspect ratio "
2548                            "with stream copy may produce invalid files\n");
2549                 }
2550                 else if (ist->st->sample_aspect_ratio.num)
2551                     sar = ist->st->sample_aspect_ratio;
2552                 else
2553                     sar = icodec->sample_aspect_ratio;
2554                 ost->st->sample_aspect_ratio = codec->sample_aspect_ratio = sar;
2555                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2556                 break;
2557             case AVMEDIA_TYPE_SUBTITLE:
2558                 codec->width  = icodec->width;
2559                 codec->height = icodec->height;
2560                 break;
2561             case AVMEDIA_TYPE_DATA:
2562             case AVMEDIA_TYPE_ATTACHMENT:
2563                 break;
2564             default:
2565                 abort();
2566             }
2567         } else {
2568             if (!ost->enc)
2569                 ost->enc = avcodec_find_encoder(codec->codec_id);
2570             if (!ost->enc) {
2571                 /* should only happen when a default codec is not present. */
2572                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
2573                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2574                 ret = AVERROR(EINVAL);
2575                 goto dump_format;
2576             }
2577
2578             if (ist)
2579                 ist->decoding_needed++;
2580             ost->encoding_needed = 1;
2581
2582             if (!ost->filter &&
2583                 (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2584                  codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
2585                     FilterGraph *fg;
2586                     fg = init_simple_filtergraph(ist, ost);
2587                     if (configure_filtergraph(fg)) {
2588                         av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2589                         exit_program(1);
2590                     }
2591             }
2592
2593             if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2594                 if (ost->filter && !ost->frame_rate.num)
2595                     ost->frame_rate = av_buffersink_get_frame_rate(ost->filter->filter);
2596                 if (ist && !ost->frame_rate.num)
2597                     ost->frame_rate = ist->framerate;
2598                 if (ist && !ost->frame_rate.num)
2599                     ost->frame_rate = ist->st->r_frame_rate;
2600                 if (ist && !ost->frame_rate.num) {
2601                     ost->frame_rate = (AVRational){25, 1};
2602                     av_log(NULL, AV_LOG_WARNING,
2603                            "No information "
2604                            "about the input framerate is available. Falling "
2605                            "back to a default value of 25fps for output stream #%d:%d. Use the -r option "
2606                            "if you want a different framerate.\n",
2607                            ost->file_index, ost->index);
2608                 }
2609 //                    ost->frame_rate = ist->st->avg_frame_rate.num ? ist->st->avg_frame_rate : (AVRational){25, 1};
2610                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2611                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2612                     ost->frame_rate = ost->enc->supported_framerates[idx];
2613                 }
2614                 if (codec->codec_id == AV_CODEC_ID_MPEG4) {
2615                     av_reduce(&ost->frame_rate.num, &ost->frame_rate.den,
2616                               ost->frame_rate.num, ost->frame_rate.den, 65535);
2617                 }
2618             }
2619
2620             switch (codec->codec_type) {
2621             case AVMEDIA_TYPE_AUDIO:
2622                 codec->sample_fmt     = ost->filter->filter->inputs[0]->format;
2623                 codec->sample_rate    = ost->filter->filter->inputs[0]->sample_rate;
2624                 codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
2625                 codec->channels       = avfilter_link_get_channels(ost->filter->filter->inputs[0]);
2626                 codec->time_base      = (AVRational){ 1, codec->sample_rate };
2627                 break;
2628             case AVMEDIA_TYPE_VIDEO:
2629                 codec->time_base = av_inv_q(ost->frame_rate);
2630                 if (ost->filter && !(codec->time_base.num && codec->time_base.den))
2631                     codec->time_base = ost->filter->filter->inputs[0]->time_base;
2632                 if (   av_q2d(codec->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
2633                    && (video_sync_method == VSYNC_CFR || video_sync_method == VSYNC_VSCFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
2634                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
2635                                                "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
2636                 }
2637                 for (j = 0; j < ost->forced_kf_count; j++)
2638                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2639                                                          AV_TIME_BASE_Q,
2640                                                          codec->time_base);
2641
2642                 codec->width  = ost->filter->filter->inputs[0]->w;
2643                 codec->height = ost->filter->filter->inputs[0]->h;
2644                 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
2645                     ost->frame_aspect_ratio.num ? // overridden by the -aspect cli option
2646                     av_mul_q(ost->frame_aspect_ratio, (AVRational){ codec->height, codec->width }) :
2647                     ost->filter->filter->inputs[0]->sample_aspect_ratio;
2648                 if (!strncmp(ost->enc->name, "libx264", 7) &&
2649                     codec->pix_fmt == AV_PIX_FMT_NONE &&
2650                     ost->filter->filter->inputs[0]->format != AV_PIX_FMT_YUV420P)
2651                     av_log(NULL, AV_LOG_WARNING,
2652                            "No pixel format specified, %s for H.264 encoding chosen.\n"
2653                            "Use -pix_fmt yuv420p for compatibility with outdated media players.\n",
2654                            av_get_pix_fmt_name(ost->filter->filter->inputs[0]->format));
2655                 if (!strncmp(ost->enc->name, "mpeg2video", 10) &&
2656                     codec->pix_fmt == AV_PIX_FMT_NONE &&
2657                     ost->filter->filter->inputs[0]->format != AV_PIX_FMT_YUV420P)
2658                     av_log(NULL, AV_LOG_WARNING,
2659                            "No pixel format specified, %s for MPEG-2 encoding chosen.\n"
2660                            "Use -pix_fmt yuv420p for compatibility with outdated media players.\n",
2661                            av_get_pix_fmt_name(ost->filter->filter->inputs[0]->format));
2662                 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
2663
2664                 if (!icodec ||
2665                     codec->width   != icodec->width  ||
2666                     codec->height  != icodec->height ||
2667                     codec->pix_fmt != icodec->pix_fmt) {
2668                     codec->bits_per_raw_sample = frame_bits_per_raw_sample;
2669                 }
2670
2671                 if (ost->forced_keyframes) {
2672                     if (!strncmp(ost->forced_keyframes, "expr:", 5)) {
2673                         ret = av_expr_parse(&ost->forced_keyframes_pexpr, ost->forced_keyframes+5,
2674                                             forced_keyframes_const_names, NULL, NULL, NULL, NULL, 0, NULL);
2675                         if (ret < 0) {
2676                             av_log(NULL, AV_LOG_ERROR,
2677                                    "Invalid force_key_frames expression '%s'\n", ost->forced_keyframes+5);
2678                             return ret;
2679                         }
2680                         ost->forced_keyframes_expr_const_values[FKF_N] = 0;
2681                         ost->forced_keyframes_expr_const_values[FKF_N_FORCED] = 0;
2682                         ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] = NAN;
2683                         ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] = NAN;
2684                     } else {
2685                         parse_forced_key_frames(ost->forced_keyframes, ost, ost->st->codec);
2686                     }
2687                 }
2688                 break;
2689             case AVMEDIA_TYPE_SUBTITLE:
2690                 codec->time_base = (AVRational){1, 1000};
2691                 if (!codec->width) {
2692                     codec->width     = input_streams[ost->source_index]->st->codec->width;
2693                     codec->height    = input_streams[ost->source_index]->st->codec->height;
2694                 }
2695                 break;
2696             default:
2697                 abort();
2698                 break;
2699             }
2700             /* two pass mode */
2701             if (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
2702                 char logfilename[1024];
2703                 FILE *f;
2704
2705                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2706                          ost->logfile_prefix ? ost->logfile_prefix :
2707                                                DEFAULT_PASS_LOGFILENAME_PREFIX,
2708                          i);
2709                 if (!strcmp(ost->enc->name, "libx264")) {
2710                     av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
2711                 } else {
2712                     if (codec->flags & CODEC_FLAG_PASS2) {
2713                         char  *logbuffer;
2714                         size_t logbuffer_size;
2715                         if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2716                             av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2717                                    logfilename);
2718                             exit_program(1);
2719                         }
2720                         codec->stats_in = logbuffer;
2721                     }
2722                     if (codec->flags & CODEC_FLAG_PASS1) {
2723                         f = av_fopen_utf8(logfilename, "wb");
2724                         if (!f) {
2725                             av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2726                                 logfilename, strerror(errno));
2727                             exit_program(1);
2728                         }
2729                         ost->logfile = f;
2730                     }
2731                 }
2732             }
2733         }
2734     }
2735
2736     /* open each encoder */
2737     for (i = 0; i < nb_output_streams; i++) {
2738         ost = output_streams[i];
2739         if (ost->encoding_needed) {
2740             AVCodec      *codec = ost->enc;
2741             AVCodecContext *dec = NULL;
2742
2743             if ((ist = get_input_stream(ost)))
2744                 dec = ist->st->codec;
2745             if (dec && dec->subtitle_header) {
2746                 /* ASS code assumes this buffer is null terminated so add extra byte. */
2747                 ost->st->codec->subtitle_header = av_mallocz(dec->subtitle_header_size + 1);
2748                 if (!ost->st->codec->subtitle_header) {
2749                     ret = AVERROR(ENOMEM);
2750                     goto dump_format;
2751                 }
2752                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2753                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2754             }
2755             if (!av_dict_get(ost->opts, "threads", NULL, 0))
2756                 av_dict_set(&ost->opts, "threads", "auto", 0);
2757             if ((ret = avcodec_open2(ost->st->codec, codec, &ost->opts)) < 0) {
2758                 if (ret == AVERROR_EXPERIMENTAL)
2759                     abort_codec_experimental(codec, 1);
2760                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2761                         ost->file_index, ost->index);
2762                 goto dump_format;
2763             }
2764             if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
2765                 !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
2766                 av_buffersink_set_frame_size(ost->filter->filter,
2767                                              ost->st->codec->frame_size);
2768             assert_avoptions(ost->opts);
2769             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2770                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2771                                              " It takes bits/s as argument, not kbits/s\n");
2772         } else {
2773             av_opt_set_dict(ost->st->codec, &ost->opts);
2774         }
2775     }
2776
2777     /* init input streams */
2778     for (i = 0; i < nb_input_streams; i++)
2779         if ((ret = init_input_stream(i, error, sizeof(error))) < 0) {
2780             for (i = 0; i < nb_output_streams; i++) {
2781                 ost = output_streams[i];
2782                 avcodec_close(ost->st->codec);
2783             }
2784             goto dump_format;
2785         }
2786
2787     /* discard unused programs */
2788     for (i = 0; i < nb_input_files; i++) {
2789         InputFile *ifile = input_files[i];
2790         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2791             AVProgram *p = ifile->ctx->programs[j];
2792             int discard  = AVDISCARD_ALL;
2793
2794             for (k = 0; k < p->nb_stream_indexes; k++)
2795                 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
2796                     discard = AVDISCARD_DEFAULT;
2797                     break;
2798                 }
2799             p->discard = discard;
2800         }
2801     }
2802
2803     /* open files and write file headers */
2804     for (i = 0; i < nb_output_files; i++) {
2805         oc = output_files[i]->ctx;
2806         oc->interrupt_callback = int_cb;
2807         if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
2808             snprintf(error, sizeof(error),
2809                      "Could not write header for output file #%d "
2810                      "(incorrect codec parameters ?): %s",
2811                      i, av_err2str(ret));
2812             ret = AVERROR(EINVAL);
2813             goto dump_format;
2814         }
2815 //         assert_avoptions(output_files[i]->opts);
2816         if (strcmp(oc->oformat->name, "rtp")) {
2817             want_sdp = 0;
2818         }
2819     }
2820
2821  dump_format:
2822     /* dump the file output parameters - cannot be done before in case
2823        of stream copy */
2824     for (i = 0; i < nb_output_files; i++) {
2825         av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
2826     }
2827
2828     /* dump the stream mapping */
2829     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2830     for (i = 0; i < nb_input_streams; i++) {
2831         ist = input_streams[i];
2832
2833         for (j = 0; j < ist->nb_filters; j++) {
2834             if (ist->filters[j]->graph->graph_desc) {
2835                 av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
2836                        ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
2837                        ist->filters[j]->name);
2838                 if (nb_filtergraphs > 1)
2839                     av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
2840                 av_log(NULL, AV_LOG_INFO, "\n");
2841             }
2842         }
2843     }
2844
2845     for (i = 0; i < nb_output_streams; i++) {
2846         ost = output_streams[i];
2847
2848         if (ost->attachment_filename) {
2849             /* an attached file */
2850             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
2851                    ost->attachment_filename, ost->file_index, ost->index);
2852             continue;
2853         }
2854
2855         if (ost->filter && ost->filter->graph->graph_desc) {
2856             /* output from a complex graph */
2857             av_log(NULL, AV_LOG_INFO, "  %s", ost->filter->name);
2858             if (nb_filtergraphs > 1)
2859                 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
2860
2861             av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
2862                    ost->index, ost->enc ? ost->enc->name : "?");
2863             continue;
2864         }
2865
2866         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
2867                input_streams[ost->source_index]->file_index,
2868                input_streams[ost->source_index]->st->index,
2869                ost->file_index,
2870                ost->index);
2871         if (ost->sync_ist != input_streams[ost->source_index])
2872             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2873                    ost->sync_ist->file_index,
2874                    ost->sync_ist->st->index);
2875         if (ost->stream_copy)
2876             av_log(NULL, AV_LOG_INFO, " (copy)");
2877         else
2878             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
2879                    input_streams[ost->source_index]->dec->name : "?",
2880                    ost->enc ? ost->enc->name : "?");
2881         av_log(NULL, AV_LOG_INFO, "\n");
2882     }
2883
2884     if (ret) {
2885         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2886         return ret;
2887     }
2888
2889     if (want_sdp) {
2890         print_sdp();
2891     }
2892
2893     transcode_init_done = 1;
2894
2895     return 0;
2896 }
2897
2898 /* Return 1 if there remain streams where more output is wanted, 0 otherwise. */
2899 static int need_output(void)
2900 {
2901     int i;
2902
2903     for (i = 0; i < nb_output_streams; i++) {
2904         OutputStream *ost    = output_streams[i];
2905         OutputFile *of       = output_files[ost->file_index];
2906         AVFormatContext *os  = output_files[ost->file_index]->ctx;
2907
2908         if (ost->finished ||
2909             (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2910             continue;
2911         if (ost->frame_number >= ost->max_frames) {
2912             int j;
2913             for (j = 0; j < of->ctx->nb_streams; j++)
2914                 close_output_stream(output_streams[of->ost_index + j]);
2915             continue;
2916         }
2917
2918         return 1;
2919     }
2920
2921     return 0;
2922 }
2923
2924 /**
2925  * Select the output stream to process.
2926  *
2927  * @return  selected output stream, or NULL if none available
2928  */
2929 static OutputStream *choose_output(void)
2930 {
2931     int i;
2932     int64_t opts_min = INT64_MAX;
2933     OutputStream *ost_min = NULL;
2934
2935     for (i = 0; i < nb_output_streams; i++) {
2936         OutputStream *ost = output_streams[i];
2937         int64_t opts = av_rescale_q(ost->st->cur_dts, ost->st->time_base,
2938                                     AV_TIME_BASE_Q);
2939         if (!ost->unavailable && !ost->finished && opts < opts_min) {
2940             opts_min = opts;
2941             ost_min  = ost;
2942         }
2943     }
2944     return ost_min;
2945 }
2946
2947 static int check_keyboard_interaction(int64_t cur_time)
2948 {
2949     int i, ret, key;
2950     static int64_t last_time;
2951     if (received_nb_signals)
2952         return AVERROR_EXIT;
2953     /* read_key() returns 0 on EOF */
2954     if(cur_time - last_time >= 100000 && !run_as_daemon){
2955         key =  read_key();
2956         last_time = cur_time;
2957     }else
2958         key = -1;
2959     if (key == 'q')
2960         return AVERROR_EXIT;
2961     if (key == '+') av_log_set_level(av_log_get_level()+10);
2962     if (key == '-') av_log_set_level(av_log_get_level()-10);
2963     if (key == 's') qp_hist     ^= 1;
2964     if (key == 'h'){
2965         if (do_hex_dump){
2966             do_hex_dump = do_pkt_dump = 0;
2967         } else if(do_pkt_dump){
2968             do_hex_dump = 1;
2969         } else
2970             do_pkt_dump = 1;
2971         av_log_set_level(AV_LOG_DEBUG);
2972     }
2973     if (key == 'c' || key == 'C'){
2974         char buf[4096], target[64], command[256], arg[256] = {0};
2975         double time;
2976         int k, n = 0;
2977         fprintf(stderr, "\nEnter command: <target>|all <time>|-1 <command>[ <argument>]\n");
2978         i = 0;
2979         while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
2980             if (k > 0)
2981                 buf[i++] = k;
2982         buf[i] = 0;
2983         if (k > 0 &&
2984             (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
2985             av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
2986                    target, time, command, arg);
2987             for (i = 0; i < nb_filtergraphs; i++) {
2988                 FilterGraph *fg = filtergraphs[i];
2989                 if (fg->graph) {
2990                     if (time < 0) {
2991                         ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
2992                                                           key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
2993                         fprintf(stderr, "Command reply for stream %d: ret:%d res:\n%s", i, ret, buf);
2994                     } else if (key == 'c') {
2995                         fprintf(stderr, "Queing commands only on filters supporting the specific command is unsupported\n");
2996                         ret = AVERROR_PATCHWELCOME;
2997                     } else {
2998                         ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
2999                     }
3000                 }
3001             }
3002         } else {
3003             av_log(NULL, AV_LOG_ERROR,
3004                    "Parse error, at least 3 arguments were expected, "
3005                    "only %d given in string '%s'\n", n, buf);
3006         }
3007     }
3008     if (key == 'd' || key == 'D'){
3009         int debug=0;
3010         if(key == 'D') {
3011             debug = input_streams[0]->st->codec->debug<<1;
3012             if(!debug) debug = 1;
3013             while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
3014                 debug += debug;
3015         }else
3016             if(scanf("%d", &debug)!=1)
3017                 fprintf(stderr,"error parsing debug value\n");
3018         for(i=0;i<nb_input_streams;i++) {
3019             input_streams[i]->st->codec->debug = debug;
3020         }
3021         for(i=0;i<nb_output_streams;i++) {
3022             OutputStream *ost = output_streams[i];
3023             ost->st->codec->debug = debug;
3024         }
3025         if(debug) av_log_set_level(AV_LOG_DEBUG);
3026         fprintf(stderr,"debug=%d\n", debug);
3027     }
3028     if (key == '?'){
3029         fprintf(stderr, "key    function\n"
3030                         "?      show this help\n"
3031                         "+      increase verbosity\n"
3032                         "-      decrease verbosity\n"
3033                         "c      Send command to first matching filter supporting it\n"
3034                         "C      Send/Que command to all matching filters\n"
3035                         "D      cycle through available debug modes\n"
3036                         "h      dump packets/hex press to cycle through the 3 states\n"
3037                         "q      quit\n"
3038                         "s      Show QP histogram\n"
3039         );
3040     }
3041     return 0;
3042 }
3043
3044 #if HAVE_PTHREADS
3045 static void *input_thread(void *arg)
3046 {
3047     InputFile *f = arg;
3048     int ret = 0;
3049
3050     while (!transcoding_finished && ret >= 0) {
3051         AVPacket pkt;
3052         ret = av_read_frame(f->ctx, &pkt);
3053
3054         if (ret == AVERROR(EAGAIN)) {
3055             av_usleep(10000);
3056             ret = 0;
3057             continue;
3058         } else if (ret < 0)
3059             break;
3060
3061         pthread_mutex_lock(&f->fifo_lock);
3062         while (!av_fifo_space(f->fifo))
3063             pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
3064
3065         av_dup_packet(&pkt);
3066         av_fifo_generic_write(f->fifo, &pkt, sizeof(pkt), NULL);
3067         pthread_cond_signal(&f->fifo_cond);
3068
3069         pthread_mutex_unlock(&f->fifo_lock);
3070     }
3071
3072     pthread_mutex_lock(&f->fifo_lock);
3073     f->finished = 1;
3074     pthread_cond_signal(&f->fifo_cond);
3075     pthread_mutex_unlock(&f->fifo_lock);
3076     return NULL;
3077 }
3078
3079 static void free_input_threads(void)
3080 {
3081     int i;
3082
3083     if (nb_input_files == 1)
3084         return;
3085
3086     transcoding_finished = 1;
3087
3088     for (i = 0; i < nb_input_files; i++) {
3089         InputFile *f = input_files[i];
3090         AVPacket pkt;
3091
3092         if (!f->fifo || f->joined)
3093             continue;
3094
3095         pthread_mutex_lock(&f->fifo_lock);
3096         while (av_fifo_size(f->fifo)) {
3097             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
3098             av_free_packet(&pkt);
3099         }
3100         pthread_cond_signal(&f->fifo_cond);
3101         pthread_mutex_unlock(&f->fifo_lock);
3102
3103         pthread_join(f->thread, NULL);
3104         f->joined = 1;
3105
3106         while (av_fifo_size(f->fifo)) {
3107             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
3108             av_free_packet(&pkt);
3109         }
3110         av_fifo_free(f->fifo);
3111     }
3112 }
3113
3114 static int init_input_threads(void)
3115 {
3116     int i, ret;
3117
3118     if (nb_input_files == 1)
3119         return 0;
3120
3121     for (i = 0; i < nb_input_files; i++) {
3122         InputFile *f = input_files[i];
3123
3124         if (!(f->fifo = av_fifo_alloc(8*sizeof(AVPacket))))
3125             return AVERROR(ENOMEM);
3126
3127         if (f->ctx->pb ? !f->ctx->pb->seekable :
3128             strcmp(f->ctx->iformat->name, "lavfi"))
3129             f->non_blocking = 1;
3130
3131         pthread_mutex_init(&f->fifo_lock, NULL);
3132         pthread_cond_init (&f->fifo_cond, NULL);
3133
3134         if ((ret = pthread_create(&f->thread, NULL, input_thread, f)))
3135             return AVERROR(ret);
3136     }
3137     return 0;
3138 }
3139
3140 static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
3141 {
3142     int ret = 0;
3143
3144     pthread_mutex_lock(&f->fifo_lock);
3145
3146     while (1) {
3147     if (av_fifo_size(f->fifo)) {
3148         av_fifo_generic_read(f->fifo, pkt, sizeof(*pkt), NULL);
3149         pthread_cond_signal(&f->fifo_cond);
3150         break;
3151     } else {
3152         if (f->finished) {
3153             ret = AVERROR_EOF;
3154             break;
3155         }
3156         if (f->non_blocking) {
3157             ret = AVERROR(EAGAIN);
3158             break;
3159         }
3160         pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
3161     }
3162     }
3163
3164     pthread_mutex_unlock(&f->fifo_lock);
3165
3166     return ret;
3167 }
3168 #endif
3169
3170 static int get_input_packet(InputFile *f, AVPacket *pkt)
3171 {
3172     if (f->rate_emu) {
3173         int i;
3174         for (i = 0; i < f->nb_streams; i++) {
3175             InputStream *ist = input_streams[f->ist_index + i];
3176             int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
3177             int64_t now = av_gettime() - ist->start;
3178             if (pts > now)
3179                 return AVERROR(EAGAIN);
3180         }
3181     }
3182
3183 #if HAVE_PTHREADS
3184     if (nb_input_files > 1)
3185         return get_input_packet_mt(f, pkt);
3186 #endif
3187     return av_read_frame(f->ctx, pkt);
3188 }
3189
3190 static int got_eagain(void)
3191 {
3192     int i;
3193     for (i = 0; i < nb_output_streams; i++)
3194         if (output_streams[i]->unavailable)
3195             return 1;
3196     return 0;
3197 }
3198
3199 static void reset_eagain(void)
3200 {
3201     int i;
3202     for (i = 0; i < nb_input_files; i++)
3203         input_files[i]->eagain = 0;
3204     for (i = 0; i < nb_output_streams; i++)
3205         output_streams[i]->unavailable = 0;
3206 }
3207
3208 /*
3209  * Return
3210  * - 0 -- one packet was read and processed
3211  * - AVERROR(EAGAIN) -- no packets were available for selected file,
3212  *   this function should be called again
3213  * - AVERROR_EOF -- this function should not be called again
3214  */
3215 static int process_input(int file_index)
3216 {
3217     InputFile *ifile = input_files[file_index];
3218     AVFormatContext *is;
3219     InputStream *ist;
3220     AVPacket pkt;
3221     int ret, i, j;
3222
3223     is  = ifile->ctx;
3224     ret = get_input_packet(ifile, &pkt);
3225
3226     if (ret == AVERROR(EAGAIN)) {
3227         ifile->eagain = 1;
3228         return ret;
3229     }
3230     if (ret < 0) {
3231         if (ret != AVERROR_EOF) {
3232             print_error(is->filename, ret);
3233             if (exit_on_error)
3234                 exit_program(1);
3235         }
3236         ifile->eof_reached = 1;
3237
3238         for (i = 0; i < ifile->nb_streams; i++) {
3239             ist = input_streams[ifile->ist_index + i];
3240             if (ist->decoding_needed)
3241                 output_packet(ist, NULL);
3242
3243             /* mark all outputs that don't go through lavfi as finished */
3244             for (j = 0; j < nb_output_streams; j++) {
3245                 OutputStream *ost = output_streams[j];
3246
3247                 if (ost->source_index == ifile->ist_index + i &&
3248                     (ost->stream_copy || ost->enc->type == AVMEDIA_TYPE_SUBTITLE))
3249                     close_output_stream(ost);
3250             }
3251         }
3252
3253         return AVERROR(EAGAIN);
3254     }
3255
3256     reset_eagain();
3257
3258     if (do_pkt_dump) {
3259         av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
3260                          is->streams[pkt.stream_index]);
3261     }
3262     /* the following test is needed in case new streams appear
3263        dynamically in stream : we ignore them */
3264     if (pkt.stream_index >= ifile->nb_streams) {
3265         report_new_stream(file_index, &pkt);
3266         goto discard_packet;
3267     }
3268
3269     ist = input_streams[ifile->ist_index + pkt.stream_index];
3270
3271     ist->data_size += pkt.size;
3272     ist->nb_packets++;
3273
3274     if (ist->discard)
3275         goto discard_packet;
3276
3277     if (debug_ts) {
3278         av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
3279                "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",
3280                ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
3281                av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &AV_TIME_BASE_Q),
3282                av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &AV_TIME_BASE_Q),
3283                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
3284                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
3285                av_ts2str(input_files[ist->file_index]->ts_offset),
3286                av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
3287     }
3288
3289     if(!ist->wrap_correction_done && is->start_time != AV_NOPTS_VALUE && ist->st->pts_wrap_bits < 64){
3290         int64_t stime, stime2;
3291         // Correcting starttime based on the enabled streams
3292         // 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.
3293         //       so we instead do it here as part of discontinuity handling
3294         if (   ist->next_dts == AV_NOPTS_VALUE
3295             && ifile->ts_offset == -is->start_time
3296             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
3297             int64_t new_start_time = INT64_MAX;
3298             for (i=0; i<is->nb_streams; i++) {
3299                 AVStream *st = is->streams[i];
3300                 if(st->discard == AVDISCARD_ALL || st->start_time == AV_NOPTS_VALUE)
3301                     continue;
3302                 new_start_time = FFMIN(new_start_time, av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q));
3303             }
3304             if (new_start_time > is->start_time) {
3305                 av_log(is, AV_LOG_VERBOSE, "Correcting start time by %"PRId64"\n", new_start_time - is->start_time);
3306                 ifile->ts_offset = -new_start_time;
3307             }
3308         }
3309
3310         stime = av_rescale_q(is->start_time, AV_TIME_BASE_Q, ist->st->time_base);
3311         stime2= stime + (1ULL<<ist->st->pts_wrap_bits);
3312         ist->wrap_correction_done = 1;
3313
3314         if(stime2 > stime && pkt.dts != AV_NOPTS_VALUE && pkt.dts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
3315             pkt.dts -= 1ULL<<ist->st->pts_wrap_bits;
3316             ist->wrap_correction_done = 0;
3317         }
3318         if(stime2 > stime && pkt.pts != AV_NOPTS_VALUE && pkt.pts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
3319             pkt.pts -= 1ULL<<ist->st->pts_wrap_bits;
3320             ist->wrap_correction_done = 0;
3321         }
3322     }
3323
3324     /* add the stream-global side data to the first packet */
3325     if (ist->nb_packets == 1)
3326         if (ist->st->nb_side_data)
3327             av_packet_split_side_data(&pkt);
3328         for (i = 0; i < ist->st->nb_side_data; i++) {
3329             AVPacketSideData *src_sd = &ist->st->side_data[i];
3330             uint8_t *dst_data;
3331
3332             if (av_packet_get_side_data(&pkt, src_sd->type, NULL))
3333                 continue;
3334
3335             dst_data = av_packet_new_side_data(&pkt, src_sd->type, src_sd->size);
3336             if (!dst_data)
3337                 exit_program(1);
3338
3339             memcpy(dst_data, src_sd->data, src_sd->size);
3340         }
3341
3342     if (pkt.dts != AV_NOPTS_VALUE)
3343         pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
3344     if (pkt.pts != AV_NOPTS_VALUE)
3345         pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
3346
3347     if (pkt.pts != AV_NOPTS_VALUE)
3348         pkt.pts *= ist->ts_scale;
3349     if (pkt.dts != AV_NOPTS_VALUE)
3350         pkt.dts *= ist->ts_scale;
3351
3352     if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts == AV_NOPTS_VALUE && !copy_ts
3353         && (is->iformat->flags & AVFMT_TS_DISCONT) && ifile->last_ts != AV_NOPTS_VALUE) {
3354         int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3355         int64_t delta   = pkt_dts - ifile->last_ts;
3356         if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
3357             (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
3358                 ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)){
3359             ifile->ts_offset -= delta;
3360             av_log(NULL, AV_LOG_DEBUG,
3361                    "Inter stream timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
3362                    delta, ifile->ts_offset);
3363             pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3364             if (pkt.pts != AV_NOPTS_VALUE)
3365                 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3366         }
3367     }
3368
3369     if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE &&
3370         !copy_ts) {
3371         int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3372         int64_t delta   = pkt_dts - ist->next_dts;
3373         if (is->iformat->flags & AVFMT_TS_DISCONT) {
3374             if (delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
3375                 (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
3376                  ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
3377                 pkt_dts + AV_TIME_BASE/10 < FFMAX(ist->pts, ist->dts)) {
3378                 ifile->ts_offset -= delta;
3379                 av_log(NULL, AV_LOG_DEBUG,
3380                        "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
3381                        delta, ifile->ts_offset);
3382                 pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3383                 if (pkt.pts != AV_NOPTS_VALUE)
3384                     pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3385             }
3386         } else {
3387             if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3388                 (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)) {
3389                 av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
3390                 pkt.dts = AV_NOPTS_VALUE;
3391             }
3392             if (pkt.pts != AV_NOPTS_VALUE){
3393                 int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
3394                 delta   = pkt_pts - ist->next_dts;
3395                 if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3396                     (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)) {
3397                     av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
3398                     pkt.pts = AV_NOPTS_VALUE;
3399                 }
3400             }
3401         }
3402     }
3403
3404     if (pkt.dts != AV_NOPTS_VALUE)
3405         ifile->last_ts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3406
3407     if (debug_ts) {
3408         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",
3409                ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
3410                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
3411                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
3412                av_ts2str(input_files[ist->file_index]->ts_offset),
3413                av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
3414     }
3415
3416     sub2video_heartbeat(ist, pkt.pts);
3417
3418     ret = output_packet(ist, &pkt);
3419     if (ret < 0) {
3420         av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d: %s\n",
3421                ist->file_index, ist->st->index, av_err2str(ret));
3422         if (exit_on_error)
3423             exit_program(1);
3424     }
3425
3426 discard_packet:
3427     av_free_packet(&pkt);
3428
3429     return 0;
3430 }
3431
3432 /**
3433  * Perform a step of transcoding for the specified filter graph.
3434  *
3435  * @param[in]  graph     filter graph to consider
3436  * @param[out] best_ist  input stream where a frame would allow to continue
3437  * @return  0 for success, <0 for error
3438  */
3439 static int transcode_from_filter(FilterGraph *graph, InputStream **best_ist)
3440 {
3441     int i, ret;
3442     int nb_requests, nb_requests_max = 0;
3443     InputFilter *ifilter;
3444     InputStream *ist;
3445
3446     *best_ist = NULL;
3447     ret = avfilter_graph_request_oldest(graph->graph);
3448     if (ret >= 0)
3449         return reap_filters();
3450
3451     if (ret == AVERROR_EOF) {
3452         ret = reap_filters();
3453         for (i = 0; i < graph->nb_outputs; i++)
3454             close_output_stream(graph->outputs[i]->ost);
3455         return ret;
3456     }
3457     if (ret != AVERROR(EAGAIN))
3458         return ret;
3459
3460     for (i = 0; i < graph->nb_inputs; i++) {
3461         ifilter = graph->inputs[i];
3462         ist = ifilter->ist;
3463         if (input_files[ist->file_index]->eagain ||
3464             input_files[ist->file_index]->eof_reached)
3465             continue;
3466         nb_requests = av_buffersrc_get_nb_failed_requests(ifilter->filter);
3467         if (nb_requests > nb_requests_max) {
3468             nb_requests_max = nb_requests;
3469             *best_ist = ist;
3470         }
3471     }
3472
3473     if (!*best_ist)
3474         for (i = 0; i < graph->nb_outputs; i++)
3475             graph->outputs[i]->ost->unavailable = 1;
3476
3477     return 0;
3478 }
3479
3480 /**
3481  * Run a single step of transcoding.
3482  *
3483  * @return  0 for success, <0 for error
3484  */
3485 static int transcode_step(void)
3486 {
3487     OutputStream *ost;
3488     InputStream  *ist;
3489     int ret;
3490
3491     ost = choose_output();
3492     if (!ost) {
3493         if (got_eagain()) {
3494             reset_eagain();
3495             av_usleep(10000);
3496             return 0;
3497         }
3498         av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from, finishing.\n");
3499         return AVERROR_EOF;
3500     }
3501
3502     if (ost->filter) {
3503         if ((ret = transcode_from_filter(ost->filter->graph, &ist)) < 0)
3504             return ret;
3505         if (!ist)
3506             return 0;
3507     } else {
3508         av_assert0(ost->source_index >= 0);
3509         ist = input_streams[ost->source_index];
3510     }
3511
3512     ret = process_input(ist->file_index);
3513     if (ret == AVERROR(EAGAIN)) {
3514         if (input_files[ist->file_index]->eagain)
3515             ost->unavailable = 1;
3516         return 0;
3517     }
3518     if (ret < 0)
3519         return ret == AVERROR_EOF ? 0 : ret;
3520
3521     return reap_filters();
3522 }
3523
3524 /*
3525  * The following code is the main loop of the file converter
3526  */
3527 static int transcode(void)
3528 {
3529     int ret, i;
3530     AVFormatContext *os;
3531     OutputStream *ost;
3532     InputStream *ist;
3533     int64_t timer_start;
3534
3535     ret = transcode_init();
3536     if (ret < 0)
3537         goto fail;
3538
3539     if (stdin_interaction) {
3540         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
3541     }
3542
3543     timer_start = av_gettime();
3544
3545 #if HAVE_PTHREADS
3546     if ((ret = init_input_threads()) < 0)
3547         goto fail;
3548 #endif
3549
3550     while (!received_sigterm) {
3551         int64_t cur_time= av_gettime();
3552
3553         /* if 'q' pressed, exits */
3554         if (stdin_interaction)
3555             if (check_keyboard_interaction(cur_time) < 0)
3556                 break;
3557
3558         /* check if there's any stream where output is still needed */
3559         if (!need_output()) {
3560             av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
3561             break;
3562         }
3563
3564         ret = transcode_step();
3565         if (ret < 0) {
3566             if (ret == AVERROR_EOF || ret == AVERROR(EAGAIN))
3567                 continue;
3568
3569             av_log(NULL, AV_LOG_ERROR, "Error while filtering.\n");
3570             break;
3571         }
3572
3573         /* dump report by using the output first video and audio streams */
3574         print_report(0, timer_start, cur_time);
3575     }
3576 #if HAVE_PTHREADS
3577     free_input_threads();
3578 #endif
3579
3580     /* at the end of stream, we must flush the decoder buffers */
3581     for (i = 0; i < nb_input_streams; i++) {
3582         ist = input_streams[i];
3583         if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
3584             output_packet(ist, NULL);
3585         }
3586     }
3587     flush_encoders();
3588
3589     term_exit();
3590
3591     /* write the trailer if needed and close file */
3592     for (i = 0; i < nb_output_files; i++) {
3593         os = output_files[i]->ctx;
3594         av_write_trailer(os);
3595     }
3596
3597     /* dump report by using the first video and audio streams */
3598     print_report(1, timer_start, av_gettime());
3599
3600     /* close each encoder */
3601     for (i = 0; i < nb_output_streams; i++) {
3602         ost = output_streams[i];
3603         if (ost->encoding_needed) {
3604             av_freep(&ost->st->codec->stats_in);
3605             avcodec_close(ost->st->codec);
3606         }
3607     }
3608
3609     /* close each decoder */
3610     for (i = 0; i < nb_input_streams; i++) {
3611         ist = input_streams[i];
3612         if (ist->decoding_needed) {
3613             avcodec_close(ist->st->codec);
3614             if (ist->hwaccel_uninit)
3615                 ist->hwaccel_uninit(ist->st->codec);
3616         }
3617     }
3618
3619     /* finished ! */
3620     ret = 0;
3621
3622  fail:
3623 #if HAVE_PTHREADS
3624     free_input_threads();
3625 #endif
3626
3627     if (output_streams) {
3628         for (i = 0; i < nb_output_streams; i++) {
3629             ost = output_streams[i];
3630             if (ost) {
3631                 if (ost->stream_copy)
3632                     av_freep(&ost->st->codec->extradata);
3633                 if (ost->logfile) {
3634                     fclose(ost->logfile);
3635                     ost->logfile = NULL;
3636                 }
3637                 av_freep(&ost->st->codec->subtitle_header);
3638                 av_freep(&ost->forced_kf_pts);
3639                 av_freep(&ost->apad);
3640                 av_dict_free(&ost->opts);
3641                 av_dict_free(&ost->swr_opts);
3642                 av_dict_free(&ost->resample_opts);
3643             }
3644         }
3645     }
3646     return ret;
3647 }
3648
3649
3650 static int64_t getutime(void)
3651 {
3652 #if HAVE_GETRUSAGE
3653     struct rusage rusage;
3654
3655     getrusage(RUSAGE_SELF, &rusage);