avcodec/jpeg2000dec: Add 5/3 de-quantization special case for the lossless case
[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 "libavutil/threadmessage.h"
63 #include "libavcodec/mathops.h"
64 #include "libavformat/os_support.h"
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 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
136
137 InputStream **input_streams = NULL;
138 int        nb_input_streams = 0;
139 InputFile   **input_files   = NULL;
140 int        nb_input_files   = 0;
141
142 OutputStream **output_streams = NULL;
143 int         nb_output_streams = 0;
144 OutputFile   **output_files   = NULL;
145 int         nb_output_files   = 0;
146
147 FilterGraph **filtergraphs;
148 int        nb_filtergraphs;
149
150 #if HAVE_TERMIOS_H
151
152 /* init terminal so that we can grab keys */
153 static struct termios oldtty;
154 static int restore_tty;
155 #endif
156
157 #if HAVE_PTHREADS
158 static void free_input_threads(void);
159 #endif
160
161 /* sub2video hack:
162    Convert subtitles to video with alpha to insert them in filter graphs.
163    This is a temporary solution until libavfilter gets real subtitles support.
164  */
165
166 static int sub2video_get_blank_frame(InputStream *ist)
167 {
168     int ret;
169     AVFrame *frame = ist->sub2video.frame;
170
171     av_frame_unref(frame);
172     ist->sub2video.frame->width  = ist->sub2video.w;
173     ist->sub2video.frame->height = ist->sub2video.h;
174     ist->sub2video.frame->format = AV_PIX_FMT_RGB32;
175     if ((ret = av_frame_get_buffer(frame, 32)) < 0)
176         return ret;
177     memset(frame->data[0], 0, frame->height * frame->linesize[0]);
178     return 0;
179 }
180
181 static void sub2video_copy_rect(uint8_t *dst, int dst_linesize, int w, int h,
182                                 AVSubtitleRect *r)
183 {
184     uint32_t *pal, *dst2;
185     uint8_t *src, *src2;
186     int x, y;
187
188     if (r->type != SUBTITLE_BITMAP) {
189         av_log(NULL, AV_LOG_WARNING, "sub2video: non-bitmap subtitle\n");
190         return;
191     }
192     if (r->x < 0 || r->x + r->w > w || r->y < 0 || r->y + r->h > h) {
193         av_log(NULL, AV_LOG_WARNING, "sub2video: rectangle overflowing\n");
194         return;
195     }
196
197     dst += r->y * dst_linesize + r->x * 4;
198     src = r->pict.data[0];
199     pal = (uint32_t *)r->pict.data[1];
200     for (y = 0; y < r->h; y++) {
201         dst2 = (uint32_t *)dst;
202         src2 = src;
203         for (x = 0; x < r->w; x++)
204             *(dst2++) = pal[*(src2++)];
205         dst += dst_linesize;
206         src += r->pict.linesize[0];
207     }
208 }
209
210 static void sub2video_push_ref(InputStream *ist, int64_t pts)
211 {
212     AVFrame *frame = ist->sub2video.frame;
213     int i;
214
215     av_assert1(frame->data[0]);
216     ist->sub2video.last_pts = frame->pts = pts;
217     for (i = 0; i < ist->nb_filters; i++)
218         av_buffersrc_add_frame_flags(ist->filters[i]->filter, frame,
219                                      AV_BUFFERSRC_FLAG_KEEP_REF |
220                                      AV_BUFFERSRC_FLAG_PUSH);
221 }
222
223 static void sub2video_update(InputStream *ist, AVSubtitle *sub)
224 {
225     int w = ist->sub2video.w, h = ist->sub2video.h;
226     AVFrame *frame = ist->sub2video.frame;
227     int8_t *dst;
228     int     dst_linesize;
229     int num_rects, i;
230     int64_t pts, end_pts;
231
232     if (!frame)
233         return;
234     if (sub) {
235         pts       = av_rescale_q(sub->pts + sub->start_display_time * 1000LL,
236                                  AV_TIME_BASE_Q, ist->st->time_base);
237         end_pts   = av_rescale_q(sub->pts + sub->end_display_time   * 1000LL,
238                                  AV_TIME_BASE_Q, ist->st->time_base);
239         num_rects = sub->num_rects;
240     } else {
241         pts       = ist->sub2video.end_pts;
242         end_pts   = INT64_MAX;
243         num_rects = 0;
244     }
245     if (sub2video_get_blank_frame(ist) < 0) {
246         av_log(ist->dec_ctx, AV_LOG_ERROR,
247                "Impossible to get a blank canvas.\n");
248         return;
249     }
250     dst          = frame->data    [0];
251     dst_linesize = frame->linesize[0];
252     for (i = 0; i < num_rects; i++)
253         sub2video_copy_rect(dst, dst_linesize, w, h, sub->rects[i]);
254     sub2video_push_ref(ist, pts);
255     ist->sub2video.end_pts = end_pts;
256 }
257
258 static void sub2video_heartbeat(InputStream *ist, int64_t pts)
259 {
260     InputFile *infile = input_files[ist->file_index];
261     int i, j, nb_reqs;
262     int64_t pts2;
263
264     /* When a frame is read from a file, examine all sub2video streams in
265        the same file and send the sub2video frame again. Otherwise, decoded
266        video frames could be accumulating in the filter graph while a filter
267        (possibly overlay) is desperately waiting for a subtitle frame. */
268     for (i = 0; i < infile->nb_streams; i++) {
269         InputStream *ist2 = input_streams[infile->ist_index + i];
270         if (!ist2->sub2video.frame)
271             continue;
272         /* subtitles seem to be usually muxed ahead of other streams;
273            if not, subtracting a larger time here is necessary */
274         pts2 = av_rescale_q(pts, ist->st->time_base, ist2->st->time_base) - 1;
275         /* do not send the heartbeat frame if the subtitle is already ahead */
276         if (pts2 <= ist2->sub2video.last_pts)
277             continue;
278         if (pts2 >= ist2->sub2video.end_pts || !ist2->sub2video.frame->data[0])
279             sub2video_update(ist2, NULL);
280         for (j = 0, nb_reqs = 0; j < ist2->nb_filters; j++)
281             nb_reqs += av_buffersrc_get_nb_failed_requests(ist2->filters[j]->filter);
282         if (nb_reqs)
283             sub2video_push_ref(ist2, pts2);
284     }
285 }
286
287 static void sub2video_flush(InputStream *ist)
288 {
289     int i;
290
291     if (ist->sub2video.end_pts < INT64_MAX)
292         sub2video_update(ist, NULL);
293     for (i = 0; i < ist->nb_filters; i++)
294         av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
295 }
296
297 /* end of sub2video hack */
298
299 static void term_exit_sigsafe(void)
300 {
301 #if HAVE_TERMIOS_H
302     if(restore_tty)
303         tcsetattr (0, TCSANOW, &oldtty);
304 #endif
305 }
306
307 void term_exit(void)
308 {
309     av_log(NULL, AV_LOG_QUIET, "%s", "");
310     term_exit_sigsafe();
311 }
312
313 static volatile int received_sigterm = 0;
314 static volatile int received_nb_signals = 0;
315 static volatile int transcode_init_done = 0;
316 static int main_return_code = 0;
317
318 static void
319 sigterm_handler(int sig)
320 {
321     received_sigterm = sig;
322     received_nb_signals++;
323     term_exit_sigsafe();
324     if(received_nb_signals > 3)
325         exit(123);
326 }
327
328 void term_init(void)
329 {
330 #if HAVE_TERMIOS_H
331     if(!run_as_daemon){
332         struct termios tty;
333         int istty = 1;
334 #if HAVE_ISATTY
335         istty = isatty(0) && isatty(2);
336 #endif
337         if (istty && tcgetattr (0, &tty) == 0) {
338             oldtty = tty;
339             restore_tty = 1;
340
341             tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
342                              |INLCR|IGNCR|ICRNL|IXON);
343             tty.c_oflag |= OPOST;
344             tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
345             tty.c_cflag &= ~(CSIZE|PARENB);
346             tty.c_cflag |= CS8;
347             tty.c_cc[VMIN] = 1;
348             tty.c_cc[VTIME] = 0;
349
350             tcsetattr (0, TCSANOW, &tty);
351         }
352         signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
353     }
354 #endif
355
356     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
357     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
358 #ifdef SIGXCPU
359     signal(SIGXCPU, sigterm_handler);
360 #endif
361 }
362
363 /* read a key without blocking */
364 static int read_key(void)
365 {
366     unsigned char ch;
367 #if HAVE_TERMIOS_H
368     int n = 1;
369     struct timeval tv;
370     fd_set rfds;
371
372     FD_ZERO(&rfds);
373     FD_SET(0, &rfds);
374     tv.tv_sec = 0;
375     tv.tv_usec = 0;
376     n = select(1, &rfds, NULL, NULL, &tv);
377     if (n > 0) {
378         n = read(0, &ch, 1);
379         if (n == 1)
380             return ch;
381
382         return n;
383     }
384 #elif HAVE_KBHIT
385 #    if HAVE_PEEKNAMEDPIPE
386     static int is_pipe;
387     static HANDLE input_handle;
388     DWORD dw, nchars;
389     if(!input_handle){
390         input_handle = GetStdHandle(STD_INPUT_HANDLE);
391         is_pipe = !GetConsoleMode(input_handle, &dw);
392     }
393
394     if (stdin->_cnt > 0) {
395         read(0, &ch, 1);
396         return ch;
397     }
398     if (is_pipe) {
399         /* When running under a GUI, you will end here. */
400         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL)) {
401             // input pipe may have been closed by the program that ran ffmpeg
402             return -1;
403         }
404         //Read it
405         if(nchars != 0) {
406             read(0, &ch, 1);
407             return ch;
408         }else{
409             return -1;
410         }
411     }
412 #    endif
413     if(kbhit())
414         return(getch());
415 #endif
416     return -1;
417 }
418
419 static int decode_interrupt_cb(void *ctx)
420 {
421     return received_nb_signals > transcode_init_done;
422 }
423
424 const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
425
426 static void ffmpeg_cleanup(int ret)
427 {
428     int i, j;
429
430     if (do_benchmark) {
431         int maxrss = getmaxrss() / 1024;
432         printf("bench: maxrss=%ikB\n", maxrss);
433     }
434
435     for (i = 0; i < nb_filtergraphs; i++) {
436         FilterGraph *fg = filtergraphs[i];
437         avfilter_graph_free(&fg->graph);
438         for (j = 0; j < fg->nb_inputs; j++) {
439             av_freep(&fg->inputs[j]->name);
440             av_freep(&fg->inputs[j]);
441         }
442         av_freep(&fg->inputs);
443         for (j = 0; j < fg->nb_outputs; j++) {
444             av_freep(&fg->outputs[j]->name);
445             av_freep(&fg->outputs[j]);
446         }
447         av_freep(&fg->outputs);
448         av_freep(&fg->graph_desc);
449
450         av_freep(&filtergraphs[i]);
451     }
452     av_freep(&filtergraphs);
453
454     av_freep(&subtitle_out);
455
456     /* close files */
457     for (i = 0; i < nb_output_files; i++) {
458         OutputFile *of = output_files[i];
459         AVFormatContext *s = of->ctx;
460         if (s && s->oformat && !(s->oformat->flags & AVFMT_NOFILE))
461             avio_closep(&s->pb);
462         avformat_free_context(s);
463         av_dict_free(&of->opts);
464
465         av_freep(&output_files[i]);
466     }
467     for (i = 0; i < nb_output_streams; i++) {
468         OutputStream *ost = output_streams[i];
469         AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
470         while (bsfc) {
471             AVBitStreamFilterContext *next = bsfc->next;
472             av_bitstream_filter_close(bsfc);
473             bsfc = next;
474         }
475         ost->bitstream_filters = NULL;
476         av_frame_free(&ost->filtered_frame);
477         av_frame_free(&ost->last_frame);
478
479         av_parser_close(ost->parser);
480
481         av_freep(&ost->forced_keyframes);
482         av_expr_free(ost->forced_keyframes_pexpr);
483         av_freep(&ost->avfilter);
484         av_freep(&ost->logfile_prefix);
485
486         av_freep(&ost->audio_channels_map);
487         ost->audio_channels_mapped = 0;
488
489         avcodec_free_context(&ost->enc_ctx);
490
491         av_freep(&output_streams[i]);
492     }
493 #if HAVE_PTHREADS
494     free_input_threads();
495 #endif
496     for (i = 0; i < nb_input_files; i++) {
497         avformat_close_input(&input_files[i]->ctx);
498         av_freep(&input_files[i]);
499     }
500     for (i = 0; i < nb_input_streams; i++) {
501         InputStream *ist = input_streams[i];
502
503         av_frame_free(&ist->decoded_frame);
504         av_frame_free(&ist->filter_frame);
505         av_dict_free(&ist->decoder_opts);
506         avsubtitle_free(&ist->prev_sub.subtitle);
507         av_frame_free(&ist->sub2video.frame);
508         av_freep(&ist->filters);
509         av_freep(&ist->hwaccel_device);
510
511         avcodec_free_context(&ist->dec_ctx);
512
513         av_freep(&input_streams[i]);
514     }
515
516     if (vstats_file)
517         fclose(vstats_file);
518     av_freep(&vstats_filename);
519
520     av_freep(&input_streams);
521     av_freep(&input_files);
522     av_freep(&output_streams);
523     av_freep(&output_files);
524
525     uninit_opts();
526
527     avformat_network_deinit();
528
529     if (received_sigterm) {
530         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
531                (int) received_sigterm);
532     } else if (ret && transcode_init_done) {
533         av_log(NULL, AV_LOG_INFO, "Conversion failed!\n");
534     }
535     term_exit();
536 }
537
538 void remove_avoptions(AVDictionary **a, AVDictionary *b)
539 {
540     AVDictionaryEntry *t = NULL;
541
542     while ((t = av_dict_get(b, "", t, AV_DICT_IGNORE_SUFFIX))) {
543         av_dict_set(a, t->key, NULL, AV_DICT_MATCH_CASE);
544     }
545 }
546
547 void assert_avoptions(AVDictionary *m)
548 {
549     AVDictionaryEntry *t;
550     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
551         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
552         exit_program(1);
553     }
554 }
555
556 static void abort_codec_experimental(AVCodec *c, int encoder)
557 {
558     exit_program(1);
559 }
560
561 static void update_benchmark(const char *fmt, ...)
562 {
563     if (do_benchmark_all) {
564         int64_t t = getutime();
565         va_list va;
566         char buf[1024];
567
568         if (fmt) {
569             va_start(va, fmt);
570             vsnprintf(buf, sizeof(buf), fmt, va);
571             va_end(va);
572             printf("bench: %8"PRIu64" %s \n", t - current_time, buf);
573         }
574         current_time = t;
575     }
576 }
577
578 static void close_all_output_streams(OutputStream *ost, OSTFinished this_stream, OSTFinished others)
579 {
580     int i;
581     for (i = 0; i < nb_output_streams; i++) {
582         OutputStream *ost2 = output_streams[i];
583         ost2->finished |= ost == ost2 ? this_stream : others;
584     }
585 }
586
587 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
588 {
589     AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
590     AVCodecContext          *avctx = ost->encoding_needed ? ost->enc_ctx : ost->st->codec;
591     int ret;
592
593     if (!ost->st->codec->extradata_size && ost->enc_ctx->extradata_size) {
594         ost->st->codec->extradata = av_mallocz(ost->enc_ctx->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
595         if (ost->st->codec->extradata) {
596             memcpy(ost->st->codec->extradata, ost->enc_ctx->extradata, ost->enc_ctx->extradata_size);
597             ost->st->codec->extradata_size = ost->enc_ctx->extradata_size;
598         }
599     }
600
601     if ((avctx->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
602         (avctx->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
603         pkt->pts = pkt->dts = AV_NOPTS_VALUE;
604
605     /*
606      * Audio encoders may split the packets --  #frames in != #packets out.
607      * But there is no reordering, so we can limit the number of output packets
608      * by simply dropping them here.
609      * Counting encoded video frames needs to be done separately because of
610      * reordering, see do_video_out()
611      */
612     if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
613         if (ost->frame_number >= ost->max_frames) {
614             av_free_packet(pkt);
615             return;
616         }
617         ost->frame_number++;
618     }
619
620     if (bsfc)
621         av_packet_split_side_data(pkt);
622
623     while (bsfc) {
624         AVPacket new_pkt = *pkt;
625         AVDictionaryEntry *bsf_arg = av_dict_get(ost->bsf_args,
626                                                  bsfc->filter->name,
627                                                  NULL, 0);
628         int a = av_bitstream_filter_filter(bsfc, avctx,
629                                            bsf_arg ? bsf_arg->value : NULL,
630                                            &new_pkt.data, &new_pkt.size,
631                                            pkt->data, pkt->size,
632                                            pkt->flags & AV_PKT_FLAG_KEY);
633         if(a == 0 && new_pkt.data != pkt->data && new_pkt.destruct) {
634             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
635             if(t) {
636                 memcpy(t, new_pkt.data, new_pkt.size);
637                 memset(t + new_pkt.size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
638                 new_pkt.data = t;
639                 new_pkt.buf = NULL;
640                 a = 1;
641             } else
642                 a = AVERROR(ENOMEM);
643         }
644         if (a > 0) {
645             pkt->side_data = NULL;
646             pkt->side_data_elems = 0;
647             av_free_packet(pkt);
648             new_pkt.buf = av_buffer_create(new_pkt.data, new_pkt.size,
649                                            av_buffer_default_free, NULL, 0);
650             if (!new_pkt.buf)
651                 exit_program(1);
652         } else if (a < 0) {
653             new_pkt = *pkt;
654             av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
655                    bsfc->filter->name, pkt->stream_index,
656                    avctx->codec ? avctx->codec->name : "copy");
657             print_error("", a);
658             if (exit_on_error)
659                 exit_program(1);
660         }
661         *pkt = new_pkt;
662
663         bsfc = bsfc->next;
664     }
665
666     if (!(s->oformat->flags & AVFMT_NOTIMESTAMPS)) {
667         if (pkt->dts != AV_NOPTS_VALUE &&
668             pkt->pts != AV_NOPTS_VALUE &&
669             pkt->dts > pkt->pts) {
670             av_log(s, AV_LOG_WARNING, "Invalid DTS: %"PRId64" PTS: %"PRId64" in output stream %d:%d, replacing by guess\n",
671                    pkt->dts, pkt->pts,
672                    ost->file_index, ost->st->index);
673             pkt->pts =
674             pkt->dts = pkt->pts + pkt->dts + ost->last_mux_dts + 1
675                      - FFMIN3(pkt->pts, pkt->dts, ost->last_mux_dts + 1)
676                      - FFMAX3(pkt->pts, pkt->dts, ost->last_mux_dts + 1);
677         }
678      if(
679         (avctx->codec_type == AVMEDIA_TYPE_AUDIO || avctx->codec_type == AVMEDIA_TYPE_VIDEO) &&
680         pkt->dts != AV_NOPTS_VALUE &&
681         ost->last_mux_dts != AV_NOPTS_VALUE) {
682       int64_t max = ost->last_mux_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
683       if (pkt->dts < max) {
684         int loglevel = max - pkt->dts > 2 || avctx->codec_type == AVMEDIA_TYPE_VIDEO ? AV_LOG_WARNING : AV_LOG_DEBUG;
685         av_log(s, loglevel, "Non-monotonous DTS in output stream "
686                "%d:%d; previous: %"PRId64", current: %"PRId64"; ",
687                ost->file_index, ost->st->index, ost->last_mux_dts, pkt->dts);
688         if (exit_on_error) {
689             av_log(NULL, AV_LOG_FATAL, "aborting.\n");
690             exit_program(1);
691         }
692         av_log(s, loglevel, "changing to %"PRId64". This may result "
693                "in incorrect timestamps in the output file.\n",
694                max);
695         if(pkt->pts >= pkt->dts)
696             pkt->pts = FFMAX(pkt->pts, max);
697         pkt->dts = max;
698       }
699      }
700     }
701     ost->last_mux_dts = pkt->dts;
702
703     ost->data_size += pkt->size;
704     ost->packets_written++;
705
706     pkt->stream_index = ost->index;
707
708     if (debug_ts) {
709         av_log(NULL, AV_LOG_INFO, "muxer <- type:%s "
710                 "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s size:%d\n",
711                 av_get_media_type_string(ost->enc_ctx->codec_type),
712                 av_ts2str(pkt->pts), av_ts2timestr(pkt->pts, &ost->st->time_base),
713                 av_ts2str(pkt->dts), av_ts2timestr(pkt->dts, &ost->st->time_base),
714                 pkt->size
715               );
716     }
717
718     ret = av_interleaved_write_frame(s, pkt);
719     if (ret < 0) {
720         print_error("av_interleaved_write_frame()", ret);
721         main_return_code = 1;
722         close_all_output_streams(ost, MUXER_FINISHED | ENCODER_FINISHED, ENCODER_FINISHED);
723     }
724     av_free_packet(pkt);
725 }
726
727 static void close_output_stream(OutputStream *ost)
728 {
729     OutputFile *of = output_files[ost->file_index];
730
731     ost->finished |= ENCODER_FINISHED;
732     if (of->shortest) {
733         int64_t end = av_rescale_q(ost->sync_opts - ost->first_pts, ost->enc_ctx->time_base, AV_TIME_BASE_Q);
734         of->recording_time = FFMIN(of->recording_time, end);
735     }
736 }
737
738 static int check_recording_time(OutputStream *ost)
739 {
740     OutputFile *of = output_files[ost->file_index];
741
742     if (of->recording_time != INT64_MAX &&
743         av_compare_ts(ost->sync_opts - ost->first_pts, ost->enc_ctx->time_base, of->recording_time,
744                       AV_TIME_BASE_Q) >= 0) {
745         close_output_stream(ost);
746         return 0;
747     }
748     return 1;
749 }
750
751 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
752                          AVFrame *frame)
753 {
754     AVCodecContext *enc = ost->enc_ctx;
755     AVPacket pkt;
756     int got_packet = 0;
757
758     av_init_packet(&pkt);
759     pkt.data = NULL;
760     pkt.size = 0;
761
762     if (!check_recording_time(ost))
763         return;
764
765     if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
766         frame->pts = ost->sync_opts;
767     ost->sync_opts = frame->pts + frame->nb_samples;
768     ost->samples_encoded += frame->nb_samples;
769     ost->frames_encoded++;
770
771     av_assert0(pkt.size || !pkt.data);
772     update_benchmark(NULL);
773     if (debug_ts) {
774         av_log(NULL, AV_LOG_INFO, "encoder <- type:audio "
775                "frame_pts:%s frame_pts_time:%s time_base:%d/%d\n",
776                av_ts2str(frame->pts), av_ts2timestr(frame->pts, &enc->time_base),
777                enc->time_base.num, enc->time_base.den);
778     }
779
780     if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
781         av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
782         exit_program(1);
783     }
784     update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
785
786     if (got_packet) {
787         av_packet_rescale_ts(&pkt, enc->time_base, ost->st->time_base);
788
789         if (debug_ts) {
790             av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
791                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
792                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
793                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
794         }
795
796         write_frame(s, &pkt, ost);
797     }
798 }
799
800 static void do_subtitle_out(AVFormatContext *s,
801                             OutputStream *ost,
802                             InputStream *ist,
803                             AVSubtitle *sub)
804 {
805     int subtitle_out_max_size = 1024 * 1024;
806     int subtitle_out_size, nb, i;
807     AVCodecContext *enc;
808     AVPacket pkt;
809     int64_t pts;
810
811     if (sub->pts == AV_NOPTS_VALUE) {
812         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
813         if (exit_on_error)
814             exit_program(1);
815         return;
816     }
817
818     enc = ost->enc_ctx;
819
820     if (!subtitle_out) {
821         subtitle_out = av_malloc(subtitle_out_max_size);
822         if (!subtitle_out) {
823             av_log(NULL, AV_LOG_FATAL, "Failed to allocate subtitle_out\n");
824             exit_program(1);
825         }
826     }
827
828     /* Note: DVB subtitle need one packet to draw them and one other
829        packet to clear them */
830     /* XXX: signal it in the codec context ? */
831     if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE)
832         nb = 2;
833     else
834         nb = 1;
835
836     /* shift timestamp to honor -ss and make check_recording_time() work with -t */
837     pts = sub->pts;
838     if (output_files[ost->file_index]->start_time != AV_NOPTS_VALUE)
839         pts -= output_files[ost->file_index]->start_time;
840     for (i = 0; i < nb; i++) {
841         unsigned save_num_rects = sub->num_rects;
842
843         ost->sync_opts = av_rescale_q(pts, AV_TIME_BASE_Q, enc->time_base);
844         if (!check_recording_time(ost))
845             return;
846
847         sub->pts = pts;
848         // start_display_time is required to be 0
849         sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
850         sub->end_display_time  -= sub->start_display_time;
851         sub->start_display_time = 0;
852         if (i == 1)
853             sub->num_rects = 0;
854
855         ost->frames_encoded++;
856
857         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
858                                                     subtitle_out_max_size, sub);
859         if (i == 1)
860             sub->num_rects = save_num_rects;
861         if (subtitle_out_size < 0) {
862             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
863             exit_program(1);
864         }
865
866         av_init_packet(&pkt);
867         pkt.data = subtitle_out;
868         pkt.size = subtitle_out_size;
869         pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
870         pkt.duration = av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->st->time_base);
871         if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
872             /* XXX: the pts correction is handled here. Maybe handling
873                it in the codec would be better */
874             if (i == 0)
875                 pkt.pts += 90 * sub->start_display_time;
876             else
877                 pkt.pts += 90 * sub->end_display_time;
878         }
879         pkt.dts = pkt.pts;
880         write_frame(s, &pkt, ost);
881     }
882 }
883
884 static void do_video_out(AVFormatContext *s,
885                          OutputStream *ost,
886                          AVFrame *next_picture,
887                          double sync_ipts)
888 {
889     int ret, format_video_sync;
890     AVPacket pkt;
891     AVCodecContext *enc = ost->enc_ctx;
892     AVCodecContext *mux_enc = ost->st->codec;
893     int nb_frames, nb0_frames, i;
894     double delta, delta0;
895     double duration = 0;
896     int frame_size = 0;
897     InputStream *ist = NULL;
898     AVFilterContext *filter = ost->filter->filter;
899
900     if (ost->source_index >= 0)
901         ist = input_streams[ost->source_index];
902
903     if (filter->inputs[0]->frame_rate.num > 0 &&
904         filter->inputs[0]->frame_rate.den > 0)
905         duration = 1/(av_q2d(filter->inputs[0]->frame_rate) * av_q2d(enc->time_base));
906
907     if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
908         duration = FFMIN(duration, 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base)));
909
910     if (!ost->filters_script &&
911         !ost->filters &&
912         next_picture &&
913         ist &&
914         lrintf(av_frame_get_pkt_duration(next_picture) * av_q2d(ist->st->time_base) / av_q2d(enc->time_base)) > 0) {
915         duration = lrintf(av_frame_get_pkt_duration(next_picture) * av_q2d(ist->st->time_base) / av_q2d(enc->time_base));
916     }
917
918     if (!next_picture) {
919         //end, flushing
920         nb0_frames = nb_frames = mid_pred(ost->last_nb0_frames[0],
921                                           ost->last_nb0_frames[1],
922                                           ost->last_nb0_frames[2]);
923     } else {
924         delta0 = sync_ipts - ost->sync_opts;
925         delta  = delta0 + duration;
926
927         /* by default, we output a single frame */
928         nb0_frames = 0;
929         nb_frames = 1;
930
931         format_video_sync = video_sync_method;
932         if (format_video_sync == VSYNC_AUTO) {
933             if(!strcmp(s->oformat->name, "avi")) {
934                 format_video_sync = VSYNC_VFR;
935             } else
936                 format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : VSYNC_CFR;
937             if (   ist
938                 && format_video_sync == VSYNC_CFR
939                 && input_files[ist->file_index]->ctx->nb_streams == 1
940                 && input_files[ist->file_index]->input_ts_offset == 0) {
941                 format_video_sync = VSYNC_VSCFR;
942             }
943             if (format_video_sync == VSYNC_CFR && copy_ts) {
944                 format_video_sync = VSYNC_VSCFR;
945             }
946         }
947
948         if (delta0 < 0 &&
949             delta > 0 &&
950             format_video_sync != VSYNC_PASSTHROUGH &&
951             format_video_sync != VSYNC_DROP) {
952             double cor = FFMIN(-delta0, duration);
953             if (delta0 < -0.6) {
954                 av_log(NULL, AV_LOG_WARNING, "Past duration %f too large\n", -delta0);
955             } else
956                 av_log(NULL, AV_LOG_DEBUG, "Cliping frame in rate conversion by %f\n", -delta0);
957             sync_ipts += cor;
958             duration -= cor;
959             delta0 += cor;
960         }
961
962         switch (format_video_sync) {
963         case VSYNC_VSCFR:
964             if (ost->frame_number == 0 && delta - duration >= 0.5) {
965                 av_log(NULL, AV_LOG_DEBUG, "Not duplicating %d initial frames\n", (int)lrintf(delta - duration));
966                 delta = duration;
967                 delta0 = 0;
968                 ost->sync_opts = lrint(sync_ipts);
969             }
970         case VSYNC_CFR:
971             // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
972             if (frame_drop_threshold && delta < frame_drop_threshold && ost->frame_number) {
973                 nb_frames = 0;
974             } else if (delta < -1.1)
975                 nb_frames = 0;
976             else if (delta > 1.1) {
977                 nb_frames = lrintf(delta);
978                 if (delta0 > 1.1)
979                     nb0_frames = lrintf(delta0 - 0.6);
980             }
981             break;
982         case VSYNC_VFR:
983             if (delta <= -0.6)
984                 nb_frames = 0;
985             else if (delta > 0.6)
986                 ost->sync_opts = lrint(sync_ipts);
987             break;
988         case VSYNC_DROP:
989         case VSYNC_PASSTHROUGH:
990             ost->sync_opts = lrint(sync_ipts);
991             break;
992         default:
993             av_assert0(0);
994         }
995     }
996
997     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
998     nb0_frames = FFMIN(nb0_frames, nb_frames);
999
1000     memmove(ost->last_nb0_frames + 1,
1001             ost->last_nb0_frames,
1002             sizeof(ost->last_nb0_frames[0]) * (FF_ARRAY_ELEMS(ost->last_nb0_frames) - 1));
1003     ost->last_nb0_frames[0] = nb0_frames;
1004
1005     if (nb0_frames == 0 && ost->last_droped) {
1006         nb_frames_drop++;
1007         av_log(NULL, AV_LOG_VERBOSE,
1008                "*** dropping frame %d from stream %d at ts %"PRId64"\n",
1009                ost->frame_number, ost->st->index, ost->last_frame->pts);
1010     }
1011     if (nb_frames > (nb0_frames && ost->last_droped) + (nb_frames > nb0_frames)) {
1012         if (nb_frames > dts_error_threshold * 30) {
1013             av_log(NULL, AV_LOG_ERROR, "%d frame duplication too large, skipping\n", nb_frames - 1);
1014             nb_frames_drop++;
1015             return;
1016         }
1017         nb_frames_dup += nb_frames - (nb0_frames && ost->last_droped) - (nb_frames > nb0_frames);
1018         av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
1019     }
1020     ost->last_droped = nb_frames == nb0_frames && next_picture;
1021
1022   /* duplicates frame if needed */
1023   for (i = 0; i < nb_frames; i++) {
1024     AVFrame *in_picture;
1025     av_init_packet(&pkt);
1026     pkt.data = NULL;
1027     pkt.size = 0;
1028
1029     if (i < nb0_frames && ost->last_frame) {
1030         in_picture = ost->last_frame;
1031     } else
1032         in_picture = next_picture;
1033
1034     if (!in_picture)
1035         return;
1036
1037     in_picture->pts = ost->sync_opts;
1038
1039 #if 1
1040     if (!check_recording_time(ost))
1041 #else
1042     if (ost->frame_number >= ost->max_frames)
1043 #endif
1044         return;
1045
1046     if (s->oformat->flags & AVFMT_RAWPICTURE &&
1047         enc->codec->id == AV_CODEC_ID_RAWVIDEO) {
1048         /* raw pictures are written as AVPicture structure to
1049            avoid any copies. We support temporarily the older
1050            method. */
1051         if (in_picture->interlaced_frame)
1052             mux_enc->field_order = in_picture->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
1053         else
1054             mux_enc->field_order = AV_FIELD_PROGRESSIVE;
1055         pkt.data   = (uint8_t *)in_picture;
1056         pkt.size   =  sizeof(AVPicture);
1057         pkt.pts    = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
1058         pkt.flags |= AV_PKT_FLAG_KEY;
1059
1060         write_frame(s, &pkt, ost);
1061     } else {
1062         int got_packet, forced_keyframe = 0;
1063         double pts_time;
1064
1065         if (enc->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME) &&
1066             ost->top_field_first >= 0)
1067             in_picture->top_field_first = !!ost->top_field_first;
1068
1069         if (in_picture->interlaced_frame) {
1070             if (enc->codec->id == AV_CODEC_ID_MJPEG)
1071                 mux_enc->field_order = in_picture->top_field_first ? AV_FIELD_TT:AV_FIELD_BB;
1072             else
1073                 mux_enc->field_order = in_picture->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
1074         } else
1075             mux_enc->field_order = AV_FIELD_PROGRESSIVE;
1076
1077         in_picture->quality = enc->global_quality;
1078         in_picture->pict_type = 0;
1079
1080         pts_time = in_picture->pts != AV_NOPTS_VALUE ?
1081             in_picture->pts * av_q2d(enc->time_base) : NAN;
1082         if (ost->forced_kf_index < ost->forced_kf_count &&
1083             in_picture->pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1084             ost->forced_kf_index++;
1085             forced_keyframe = 1;
1086         } else if (ost->forced_keyframes_pexpr) {
1087             double res;
1088             ost->forced_keyframes_expr_const_values[FKF_T] = pts_time;
1089             res = av_expr_eval(ost->forced_keyframes_pexpr,
1090                                ost->forced_keyframes_expr_const_values, NULL);
1091             av_dlog(NULL, "force_key_frame: n:%f n_forced:%f prev_forced_n:%f t:%f prev_forced_t:%f -> res:%f\n",
1092                     ost->forced_keyframes_expr_const_values[FKF_N],
1093                     ost->forced_keyframes_expr_const_values[FKF_N_FORCED],
1094                     ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N],
1095                     ost->forced_keyframes_expr_const_values[FKF_T],
1096                     ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T],
1097                     res);
1098             if (res) {
1099                 forced_keyframe = 1;
1100                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] =
1101                     ost->forced_keyframes_expr_const_values[FKF_N];
1102                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] =
1103                     ost->forced_keyframes_expr_const_values[FKF_T];
1104                 ost->forced_keyframes_expr_const_values[FKF_N_FORCED] += 1;
1105             }
1106
1107             ost->forced_keyframes_expr_const_values[FKF_N] += 1;
1108         } else if (   ost->forced_keyframes
1109                    && !strncmp(ost->forced_keyframes, "source", 6)
1110                    && in_picture->key_frame==1) {
1111             forced_keyframe = 1;
1112         }
1113
1114         if (forced_keyframe) {
1115             in_picture->pict_type = AV_PICTURE_TYPE_I;
1116             av_log(NULL, AV_LOG_DEBUG, "Forced keyframe at time %f\n", pts_time);
1117         }
1118
1119         update_benchmark(NULL);
1120         if (debug_ts) {
1121             av_log(NULL, AV_LOG_INFO, "encoder <- type:video "
1122                    "frame_pts:%s frame_pts_time:%s time_base:%d/%d\n",
1123                    av_ts2str(in_picture->pts), av_ts2timestr(in_picture->pts, &enc->time_base),
1124                    enc->time_base.num, enc->time_base.den);
1125         }
1126
1127         ost->frames_encoded++;
1128
1129         ret = avcodec_encode_video2(enc, &pkt, in_picture, &got_packet);
1130         update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
1131         if (ret < 0) {
1132             av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1133             exit_program(1);
1134         }
1135
1136         if (got_packet) {
1137             if (debug_ts) {
1138                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
1139                        "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
1140                        av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &enc->time_base),
1141                        av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &enc->time_base));
1142             }
1143
1144             if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
1145                 pkt.pts = ost->sync_opts;
1146
1147             av_packet_rescale_ts(&pkt, enc->time_base, ost->st->time_base);
1148
1149             if (debug_ts) {
1150                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
1151                     "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
1152                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
1153                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
1154             }
1155
1156             frame_size = pkt.size;
1157             write_frame(s, &pkt, ost);
1158
1159             /* if two pass, output log */
1160             if (ost->logfile && enc->stats_out) {
1161                 fprintf(ost->logfile, "%s", enc->stats_out);
1162             }
1163         }
1164     }
1165     ost->sync_opts++;
1166     /*
1167      * For video, number of frames in == number of packets out.
1168      * But there may be reordering, so we can't throw away frames on encoder
1169      * flush, we need to limit them here, before they go into encoder.
1170      */
1171     ost->frame_number++;
1172
1173     if (vstats_filename && frame_size)
1174         do_video_stats(ost, frame_size);
1175   }
1176
1177     if (!ost->last_frame)
1178         ost->last_frame = av_frame_alloc();
1179     av_frame_unref(ost->last_frame);
1180     if (next_picture)
1181         av_frame_ref(ost->last_frame, next_picture);
1182     else
1183         av_frame_free(&ost->last_frame);
1184 }
1185
1186 static double psnr(double d)
1187 {
1188     return -10.0 * log(d) / log(10.0);
1189 }
1190
1191 static void do_video_stats(OutputStream *ost, int frame_size)
1192 {
1193     AVCodecContext *enc;
1194     int frame_number;
1195     double ti1, bitrate, avg_bitrate;
1196
1197     /* this is executed just the first time do_video_stats is called */
1198     if (!vstats_file) {
1199         vstats_file = fopen(vstats_filename, "w");
1200         if (!vstats_file) {
1201             perror("fopen");
1202             exit_program(1);
1203         }
1204     }
1205
1206     enc = ost->enc_ctx;
1207     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1208         frame_number = ost->st->nb_frames;
1209         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame ? enc->coded_frame->quality / (float)FF_QP2LAMBDA : 0);
1210         if (enc->coded_frame && (enc->flags&CODEC_FLAG_PSNR))
1211             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
1212
1213         fprintf(vstats_file,"f_size= %6d ", frame_size);
1214         /* compute pts value */
1215         ti1 = av_stream_get_end_pts(ost->st) * av_q2d(ost->st->time_base);
1216         if (ti1 < 0.01)
1217             ti1 = 0.01;
1218
1219         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1220         avg_bitrate = (double)(ost->data_size * 8) / ti1 / 1000.0;
1221         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1222                (double)ost->data_size / 1024, ti1, bitrate, avg_bitrate);
1223         fprintf(vstats_file, "type= %c\n", enc->coded_frame ? av_get_picture_type_char(enc->coded_frame->pict_type) : 'I');
1224     }
1225 }
1226
1227 static void finish_output_stream(OutputStream *ost)
1228 {
1229     OutputFile *of = output_files[ost->file_index];
1230     int i;
1231
1232     ost->finished = ENCODER_FINISHED | MUXER_FINISHED;
1233
1234     if (of->shortest) {
1235         for (i = 0; i < of->ctx->nb_streams; i++)
1236             output_streams[of->ost_index + i]->finished = ENCODER_FINISHED | MUXER_FINISHED;
1237     }
1238 }
1239
1240 /**
1241  * Get and encode new output from any of the filtergraphs, without causing
1242  * activity.
1243  *
1244  * @return  0 for success, <0 for severe errors
1245  */
1246 static int reap_filters(int flush)
1247 {
1248     AVFrame *filtered_frame = NULL;
1249     int i;
1250
1251     /* Reap all buffers present in the buffer sinks */
1252     for (i = 0; i < nb_output_streams; i++) {
1253         OutputStream *ost = output_streams[i];
1254         OutputFile    *of = output_files[ost->file_index];
1255         AVFilterContext *filter;
1256         AVCodecContext *enc = ost->enc_ctx;
1257         int ret = 0;
1258
1259         if (!ost->filter)
1260             continue;
1261         filter = ost->filter->filter;
1262
1263         if (!ost->filtered_frame && !(ost->filtered_frame = av_frame_alloc())) {
1264             return AVERROR(ENOMEM);
1265         }
1266         filtered_frame = ost->filtered_frame;
1267
1268         while (1) {
1269             double float_pts = AV_NOPTS_VALUE; // this is identical to filtered_frame.pts but with higher precision
1270             ret = av_buffersink_get_frame_flags(filter, filtered_frame,
1271                                                AV_BUFFERSINK_FLAG_NO_REQUEST);
1272             if (ret < 0) {
1273                 if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
1274                     av_log(NULL, AV_LOG_WARNING,
1275                            "Error in av_buffersink_get_frame_flags(): %s\n", av_err2str(ret));
1276                 } else if (flush && ret == AVERROR_EOF) {
1277                     if (filter->inputs[0]->type == AVMEDIA_TYPE_VIDEO)
1278                         do_video_out(of->ctx, ost, NULL, AV_NOPTS_VALUE);
1279                 }
1280                 break;
1281             }
1282             if (ost->finished) {
1283                 av_frame_unref(filtered_frame);
1284                 continue;
1285             }
1286             if (filtered_frame->pts != AV_NOPTS_VALUE) {
1287                 int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
1288                 AVRational tb = enc->time_base;
1289                 int extra_bits = av_clip(29 - av_log2(tb.den), 0, 16);
1290
1291                 tb.den <<= extra_bits;
1292                 float_pts =
1293                     av_rescale_q(filtered_frame->pts, filter->inputs[0]->time_base, tb) -
1294                     av_rescale_q(start_time, AV_TIME_BASE_Q, tb);
1295                 float_pts /= 1 << extra_bits;
1296                 // avoid exact midoints to reduce the chance of rounding differences, this can be removed in case the fps code is changed to work with integers
1297                 float_pts += FFSIGN(float_pts) * 1.0 / (1<<17);
1298
1299                 filtered_frame->pts =
1300                     av_rescale_q(filtered_frame->pts, filter->inputs[0]->time_base, enc->time_base) -
1301                     av_rescale_q(start_time, AV_TIME_BASE_Q, enc->time_base);
1302             }
1303             //if (ost->source_index >= 0)
1304             //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
1305
1306             switch (filter->inputs[0]->type) {
1307             case AVMEDIA_TYPE_VIDEO:
1308                 if (!ost->frame_aspect_ratio.num)
1309                     enc->sample_aspect_ratio = filtered_frame->sample_aspect_ratio;
1310
1311                 if (debug_ts) {
1312                     av_log(NULL, AV_LOG_INFO, "filter -> pts:%s pts_time:%s exact:%f time_base:%d/%d\n",
1313                             av_ts2str(filtered_frame->pts), av_ts2timestr(filtered_frame->pts, &enc->time_base),
1314                             float_pts,
1315                             enc->time_base.num, enc->time_base.den);
1316                 }
1317
1318                 do_video_out(of->ctx, ost, filtered_frame, float_pts);
1319                 break;
1320             case AVMEDIA_TYPE_AUDIO:
1321                 if (!(enc->codec->capabilities & CODEC_CAP_PARAM_CHANGE) &&
1322                     enc->channels != av_frame_get_channels(filtered_frame)) {
1323                     av_log(NULL, AV_LOG_ERROR,
1324                            "Audio filter graph output is not normalized and encoder does not support parameter changes\n");
1325                     break;
1326                 }
1327                 do_audio_out(of->ctx, ost, filtered_frame);
1328                 break;
1329             default:
1330                 // TODO support subtitle filters
1331                 av_assert0(0);
1332             }
1333
1334             av_frame_unref(filtered_frame);
1335         }
1336     }
1337
1338     return 0;
1339 }
1340
1341 static void print_final_stats(int64_t total_size)
1342 {
1343     uint64_t video_size = 0, audio_size = 0, extra_size = 0, other_size = 0;
1344     uint64_t subtitle_size = 0;
1345     uint64_t data_size = 0;
1346     float percent = -1.0;
1347     int i, j;
1348     int pass1_used = 1;
1349
1350     for (i = 0; i < nb_output_streams; i++) {
1351         OutputStream *ost = output_streams[i];
1352         switch (ost->enc_ctx->codec_type) {
1353             case AVMEDIA_TYPE_VIDEO: video_size += ost->data_size; break;
1354             case AVMEDIA_TYPE_AUDIO: audio_size += ost->data_size; break;
1355             case AVMEDIA_TYPE_SUBTITLE: subtitle_size += ost->data_size; break;
1356             default:                 other_size += ost->data_size; break;
1357         }
1358         extra_size += ost->enc_ctx->extradata_size;
1359         data_size  += ost->data_size;
1360         if (   (ost->enc_ctx->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))
1361             != CODEC_FLAG_PASS1)
1362             pass1_used = 0;
1363     }
1364
1365     if (data_size && total_size>0 && total_size >= data_size)
1366         percent = 100.0 * (total_size - data_size) / data_size;
1367
1368     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: ",
1369            video_size / 1024.0,
1370            audio_size / 1024.0,
1371            subtitle_size / 1024.0,
1372            other_size / 1024.0,
1373            extra_size / 1024.0);
1374     if (percent >= 0.0)
1375         av_log(NULL, AV_LOG_INFO, "%f%%", percent);
1376     else
1377         av_log(NULL, AV_LOG_INFO, "unknown");
1378     av_log(NULL, AV_LOG_INFO, "\n");
1379
1380     /* print verbose per-stream stats */
1381     for (i = 0; i < nb_input_files; i++) {
1382         InputFile *f = input_files[i];
1383         uint64_t total_packets = 0, total_size = 0;
1384
1385         av_log(NULL, AV_LOG_VERBOSE, "Input file #%d (%s):\n",
1386                i, f->ctx->filename);
1387
1388         for (j = 0; j < f->nb_streams; j++) {
1389             InputStream *ist = input_streams[f->ist_index + j];
1390             enum AVMediaType type = ist->dec_ctx->codec_type;
1391
1392             total_size    += ist->data_size;
1393             total_packets += ist->nb_packets;
1394
1395             av_log(NULL, AV_LOG_VERBOSE, "  Input stream #%d:%d (%s): ",
1396                    i, j, media_type_string(type));
1397             av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" packets read (%"PRIu64" bytes); ",
1398                    ist->nb_packets, ist->data_size);
1399
1400             if (ist->decoding_needed) {
1401                 av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" frames decoded",
1402                        ist->frames_decoded);
1403                 if (type == AVMEDIA_TYPE_AUDIO)
1404                     av_log(NULL, AV_LOG_VERBOSE, " (%"PRIu64" samples)", ist->samples_decoded);
1405                 av_log(NULL, AV_LOG_VERBOSE, "; ");
1406             }
1407
1408             av_log(NULL, AV_LOG_VERBOSE, "\n");
1409         }
1410
1411         av_log(NULL, AV_LOG_VERBOSE, "  Total: %"PRIu64" packets (%"PRIu64" bytes) demuxed\n",
1412                total_packets, total_size);
1413     }
1414
1415     for (i = 0; i < nb_output_files; i++) {
1416         OutputFile *of = output_files[i];
1417         uint64_t total_packets = 0, total_size = 0;
1418
1419         av_log(NULL, AV_LOG_VERBOSE, "Output file #%d (%s):\n",
1420                i, of->ctx->filename);
1421
1422         for (j = 0; j < of->ctx->nb_streams; j++) {
1423             OutputStream *ost = output_streams[of->ost_index + j];
1424             enum AVMediaType type = ost->enc_ctx->codec_type;
1425
1426             total_size    += ost->data_size;
1427             total_packets += ost->packets_written;
1428
1429             av_log(NULL, AV_LOG_VERBOSE, "  Output stream #%d:%d (%s): ",
1430                    i, j, media_type_string(type));
1431             if (ost->encoding_needed) {
1432                 av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" frames encoded",
1433                        ost->frames_encoded);
1434                 if (type == AVMEDIA_TYPE_AUDIO)
1435                     av_log(NULL, AV_LOG_VERBOSE, " (%"PRIu64" samples)", ost->samples_encoded);
1436                 av_log(NULL, AV_LOG_VERBOSE, "; ");
1437             }
1438
1439             av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" packets muxed (%"PRIu64" bytes); ",
1440                    ost->packets_written, ost->data_size);
1441
1442             av_log(NULL, AV_LOG_VERBOSE, "\n");
1443         }
1444
1445         av_log(NULL, AV_LOG_VERBOSE, "  Total: %"PRIu64" packets (%"PRIu64" bytes) muxed\n",
1446                total_packets, total_size);
1447     }
1448     if(video_size + data_size + audio_size + subtitle_size + extra_size == 0){
1449         av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded ");
1450         if (pass1_used) {
1451             av_log(NULL, AV_LOG_WARNING, "\n");
1452         } else {
1453             av_log(NULL, AV_LOG_WARNING, "(check -ss / -t / -frames parameters if used)\n");
1454         }
1455     }
1456 }
1457
1458 static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
1459 {
1460     char buf[1024];
1461     AVBPrint buf_script;
1462     OutputStream *ost;
1463     AVFormatContext *oc;
1464     int64_t total_size;
1465     AVCodecContext *enc;
1466     int frame_number, vid, i;
1467     double bitrate;
1468     int64_t pts = INT64_MIN;
1469     static int64_t last_time = -1;
1470     static int qp_histogram[52];
1471     int hours, mins, secs, us;
1472
1473     if (!print_stats && !is_last_report && !progress_avio)
1474         return;
1475
1476     if (!is_last_report) {
1477         if (last_time == -1) {
1478             last_time = cur_time;
1479             return;
1480         }
1481         if ((cur_time - last_time) < 500000)
1482             return;
1483         last_time = cur_time;
1484     }
1485
1486
1487     oc = output_files[0]->ctx;
1488
1489     total_size = avio_size(oc->pb);
1490     if (total_size <= 0) // FIXME improve avio_size() so it works with non seekable output too
1491         total_size = avio_tell(oc->pb);
1492
1493     buf[0] = '\0';
1494     vid = 0;
1495     av_bprint_init(&buf_script, 0, 1);
1496     for (i = 0; i < nb_output_streams; i++) {
1497         float q = -1;
1498         ost = output_streams[i];
1499         enc = ost->enc_ctx;
1500         if (!ost->stream_copy && enc->coded_frame)
1501             q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
1502         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1503             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1504             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1505                        ost->file_index, ost->index, q);
1506         }
1507         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1508             float fps, t = (cur_time-timer_start) / 1000000.0;
1509
1510             frame_number = ost->frame_number;
1511             fps = t > 1 ? frame_number / t : 0;
1512             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
1513                      frame_number, fps < 9.95, fps, q);
1514             av_bprintf(&buf_script, "frame=%d\n", frame_number);
1515             av_bprintf(&buf_script, "fps=%.1f\n", fps);
1516             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1517                        ost->file_index, ost->index, q);
1518             if (is_last_report)
1519                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1520             if (qp_hist) {
1521                 int j;
1522                 int qp = lrintf(q);
1523                 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
1524                     qp_histogram[qp]++;
1525                 for (j = 0; j < 32; j++)
1526                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log2(qp_histogram[j] + 1)));
1527             }
1528             if ((enc->flags&CODEC_FLAG_PSNR) && (enc->coded_frame || is_last_report)) {
1529                 int j;
1530                 double error, error_sum = 0;
1531                 double scale, scale_sum = 0;
1532                 double p;
1533                 char type[3] = { 'Y','U','V' };
1534                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1535                 for (j = 0; j < 3; j++) {
1536                     if (is_last_report) {
1537                         error = enc->error[j];
1538                         scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
1539                     } else {
1540                         error = enc->coded_frame->error[j];
1541                         scale = enc->width * enc->height * 255.0 * 255.0;
1542                     }
1543                     if (j)
1544                         scale /= 4;
1545                     error_sum += error;
1546                     scale_sum += scale;
1547                     p = psnr(error / scale);
1548                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], p);
1549                     av_bprintf(&buf_script, "stream_%d_%d_psnr_%c=%2.2f\n",
1550                                ost->file_index, ost->index, type[j] | 32, p);
1551                 }
1552                 p = psnr(error_sum / scale_sum);
1553                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
1554                 av_bprintf(&buf_script, "stream_%d_%d_psnr_all=%2.2f\n",
1555                            ost->file_index, ost->index, p);
1556             }
1557             vid = 1;
1558         }
1559         /* compute min output value */
1560         if (av_stream_get_end_pts(ost->st) != AV_NOPTS_VALUE)
1561             pts = FFMAX(pts, av_rescale_q(av_stream_get_end_pts(ost->st),
1562                                           ost->st->time_base, AV_TIME_BASE_Q));
1563         if (is_last_report)
1564             nb_frames_drop += ost->last_droped;
1565     }
1566
1567     secs = FFABS(pts) / AV_TIME_BASE;
1568     us = FFABS(pts) % AV_TIME_BASE;
1569     mins = secs / 60;
1570     secs %= 60;
1571     hours = mins / 60;
1572     mins %= 60;
1573
1574     bitrate = pts && total_size >= 0 ? total_size * 8 / (pts / 1000.0) : -1;
1575
1576     if (total_size < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1577                                  "size=N/A time=");
1578     else                snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1579                                  "size=%8.0fkB time=", total_size / 1024.0);
1580     if (pts < 0)
1581         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "-");
1582     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1583              "%02d:%02d:%02d.%02d ", hours, mins, secs,
1584              (100 * us) / AV_TIME_BASE);
1585
1586     if (bitrate < 0) {
1587         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),"bitrate=N/A");
1588         av_bprintf(&buf_script, "bitrate=N/A\n");
1589     }else{
1590         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),"bitrate=%6.1fkbits/s", bitrate);
1591         av_bprintf(&buf_script, "bitrate=%6.1fkbits/s\n", bitrate);
1592     }
1593
1594     if (total_size < 0) av_bprintf(&buf_script, "total_size=N/A\n");
1595     else                av_bprintf(&buf_script, "total_size=%"PRId64"\n", total_size);
1596     av_bprintf(&buf_script, "out_time_ms=%"PRId64"\n", pts);
1597     av_bprintf(&buf_script, "out_time=%02d:%02d:%02d.%06d\n",
1598                hours, mins, secs, us);
1599
1600     if (nb_frames_dup || nb_frames_drop)
1601         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1602                 nb_frames_dup, nb_frames_drop);
1603     av_bprintf(&buf_script, "dup_frames=%d\n", nb_frames_dup);
1604     av_bprintf(&buf_script, "drop_frames=%d\n", nb_frames_drop);
1605
1606     if (print_stats || is_last_report) {
1607         const char end = is_last_report ? '\n' : '\r';
1608         if (print_stats==1 && AV_LOG_INFO > av_log_get_level()) {
1609             fprintf(stderr, "%s    %c", buf, end);
1610         } else
1611             av_log(NULL, AV_LOG_INFO, "%s    %c", buf, end);
1612
1613     fflush(stderr);
1614     }
1615
1616     if (progress_avio) {
1617         av_bprintf(&buf_script, "progress=%s\n",
1618                    is_last_report ? "end" : "continue");
1619         avio_write(progress_avio, buf_script.str,
1620                    FFMIN(buf_script.len, buf_script.size - 1));
1621         avio_flush(progress_avio);
1622         av_bprint_finalize(&buf_script, NULL);
1623         if (is_last_report) {
1624             avio_closep(&progress_avio);
1625         }
1626     }
1627
1628     if (is_last_report)
1629         print_final_stats(total_size);
1630 }
1631
1632 static void flush_encoders(void)
1633 {
1634     int i, ret;
1635
1636     for (i = 0; i < nb_output_streams; i++) {
1637         OutputStream   *ost = output_streams[i];
1638         AVCodecContext *enc = ost->enc_ctx;
1639         AVFormatContext *os = output_files[ost->file_index]->ctx;
1640         int stop_encoding = 0;
1641
1642         if (!ost->encoding_needed)
1643             continue;
1644
1645         if (enc->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
1646             continue;
1647         if (enc->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == AV_CODEC_ID_RAWVIDEO)
1648             continue;
1649
1650         for (;;) {
1651             int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
1652             const char *desc;
1653
1654             switch (enc->codec_type) {
1655             case AVMEDIA_TYPE_AUDIO:
1656                 encode = avcodec_encode_audio2;
1657                 desc   = "Audio";
1658                 break;
1659             case AVMEDIA_TYPE_VIDEO:
1660                 encode = avcodec_encode_video2;
1661                 desc   = "Video";
1662                 break;
1663             default:
1664                 stop_encoding = 1;
1665             }
1666
1667             if (encode) {
1668                 AVPacket pkt;
1669                 int pkt_size;
1670                 int got_packet;
1671                 av_init_packet(&pkt);
1672                 pkt.data = NULL;
1673                 pkt.size = 0;
1674
1675                 update_benchmark(NULL);
1676                 ret = encode(enc, &pkt, NULL, &got_packet);
1677                 update_benchmark("flush %s %d.%d", desc, ost->file_index, ost->index);
1678                 if (ret < 0) {
1679                     av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
1680                     exit_program(1);
1681                 }
1682                 if (ost->logfile && enc->stats_out) {
1683                     fprintf(ost->logfile, "%s", enc->stats_out);
1684                 }
1685                 if (!got_packet) {
1686                     stop_encoding = 1;
1687                     break;
1688                 }
1689                 if (ost->finished & MUXER_FINISHED) {
1690                     av_free_packet(&pkt);
1691                     continue;
1692                 }
1693                 av_packet_rescale_ts(&pkt, enc->time_base, ost->st->time_base);
1694                 pkt_size = pkt.size;
1695                 write_frame(os, &pkt, ost);
1696                 if (ost->enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO && vstats_filename) {
1697                     do_video_stats(ost, pkt_size);
1698                 }
1699             }
1700
1701             if (stop_encoding)
1702                 break;
1703         }
1704     }
1705 }
1706
1707 /*
1708  * Check whether a packet from ist should be written into ost at this time
1709  */
1710 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1711 {
1712     OutputFile *of = output_files[ost->file_index];
1713     int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
1714
1715     if (ost->source_index != ist_index)
1716         return 0;
1717
1718     if (ost->finished)
1719         return 0;
1720
1721     if (of->start_time != AV_NOPTS_VALUE && ist->pts < of->start_time)
1722         return 0;
1723
1724     return 1;
1725 }
1726
1727 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1728 {
1729     OutputFile *of = output_files[ost->file_index];
1730     InputFile   *f = input_files [ist->file_index];
1731     int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
1732     int64_t ost_tb_start_time = av_rescale_q(start_time, AV_TIME_BASE_Q, ost->st->time_base);
1733     int64_t ist_tb_start_time = av_rescale_q(start_time, AV_TIME_BASE_Q, ist->st->time_base);
1734     AVPicture pict;
1735     AVPacket opkt;
1736
1737     av_init_packet(&opkt);
1738
1739     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1740         !ost->copy_initial_nonkeyframes)
1741         return;
1742
1743     if (pkt->pts == AV_NOPTS_VALUE) {
1744         if (!ost->frame_number && ist->pts < start_time &&
1745             !ost->copy_prior_start)
1746             return;
1747     } else {
1748         if (!ost->frame_number && pkt->pts < ist_tb_start_time &&
1749             !ost->copy_prior_start)
1750             return;
1751     }
1752
1753     if (of->recording_time != INT64_MAX &&
1754         ist->pts >= of->recording_time + start_time) {
1755         close_output_stream(ost);
1756         return;
1757     }
1758
1759     if (f->recording_time != INT64_MAX) {
1760         start_time = f->ctx->start_time;
1761         if (f->start_time != AV_NOPTS_VALUE)
1762             start_time += f->start_time;
1763         if (ist->pts >= f->recording_time + start_time) {
1764             close_output_stream(ost);
1765             return;
1766         }
1767     }
1768
1769     /* force the input stream PTS */
1770     if (ost->enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO)
1771         ost->sync_opts++;
1772
1773     if (pkt->pts != AV_NOPTS_VALUE)
1774         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1775     else
1776         opkt.pts = AV_NOPTS_VALUE;
1777
1778     if (pkt->dts == AV_NOPTS_VALUE)
1779         opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
1780     else
1781         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1782     opkt.dts -= ost_tb_start_time;
1783
1784     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && pkt->dts != AV_NOPTS_VALUE) {
1785         int duration = av_get_audio_frame_duration(ist->dec_ctx, pkt->size);
1786         if(!duration)
1787             duration = ist->dec_ctx->frame_size;
1788         opkt.dts = opkt.pts = av_rescale_delta(ist->st->time_base, pkt->dts,
1789                                                (AVRational){1, ist->dec_ctx->sample_rate}, duration, &ist->filter_in_rescale_delta_last,
1790                                                ost->st->time_base) - ost_tb_start_time;
1791     }
1792
1793     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1794     opkt.flags    = pkt->flags;
1795
1796     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1797     if (  ost->enc_ctx->codec_id != AV_CODEC_ID_H264
1798        && ost->enc_ctx->codec_id != AV_CODEC_ID_MPEG1VIDEO
1799        && ost->enc_ctx->codec_id != AV_CODEC_ID_MPEG2VIDEO
1800        && ost->enc_ctx->codec_id != AV_CODEC_ID_VC1
1801        ) {
1802         if (av_parser_change(ost->parser, ost->st->codec,
1803                              &opkt.data, &opkt.size,
1804                              pkt->data, pkt->size,
1805                              pkt->flags & AV_PKT_FLAG_KEY)) {
1806             opkt.buf = av_buffer_create(opkt.data, opkt.size, av_buffer_default_free, NULL, 0);
1807             if (!opkt.buf)
1808                 exit_program(1);
1809         }
1810     } else {
1811         opkt.data = pkt->data;
1812         opkt.size = pkt->size;
1813     }
1814     av_copy_packet_side_data(&opkt, pkt);
1815
1816     if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (of->ctx->oformat->flags & AVFMT_RAWPICTURE)) {
1817         /* store AVPicture in AVPacket, as expected by the output format */
1818         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1819         opkt.data = (uint8_t *)&pict;
1820         opkt.size = sizeof(AVPicture);
1821         opkt.flags |= AV_PKT_FLAG_KEY;
1822     }
1823
1824     write_frame(of->ctx, &opkt, ost);
1825 }
1826
1827 int guess_input_channel_layout(InputStream *ist)
1828 {
1829     AVCodecContext *dec = ist->dec_ctx;
1830
1831     if (!dec->channel_layout) {
1832         char layout_name[256];
1833
1834         if (dec->channels > ist->guess_layout_max)
1835             return 0;
1836         dec->channel_layout = av_get_default_channel_layout(dec->channels);
1837         if (!dec->channel_layout)
1838             return 0;
1839         av_get_channel_layout_string(layout_name, sizeof(layout_name),
1840                                      dec->channels, dec->channel_layout);
1841         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for  Input Stream "
1842                "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
1843     }
1844     return 1;
1845 }
1846
1847 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1848 {
1849     AVFrame *decoded_frame, *f;
1850     AVCodecContext *avctx = ist->dec_ctx;
1851     int i, ret, err = 0, resample_changed;
1852     AVRational decoded_frame_tb;
1853
1854     if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
1855         return AVERROR(ENOMEM);
1856     if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1857         return AVERROR(ENOMEM);
1858     decoded_frame = ist->decoded_frame;
1859
1860     update_benchmark(NULL);
1861     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1862     update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
1863
1864     if (ret >= 0 && avctx->sample_rate <= 0) {
1865         av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
1866         ret = AVERROR_INVALIDDATA;
1867     }
1868
1869     if (*got_output || ret<0 || pkt->size)
1870         decode_error_stat[ret<0] ++;
1871
1872     if (!*got_output || ret < 0) {
1873         if (!pkt->size) {
1874             for (i = 0; i < ist->nb_filters; i++)
1875 #if 1
1876                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1877 #else
1878                 av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
1879 #endif
1880         }
1881         return ret;
1882     }
1883
1884     ist->samples_decoded += decoded_frame->nb_samples;
1885     ist->frames_decoded++;
1886
1887 #if 1
1888     /* increment next_dts to use for the case where the input stream does not
1889        have timestamps or there are multiple frames in the packet */
1890     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1891                      avctx->sample_rate;
1892     ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1893                      avctx->sample_rate;
1894 #endif
1895
1896     resample_changed = ist->resample_sample_fmt     != decoded_frame->format         ||
1897                        ist->resample_channels       != avctx->channels               ||
1898                        ist->resample_channel_layout != decoded_frame->channel_layout ||
1899                        ist->resample_sample_rate    != decoded_frame->sample_rate;
1900     if (resample_changed) {
1901         char layout1[64], layout2[64];
1902
1903         if (!guess_input_channel_layout(ist)) {
1904             av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
1905                    "layout for Input Stream #%d.%d\n", ist->file_index,
1906                    ist->st->index);
1907             exit_program(1);
1908         }
1909         decoded_frame->channel_layout = avctx->channel_layout;
1910
1911         av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
1912                                      ist->resample_channel_layout);
1913         av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
1914                                      decoded_frame->channel_layout);
1915
1916         av_log(NULL, AV_LOG_INFO,
1917                "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",
1918                ist->file_index, ist->st->index,
1919                ist->resample_sample_rate,  av_get_sample_fmt_name(ist->resample_sample_fmt),
1920                ist->resample_channels, layout1,
1921                decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
1922                avctx->channels, layout2);
1923
1924         ist->resample_sample_fmt     = decoded_frame->format;
1925         ist->resample_sample_rate    = decoded_frame->sample_rate;
1926         ist->resample_channel_layout = decoded_frame->channel_layout;
1927         ist->resample_channels       = avctx->channels;
1928
1929         for (i = 0; i < nb_filtergraphs; i++)
1930             if (ist_in_filtergraph(filtergraphs[i], ist)) {
1931                 FilterGraph *fg = filtergraphs[i];
1932                 if (configure_filtergraph(fg) < 0) {
1933                     av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1934                     exit_program(1);
1935                 }
1936             }
1937     }
1938
1939     /* if the decoder provides a pts, use it instead of the last packet pts.
1940        the decoder could be delaying output by a packet or more. */
1941     if (decoded_frame->pts != AV_NOPTS_VALUE) {
1942         ist->dts = ist->next_dts = ist->pts = ist->next_pts = av_rescale_q(decoded_frame->pts, avctx->time_base, AV_TIME_BASE_Q);
1943         decoded_frame_tb   = avctx->time_base;
1944     } else if (decoded_frame->pkt_pts != AV_NOPTS_VALUE) {
1945         decoded_frame->pts = decoded_frame->pkt_pts;
1946         decoded_frame_tb   = ist->st->time_base;
1947     } else if (pkt->pts != AV_NOPTS_VALUE) {
1948         decoded_frame->pts = pkt->pts;
1949         decoded_frame_tb   = ist->st->time_base;
1950     }else {
1951         decoded_frame->pts = ist->dts;
1952         decoded_frame_tb   = AV_TIME_BASE_Q;
1953     }
1954     pkt->pts           = AV_NOPTS_VALUE;
1955     if (decoded_frame->pts != AV_NOPTS_VALUE)
1956         decoded_frame->pts = av_rescale_delta(decoded_frame_tb, decoded_frame->pts,
1957                                               (AVRational){1, avctx->sample_rate}, decoded_frame->nb_samples, &ist->filter_in_rescale_delta_last,
1958                                               (AVRational){1, avctx->sample_rate});
1959     for (i = 0; i < ist->nb_filters; i++) {
1960         if (i < ist->nb_filters - 1) {
1961             f = ist->filter_frame;
1962             err = av_frame_ref(f, decoded_frame);
1963             if (err < 0)
1964                 break;
1965         } else
1966             f = decoded_frame;
1967         err = av_buffersrc_add_frame_flags(ist->filters[i]->filter, f,
1968                                      AV_BUFFERSRC_FLAG_PUSH);
1969         if (err == AVERROR_EOF)
1970             err = 0; /* ignore */
1971         if (err < 0)
1972             break;
1973     }
1974     decoded_frame->pts = AV_NOPTS_VALUE;
1975
1976     av_frame_unref(ist->filter_frame);
1977     av_frame_unref(decoded_frame);
1978     return err < 0 ? err : ret;
1979 }
1980
1981 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
1982 {
1983     AVFrame *decoded_frame, *f;
1984     int i, ret = 0, err = 0, resample_changed;
1985     int64_t best_effort_timestamp;
1986     AVRational *frame_sample_aspect;
1987
1988     if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
1989         return AVERROR(ENOMEM);
1990     if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1991         return AVERROR(ENOMEM);
1992     decoded_frame = ist->decoded_frame;
1993     pkt->dts  = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
1994
1995     update_benchmark(NULL);
1996     ret = avcodec_decode_video2(ist->dec_ctx,
1997                                 decoded_frame, got_output, pkt);
1998     update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
1999
2000     // The following line may be required in some cases where there is no parser
2001     // or the parser does not has_b_frames correctly
2002     if (ist->st->codec->has_b_frames < ist->dec_ctx->has_b_frames) {
2003         if (ist->dec_ctx->codec_id == AV_CODEC_ID_H264) {
2004             ist->st->codec->has_b_frames = ist->dec_ctx->has_b_frames;
2005         } else
2006             av_log_ask_for_sample(
2007                 ist->dec_ctx,
2008                 "has_b_frames is larger in decoder than demuxer %d > %d ",
2009                 ist->dec_ctx->has_b_frames,
2010                 ist->st->codec->has_b_frames
2011             );
2012     }
2013
2014     if (*got_output || ret<0 || pkt->size)
2015         decode_error_stat[ret<0] ++;
2016
2017     if (*got_output && ret >= 0) {
2018         if (ist->dec_ctx->width  != decoded_frame->width ||
2019             ist->dec_ctx->height != decoded_frame->height ||
2020             ist->dec_ctx->pix_fmt != decoded_frame->format) {
2021             av_log(NULL, AV_LOG_DEBUG, "Frame parameters mismatch context %d,%d,%d != %d,%d,%d\n",
2022                 decoded_frame->width,
2023                 decoded_frame->height,
2024                 decoded_frame->format,
2025                 ist->dec_ctx->width,
2026                 ist->dec_ctx->height,
2027                 ist->dec_ctx->pix_fmt);
2028         }
2029     }
2030
2031     if (!*got_output || ret < 0) {
2032         if (!pkt->size) {
2033             for (i = 0; i < ist->nb_filters; i++)
2034 #if 1
2035                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
2036 #else
2037                 av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
2038 #endif
2039         }
2040         return ret;
2041     }
2042
2043     if(ist->top_field_first>=0)
2044         decoded_frame->top_field_first = ist->top_field_first;
2045
2046     ist->frames_decoded++;
2047
2048     if (ist->hwaccel_retrieve_data && decoded_frame->format == ist->hwaccel_pix_fmt) {
2049         err = ist->hwaccel_retrieve_data(ist->dec_ctx, decoded_frame);
2050         if (err < 0)
2051             goto fail;
2052     }
2053     ist->hwaccel_retrieved_pix_fmt = decoded_frame->format;
2054
2055     best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
2056     if(best_effort_timestamp != AV_NOPTS_VALUE)
2057         ist->next_pts = ist->pts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);
2058
2059     if (debug_ts) {
2060         av_log(NULL, AV_LOG_INFO, "decoder -> ist_index:%d type:video "
2061                "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",
2062                ist->st->index, av_ts2str(decoded_frame->pts),
2063                av_ts2timestr(decoded_frame->pts, &ist->st->time_base),
2064                best_effort_timestamp,
2065                av_ts2timestr(best_effort_timestamp, &ist->st->time_base),
2066                decoded_frame->key_frame, decoded_frame->pict_type,
2067                ist->st->time_base.num, ist->st->time_base.den);
2068     }
2069
2070     pkt->size = 0;
2071
2072     if (ist->st->sample_aspect_ratio.num)
2073         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
2074
2075     resample_changed = ist->resample_width   != decoded_frame->width  ||
2076                        ist->resample_height  != decoded_frame->height ||
2077                        ist->resample_pix_fmt != decoded_frame->format;
2078     if (resample_changed) {
2079         av_log(NULL, AV_LOG_INFO,
2080                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
2081                ist->file_index, ist->st->index,
2082                ist->resample_width,  ist->resample_height,  av_get_pix_fmt_name(ist->resample_pix_fmt),
2083                decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
2084
2085         ist->resample_width   = decoded_frame->width;
2086         ist->resample_height  = decoded_frame->height;
2087         ist->resample_pix_fmt = decoded_frame->format;
2088
2089         for (i = 0; i < nb_filtergraphs; i++) {
2090             if (ist_in_filtergraph(filtergraphs[i], ist) && ist->reinit_filters &&
2091                 configure_filtergraph(filtergraphs[i]) < 0) {
2092                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
2093                 exit_program(1);
2094             }
2095         }
2096     }
2097
2098     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
2099     for (i = 0; i < ist->nb_filters; i++) {
2100         if (!frame_sample_aspect->num)
2101             *frame_sample_aspect = ist->st->sample_aspect_ratio;
2102
2103         if (i < ist->nb_filters - 1) {
2104             f = ist->filter_frame;
2105             err = av_frame_ref(f, decoded_frame);
2106             if (err < 0)
2107                 break;
2108         } else
2109             f = decoded_frame;
2110         ret = av_buffersrc_add_frame_flags(ist->filters[i]->filter, f, AV_BUFFERSRC_FLAG_PUSH);
2111         if (ret == AVERROR_EOF) {
2112             ret = 0; /* ignore */
2113         } else if (ret < 0) {
2114             av_log(NULL, AV_LOG_FATAL,
2115                    "Failed to inject frame into filter network: %s\n", av_err2str(ret));
2116             exit_program(1);
2117         }
2118     }
2119
2120 fail:
2121     av_frame_unref(ist->filter_frame);
2122     av_frame_unref(decoded_frame);
2123     return err < 0 ? err : ret;
2124 }
2125
2126 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
2127 {
2128     AVSubtitle subtitle;
2129     int i, ret = avcodec_decode_subtitle2(ist->dec_ctx,
2130                                           &subtitle, got_output, pkt);
2131
2132     if (*got_output || ret<0 || pkt->size)
2133         decode_error_stat[ret<0] ++;
2134
2135     if (ret < 0 || !*got_output) {
2136         if (!pkt->size)
2137             sub2video_flush(ist);
2138         return ret;
2139     }
2140
2141     if (ist->fix_sub_duration) {
2142         int end = 1;
2143         if (ist->prev_sub.got_output) {
2144             end = av_rescale(subtitle.pts - ist->prev_sub.subtitle.pts,
2145                              1000, AV_TIME_BASE);
2146             if (end < ist->prev_sub.subtitle.end_display_time) {
2147                 av_log(ist->dec_ctx, AV_LOG_DEBUG,
2148                        "Subtitle duration reduced from %d to %d%s\n",
2149                        ist->prev_sub.subtitle.end_display_time, end,
2150                        end <= 0 ? ", dropping it" : "");
2151                 ist->prev_sub.subtitle.end_display_time = end;
2152             }
2153         }
2154         FFSWAP(int,        *got_output, ist->prev_sub.got_output);
2155         FFSWAP(int,        ret,         ist->prev_sub.ret);
2156         FFSWAP(AVSubtitle, subtitle,    ist->prev_sub.subtitle);
2157         if (end <= 0)
2158             goto out;
2159     }
2160
2161     if (!*got_output)
2162         return ret;
2163
2164     sub2video_update(ist, &subtitle);
2165
2166     if (!subtitle.num_rects)
2167         goto out;
2168
2169     ist->frames_decoded++;
2170
2171     for (i = 0; i < nb_output_streams; i++) {
2172         OutputStream *ost = output_streams[i];
2173
2174         if (!check_output_constraints(ist, ost) || !ost->encoding_needed
2175             || ost->enc->type != AVMEDIA_TYPE_SUBTITLE)
2176             continue;
2177
2178         do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle);
2179     }
2180
2181 out:
2182     avsubtitle_free(&subtitle);
2183     return ret;
2184 }
2185
2186 /* pkt = NULL means EOF (needed to flush decoder buffers) */
2187 static int process_input_packet(InputStream *ist, const AVPacket *pkt)
2188 {
2189     int ret = 0, i;
2190     int got_output = 0;
2191
2192     AVPacket avpkt;
2193     if (!ist->saw_first_ts) {
2194         ist->dts = ist->st->avg_frame_rate.num ? - ist->dec_ctx->has_b_frames * AV_TIME_BASE / av_q2d(ist->st->avg_frame_rate) : 0;
2195         ist->pts = 0;
2196         if (pkt && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
2197             ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
2198             ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
2199         }
2200         ist->saw_first_ts = 1;
2201     }
2202
2203     if (ist->next_dts == AV_NOPTS_VALUE)
2204         ist->next_dts = ist->dts;
2205     if (ist->next_pts == AV_NOPTS_VALUE)
2206         ist->next_pts = ist->pts;
2207
2208     if (!pkt) {
2209         /* EOF handling */
2210         av_init_packet(&avpkt);
2211         avpkt.data = NULL;
2212         avpkt.size = 0;
2213         goto handle_eof;
2214     } else {
2215         avpkt = *pkt;
2216     }
2217
2218     if (pkt->dts != AV_NOPTS_VALUE) {
2219         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2220         if (ist->dec_ctx->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
2221             ist->next_pts = ist->pts = ist->dts;
2222     }
2223
2224     // while we have more to decode or while the decoder did output something on EOF
2225     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
2226         int duration;
2227     handle_eof:
2228
2229         ist->pts = ist->next_pts;
2230         ist->dts = ist->next_dts;
2231
2232         if (avpkt.size && avpkt.size != pkt->size &&
2233             !(ist->dec->capabilities & CODEC_CAP_SUBFRAMES)) {
2234             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
2235                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
2236             ist->showed_multi_packet_warning = 1;
2237         }
2238
2239         switch (ist->dec_ctx->codec_type) {
2240         case AVMEDIA_TYPE_AUDIO:
2241             ret = decode_audio    (ist, &avpkt, &got_output);
2242             break;
2243         case AVMEDIA_TYPE_VIDEO:
2244             ret = decode_video    (ist, &avpkt, &got_output);
2245             if (avpkt.duration) {
2246                 duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
2247             } else if(ist->dec_ctx->framerate.num != 0 && ist->dec_ctx->framerate.den != 0) {
2248                 int ticks= av_stream_get_parser(ist->st) ? av_stream_get_parser(ist->st)->repeat_pict+1 : ist->dec_ctx->ticks_per_frame;
2249                 duration = ((int64_t)AV_TIME_BASE *
2250                                 ist->dec_ctx->framerate.den * ticks) /
2251                                 ist->dec_ctx->framerate.num / ist->dec_ctx->ticks_per_frame;
2252             } else
2253                 duration = 0;
2254
2255             if(ist->dts != AV_NOPTS_VALUE && duration) {
2256                 ist->next_dts += duration;
2257             }else
2258                 ist->next_dts = AV_NOPTS_VALUE;
2259
2260             if (got_output)
2261                 ist->next_pts += duration; //FIXME the duration is not correct in some cases
2262             break;
2263         case AVMEDIA_TYPE_SUBTITLE:
2264             ret = transcode_subtitles(ist, &avpkt, &got_output);
2265             break;
2266         default:
2267             return -1;
2268         }
2269
2270         if (ret < 0)
2271             return ret;
2272
2273         avpkt.dts=
2274         avpkt.pts= AV_NOPTS_VALUE;
2275
2276         // touch data and size only if not EOF
2277         if (pkt) {
2278             if(ist->dec_ctx->codec_type != AVMEDIA_TYPE_AUDIO)
2279                 ret = avpkt.size;
2280             avpkt.data += ret;
2281             avpkt.size -= ret;
2282         }
2283         if (!got_output) {
2284             continue;
2285         }
2286         if (got_output && !pkt)
2287             break;
2288     }
2289
2290     /* handle stream copy */
2291     if (!ist->decoding_needed) {
2292         ist->dts = ist->next_dts;
2293         switch (ist->dec_ctx->codec_type) {
2294         case AVMEDIA_TYPE_AUDIO:
2295             ist->next_dts += ((int64_t)AV_TIME_BASE * ist->dec_ctx->frame_size) /
2296                              ist->dec_ctx->sample_rate;
2297             break;
2298         case AVMEDIA_TYPE_VIDEO:
2299             if (ist->framerate.num) {
2300                 // TODO: Remove work-around for c99-to-c89 issue 7
2301                 AVRational time_base_q = AV_TIME_BASE_Q;
2302                 int64_t next_dts = av_rescale_q(ist->next_dts, time_base_q, av_inv_q(ist->framerate));
2303                 ist->next_dts = av_rescale_q(next_dts + 1, av_inv_q(ist->framerate), time_base_q);
2304             } else if (pkt->duration) {
2305                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
2306             } else if(ist->dec_ctx->framerate.num != 0) {
2307                 int ticks= av_stream_get_parser(ist->st) ? av_stream_get_parser(ist->st)->repeat_pict + 1 : ist->dec_ctx->ticks_per_frame;
2308                 ist->next_dts += ((int64_t)AV_TIME_BASE *
2309                                   ist->dec_ctx->framerate.den * ticks) /
2310                                   ist->dec_ctx->framerate.num / ist->dec_ctx->ticks_per_frame;
2311             }
2312             break;
2313         }
2314         ist->pts = ist->dts;
2315         ist->next_pts = ist->next_dts;
2316     }
2317     for (i = 0; pkt && i < nb_output_streams; i++) {
2318         OutputStream *ost = output_streams[i];
2319
2320         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
2321             continue;
2322
2323         do_streamcopy(ist, ost, pkt);
2324     }
2325
2326     return got_output;
2327 }
2328
2329 static void print_sdp(void)
2330 {
2331     char sdp[16384];
2332     int i;
2333     int j;
2334     AVIOContext *sdp_pb;
2335     AVFormatContext **avc = av_malloc_array(nb_output_files, sizeof(*avc));
2336
2337     if (!avc)
2338         exit_program(1);
2339     for (i = 0, j = 0; i < nb_output_files; i++) {
2340         if (!strcmp(output_files[i]->ctx->oformat->name, "rtp")) {
2341             avc[j] = output_files[i]->ctx;
2342             j++;
2343         }
2344     }
2345
2346     av_sdp_create(avc, j, sdp, sizeof(sdp));
2347
2348     if (!sdp_filename) {
2349         printf("SDP:\n%s\n", sdp);
2350         fflush(stdout);
2351     } else {
2352         if (avio_open2(&sdp_pb, sdp_filename, AVIO_FLAG_WRITE, &int_cb, NULL) < 0) {
2353             av_log(NULL, AV_LOG_ERROR, "Failed to open sdp file '%s'\n", sdp_filename);
2354         } else {
2355             avio_printf(sdp_pb, "SDP:\n%s", sdp);
2356             avio_closep(&sdp_pb);
2357             av_freep(&sdp_filename);
2358         }
2359     }
2360
2361     av_freep(&avc);
2362 }
2363
2364 static const HWAccel *get_hwaccel(enum AVPixelFormat pix_fmt)
2365 {
2366     int i;
2367     for (i = 0; hwaccels[i].name; i++)
2368         if (hwaccels[i].pix_fmt == pix_fmt)
2369             return &hwaccels[i];
2370     return NULL;
2371 }
2372
2373 static enum AVPixelFormat get_format(AVCodecContext *s, const enum AVPixelFormat *pix_fmts)
2374 {
2375     InputStream *ist = s->opaque;
2376     const enum AVPixelFormat *p;
2377     int ret;
2378
2379     for (p = pix_fmts; *p != -1; p++) {
2380         const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(*p);
2381         const HWAccel *hwaccel;
2382
2383         if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL))
2384             break;
2385
2386         hwaccel = get_hwaccel(*p);
2387         if (!hwaccel ||
2388             (ist->active_hwaccel_id && ist->active_hwaccel_id != hwaccel->id) ||
2389             (ist->hwaccel_id != HWACCEL_AUTO && ist->hwaccel_id != hwaccel->id))
2390             continue;
2391
2392         ret = hwaccel->init(s);
2393         if (ret < 0) {
2394             if (ist->hwaccel_id == hwaccel->id) {
2395                 av_log(NULL, AV_LOG_FATAL,
2396                        "%s hwaccel requested for input stream #%d:%d, "
2397                        "but cannot be initialized.\n", hwaccel->name,
2398                        ist->file_index, ist->st->index);
2399                 return AV_PIX_FMT_NONE;
2400             }
2401             continue;
2402         }
2403         ist->active_hwaccel_id = hwaccel->id;
2404         ist->hwaccel_pix_fmt   = *p;
2405         break;
2406     }
2407
2408     return *p;
2409 }
2410
2411 static int get_buffer(AVCodecContext *s, AVFrame *frame, int flags)
2412 {
2413     InputStream *ist = s->opaque;
2414
2415     if (ist->hwaccel_get_buffer && frame->format == ist->hwaccel_pix_fmt)
2416         return ist->hwaccel_get_buffer(s, frame, flags);
2417
2418     return avcodec_default_get_buffer2(s, frame, flags);
2419 }
2420
2421 static int init_input_stream(int ist_index, char *error, int error_len)
2422 {
2423     int ret;
2424     InputStream *ist = input_streams[ist_index];
2425
2426     if (ist->decoding_needed) {
2427         AVCodec *codec = ist->dec;
2428         if (!codec) {
2429             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
2430                     avcodec_get_name(ist->dec_ctx->codec_id), ist->file_index, ist->st->index);
2431             return AVERROR(EINVAL);
2432         }
2433
2434         ist->dec_ctx->opaque                = ist;
2435         ist->dec_ctx->get_format            = get_format;
2436         ist->dec_ctx->get_buffer2           = get_buffer;
2437         ist->dec_ctx->thread_safe_callbacks = 1;
2438
2439         av_opt_set_int(ist->dec_ctx, "refcounted_frames", 1, 0);
2440         if (ist->dec_ctx->codec_id == AV_CODEC_ID_DVB_SUBTITLE &&
2441            (ist->decoding_needed & DECODING_FOR_OST)) {
2442             av_dict_set(&ist->decoder_opts, "compute_edt", "1", AV_DICT_DONT_OVERWRITE);
2443             if (ist->decoding_needed & DECODING_FOR_FILTER)
2444                 av_log(NULL, AV_LOG_WARNING, "Warning using DVB subtitles for filtering and output at the same time is not fully supported, also see -compute_edt [0|1]\n");
2445         }
2446
2447         if (!av_dict_get(ist->decoder_opts, "threads", NULL, 0))
2448             av_dict_set(&ist->decoder_opts, "threads", "auto", 0);
2449         if ((ret = avcodec_open2(ist->dec_ctx, codec, &ist->decoder_opts)) < 0) {
2450             if (ret == AVERROR_EXPERIMENTAL)
2451                 abort_codec_experimental(codec, 0);
2452
2453             snprintf(error, error_len,
2454                      "Error while opening decoder for input stream "
2455                      "#%d:%d : %s",
2456                      ist->file_index, ist->st->index, av_err2str(ret));
2457             return ret;
2458         }
2459         assert_avoptions(ist->decoder_opts);
2460     }
2461
2462     ist->next_pts = AV_NOPTS_VALUE;
2463     ist->next_dts = AV_NOPTS_VALUE;
2464
2465     return 0;
2466 }
2467
2468 static InputStream *get_input_stream(OutputStream *ost)
2469 {
2470     if (ost->source_index >= 0)
2471         return input_streams[ost->source_index];
2472     return NULL;
2473 }
2474
2475 static int compare_int64(const void *a, const void *b)
2476 {
2477     int64_t va = *(int64_t *)a, vb = *(int64_t *)b;
2478     return va < vb ? -1 : va > vb ? +1 : 0;
2479 }
2480
2481 static void parse_forced_key_frames(char *kf, OutputStream *ost,
2482                                     AVCodecContext *avctx)
2483 {
2484     char *p;
2485     int n = 1, i, size, index = 0;
2486     int64_t t, *pts;
2487
2488     for (p = kf; *p; p++)
2489         if (*p == ',')
2490             n++;
2491     size = n;
2492     pts = av_malloc_array(size, sizeof(*pts));
2493     if (!pts) {
2494         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
2495         exit_program(1);
2496     }
2497
2498     p = kf;
2499     for (i = 0; i < n; i++) {
2500         char *next = strchr(p, ',');
2501
2502         if (next)
2503             *next++ = 0;
2504
2505         if (!memcmp(p, "chapters", 8)) {
2506
2507             AVFormatContext *avf = output_files[ost->file_index]->ctx;
2508             int j;
2509
2510             if (avf->nb_chapters > INT_MAX - size ||
2511                 !(pts = av_realloc_f(pts, size += avf->nb_chapters - 1,
2512                                      sizeof(*pts)))) {
2513                 av_log(NULL, AV_LOG_FATAL,
2514                        "Could not allocate forced key frames array.\n");
2515                 exit_program(1);
2516             }
2517             t = p[8] ? parse_time_or_die("force_key_frames", p + 8, 1) : 0;
2518             t = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
2519
2520             for (j = 0; j < avf->nb_chapters; j++) {
2521                 AVChapter *c = avf->chapters[j];
2522                 av_assert1(index < size);
2523                 pts[index++] = av_rescale_q(c->start, c->time_base,
2524                                             avctx->time_base) + t;
2525             }
2526
2527         } else {
2528
2529             t = parse_time_or_die("force_key_frames", p, 1);
2530             av_assert1(index < size);
2531             pts[index++] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
2532
2533         }
2534
2535         p = next;
2536     }
2537
2538     av_assert0(index == size);
2539     qsort(pts, size, sizeof(*pts), compare_int64);
2540     ost->forced_kf_count = size;
2541     ost->forced_kf_pts   = pts;
2542 }
2543
2544 static void report_new_stream(int input_index, AVPacket *pkt)
2545 {
2546     InputFile *file = input_files[input_index];
2547     AVStream *st = file->ctx->streams[pkt->stream_index];
2548
2549     if (pkt->stream_index < file->nb_streams_warn)
2550         return;
2551     av_log(file->ctx, AV_LOG_WARNING,
2552            "New %s stream %d:%d at pos:%"PRId64" and DTS:%ss\n",
2553            av_get_media_type_string(st->codec->codec_type),
2554            input_index, pkt->stream_index,
2555            pkt->pos, av_ts2timestr(pkt->dts, &st->time_base));
2556     file->nb_streams_warn = pkt->stream_index + 1;
2557 }
2558
2559 static void set_encoder_id(OutputFile *of, OutputStream *ost)
2560 {
2561     AVDictionaryEntry *e;
2562
2563     uint8_t *encoder_string;
2564     int encoder_string_len;
2565     int format_flags = 0;
2566     int codec_flags = 0;
2567
2568     if (av_dict_get(ost->st->metadata, "encoder",  NULL, 0))
2569         return;
2570
2571     e = av_dict_get(of->opts, "fflags", NULL, 0);
2572     if (e) {
2573         const AVOption *o = av_opt_find(of->ctx, "fflags", NULL, 0, 0);
2574         if (!o)
2575             return;
2576         av_opt_eval_flags(of->ctx, o, e->value, &format_flags);
2577     }
2578     e = av_dict_get(ost->encoder_opts, "flags", NULL, 0);
2579     if (e) {
2580         const AVOption *o = av_opt_find(ost->enc_ctx, "flags", NULL, 0, 0);
2581         if (!o)
2582             return;
2583         av_opt_eval_flags(ost->enc_ctx, o, e->value, &codec_flags);
2584     }
2585
2586     encoder_string_len = sizeof(LIBAVCODEC_IDENT) + strlen(ost->enc->name) + 2;
2587     encoder_string     = av_mallocz(encoder_string_len);
2588     if (!encoder_string)
2589         exit_program(1);
2590
2591     if (!(format_flags & AVFMT_FLAG_BITEXACT) && !(codec_flags & CODEC_FLAG_BITEXACT))
2592         av_strlcpy(encoder_string, LIBAVCODEC_IDENT " ", encoder_string_len);
2593     else
2594         av_strlcpy(encoder_string, "Lavc ", encoder_string_len);
2595     av_strlcat(encoder_string, ost->enc->name, encoder_string_len);
2596     av_dict_set(&ost->st->metadata, "encoder",  encoder_string,
2597                 AV_DICT_DONT_STRDUP_VAL | AV_DICT_DONT_OVERWRITE);
2598 }
2599
2600 static int transcode_init(void)
2601 {
2602     int ret = 0, i, j, k;
2603     AVFormatContext *oc;
2604     OutputStream *ost;
2605     InputStream *ist;
2606     char error[1024] = {0};
2607     int want_sdp = 1;
2608
2609     for (i = 0; i < nb_filtergraphs; i++) {
2610         FilterGraph *fg = filtergraphs[i];
2611         for (j = 0; j < fg->nb_outputs; j++) {
2612             OutputFilter *ofilter = fg->outputs[j];
2613             if (!ofilter->ost || ofilter->ost->source_index >= 0)
2614                 continue;
2615             if (fg->nb_inputs != 1)
2616                 continue;
2617             for (k = nb_input_streams-1; k >= 0 ; k--)
2618                 if (fg->inputs[0]->ist == input_streams[k])
2619                     break;
2620             ofilter->ost->source_index = k;
2621         }
2622     }
2623
2624     /* init framerate emulation */
2625     for (i = 0; i < nb_input_files; i++) {
2626         InputFile *ifile = input_files[i];
2627         if (ifile->rate_emu)
2628             for (j = 0; j < ifile->nb_streams; j++)
2629                 input_streams[j + ifile->ist_index]->start = av_gettime_relative();
2630     }
2631
2632     /* output stream init */
2633     for (i = 0; i < nb_output_files; i++) {
2634         oc = output_files[i]->ctx;
2635         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2636             av_dump_format(oc, i, oc->filename, 1);
2637             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2638             return AVERROR(EINVAL);
2639         }
2640     }
2641
2642     /* init complex filtergraphs */
2643     for (i = 0; i < nb_filtergraphs; i++)
2644         if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
2645             return ret;
2646
2647     /* for each output stream, we compute the right encoding parameters */
2648     for (i = 0; i < nb_output_streams; i++) {
2649         AVCodecContext *enc_ctx;
2650         AVCodecContext *dec_ctx = NULL;
2651         ost = output_streams[i];
2652         oc  = output_files[ost->file_index]->ctx;
2653         ist = get_input_stream(ost);
2654
2655         if (ost->attachment_filename)
2656             continue;
2657
2658         enc_ctx = ost->stream_copy ? ost->st->codec : ost->enc_ctx;
2659
2660         if (ist) {
2661             dec_ctx = ist->dec_ctx;
2662
2663             ost->st->disposition          = ist->st->disposition;
2664             enc_ctx->bits_per_raw_sample    = dec_ctx->bits_per_raw_sample;
2665             enc_ctx->chroma_sample_location = dec_ctx->chroma_sample_location;
2666         } else {
2667             for (j=0; j<oc->nb_streams; j++) {
2668                 AVStream *st = oc->streams[j];
2669                 if (st != ost->st && st->codec->codec_type == enc_ctx->codec_type)
2670                     break;
2671             }
2672             if (j == oc->nb_streams)
2673                 if (enc_ctx->codec_type == AVMEDIA_TYPE_AUDIO || enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO)
2674                     ost->st->disposition = AV_DISPOSITION_DEFAULT;
2675         }
2676
2677         if (ost->stream_copy) {
2678             AVRational sar;
2679             uint64_t extra_size;
2680
2681             av_assert0(ist && !ost->filter);
2682
2683             extra_size = (uint64_t)dec_ctx->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2684
2685             if (extra_size > INT_MAX) {
2686                 return AVERROR(EINVAL);
2687             }
2688
2689             /* if stream_copy is selected, no need to decode or encode */
2690             enc_ctx->codec_id   = dec_ctx->codec_id;
2691             enc_ctx->codec_type = dec_ctx->codec_type;
2692
2693             if (!enc_ctx->codec_tag) {
2694                 unsigned int codec_tag;
2695                 if (!oc->oformat->codec_tag ||
2696                      av_codec_get_id (oc->oformat->codec_tag, dec_ctx->codec_tag) == enc_ctx->codec_id ||
2697                      !av_codec_get_tag2(oc->oformat->codec_tag, dec_ctx->codec_id, &codec_tag))
2698                     enc_ctx->codec_tag = dec_ctx->codec_tag;
2699             }
2700
2701             enc_ctx->bit_rate       = dec_ctx->bit_rate;
2702             enc_ctx->rc_max_rate    = dec_ctx->rc_max_rate;
2703             enc_ctx->rc_buffer_size = dec_ctx->rc_buffer_size;
2704             enc_ctx->field_order    = dec_ctx->field_order;
2705             if (dec_ctx->extradata_size) {
2706                 enc_ctx->extradata      = av_mallocz(extra_size);
2707                 if (!enc_ctx->extradata) {
2708                     return AVERROR(ENOMEM);
2709                 }
2710                 memcpy(enc_ctx->extradata, dec_ctx->extradata, dec_ctx->extradata_size);
2711             }
2712             enc_ctx->extradata_size= dec_ctx->extradata_size;
2713             enc_ctx->bits_per_coded_sample  = dec_ctx->bits_per_coded_sample;
2714
2715             enc_ctx->time_base = ist->st->time_base;
2716             /*
2717              * Avi is a special case here because it supports variable fps but
2718              * having the fps and timebase differe significantly adds quite some
2719              * overhead
2720              */
2721             if(!strcmp(oc->oformat->name, "avi")) {
2722                 if ( copy_tb<0 && av_q2d(ist->st->r_frame_rate) >= av_q2d(ist->st->avg_frame_rate)
2723                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(ist->st->time_base)
2724                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(dec_ctx->time_base)
2725                                && av_q2d(ist->st->time_base) < 1.0/500 && av_q2d(dec_ctx->time_base) < 1.0/500
2726                      || copy_tb==2){
2727                     enc_ctx->time_base.num = ist->st->r_frame_rate.den;
2728                     enc_ctx->time_base.den = 2*ist->st->r_frame_rate.num;
2729                     enc_ctx->ticks_per_frame = 2;
2730                 } else if (   copy_tb<0 && av_q2d(dec_ctx->time_base)*dec_ctx->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2731                                  && av_q2d(ist->st->time_base) < 1.0/500
2732                     || copy_tb==0){
2733                     enc_ctx->time_base = dec_ctx->time_base;
2734                     enc_ctx->time_base.num *= dec_ctx->ticks_per_frame;
2735                     enc_ctx->time_base.den *= 2;
2736                     enc_ctx->ticks_per_frame = 2;
2737                 }
2738             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2739                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2740                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2741                       && strcmp(oc->oformat->name, "f4v")
2742             ) {
2743                 if(   copy_tb<0 && dec_ctx->time_base.den
2744                                 && av_q2d(dec_ctx->time_base)*dec_ctx->ticks_per_frame > av_q2d(ist->st->time_base)
2745                                 && av_q2d(ist->st->time_base) < 1.0/500
2746                    || copy_tb==0){
2747                     enc_ctx->time_base = dec_ctx->time_base;
2748                     enc_ctx->time_base.num *= dec_ctx->ticks_per_frame;
2749                 }
2750             }
2751             if (   enc_ctx->codec_tag == AV_RL32("tmcd")
2752                 && dec_ctx->time_base.num < dec_ctx->time_base.den
2753                 && dec_ctx->time_base.num > 0
2754                 && 121LL*dec_ctx->time_base.num > dec_ctx->time_base.den) {
2755                 enc_ctx->time_base = dec_ctx->time_base;
2756             }
2757
2758             if (ist && !ost->frame_rate.num)
2759                 ost->frame_rate = ist->framerate;
2760             if(ost->frame_rate.num)
2761                 enc_ctx->time_base = av_inv_q(ost->frame_rate);
2762
2763             av_reduce(&enc_ctx->time_base.num, &enc_ctx->time_base.den,
2764                         enc_ctx->time_base.num, enc_ctx->time_base.den, INT_MAX);
2765
2766             if (ist->st->nb_side_data) {
2767                 ost->st->side_data = av_realloc_array(NULL, ist->st->nb_side_data,
2768                                                       sizeof(*ist->st->side_data));
2769                 if (!ost->st->side_data)
2770                     return AVERROR(ENOMEM);
2771
2772                 ost->st->nb_side_data = 0;
2773                 for (j = 0; j < ist->st->nb_side_data; j++) {
2774                     const AVPacketSideData *sd_src = &ist->st->side_data[j];
2775                     AVPacketSideData *sd_dst = &ost->st->side_data[ost->st->nb_side_data];
2776
2777                     if (ost->rotate_overridden && sd_src->type == AV_PKT_DATA_DISPLAYMATRIX)
2778                         continue;
2779
2780                     sd_dst->data = av_malloc(sd_src->size);
2781                     if (!sd_dst->data)
2782                         return AVERROR(ENOMEM);
2783                     memcpy(sd_dst->data, sd_src->data, sd_src->size);
2784                     sd_dst->size = sd_src->size;
2785                     sd_dst->type = sd_src->type;
2786                     ost->st->nb_side_data++;
2787                 }
2788             }
2789
2790             ost->parser = av_parser_init(enc_ctx->codec_id);
2791
2792             switch (enc_ctx->codec_type) {
2793             case AVMEDIA_TYPE_AUDIO:
2794                 if (audio_volume != 256) {
2795                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2796                     exit_program(1);
2797                 }
2798                 enc_ctx->channel_layout     = dec_ctx->channel_layout;
2799                 enc_ctx->sample_rate        = dec_ctx->sample_rate;
2800                 enc_ctx->channels           = dec_ctx->channels;
2801                 enc_ctx->frame_size         = dec_ctx->frame_size;
2802                 enc_ctx->audio_service_type = dec_ctx->audio_service_type;
2803                 enc_ctx->block_align        = dec_ctx->block_align;
2804                 enc_ctx->initial_padding    = dec_ctx->delay;
2805 #if FF_API_AUDIOENC_DELAY
2806                 enc_ctx->delay              = dec_ctx->delay;
2807 #endif
2808                 if((enc_ctx->block_align == 1 || enc_ctx->block_align == 1152 || enc_ctx->block_align == 576) && enc_ctx->codec_id == AV_CODEC_ID_MP3)
2809                     enc_ctx->block_align= 0;
2810                 if(enc_ctx->codec_id == AV_CODEC_ID_AC3)
2811                     enc_ctx->block_align= 0;
2812                 break;
2813             case AVMEDIA_TYPE_VIDEO:
2814                 enc_ctx->pix_fmt            = dec_ctx->pix_fmt;
2815                 enc_ctx->width              = dec_ctx->width;
2816                 enc_ctx->height             = dec_ctx->height;
2817                 enc_ctx->has_b_frames       = dec_ctx->has_b_frames;
2818                 if (ost->frame_aspect_ratio.num) { // overridden by the -aspect cli option
2819                     sar =
2820                         av_mul_q(ost->frame_aspect_ratio,
2821                                  (AVRational){ enc_ctx->height, enc_ctx->width });
2822                     av_log(NULL, AV_LOG_WARNING, "Overriding aspect ratio "
2823                            "with stream copy may produce invalid files\n");
2824                 }
2825                 else if (ist->st->sample_aspect_ratio.num)
2826                     sar = ist->st->sample_aspect_ratio;
2827                 else
2828                     sar = dec_ctx->sample_aspect_ratio;
2829                 ost->st->sample_aspect_ratio = enc_ctx->sample_aspect_ratio = sar;
2830                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2831                 ost->st->r_frame_rate = ist->st->r_frame_rate;
2832                 break;
2833             case AVMEDIA_TYPE_SUBTITLE:
2834                 enc_ctx->width  = dec_ctx->width;
2835                 enc_ctx->height = dec_ctx->height;
2836                 break;
2837             case AVMEDIA_TYPE_UNKNOWN:
2838             case AVMEDIA_TYPE_DATA:
2839             case AVMEDIA_TYPE_ATTACHMENT:
2840                 break;
2841             default:
2842                 abort();
2843             }
2844         } else {
2845             if (!ost->enc)
2846                 ost->enc = avcodec_find_encoder(enc_ctx->codec_id);
2847             if (!ost->enc) {
2848                 /* should only happen when a default codec is not present. */
2849                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
2850                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2851                 ret = AVERROR(EINVAL);
2852                 goto dump_format;
2853             }
2854
2855             if (ist)
2856                 ist->decoding_needed |= DECODING_FOR_OST;
2857             ost->encoding_needed = 1;
2858
2859             set_encoder_id(output_files[ost->file_index], ost);
2860
2861             if (!ost->filter &&
2862                 (enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO ||
2863                  enc_ctx->codec_type == AVMEDIA_TYPE_AUDIO)) {
2864                     FilterGraph *fg;
2865                     fg = init_simple_filtergraph(ist, ost);
2866                     if (configure_filtergraph(fg)) {
2867                         av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2868                         exit_program(1);
2869                     }
2870             }
2871
2872             if (enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO) {
2873                 if (!ost->frame_rate.num)
2874                     ost->frame_rate = av_buffersink_get_frame_rate(ost->filter->filter);
2875                 if (ist && !ost->frame_rate.num)
2876                     ost->frame_rate = ist->framerate;
2877                 if (ist && !ost->frame_rate.num)
2878                     ost->frame_rate = ist->st->r_frame_rate;
2879                 if (ist && !ost->frame_rate.num) {
2880                     ost->frame_rate = (AVRational){25, 1};
2881                     av_log(NULL, AV_LOG_WARNING,
2882                            "No information "
2883                            "about the input framerate is available. Falling "
2884                            "back to a default value of 25fps for output stream #%d:%d. Use the -r option "
2885                            "if you want a different framerate.\n",
2886                            ost->file_index, ost->index);
2887                 }
2888 //                    ost->frame_rate = ist->st->avg_frame_rate.num ? ist->st->avg_frame_rate : (AVRational){25, 1};
2889                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2890                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2891                     ost->frame_rate = ost->enc->supported_framerates[idx];
2892                 }
2893                 // reduce frame rate for mpeg4 to be within the spec limits
2894                 if (enc_ctx->codec_id == AV_CODEC_ID_MPEG4) {
2895                     av_reduce(&ost->frame_rate.num, &ost->frame_rate.den,
2896                               ost->frame_rate.num, ost->frame_rate.den, 65535);
2897                 }
2898             }
2899
2900             switch (enc_ctx->codec_type) {
2901             case AVMEDIA_TYPE_AUDIO:
2902                 enc_ctx->sample_fmt     = ost->filter->filter->inputs[0]->format;
2903                 enc_ctx->sample_rate    = ost->filter->filter->inputs[0]->sample_rate;
2904                 enc_ctx->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
2905                 enc_ctx->channels       = avfilter_link_get_channels(ost->filter->filter->inputs[0]);
2906                 enc_ctx->time_base      = (AVRational){ 1, enc_ctx->sample_rate };
2907                 break;
2908             case AVMEDIA_TYPE_VIDEO:
2909                 enc_ctx->time_base = av_inv_q(ost->frame_rate);
2910                 if (!(enc_ctx->time_base.num && enc_ctx->time_base.den))
2911                     enc_ctx->time_base = ost->filter->filter->inputs[0]->time_base;
2912                 if (   av_q2d(enc_ctx->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
2913                    && (video_sync_method == VSYNC_CFR || video_sync_method == VSYNC_VSCFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
2914                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
2915                                                "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
2916                 }
2917                 for (j = 0; j < ost->forced_kf_count; j++)
2918                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2919                                                          AV_TIME_BASE_Q,
2920                                                          enc_ctx->time_base);
2921
2922                 enc_ctx->width  = ost->filter->filter->inputs[0]->w;
2923                 enc_ctx->height = ost->filter->filter->inputs[0]->h;
2924                 enc_ctx->sample_aspect_ratio = ost->st->sample_aspect_ratio =
2925                     ost->frame_aspect_ratio.num ? // overridden by the -aspect cli option
2926                     av_mul_q(ost->frame_aspect_ratio, (AVRational){ enc_ctx->height, enc_ctx->width }) :
2927                     ost->filter->filter->inputs[0]->sample_aspect_ratio;
2928                 if (!strncmp(ost->enc->name, "libx264", 7) &&
2929                     enc_ctx->pix_fmt == AV_PIX_FMT_NONE &&
2930                     ost->filter->filter->inputs[0]->format != AV_PIX_FMT_YUV420P)
2931                     av_log(NULL, AV_LOG_WARNING,
2932                            "No pixel format specified, %s for H.264 encoding chosen.\n"
2933                            "Use -pix_fmt yuv420p for compatibility with outdated media players.\n",
2934                            av_get_pix_fmt_name(ost->filter->filter->inputs[0]->format));
2935                 if (!strncmp(ost->enc->name, "mpeg2video", 10) &&
2936                     enc_ctx->pix_fmt == AV_PIX_FMT_NONE &&
2937                     ost->filter->filter->inputs[0]->format != AV_PIX_FMT_YUV420P)
2938                     av_log(NULL, AV_LOG_WARNING,
2939                            "No pixel format specified, %s for MPEG-2 encoding chosen.\n"
2940                            "Use -pix_fmt yuv420p for compatibility with outdated media players.\n",
2941                            av_get_pix_fmt_name(ost->filter->filter->inputs[0]->format));
2942                 enc_ctx->pix_fmt = ost->filter->filter->inputs[0]->format;
2943
2944                 ost->st->avg_frame_rate = ost->frame_rate;
2945
2946                 if (!dec_ctx ||
2947                     enc_ctx->width   != dec_ctx->width  ||
2948                     enc_ctx->height  != dec_ctx->height ||
2949                     enc_ctx->pix_fmt != dec_ctx->pix_fmt) {
2950                     enc_ctx->bits_per_raw_sample = frame_bits_per_raw_sample;
2951                 }
2952
2953                 if (ost->forced_keyframes) {
2954                     if (!strncmp(ost->forced_keyframes, "expr:", 5)) {
2955                         ret = av_expr_parse(&ost->forced_keyframes_pexpr, ost->forced_keyframes+5,
2956                                             forced_keyframes_const_names, NULL, NULL, NULL, NULL, 0, NULL);
2957                         if (ret < 0) {
2958                             av_log(NULL, AV_LOG_ERROR,
2959                                    "Invalid force_key_frames expression '%s'\n", ost->forced_keyframes+5);
2960                             return ret;
2961                         }
2962                         ost->forced_keyframes_expr_const_values[FKF_N] = 0;
2963                         ost->forced_keyframes_expr_const_values[FKF_N_FORCED] = 0;
2964                         ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] = NAN;
2965                         ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] = NAN;
2966
2967                         // Don't parse the 'forced_keyframes' in case of 'keep-source-keyframes',
2968                         // parse it only for static kf timings
2969                     } else if(strncmp(ost->forced_keyframes, "source", 6)) {
2970                         parse_forced_key_frames(ost->forced_keyframes, ost, ost->enc_ctx);
2971                     }
2972                 }
2973                 break;
2974             case AVMEDIA_TYPE_SUBTITLE:
2975                 enc_ctx->time_base = (AVRational){1, 1000};
2976                 if (!enc_ctx->width) {
2977                     enc_ctx->width     = input_streams[ost->source_index]->st->codec->width;
2978                     enc_ctx->height    = input_streams[ost->source_index]->st->codec->height;
2979                 }
2980                 break;
2981             case AVMEDIA_TYPE_DATA:
2982                 break;
2983             default:
2984                 abort();
2985                 break;
2986             }
2987             /* two pass mode */
2988             if (enc_ctx->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
2989                 char logfilename[1024];
2990                 FILE *f;
2991
2992                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2993                          ost->logfile_prefix ? ost->logfile_prefix :
2994                                                DEFAULT_PASS_LOGFILENAME_PREFIX,
2995                          i);
2996                 if (!strcmp(ost->enc->name, "libx264")) {
2997                     av_dict_set(&ost->encoder_opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
2998                 } else {
2999                     if (enc_ctx->flags & CODEC_FLAG_PASS2) {
3000                         char  *logbuffer;
3001                         size_t logbuffer_size;
3002                         if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
3003                             av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
3004                                    logfilename);
3005                             exit_program(1);
3006                         }
3007                         enc_ctx->stats_in = logbuffer;
3008                     }
3009                     if (enc_ctx->flags & CODEC_FLAG_PASS1) {
3010                         f = av_fopen_utf8(logfilename, "wb");
3011                         if (!f) {
3012                             av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
3013                                 logfilename, strerror(errno));
3014                             exit_program(1);
3015                         }
3016                         ost->logfile = f;
3017                     }
3018                 }
3019             }
3020         }
3021
3022         if (ost->disposition) {
3023             static const AVOption opts[] = {
3024                 { "disposition"         , NULL, 0, AV_OPT_TYPE_FLAGS, { .i64 = 0 }, INT64_MIN, INT64_MAX, .unit = "flags" },
3025                 { "default"             , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_DEFAULT           },    .unit = "flags" },
3026                 { "dub"                 , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_DUB               },    .unit = "flags" },
3027                 { "original"            , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_ORIGINAL          },    .unit = "flags" },
3028                 { "comment"             , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_COMMENT           },    .unit = "flags" },
3029                 { "lyrics"              , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_LYRICS            },    .unit = "flags" },
3030                 { "karaoke"             , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_KARAOKE           },    .unit = "flags" },
3031                 { "forced"              , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_FORCED            },    .unit = "flags" },
3032                 { "hearing_impaired"    , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_HEARING_IMPAIRED  },    .unit = "flags" },
3033                 { "visual_impaired"     , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_VISUAL_IMPAIRED   },    .unit = "flags" },
3034                 { "clean_effects"       , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_CLEAN_EFFECTS     },    .unit = "flags" },
3035                 { "captions"            , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_CAPTIONS          },    .unit = "flags" },
3036                 { "descriptions"        , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_DESCRIPTIONS      },    .unit = "flags" },
3037                 { "metadata"            , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_METADATA          },    .unit = "flags" },
3038                 { NULL },
3039             };
3040             static const AVClass class = {
3041                 .class_name = "",
3042                 .item_name  = av_default_item_name,
3043                 .option     = opts,
3044                 .version    = LIBAVUTIL_VERSION_INT,
3045             };
3046             const AVClass *pclass = &class;
3047
3048             ret = av_opt_eval_flags(&pclass, &opts[0], ost->disposition, &ost->st->disposition);
3049             if (ret < 0)
3050                 goto dump_format;
3051         }
3052     }
3053
3054     /* open each encoder */
3055     for (i = 0; i < nb_output_streams; i++) {
3056         ost = output_streams[i];
3057         if (ost->encoding_needed) {
3058             AVCodec      *codec = ost->enc;
3059             AVCodecContext *dec = NULL;
3060
3061             if ((ist = get_input_stream(ost)))
3062                 dec = ist->dec_ctx;
3063             if (dec && dec->subtitle_header) {
3064                 /* ASS code assumes this buffer is null terminated so add extra byte. */
3065                 ost->enc_ctx->subtitle_header = av_mallocz(dec->subtitle_header_size + 1);
3066                 if (!ost->enc_ctx->subtitle_header) {
3067                     ret = AVERROR(ENOMEM);
3068                     goto dump_format;
3069                 }
3070                 memcpy(ost->enc_ctx->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
3071                 ost->enc_ctx->subtitle_header_size = dec->subtitle_header_size;
3072             }
3073             if (!av_dict_get(ost->encoder_opts, "threads", NULL, 0))
3074                 av_dict_set(&ost->encoder_opts, "threads", "auto", 0);
3075             av_dict_set(&ost->encoder_opts, "side_data_only_packets", "1", 0);
3076
3077             if ((ret = avcodec_open2(ost->enc_ctx, codec, &ost->encoder_opts)) < 0) {
3078                 if (ret == AVERROR_EXPERIMENTAL)
3079                     abort_codec_experimental(codec, 1);
3080                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
3081                         ost->file_index, ost->index);
3082                 goto dump_format;
3083             }
3084             if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
3085                 !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
3086                 av_buffersink_set_frame_size(ost->filter->filter,
3087                                              ost->enc_ctx->frame_size);
3088             assert_avoptions(ost->encoder_opts);
3089             if (ost->enc_ctx->bit_rate && ost->enc_ctx->bit_rate < 1000)
3090                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
3091                                              " It takes bits/s as argument, not kbits/s\n");
3092
3093             ret = avcodec_copy_context(ost->st->codec, ost->enc_ctx);
3094             if (ret < 0) {
3095                 av_log(NULL, AV_LOG_FATAL,
3096                        "Error initializing the output stream codec context.\n");
3097                 exit_program(1);
3098             }
3099
3100             // copy timebase while removing common factors
3101             ost->st->time_base = av_add_q(ost->enc_ctx->time_base, (AVRational){0, 1});
3102             ost->st->codec->codec= ost->enc_ctx->codec;
3103         } else {
3104             ret = av_opt_set_dict(ost->enc_ctx, &ost->encoder_opts);
3105             if (ret < 0) {
3106                 av_log(NULL, AV_LOG_FATAL,
3107                     "Error setting up codec context options.\n");
3108                 return ret;
3109             }
3110             // copy timebase while removing common factors
3111             ost->st->time_base = av_add_q(ost->st->codec->time_base, (AVRational){0, 1});
3112         }
3113     }
3114
3115     /* init input streams */
3116     for (i = 0; i < nb_input_streams; i++)
3117         if ((ret = init_input_stream(i, error, sizeof(error))) < 0) {
3118             for (i = 0; i < nb_output_streams; i++) {
3119                 ost = output_streams[i];
3120                 avcodec_close(ost->enc_ctx);
3121             }
3122             goto dump_format;
3123         }
3124
3125     /* discard unused programs */
3126     for (i = 0; i < nb_input_files; i++) {
3127         InputFile *ifile = input_files[i];
3128         for (j = 0; j < ifile->ctx->nb_programs; j++) {
3129             AVProgram *p = ifile->ctx->programs[j];
3130             int discard  = AVDISCARD_ALL;
3131
3132             for (k = 0; k < p->nb_stream_indexes; k++)
3133                 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
3134                     discard = AVDISCARD_DEFAULT;
3135                     break;
3136                 }
3137             p->discard = discard;
3138         }
3139     }
3140
3141     /* open files and write file headers */
3142     for (i = 0; i < nb_output_files; i++) {
3143         oc = output_files[i]->ctx;
3144         oc->interrupt_callback = int_cb;
3145         if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
3146             snprintf(error, sizeof(error),
3147                      "Could not write header for output file #%d "
3148                      "(incorrect codec parameters ?): %s",
3149                      i, av_err2str(ret));
3150             ret = AVERROR(EINVAL);
3151             goto dump_format;
3152         }
3153 //         assert_avoptions(output_files[i]->opts);
3154         if (strcmp(oc->oformat->name, "rtp")) {
3155             want_sdp = 0;
3156         }
3157     }
3158
3159  dump_format:
3160     /* dump the file output parameters - cannot be done before in case
3161        of stream copy */
3162     for (i = 0; i < nb_output_files; i++) {
3163         av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
3164     }
3165
3166     /* dump the stream mapping */
3167     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
3168     for (i = 0; i < nb_input_streams; i++) {
3169         ist = input_streams[i];
3170
3171         for (j = 0; j < ist->nb_filters; j++) {
3172             if (ist->filters[j]->graph->graph_desc) {
3173                 av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
3174                        ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
3175                        ist->filters[j]->name);
3176                 if (nb_filtergraphs > 1)
3177                     av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
3178                 av_log(NULL, AV_LOG_INFO, "\n");
3179             }
3180         }
3181     }
3182
3183     for (i = 0; i < nb_output_streams; i++) {
3184         ost = output_streams[i];
3185
3186         if (ost->attachment_filename) {
3187             /* an attached file */
3188             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
3189                    ost->attachment_filename, ost->file_index, ost->index);
3190             continue;
3191         }
3192
3193         if (ost->filter && ost->filter->graph->graph_desc) {
3194             /* output from a complex graph */
3195             av_log(NULL, AV_LOG_INFO, "  %s", ost->filter->name);
3196             if (nb_filtergraphs > 1)
3197                 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
3198
3199             av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
3200                    ost->index, ost->enc ? ost->enc->name : "?");
3201             continue;
3202         }
3203
3204         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
3205                input_streams[ost->source_index]->file_index,
3206                input_streams[ost->source_index]->st->index,
3207                ost->file_index,
3208                ost->index);
3209         if (ost->sync_ist != input_streams[ost->source_index])
3210             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
3211                    ost->sync_ist->file_index,
3212                    ost->sync_ist->st->index);
3213         if (ost->stream_copy)
3214             av_log(NULL, AV_LOG_INFO, " (copy)");
3215         else {
3216             const AVCodec *in_codec    = input_streams[ost->source_index]->dec;
3217             const AVCodec *out_codec   = ost->enc;
3218             const char *decoder_name   = "?";
3219             const char *in_codec_name  = "?";
3220             const char *encoder_name   = "?";
3221             const char *out_codec_name = "?";
3222             const AVCodecDescriptor *desc;
3223
3224             if (in_codec) {
3225                 decoder_name  = in_codec->name;
3226                 desc = avcodec_descriptor_get(in_codec->id);
3227                 if (desc)
3228                     in_codec_name = desc->name;
3229                 if (!strcmp(decoder_name, in_codec_name))
3230                     decoder_name = "native";
3231             }
3232
3233             if (out_codec) {
3234                 encoder_name   = out_codec->name;
3235                 desc = avcodec_descriptor_get(out_codec->id);
3236                 if (desc)
3237                     out_codec_name = desc->name;
3238                 if (!strcmp(encoder_name, out_codec_name))
3239                     encoder_name = "native";
3240             }
3241
3242             av_log(NULL, AV_LOG_INFO, " (%s (%s) -> %s (%s))",
3243                    in_codec_name, decoder_name,
3244                    out_codec_name, encoder_name);
3245         }
3246         av_log(NULL, AV_LOG_INFO, "\n");
3247     }
3248
3249     if (ret) {
3250         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
3251         return ret;
3252     }
3253
3254     if (sdp_filename || want_sdp) {
3255         print_sdp();
3256     }
3257
3258     transcode_init_done = 1;
3259
3260     return 0;
3261 }
3262
3263 /* Return 1 if there remain streams where more output is wanted, 0 otherwise. */
3264 static int need_output(void)
3265 {
3266     int i;
3267
3268     for (i = 0; i < nb_output_streams; i++) {
3269         OutputStream *ost    = output_streams[i];
3270         OutputFile *of       = output_files[ost->file_index];
3271         AVFormatContext *os  = output_files[ost->file_index]->ctx;
3272
3273         if (ost->finished ||
3274             (os->pb && avio_tell(os->pb) >= of->limit_filesize))
3275             continue;
3276         if (ost->frame_number >= ost->max_frames) {
3277             int j;
3278             for (j = 0; j < of->ctx->nb_streams; j++)
3279                 close_output_stream(output_streams[of->ost_index + j]);
3280             continue;
3281         }
3282
3283         return 1;
3284     }
3285
3286     return 0;
3287 }
3288
3289 /**
3290  * Select the output stream to process.
3291  *
3292  * @return  selected output stream, or NULL if none available
3293  */
3294 static OutputStream *choose_output(void)
3295 {
3296     int i;
3297     int64_t opts_min = INT64_MAX;
3298     OutputStream *ost_min = NULL;
3299
3300     for (i = 0; i < nb_output_streams; i++) {
3301         OutputStream *ost = output_streams[i];
3302         int64_t opts = av_rescale_q(ost->st->cur_dts, ost->st->time_base,
3303                                     AV_TIME_BASE_Q);
3304         if (!ost->finished && opts < opts_min) {
3305             opts_min = opts;
3306             ost_min  = ost->unavailable ? NULL : ost;
3307         }
3308     }
3309     return ost_min;
3310 }
3311
3312 static int check_keyboard_interaction(int64_t cur_time)
3313 {
3314     int i, ret, key;
3315     static int64_t last_time;
3316     if (received_nb_signals)
3317         return AVERROR_EXIT;
3318     /* read_key() returns 0 on EOF */
3319     if(cur_time - last_time >= 100000 && !run_as_daemon){
3320         key =  read_key();
3321         last_time = cur_time;
3322     }else
3323         key = -1;
3324     if (key == 'q')
3325         return AVERROR_EXIT;
3326     if (key == '+') av_log_set_level(av_log_get_level()+10);
3327     if (key == '-') av_log_set_level(av_log_get_level()-10);
3328     if (key == 's') qp_hist     ^= 1;
3329     if (key == 'h'){
3330         if (do_hex_dump){
3331             do_hex_dump = do_pkt_dump = 0;
3332         } else if(do_pkt_dump){
3333             do_hex_dump = 1;
3334         } else
3335             do_pkt_dump = 1;
3336         av_log_set_level(AV_LOG_DEBUG);
3337     }
3338     if (key == 'c' || key == 'C'){
3339         char buf[4096], target[64], command[256], arg[256] = {0};
3340         double time;
3341         int k, n = 0;
3342         fprintf(stderr, "\nEnter command: <target>|all <time>|-1 <command>[ <argument>]\n");
3343         i = 0;
3344         while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
3345             if (k > 0)
3346                 buf[i++] = k;
3347         buf[i] = 0;
3348         if (k > 0 &&
3349             (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
3350             av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
3351                    target, time, command, arg);
3352             for (i = 0; i < nb_filtergraphs; i++) {
3353                 FilterGraph *fg = filtergraphs[i];
3354                 if (fg->graph) {
3355                     if (time < 0) {
3356                         ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
3357                                                           key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
3358                         fprintf(stderr, "Command reply for stream %d: ret:%d res:\n%s", i, ret, buf);
3359                     } else if (key == 'c') {
3360                         fprintf(stderr, "Queing commands only on filters supporting the specific command is unsupported\n");
3361                         ret = AVERROR_PATCHWELCOME;
3362                     } else {
3363                         ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
3364                         if (ret < 0)
3365                             fprintf(stderr, "Queing command failed with error %s\n", av_err2str(ret));
3366                     }
3367                 }
3368             }
3369         } else {
3370             av_log(NULL, AV_LOG_ERROR,
3371                    "Parse error, at least 3 arguments were expected, "
3372                    "only %d given in string '%s'\n", n, buf);
3373         }
3374     }
3375     if (key == 'd' || key == 'D'){
3376         int debug=0;
3377         if(key == 'D') {
3378             debug = input_streams[0]->st->codec->debug<<1;
3379             if(!debug) debug = 1;
3380             while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
3381                 debug += debug;
3382         }else
3383             if(scanf("%d", &debug)!=1)
3384                 fprintf(stderr,"error parsing debug value\n");
3385         for(i=0;i<nb_input_streams;i++) {
3386             input_streams[i]->st->codec->debug = debug;
3387         }
3388         for(i=0;i<nb_output_streams;i++) {
3389             OutputStream *ost = output_streams[i];
3390             ost->enc_ctx->debug = debug;
3391         }
3392         if(debug) av_log_set_level(AV_LOG_DEBUG);
3393         fprintf(stderr,"debug=%d\n", debug);
3394     }
3395     if (key == '?'){
3396         fprintf(stderr, "key    function\n"
3397                         "?      show this help\n"
3398                         "+      increase verbosity\n"
3399                         "-      decrease verbosity\n"
3400                         "c      Send command to first matching filter supporting it\n"
3401                         "C      Send/Que command to all matching filters\n"
3402                         "D      cycle through available debug modes\n"
3403                         "h      dump packets/hex press to cycle through the 3 states\n"
3404                         "q      quit\n"
3405                         "s      Show QP histogram\n"
3406         );
3407     }
3408     return 0;
3409 }
3410
3411 #if HAVE_PTHREADS
3412 static void *input_thread(void *arg)
3413 {
3414     InputFile *f = arg;
3415     unsigned flags = f->non_blocking ? AV_THREAD_MESSAGE_NONBLOCK : 0;
3416     int ret = 0;
3417
3418     while (1) {
3419         AVPacket pkt;
3420         ret = av_read_frame(f->ctx, &pkt);
3421
3422         if (ret == AVERROR(EAGAIN)) {
3423             av_usleep(10000);
3424             continue;
3425         }
3426         if (ret < 0) {
3427             av_thread_message_queue_set_err_recv(f->in_thread_queue, ret);
3428             break;
3429         }
3430         av_dup_packet(&pkt);
3431         ret = av_thread_message_queue_send(f->in_thread_queue, &pkt, flags);
3432         if (flags && ret == AVERROR(EAGAIN)) {
3433             flags = 0;
3434             ret = av_thread_message_queue_send(f->in_thread_queue, &pkt, flags);
3435             av_log(f->ctx, AV_LOG_WARNING,
3436                    "Thread message queue blocking; consider raising the "
3437                    "thread_queue_size option (current value: %d)\n",
3438                    f->thread_queue_size);
3439         }
3440         if (ret < 0) {
3441             if (ret != AVERROR_EOF)
3442                 av_log(f->ctx, AV_LOG_ERROR,
3443                        "Unable to send packet to main thread: %s\n",
3444                        av_err2str(ret));
3445             av_free_packet(&pkt);
3446             av_thread_message_queue_set_err_recv(f->in_thread_queue, ret);
3447             break;
3448         }
3449     }
3450
3451     return NULL;
3452 }
3453
3454 static void free_input_threads(void)
3455 {
3456     int i;
3457
3458     for (i = 0; i < nb_input_files; i++) {
3459         InputFile *f = input_files[i];
3460         AVPacket pkt;
3461
3462         if (!f->in_thread_queue)
3463             continue;
3464         av_thread_message_queue_set_err_send(f->in_thread_queue, AVERROR_EOF);
3465         while (av_thread_message_queue_recv(f->in_thread_queue, &pkt, 0) >= 0)
3466             av_free_packet(&pkt);
3467
3468         pthread_join(f->thread, NULL);
3469         f->joined = 1;
3470         av_thread_message_queue_free(&f->in_thread_queue);
3471     }
3472 }
3473
3474 static int init_input_threads(void)
3475 {
3476     int i, ret;
3477
3478     if (nb_input_files == 1)
3479         return 0;
3480
3481     for (i = 0; i < nb_input_files; i++) {
3482         InputFile *f = input_files[i];
3483
3484         if (f->ctx->pb ? !f->ctx->pb->seekable :
3485             strcmp(f->ctx->iformat->name, "lavfi"))
3486             f->non_blocking = 1;
3487         ret = av_thread_message_queue_alloc(&f->in_thread_queue,
3488                                             f->thread_queue_size, sizeof(AVPacket));
3489         if (ret < 0)
3490             return ret;
3491
3492         if ((ret = pthread_create(&f->thread, NULL, input_thread, f))) {
3493             av_log(NULL, AV_LOG_ERROR, "pthread_create failed: %s. Try to increase `ulimit -v` or decrease `ulimit -s`.\n", strerror(ret));
3494             av_thread_message_queue_free(&f->in_thread_queue);
3495             return AVERROR(ret);
3496         }
3497     }
3498     return 0;
3499 }
3500
3501 static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
3502 {
3503     return av_thread_message_queue_recv(f->in_thread_queue, pkt,
3504                                         f->non_blocking ?
3505                                         AV_THREAD_MESSAGE_NONBLOCK : 0);
3506 }
3507 #endif
3508
3509 static int get_input_packet(InputFile *f, AVPacket *pkt)
3510 {
3511     if (f->rate_emu) {
3512         int i;
3513         for (i = 0; i < f->nb_streams; i++) {
3514             InputStream *ist = input_streams[f->ist_index + i];
3515             int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
3516             int64_t now = av_gettime_relative() - ist->start;
3517             if (pts > now)
3518                 return AVERROR(EAGAIN);
3519         }
3520     }
3521
3522 #if HAVE_PTHREADS
3523     if (nb_input_files > 1)
3524         return get_input_packet_mt(f, pkt);
3525 #endif
3526     return av_read_frame(f->ctx, pkt);
3527 }
3528
3529 static int got_eagain(void)
3530 {
3531     int i;
3532     for (i = 0; i < nb_output_streams; i++)
3533         if (output_streams[i]->unavailable)
3534             return 1;
3535     return 0;
3536 }
3537
3538 static void reset_eagain(void)
3539 {
3540     int i;
3541     for (i = 0; i < nb_input_files; i++)
3542         input_files[i]->eagain = 0;
3543     for (i = 0; i < nb_output_streams; i++)
3544         output_streams[i]->unavailable = 0;
3545 }
3546
3547 /*
3548  * Return
3549  * - 0 -- one packet was read and processed
3550  * - AVERROR(EAGAIN) -- no packets were available for selected file,
3551  *   this function should be called again
3552  * - AVERROR_EOF -- this function should not be called again
3553  */
3554 static int process_input(int file_index)
3555 {
3556     InputFile *ifile = input_files[file_index];
3557     AVFormatContext *is;
3558     InputStream *ist;
3559     AVPacket pkt;
3560     int ret, i, j;
3561
3562     is  = ifile->ctx;
3563     ret = get_input_packet(ifile, &pkt);
3564
3565     if (ret == AVERROR(EAGAIN)) {
3566         ifile->eagain = 1;
3567         return ret;
3568     }
3569     if (ret < 0) {
3570         if (ret != AVERROR_EOF) {
3571             print_error(is->filename, ret);
3572             if (exit_on_error)
3573                 exit_program(1);
3574         }
3575
3576         for (i = 0; i < ifile->nb_streams; i++) {
3577             ist = input_streams[ifile->ist_index + i];
3578             if (ist->decoding_needed) {
3579                 ret = process_input_packet(ist, NULL);
3580                 if (ret>0)
3581                     return 0;
3582             }
3583
3584             /* mark all outputs that don't go through lavfi as finished */
3585             for (j = 0; j < nb_output_streams; j++) {
3586                 OutputStream *ost = output_streams[j];
3587
3588                 if (ost->source_index == ifile->ist_index + i &&
3589                     (ost->stream_copy || ost->enc->type == AVMEDIA_TYPE_SUBTITLE))
3590                     finish_output_stream(ost);
3591             }
3592         }
3593
3594         ifile->eof_reached = 1;
3595         return AVERROR(EAGAIN);
3596     }
3597
3598     reset_eagain();
3599
3600     if (do_pkt_dump) {
3601         av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
3602                          is->streams[pkt.stream_index]);