git.sesse.net Git - ffmpeg/blob - ffmpeg.c

   1 /*
   2  * Copyright (c) 2000-2003 Fabrice Bellard
   3  *
   4  * This file is part of FFmpeg.
   5  *
   6  * FFmpeg is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * FFmpeg is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with FFmpeg; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  19  */
  20
  21 /**
  22  * @file
  23  * multimedia converter based on the FFmpeg libraries
  24  */
  25
  26 #include "config.h"
  27 #include <ctype.h>
  28 #include <string.h>
  29 #include <math.h>
  30 #include <stdlib.h>
  31 #include <errno.h>
  32 #include <limits.h>
  33 #if HAVE_ISATTY
  34 #if HAVE_IO_H
  35 #include <io.h>
  36 #endif
  37 #if HAVE_UNISTD_H
  38 #include <unistd.h>
  39 #endif
  40 #endif
  41 #include "libavformat/avformat.h"
  42 #include "libavdevice/avdevice.h"
  43 #include "libswscale/swscale.h"
  44 #include "libswresample/swresample.h"
  45 #include "libavutil/opt.h"
  46 #include "libavutil/channel_layout.h"
  47 #include "libavutil/parseutils.h"
  48 #include "libavutil/samplefmt.h"
  49 #include "libavutil/colorspace.h"
  50 #include "libavutil/fifo.h"
  51 #include "libavutil/intreadwrite.h"
  52 #include "libavutil/dict.h"
  53 #include "libavutil/mathematics.h"
  54 #include "libavutil/pixdesc.h"
  55 #include "libavutil/avstring.h"
  56 #include "libavutil/libm.h"
  57 #include "libavutil/imgutils.h"
  58 #include "libavutil/timestamp.h"
  59 #include "libavutil/bprint.h"
  60 #include "libavutil/time.h"
  61 #include "libavformat/os_support.h"
  62
  63 #include "libavformat/ffm.h" // not public API
  64
  65 # include "libavfilter/avcodec.h"
  66 # include "libavfilter/avfilter.h"
  67 # include "libavfilter/avfiltergraph.h"
  68 # include "libavfilter/buffersrc.h"
  69 # include "libavfilter/buffersink.h"
  70
  71 #if HAVE_SYS_RESOURCE_H
  72 #include <sys/time.h>
  73 #include <sys/types.h>
  74 #include <sys/resource.h>
  75 #elif HAVE_GETPROCESSTIMES
  76 #include <windows.h>
  77 #endif
  78 #if HAVE_GETPROCESSMEMORYINFO
  79 #include <windows.h>
  80 #include <psapi.h>
  81 #endif
  82
  83 #if HAVE_SYS_SELECT_H
  84 #include <sys/select.h>
  85 #endif
  86
  87 #if HAVE_TERMIOS_H
  88 #include <fcntl.h>
  89 #include <sys/ioctl.h>
  90 #include <sys/time.h>
  91 #include <termios.h>
  92 #elif HAVE_KBHIT
  93 #include <conio.h>
  94 #endif
  95
  96 #if HAVE_PTHREADS
  97 #include <pthread.h>
  98 #endif
  99
 100 #include <time.h>
 101
 102 #include "ffmpeg.h"
 103 #include "cmdutils.h"
 104
 105 #include "libavutil/avassert.h"
 106
 107 const char program_name[] = "ffmpeg";
 108 const int program_birth_year = 2000;
 109
 110 static FILE *vstats_file;
 111
 112 static void do_video_stats(OutputStream *ost, int frame_size);
 113 static int64_t getutime(void);
 114
 115 static int run_as_daemon  = 0;
 116 static int64_t video_size = 0;
 117 static int64_t audio_size = 0;
 118 static int64_t subtitle_size = 0;
 119 static int64_t extra_size = 0;
 120 static int nb_frames_dup = 0;
 121 static int nb_frames_drop = 0;
 122
 123 static int current_time;
 124 AVIOContext *progress_avio = NULL;
 125
 126 static uint8_t *subtitle_out;
 127
 128 #if HAVE_PTHREADS
 129 /* signal to input threads that they should exit; set by the main thread */
 130 static int transcoding_finished;
 131 #endif
 132
 133 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
 134
 135 InputStream **input_streams = NULL;
 136 int        nb_input_streams = 0;
 137 InputFile   **input_files   = NULL;
 138 int        nb_input_files   = 0;
 139
 140 OutputStream **output_streams = NULL;
 141 int         nb_output_streams = 0;
 142 OutputFile   **output_files   = NULL;
 143 int         nb_output_files   = 0;
 144
 145 FilterGraph **filtergraphs;
 146 int        nb_filtergraphs;
 147
 148 #if HAVE_TERMIOS_H
 149
 150 /* init terminal so that we can grab keys */
 151 static struct termios oldtty;
 152 static int restore_tty;
 153 #endif
 154
 155
 156 /* sub2video hack:
 157    Convert subtitles to video with alpha to insert them in filter graphs.
 158    This is a temporary solution until libavfilter gets real subtitles support.
 159  */
 160
 161
 162
 163 static void sub2video_copy_rect(uint8_t *dst, int dst_linesize, int w, int h,
 164                                 AVSubtitleRect *r)
 165 {
 166     uint32_t *pal, *dst2;
 167     uint8_t *src, *src2;
 168     int x, y;
 169
 170     if (r->type != SUBTITLE_BITMAP) {
 171         av_log(NULL, AV_LOG_WARNING, "sub2video: non-bitmap subtitle\n");
 172         return;
 173     }
 174     if (r->x < 0 || r->x + r->w > w || r->y < 0 || r->y + r->h > h) {
 175         av_log(NULL, AV_LOG_WARNING, "sub2video: rectangle overflowing\n");
 176         return;
 177     }
 178
 179     dst += r->y * dst_linesize + r->x * 4;
 180     src = r->pict.data[0];
 181     pal = (uint32_t *)r->pict.data[1];
 182     for (y = 0; y < r->h; y++) {
 183         dst2 = (uint32_t *)dst;
 184         src2 = src;
 185         for (x = 0; x < r->w; x++)
 186             *(dst2++) = pal[*(src2++)];
 187         dst += dst_linesize;
 188         src += r->pict.linesize[0];
 189     }
 190 }
 191
 192 static void sub2video_push_ref(InputStream *ist, int64_t pts)
 193 {
 194     AVFilterBufferRef *ref = ist->sub2video.ref;
 195     int i;
 196
 197     ist->sub2video.last_pts = ref->pts = pts;
 198     for (i = 0; i < ist->nb_filters; i++)
 199         av_buffersrc_add_ref(ist->filters[i]->filter,
 200                              avfilter_ref_buffer(ref, ~0),
 201                              AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT |
 202                              AV_BUFFERSRC_FLAG_NO_COPY |
 203                              AV_BUFFERSRC_FLAG_PUSH);
 204 }
 205
 206 static void sub2video_update(InputStream *ist, AVSubtitle *sub)
 207 {
 208     int w = ist->sub2video.w, h = ist->sub2video.h;
 209     AVFilterBufferRef *ref = ist->sub2video.ref;
 210     int8_t *dst;
 211     int     dst_linesize;
 212     int num_rects, i;
 213     int64_t pts, end_pts;
 214
 215     if (!ref)
 216         return;
 217     if (sub) {
 218         pts       = av_rescale_q(sub->pts + sub->start_display_time * 1000,
 219                                  AV_TIME_BASE_Q, ist->st->time_base);
 220         end_pts   = av_rescale_q(sub->pts + sub->end_display_time   * 1000,
 221                                  AV_TIME_BASE_Q, ist->st->time_base);
 222         num_rects = sub->num_rects;
 223     } else {
 224         pts       = ist->sub2video.end_pts;
 225         end_pts   = INT64_MAX;
 226         num_rects = 0;
 227     }
 228     dst          = ref->data    [0];
 229     dst_linesize = ref->linesize[0];
 230     memset(dst, 0, h * dst_linesize);
 231     for (i = 0; i < num_rects; i++)
 232         sub2video_copy_rect(dst, dst_linesize, w, h, sub->rects[i]);
 233     sub2video_push_ref(ist, pts);
 234     ist->sub2video.end_pts = end_pts;
 235 }
 236
 237 static void sub2video_heartbeat(InputStream *ist, int64_t pts)
 238 {
 239     InputFile *infile = input_files[ist->file_index];
 240     int i, j, nb_reqs;
 241     int64_t pts2;
 242
 243     /* When a frame is read from a file, examine all sub2video streams in
 244        the same file and send the sub2video frame again. Otherwise, decoded
 245        video frames could be accumulating in the filter graph while a filter
 246        (possibly overlay) is desperately waiting for a subtitle frame. */
 247     for (i = 0; i < infile->nb_streams; i++) {
 248         InputStream *ist2 = input_streams[infile->ist_index + i];
 249         if (!ist2->sub2video.ref)
 250             continue;
 251         /* subtitles seem to be usually muxed ahead of other streams;
 252            if not, substracting a larger time here is necessary */
 253         pts2 = av_rescale_q(pts, ist->st->time_base, ist2->st->time_base) - 1;
 254         /* do not send the heartbeat frame if the subtitle is already ahead */
 255         if (pts2 <= ist2->sub2video.last_pts)
 256             continue;
 257         if (pts2 >= ist2->sub2video.end_pts)
 258             sub2video_update(ist2, NULL);
 259         for (j = 0, nb_reqs = 0; j < ist2->nb_filters; j++)
 260             nb_reqs += av_buffersrc_get_nb_failed_requests(ist2->filters[j]->filter);
 261         if (nb_reqs)
 262             sub2video_push_ref(ist2, pts2);
 263     }
 264 }
 265
 266 static void sub2video_flush(InputStream *ist)
 267 {
 268     int i;
 269
 270     for (i = 0; i < ist->nb_filters; i++)
 271         av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
 272 }
 273
 274 /* end of sub2video hack */
 275
 276 void term_exit(void)
 277 {
 278     av_log(NULL, AV_LOG_QUIET, "%s", "");
 279 #if HAVE_TERMIOS_H
 280     if(restore_tty)
 281         tcsetattr (0, TCSANOW, &oldtty);
 282 #endif
 283 }
 284
 285 static volatile int received_sigterm = 0;
 286 static volatile int received_nb_signals = 0;
 287
 288 static void
 289 sigterm_handler(int sig)
 290 {
 291     received_sigterm = sig;
 292     received_nb_signals++;
 293     term_exit();
 294     if(received_nb_signals > 3)
 295         exit(123);
 296 }
 297
 298 void term_init(void)
 299 {
 300 #if HAVE_TERMIOS_H
 301     if(!run_as_daemon){
 302         struct termios tty;
 303         int istty = 1;
 304 #if HAVE_ISATTY
 305         istty = isatty(0) && isatty(2);
 306 #endif
 307         if (istty && tcgetattr (0, &tty) == 0) {
 308             oldtty = tty;
 309             restore_tty = 1;
 310             atexit(term_exit);
 311
 312             tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
 313                              |INLCR|IGNCR|ICRNL|IXON);
 314             tty.c_oflag |= OPOST;
 315             tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
 316             tty.c_cflag &= ~(CSIZE|PARENB);
 317             tty.c_cflag |= CS8;
 318             tty.c_cc[VMIN] = 1;
 319             tty.c_cc[VTIME] = 0;
 320
 321             tcsetattr (0, TCSANOW, &tty);
 322         }
 323         signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
 324     }
 325 #endif
 326     avformat_network_deinit();
 327
 328     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
 329     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
 330 #ifdef SIGXCPU
 331     signal(SIGXCPU, sigterm_handler);
 332 #endif
 333 }
 334
 335 /* read a key without blocking */
 336 static int read_key(void)
 337 {
 338     unsigned char ch;
 339 #if HAVE_TERMIOS_H
 340     int n = 1;
 341     struct timeval tv;
 342     fd_set rfds;
 343
 344     FD_ZERO(&rfds);
 345     FD_SET(0, &rfds);
 346     tv.tv_sec = 0;
 347     tv.tv_usec = 0;
 348     n = select(1, &rfds, NULL, NULL, &tv);
 349     if (n > 0) {
 350         n = read(0, &ch, 1);
 351         if (n == 1)
 352             return ch;
 353
 354         return n;
 355     }
 356 #elif HAVE_KBHIT
 357 #    if HAVE_PEEKNAMEDPIPE
 358     static int is_pipe;
 359     static HANDLE input_handle;
 360     DWORD dw, nchars;
 361     if(!input_handle){
 362         input_handle = GetStdHandle(STD_INPUT_HANDLE);
 363         is_pipe = !GetConsoleMode(input_handle, &dw);
 364     }
 365
 366     if (stdin->_cnt > 0) {
 367         read(0, &ch, 1);
 368         return ch;
 369     }
 370     if (is_pipe) {
 371         /* When running under a GUI, you will end here. */
 372         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL)) {
 373             // input pipe may have been closed by the program that ran ffmpeg
 374             return -1;
 375         }
 376         //Read it
 377         if(nchars != 0) {
 378             read(0, &ch, 1);
 379             return ch;
 380         }else{
 381             return -1;
 382         }
 383     }
 384 #    endif
 385     if(kbhit())
 386         return(getch());
 387 #endif
 388     return -1;
 389 }
 390
 391 static int decode_interrupt_cb(void *ctx)
 392 {
 393     return received_nb_signals > 1;
 394 }
 395
 396 const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
 397
 398 static void exit_program(void)
 399 {
 400     int i, j;
 401
 402     for (i = 0; i < nb_filtergraphs; i++) {
 403         avfilter_graph_free(&filtergraphs[i]->graph);
 404         for (j = 0; j < filtergraphs[i]->nb_inputs; j++) {
 405             av_freep(&filtergraphs[i]->inputs[j]->name);
 406             av_freep(&filtergraphs[i]->inputs[j]);
 407         }
 408         av_freep(&filtergraphs[i]->inputs);
 409         for (j = 0; j < filtergraphs[i]->nb_outputs; j++) {
 410             av_freep(&filtergraphs[i]->outputs[j]->name);
 411             av_freep(&filtergraphs[i]->outputs[j]);
 412         }
 413         av_freep(&filtergraphs[i]->outputs);
 414         av_freep(&filtergraphs[i]);
 415     }
 416     av_freep(&filtergraphs);
 417
 418     av_freep(&subtitle_out);
 419
 420     /* close files */
 421     for (i = 0; i < nb_output_files; i++) {
 422         AVFormatContext *s = output_files[i]->ctx;
 423         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
 424             avio_close(s->pb);
 425         avformat_free_context(s);
 426         av_dict_free(&output_files[i]->opts);
 427         av_freep(&output_files[i]);
 428     }
 429     for (i = 0; i < nb_output_streams; i++) {
 430         AVBitStreamFilterContext *bsfc = output_streams[i]->bitstream_filters;
 431         while (bsfc) {
 432             AVBitStreamFilterContext *next = bsfc->next;
 433             av_bitstream_filter_close(bsfc);
 434             bsfc = next;
 435         }
 436         output_streams[i]->bitstream_filters = NULL;
 437         avcodec_free_frame(&output_streams[i]->filtered_frame);
 438
 439         av_freep(&output_streams[i]->forced_keyframes);
 440         av_freep(&output_streams[i]->avfilter);
 441         av_freep(&output_streams[i]->logfile_prefix);
 442         av_freep(&output_streams[i]);
 443     }
 444     for (i = 0; i < nb_input_files; i++) {
 445         avformat_close_input(&input_files[i]->ctx);
 446         av_freep(&input_files[i]);
 447     }
 448     for (i = 0; i < nb_input_streams; i++) {
 449         avcodec_free_frame(&input_streams[i]->decoded_frame);
 450         av_dict_free(&input_streams[i]->opts);
 451         free_buffer_pool(&input_streams[i]->buffer_pool);
 452         avfilter_unref_bufferp(&input_streams[i]->sub2video.ref);
 453         av_freep(&input_streams[i]->filters);
 454         av_freep(&input_streams[i]);
 455     }
 456
 457     if (vstats_file)
 458         fclose(vstats_file);
 459     av_free(vstats_filename);
 460
 461     av_freep(&input_streams);
 462     av_freep(&input_files);
 463     av_freep(&output_streams);
 464     av_freep(&output_files);
 465
 466     uninit_opts();
 467
 468     avfilter_uninit();
 469     avformat_network_deinit();
 470
 471     if (received_sigterm) {
 472         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
 473                (int) received_sigterm);
 474         exit (255);
 475     }
 476 }
 477
 478 void assert_avoptions(AVDictionary *m)
 479 {
 480     AVDictionaryEntry *t;
 481     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
 482         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
 483         exit(1);
 484     }
 485 }
 486
 487 static void abort_codec_experimental(AVCodec *c, int encoder)
 488 {
 489     exit(1);
 490 }
 491
 492 static void update_benchmark(const char *fmt, ...)
 493 {
 494     if (do_benchmark_all) {
 495         int64_t t = getutime();
 496         va_list va;
 497         char buf[1024];
 498
 499         if (fmt) {
 500             va_start(va, fmt);
 501             vsnprintf(buf, sizeof(buf), fmt, va);
 502             va_end(va);
 503             printf("bench: %8"PRIu64" %s \n", t - current_time, buf);
 504         }
 505         current_time = t;
 506     }
 507 }
 508
 509 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
 510 {
 511     AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
 512     AVCodecContext          *avctx = ost->st->codec;
 513     int ret;
 514
 515     if ((avctx->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
 516         (avctx->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
 517         pkt->pts = pkt->dts = AV_NOPTS_VALUE;
 518
 519     if ((avctx->codec_type == AVMEDIA_TYPE_AUDIO || avctx->codec_type == AVMEDIA_TYPE_VIDEO) && pkt->dts != AV_NOPTS_VALUE) {
 520         int64_t max = ost->st->cur_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
 521         if (ost->st->cur_dts && ost->st->cur_dts != AV_NOPTS_VALUE &&  max > pkt->dts) {
 522             av_log(s, max - pkt->dts > 2 || avctx->codec_type == AVMEDIA_TYPE_VIDEO ? AV_LOG_WARNING : AV_LOG_DEBUG,
 523                    "st:%d PTS: %"PRId64" DTS: %"PRId64" < %"PRId64" invalid, clipping\n", pkt->stream_index, pkt->pts, pkt->dts, max);
 524             if(pkt->pts >= pkt->dts)
 525                 pkt->pts = FFMAX(pkt->pts, max);
 526             pkt->dts = max;
 527         }
 528     }
 529
 530     /*
 531      * Audio encoders may split the packets --  #frames in != #packets out.
 532      * But there is no reordering, so we can limit the number of output packets
 533      * by simply dropping them here.
 534      * Counting encoded video frames needs to be done separately because of
 535      * reordering, see do_video_out()
 536      */
 537     if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
 538         if (ost->frame_number >= ost->max_frames) {
 539             av_free_packet(pkt);
 540             return;
 541         }
 542         ost->frame_number++;
 543     }
 544
 545     while (bsfc) {
 546         AVPacket new_pkt = *pkt;
 547         int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
 548                                            &new_pkt.data, &new_pkt.size,
 549                                            pkt->data, pkt->size,
 550                                            pkt->flags & AV_PKT_FLAG_KEY);
 551         if(a == 0 && new_pkt.data != pkt->data && new_pkt.destruct) {
 552             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
 553             if(t) {
 554                 memcpy(t, new_pkt.data, new_pkt.size);
 555                 memset(t + new_pkt.size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
 556                 new_pkt.data = t;
 557                 a = 1;
 558             } else
 559                 a = AVERROR(ENOMEM);
 560         }
 561         if (a > 0) {
 562             av_free_packet(pkt);
 563             new_pkt.destruct = av_destruct_packet;
 564         } else if (a < 0) {
 565             av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
 566                    bsfc->filter->name, pkt->stream_index,
 567                    avctx->codec ? avctx->codec->name : "copy");
 568             print_error("", a);
 569             if (exit_on_error)
 570                 exit(1);
 571         }
 572         *pkt = new_pkt;
 573
 574         bsfc = bsfc->next;
 575     }
 576
 577     pkt->stream_index = ost->index;
 578
 579     if (debug_ts) {
 580         av_log(NULL, AV_LOG_INFO, "muxer <- type:%s "
 581                 "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s size:%d\n",
 582                 av_get_media_type_string(ost->st->codec->codec_type),
 583                 av_ts2str(pkt->pts), av_ts2timestr(pkt->pts, &ost->st->time_base),
 584                 av_ts2str(pkt->dts), av_ts2timestr(pkt->dts, &ost->st->time_base),
 585                 pkt->size
 586               );
 587     }
 588
 589     ret = av_interleaved_write_frame(s, pkt);
 590     if (ret < 0) {
 591         print_error("av_interleaved_write_frame()", ret);
 592         exit(1);
 593     }
 594 }
 595
 596 static void close_output_stream(OutputStream *ost)
 597 {
 598     OutputFile *of = output_files[ost->file_index];
 599
 600     ost->finished = 1;
 601     if (of->shortest) {
 602         int64_t end = av_rescale_q(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, AV_TIME_BASE_Q);
 603         of->recording_time = FFMIN(of->recording_time, end);
 604     }
 605 }
 606
 607 static int check_recording_time(OutputStream *ost)
 608 {
 609     OutputFile *of = output_files[ost->file_index];
 610
 611     if (of->recording_time != INT64_MAX &&
 612         av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
 613                       AV_TIME_BASE_Q) >= 0) {
 614         close_output_stream(ost);
 615         return 0;
 616     }
 617     return 1;
 618 }
 619
 620 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
 621                          AVFrame *frame)
 622 {
 623     AVCodecContext *enc = ost->st->codec;
 624     AVPacket pkt;
 625     int got_packet = 0;
 626
 627     av_init_packet(&pkt);
 628     pkt.data = NULL;
 629     pkt.size = 0;
 630
 631     if (!check_recording_time(ost))
 632         return;
 633
 634     if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
 635         frame->pts = ost->sync_opts;
 636     ost->sync_opts = frame->pts + frame->nb_samples;
 637
 638     av_assert0(pkt.size || !pkt.data);
 639     update_benchmark(NULL);
 640     if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
 641         av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
 642         exit(1);
 643     }
 644     update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
 645
 646     if (got_packet) {
 647         if (pkt.pts != AV_NOPTS_VALUE)
 648             pkt.pts      = av_rescale_q(pkt.pts,      enc->time_base, ost->st->time_base);
 649         if (pkt.dts != AV_NOPTS_VALUE)
 650             pkt.dts      = av_rescale_q(pkt.dts,      enc->time_base, ost->st->time_base);
 651         if (pkt.duration > 0)
 652             pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
 653
 654         if (debug_ts) {
 655             av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
 656                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
 657                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
 658                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
 659         }
 660
 661         audio_size += pkt.size;
 662         write_frame(s, &pkt, ost);
 663
 664         av_free_packet(&pkt);
 665     }
 666 }
 667
 668 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
 669 {
 670     AVCodecContext *dec;
 671     AVPicture *picture2;
 672     AVPicture picture_tmp;
 673     uint8_t *buf = 0;
 674
 675     dec = ist->st->codec;
 676
 677     /* deinterlace : must be done before any resize */
 678     if (do_deinterlace) {
 679         int size;
 680
 681         /* create temporary picture */
 682         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
 683         if (size < 0)
 684             return;
 685         buf  = av_malloc(size);
 686         if (!buf)
 687             return;
 688
 689         picture2 = &picture_tmp;
 690         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
 691
 692         if (avpicture_deinterlace(picture2, picture,
 693                                  dec->pix_fmt, dec->width, dec->height) < 0) {
 694             /* if error, do not deinterlace */
 695             av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
 696             av_free(buf);
 697             buf = NULL;
 698             picture2 = picture;
 699         }
 700     } else {
 701         picture2 = picture;
 702     }
 703
 704     if (picture != picture2)
 705         *picture = *picture2;
 706     *bufp = buf;
 707 }
 708
 709 static void do_subtitle_out(AVFormatContext *s,
 710                             OutputStream *ost,
 711                             InputStream *ist,
 712                             AVSubtitle *sub)
 713 {
 714     int subtitle_out_max_size = 1024 * 1024;
 715     int subtitle_out_size, nb, i;
 716     AVCodecContext *enc;
 717     AVPacket pkt;
 718     int64_t pts;
 719
 720     if (sub->pts == AV_NOPTS_VALUE) {
 721         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
 722         if (exit_on_error)
 723             exit(1);
 724         return;
 725     }
 726
 727     enc = ost->st->codec;
 728
 729     if (!subtitle_out) {
 730         subtitle_out = av_malloc(subtitle_out_max_size);
 731     }
 732
 733     /* Note: DVB subtitle need one packet to draw them and one other
 734        packet to clear them */
 735     /* XXX: signal it in the codec context ? */
 736     if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE)
 737         nb = 2;
 738     else
 739         nb = 1;
 740
 741     /* shift timestamp to honor -ss and make check_recording_time() work with -t */
 742     pts = sub->pts - output_files[ost->file_index]->start_time;
 743     for (i = 0; i < nb; i++) {
 744         ost->sync_opts = av_rescale_q(pts, AV_TIME_BASE_Q, enc->time_base);
 745         if (!check_recording_time(ost))
 746             return;
 747
 748         sub->pts = pts;
 749         // start_display_time is required to be 0
 750         sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
 751         sub->end_display_time  -= sub->start_display_time;
 752         sub->start_display_time = 0;
 753         if (i == 1)
 754             sub->num_rects = 0;
 755         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
 756                                                     subtitle_out_max_size, sub);
 757         if (subtitle_out_size < 0) {
 758             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
 759             exit(1);
 760         }
 761
 762         av_init_packet(&pkt);
 763         pkt.data = subtitle_out;
 764         pkt.size = subtitle_out_size;
 765         pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
 766         pkt.duration = av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->st->time_base);
 767         if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
 768             /* XXX: the pts correction is handled here. Maybe handling
 769                it in the codec would be better */
 770             if (i == 0)
 771                 pkt.pts += 90 * sub->start_display_time;
 772             else
 773                 pkt.pts += 90 * sub->end_display_time;
 774         }
 775         subtitle_size += pkt.size;
 776         write_frame(s, &pkt, ost);
 777     }
 778 }
 779
 780 static void do_video_out(AVFormatContext *s,
 781                          OutputStream *ost,
 782                          AVFrame *in_picture)
 783 {
 784     int ret, format_video_sync;
 785     AVPacket pkt;
 786     AVCodecContext *enc = ost->st->codec;
 787     int nb_frames, i;
 788     double sync_ipts, delta;
 789     double duration = 0;
 790     int frame_size = 0;
 791     InputStream *ist = NULL;
 792
 793     if (ost->source_index >= 0)
 794         ist = input_streams[ost->source_index];
 795
 796     if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
 797         duration = 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base));
 798
 799     sync_ipts = in_picture->pts;
 800     delta = sync_ipts - ost->sync_opts + duration;
 801
 802     /* by default, we output a single frame */
 803     nb_frames = 1;
 804
 805     format_video_sync = video_sync_method;
 806     if (format_video_sync == VSYNC_AUTO)
 807         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : VSYNC_CFR;
 808
 809     switch (format_video_sync) {
 810     case VSYNC_CFR:
 811         // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
 812         if (delta < -1.1)
 813             nb_frames = 0;
 814         else if (delta > 1.1)
 815             nb_frames = lrintf(delta);
 816         break;
 817     case VSYNC_VFR:
 818         if (delta <= -0.6)
 819             nb_frames = 0;
 820         else if (delta > 0.6)
 821             ost->sync_opts = lrint(sync_ipts);
 822         break;
 823     case VSYNC_DROP:
 824     case VSYNC_PASSTHROUGH:
 825         ost->sync_opts = lrint(sync_ipts);
 826         break;
 827     default:
 828         av_assert0(0);
 829     }
 830
 831     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
 832     if (nb_frames == 0) {
 833         nb_frames_drop++;
 834         av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
 835         return;
 836     } else if (nb_frames > 1) {
 837         if (nb_frames > dts_error_threshold * 30) {
 838             av_log(NULL, AV_LOG_ERROR, "%d frame duplication too large, skipping\n", nb_frames - 1);
 839             nb_frames_drop++;
 840             return;
 841         }
 842         nb_frames_dup += nb_frames - 1;
 843         av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
 844     }
 845
 846   /* duplicates frame if needed */
 847   for (i = 0; i < nb_frames; i++) {
 848     av_init_packet(&pkt);
 849     pkt.data = NULL;
 850     pkt.size = 0;
 851
 852     in_picture->pts = ost->sync_opts;
 853
 854     if (!check_recording_time(ost))
 855         return;
 856
 857     if (s->oformat->flags & AVFMT_RAWPICTURE &&
 858         enc->codec->id == AV_CODEC_ID_RAWVIDEO) {
 859         /* raw pictures are written as AVPicture structure to
 860            avoid any copies. We support temporarily the older
 861            method. */
 862         enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
 863         enc->coded_frame->top_field_first  = in_picture->top_field_first;
 864         if (enc->coded_frame->interlaced_frame)
 865             enc->field_order = enc->coded_frame->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
 866         else
 867             enc->field_order = AV_FIELD_PROGRESSIVE;
 868         pkt.data   = (uint8_t *)in_picture;
 869         pkt.size   =  sizeof(AVPicture);
 870         pkt.pts    = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
 871         pkt.flags |= AV_PKT_FLAG_KEY;
 872
 873         video_size += pkt.size;
 874         write_frame(s, &pkt, ost);
 875     } else {
 876         int got_packet;
 877         AVFrame big_picture;
 878
 879         big_picture = *in_picture;
 880         /* better than nothing: use input picture interlaced
 881            settings */
 882         big_picture.interlaced_frame = in_picture->interlaced_frame;
 883         if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
 884             if (ost->top_field_first == -1)
 885                 big_picture.top_field_first = in_picture->top_field_first;
 886             else
 887                 big_picture.top_field_first = !!ost->top_field_first;
 888         }
 889
 890         if (big_picture.interlaced_frame) {
 891             if (enc->codec->id == AV_CODEC_ID_MJPEG)
 892                 enc->field_order = big_picture.top_field_first ? AV_FIELD_TT:AV_FIELD_BB;
 893             else
 894                 enc->field_order = big_picture.top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
 895         } else
 896             enc->field_order = AV_FIELD_PROGRESSIVE;
 897
 898         big_picture.quality = ost->st->codec->global_quality;
 899         if (!enc->me_threshold)
 900             big_picture.pict_type = 0;
 901         if (ost->forced_kf_index < ost->forced_kf_count &&
 902             big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
 903             big_picture.pict_type = AV_PICTURE_TYPE_I;
 904             ost->forced_kf_index++;
 905         }
 906         update_benchmark(NULL);
 907         ret = avcodec_encode_video2(enc, &pkt, &big_picture, &got_packet);
 908         update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
 909         if (ret < 0) {
 910             av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
 911             exit(1);
 912         }
 913
 914         if (got_packet) {
 915             if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
 916                 pkt.pts = ost->sync_opts;
 917
 918             if (pkt.pts != AV_NOPTS_VALUE)
 919                 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
 920             if (pkt.dts != AV_NOPTS_VALUE)
 921                 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
 922
 923             if (debug_ts) {
 924                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
 925                     "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
 926                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
 927                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
 928             }
 929
 930             frame_size = pkt.size;
 931             video_size += pkt.size;
 932             write_frame(s, &pkt, ost);
 933             av_free_packet(&pkt);
 934
 935             /* if two pass, output log */
 936             if (ost->logfile && enc->stats_out) {
 937                 fprintf(ost->logfile, "%s", enc->stats_out);
 938             }
 939         }
 940     }
 941     ost->sync_opts++;
 942     /*
 943      * For video, number of frames in == number of packets out.
 944      * But there may be reordering, so we can't throw away frames on encoder
 945      * flush, we need to limit them here, before they go into encoder.
 946      */
 947     ost->frame_number++;
 948   }
 949
 950     if (vstats_filename && frame_size)
 951         do_video_stats(ost, frame_size);
 952 }
 953
 954 static double psnr(double d)
 955 {
 956     return -10.0 * log(d) / log(10.0);
 957 }
 958
 959 static void do_video_stats(OutputStream *ost, int frame_size)
 960 {
 961     AVCodecContext *enc;
 962     int frame_number;
 963     double ti1, bitrate, avg_bitrate;
 964
 965     /* this is executed just the first time do_video_stats is called */
 966     if (!vstats_file) {
 967         vstats_file = fopen(vstats_filename, "w");
 968         if (!vstats_file) {
 969             perror("fopen");
 970             exit(1);
 971         }
 972     }
 973
 974     enc = ost->st->codec;
 975     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
 976         frame_number = ost->st->nb_frames;
 977         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
 978         if (enc->flags&CODEC_FLAG_PSNR)
 979             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
 980
 981         fprintf(vstats_file,"f_size= %6d ", frame_size);
 982         /* compute pts value */
 983         ti1 = ost->st->pts.val * av_q2d(enc->time_base);
 984         if (ti1 < 0.01)
 985             ti1 = 0.01;
 986
 987         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
 988         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
 989         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
 990                (double)video_size / 1024, ti1, bitrate, avg_bitrate);
 991         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
 992     }
 993 }
 994
 995 /**
 996  * Get and encode new output from any of the filtergraphs, without causing
 997  * activity.
 998  *
 999  * @return  0 for success, <0 for severe errors
1000  */
1001 static int reap_filters(void)
1002 {
1003     AVFilterBufferRef *picref;
1004     AVFrame *filtered_frame = NULL;
1005     int i;
1006     int64_t frame_pts;
1007
1008     /* Reap all buffers present in the buffer sinks */
1009     for (i = 0; i < nb_output_streams; i++) {
1010         OutputStream *ost = output_streams[i];
1011         OutputFile    *of = output_files[ost->file_index];
1012         int ret = 0;
1013
1014         if (!ost->filter)
1015             continue;
1016
1017         if (!ost->filtered_frame && !(ost->filtered_frame = avcodec_alloc_frame())) {
1018             return AVERROR(ENOMEM);
1019         } else
1020             avcodec_get_frame_defaults(ost->filtered_frame);
1021         filtered_frame = ost->filtered_frame;
1022
1023         while (1) {
1024             ret = av_buffersink_get_buffer_ref(ost->filter->filter, &picref,
1025                                                AV_BUFFERSINK_FLAG_NO_REQUEST);
1026             if (ret < 0) {
1027                 if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
1028                     char buf[256];
1029                     av_strerror(ret, buf, sizeof(buf));
1030                     av_log(NULL, AV_LOG_WARNING,
1031                            "Error in av_buffersink_get_buffer_ref(): %s\n", buf);
1032                 }
1033                 break;
1034             }
1035             frame_pts = AV_NOPTS_VALUE;
1036             if (picref->pts != AV_NOPTS_VALUE) {
1037                 filtered_frame->pts = frame_pts = av_rescale_q(picref->pts,
1038                                                 ost->filter->filter->inputs[0]->time_base,
1039                                                 ost->st->codec->time_base) -
1040                                     av_rescale_q(of->start_time,
1041                                                 AV_TIME_BASE_Q,
1042                                                 ost->st->codec->time_base);
1043
1044                 if (of->start_time && filtered_frame->pts < 0) {
1045                     avfilter_unref_buffer(picref);
1046                     continue;
1047                 }
1048             }
1049             //if (ost->source_index >= 0)
1050             //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
1051
1052
1053             switch (ost->filter->filter->inputs[0]->type) {
1054             case AVMEDIA_TYPE_VIDEO:
1055                 avfilter_copy_buf_props(filtered_frame, picref);
1056                 filtered_frame->pts = frame_pts;
1057                 if (!ost->frame_aspect_ratio)
1058                     ost->st->codec->sample_aspect_ratio = picref->video->sample_aspect_ratio;
1059
1060                 do_video_out(of->ctx, ost, filtered_frame);
1061                 break;
1062             case AVMEDIA_TYPE_AUDIO:
1063                 avfilter_copy_buf_props(filtered_frame, picref);
1064                 filtered_frame->pts = frame_pts;
1065                 do_audio_out(of->ctx, ost, filtered_frame);
1066                 break;
1067             default:
1068                 // TODO support subtitle filters
1069                 av_assert0(0);
1070             }
1071
1072             avfilter_unref_buffer(picref);
1073         }
1074     }
1075
1076     return 0;
1077 }
1078
1079 static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
1080 {
1081     char buf[1024];
1082     AVBPrint buf_script;
1083     OutputStream *ost;
1084     AVFormatContext *oc;
1085     int64_t total_size;
1086     AVCodecContext *enc;
1087     int frame_number, vid, i;
1088     double bitrate;
1089     int64_t pts = INT64_MIN;
1090     static int64_t last_time = -1;
1091     static int qp_histogram[52];
1092     int hours, mins, secs, us;
1093
1094     if (!print_stats && !is_last_report && !progress_avio)
1095         return;
1096
1097     if (!is_last_report) {
1098         if (last_time == -1) {
1099             last_time = cur_time;
1100             return;
1101         }
1102         if ((cur_time - last_time) < 500000)
1103             return;
1104         last_time = cur_time;
1105     }
1106
1107
1108     oc = output_files[0]->ctx;
1109
1110     total_size = avio_size(oc->pb);
1111     if (total_size <= 0) // FIXME improve avio_size() so it works with non seekable output too
1112         total_size = avio_tell(oc->pb);
1113
1114     buf[0] = '\0';
1115     vid = 0;
1116     av_bprint_init(&buf_script, 0, 1);
1117     for (i = 0; i < nb_output_streams; i++) {
1118         float q = -1;
1119         ost = output_streams[i];
1120         enc = ost->st->codec;
1121         if (!ost->stream_copy && enc->coded_frame)
1122             q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
1123         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1124             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1125             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1126                        ost->file_index, ost->index, q);
1127         }
1128         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1129             float fps, t = (cur_time-timer_start) / 1000000.0;
1130
1131             frame_number = ost->frame_number;
1132             fps = t > 1 ? frame_number / t : 0;
1133             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
1134                      frame_number, fps < 9.95, fps, q);
1135             av_bprintf(&buf_script, "frame=%d\n", frame_number);
1136             av_bprintf(&buf_script, "fps=%.1f\n", fps);
1137             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1138                        ost->file_index, ost->index, q);
1139             if (is_last_report)
1140                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1141             if (qp_hist) {
1142                 int j;
1143                 int qp = lrintf(q);
1144                 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
1145                     qp_histogram[qp]++;
1146                 for (j = 0; j < 32; j++)
1147                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log2(qp_histogram[j] + 1)));
1148             }
1149             if ((enc->flags&CODEC_FLAG_PSNR) && (enc->coded_frame || is_last_report)) {
1150                 int j;
1151                 double error, error_sum = 0;
1152                 double scale, scale_sum = 0;
1153                 double p;
1154                 char type[3] = { 'Y','U','V' };
1155                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1156                 for (j = 0; j < 3; j++) {
1157                     if (is_last_report) {
1158                         error = enc->error[j];
1159                         scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
1160                     } else {
1161                         error = enc->coded_frame->error[j];
1162                         scale = enc->width * enc->height * 255.0 * 255.0;
1163                     }
1164                     if (j)
1165                         scale /= 4;
1166                     error_sum += error;
1167                     scale_sum += scale;
1168                     p = psnr(error / scale);
1169                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], p);
1170                     av_bprintf(&buf_script, "stream_%d_%d_psnr_%c=%2.2f\n",
1171                                ost->file_index, ost->index, type[i] | 32, p);
1172                 }
1173                 p = psnr(error_sum / scale_sum);
1174                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
1175                 av_bprintf(&buf_script, "stream_%d_%d_psnr_all=%2.2f\n",
1176                            ost->file_index, ost->index, p);
1177             }
1178             vid = 1;
1179         }
1180         /* compute min output value */
1181         if ((is_last_report || !ost->finished) && ost->st->pts.val != AV_NOPTS_VALUE)
1182             pts = FFMAX(pts, av_rescale_q(ost->st->pts.val,
1183                                           ost->st->time_base, AV_TIME_BASE_Q));
1184     }
1185
1186     secs = pts / AV_TIME_BASE;
1187     us = pts % AV_TIME_BASE;
1188     mins = secs / 60;
1189     secs %= 60;
1190     hours = mins / 60;
1191     mins %= 60;
1192
1193     bitrate = pts && total_size >= 0 ? total_size * 8 / (pts / 1000.0) : -1;
1194
1195     if (total_size < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1196                                  "size=N/A time=");
1197     else                snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1198                                  "size=%8.0fkB time=", total_size / 1024.0);
1199     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1200              "%02d:%02d:%02d.%02d ", hours, mins, secs,
1201              (100 * us) / AV_TIME_BASE);
1202     if (bitrate < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1203                               "bitrate=N/A");
1204     else             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1205                               "bitrate=%6.1fkbits/s", bitrate);
1206     if (total_size < 0) av_bprintf(&buf_script, "total_size=N/A\n");
1207     else                av_bprintf(&buf_script, "total_size=%"PRId64"\n", total_size);
1208     av_bprintf(&buf_script, "out_time_ms=%"PRId64"\n", pts);
1209     av_bprintf(&buf_script, "out_time=%02d:%02d:%02d.%06d\n",
1210                hours, mins, secs, us);
1211
1212     if (nb_frames_dup || nb_frames_drop)
1213         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1214                 nb_frames_dup, nb_frames_drop);
1215     av_bprintf(&buf_script, "dup_frames=%d\n", nb_frames_dup);
1216     av_bprintf(&buf_script, "drop_frames=%d\n", nb_frames_drop);
1217
1218     if (print_stats || is_last_report) {
1219     av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
1220
1221     fflush(stderr);
1222     }
1223
1224     if (progress_avio) {
1225         av_bprintf(&buf_script, "progress=%s\n",
1226                    is_last_report ? "end" : "continue");
1227         avio_write(progress_avio, buf_script.str,
1228                    FFMIN(buf_script.len, buf_script.size - 1));
1229         avio_flush(progress_avio);
1230         av_bprint_finalize(&buf_script, NULL);
1231         if (is_last_report) {
1232             avio_close(progress_avio);
1233             progress_avio = NULL;
1234         }
1235     }
1236
1237     if (is_last_report) {
1238         int64_t raw= audio_size + video_size + subtitle_size + extra_size;
1239         av_log(NULL, AV_LOG_INFO, "\n");
1240         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB subtitle:%1.0f global headers:%1.0fkB muxing overhead %f%%\n",
1241                video_size / 1024.0,
1242                audio_size / 1024.0,
1243                subtitle_size / 1024.0,
1244                extra_size / 1024.0,
1245                100.0 * (total_size - raw) / raw
1246         );
1247         if(video_size + audio_size + subtitle_size + extra_size == 0){
1248             av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
1249         }
1250     }
1251 }
1252
1253 static void flush_encoders(void)
1254 {
1255     int i, ret;
1256
1257     for (i = 0; i < nb_output_streams; i++) {
1258         OutputStream   *ost = output_streams[i];
1259         AVCodecContext *enc = ost->st->codec;
1260         AVFormatContext *os = output_files[ost->file_index]->ctx;
1261         int stop_encoding = 0;
1262
1263         if (!ost->encoding_needed)
1264             continue;
1265
1266         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
1267             continue;
1268         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == AV_CODEC_ID_RAWVIDEO)
1269             continue;
1270
1271         for (;;) {
1272             int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
1273             const char *desc;
1274             int64_t *size;
1275
1276             switch (ost->st->codec->codec_type) {
1277             case AVMEDIA_TYPE_AUDIO:
1278                 encode = avcodec_encode_audio2;
1279                 desc   = "Audio";
1280                 size   = &audio_size;
1281                 break;
1282             case AVMEDIA_TYPE_VIDEO:
1283                 encode = avcodec_encode_video2;
1284                 desc   = "Video";
1285                 size   = &video_size;
1286                 break;
1287             default:
1288                 stop_encoding = 1;
1289             }
1290
1291             if (encode) {
1292                 AVPacket pkt;
1293                 int got_packet;
1294                 av_init_packet(&pkt);
1295                 pkt.data = NULL;
1296                 pkt.size = 0;
1297
1298                 update_benchmark(NULL);
1299                 ret = encode(enc, &pkt, NULL, &got_packet);
1300                 update_benchmark("flush %s %d.%d", desc, ost->file_index, ost->index);
1301                 if (ret < 0) {
1302                     av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
1303                     exit(1);
1304                 }
1305                 *size += pkt.size;
1306                 if (ost->logfile && enc->stats_out) {
1307                     fprintf(ost->logfile, "%s", enc->stats_out);
1308                 }
1309                 if (!got_packet) {
1310                     stop_encoding = 1;
1311                     break;
1312                 }
1313                 if (pkt.pts != AV_NOPTS_VALUE)
1314                     pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
1315                 if (pkt.dts != AV_NOPTS_VALUE)
1316                     pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
1317                 if (pkt.duration > 0)
1318                     pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
1319                 write_frame(os, &pkt, ost);
1320                 if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && vstats_filename) {
1321                     do_video_stats(ost, pkt.size);
1322                 }
1323             }
1324
1325             if (stop_encoding)
1326                 break;
1327         }
1328     }
1329 }
1330
1331 /*
1332  * Check whether a packet from ist should be written into ost at this time
1333  */
1334 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1335 {
1336     OutputFile *of = output_files[ost->file_index];
1337     int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
1338
1339     if (ost->source_index != ist_index)
1340         return 0;
1341
1342     if (of->start_time && ist->pts < of->start_time)
1343         return 0;
1344
1345     return 1;
1346 }
1347
1348 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1349 {
1350     OutputFile *of = output_files[ost->file_index];
1351     int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1352     AVPicture pict;
1353     AVPacket opkt;
1354
1355     av_init_packet(&opkt);
1356
1357     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1358         !ost->copy_initial_nonkeyframes)
1359         return;
1360
1361     if (!ost->frame_number && ist->pts < of->start_time &&
1362         !ost->copy_prior_start)
1363         return;
1364
1365     if (of->recording_time != INT64_MAX &&
1366         ist->pts >= of->recording_time + of->start_time) {
1367         close_output_stream(ost);
1368         return;
1369     }
1370
1371     /* force the input stream PTS */
1372     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1373         audio_size += pkt->size;
1374     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1375         video_size += pkt->size;
1376         ost->sync_opts++;
1377     } else if (ost->st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
1378         subtitle_size += pkt->size;
1379     }
1380
1381     if (pkt->pts != AV_NOPTS_VALUE)
1382         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1383     else
1384         opkt.pts = AV_NOPTS_VALUE;
1385
1386     if (pkt->dts == AV_NOPTS_VALUE)
1387         opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
1388     else
1389         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1390     opkt.dts -= ost_tb_start_time;
1391
1392     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && pkt->dts != AV_NOPTS_VALUE) {
1393         int duration = av_get_audio_frame_duration(ist->st->codec, pkt->size);
1394         if(!duration)
1395             duration = ist->st->codec->frame_size;
1396         opkt.dts = opkt.pts = av_rescale_delta(ist->st->time_base, pkt->dts,
1397                                                (AVRational){1, ist->st->codec->sample_rate}, duration, &ist->filter_in_rescale_delta_last,
1398                                                ost->st->time_base) - ost_tb_start_time;
1399     }
1400
1401     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1402     opkt.flags    = pkt->flags;
1403
1404     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1405     if (  ost->st->codec->codec_id != AV_CODEC_ID_H264
1406        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG1VIDEO
1407        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG2VIDEO
1408        && ost->st->codec->codec_id != AV_CODEC_ID_VC1
1409        ) {
1410         if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY))
1411             opkt.destruct = av_destruct_packet;
1412     } else {
1413         opkt.data = pkt->data;
1414         opkt.size = pkt->size;
1415     }
1416
1417     if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (of->ctx->oformat->flags & AVFMT_RAWPICTURE)) {
1418         /* store AVPicture in AVPacket, as expected by the output format */
1419         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1420         opkt.data = (uint8_t *)&pict;
1421         opkt.size = sizeof(AVPicture);
1422         opkt.flags |= AV_PKT_FLAG_KEY;
1423     }
1424
1425     write_frame(of->ctx, &opkt, ost);
1426     ost->st->codec->frame_number++;
1427 }
1428
1429 static void rate_emu_sleep(InputStream *ist)
1430 {
1431     if (input_files[ist->file_index]->rate_emu) {
1432         int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
1433         int64_t now = av_gettime() - ist->start;
1434         if (pts > now)
1435             av_usleep(pts - now);
1436     }
1437 }
1438
1439 int guess_input_channel_layout(InputStream *ist)
1440 {
1441     AVCodecContext *dec = ist->st->codec;
1442
1443     if (!dec->channel_layout) {
1444         char layout_name[256];
1445
1446         dec->channel_layout = av_get_default_channel_layout(dec->channels);
1447         if (!dec->channel_layout)
1448             return 0;
1449         av_get_channel_layout_string(layout_name, sizeof(layout_name),
1450                                      dec->channels, dec->channel_layout);
1451         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for  Input Stream "
1452                "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
1453     }
1454     return 1;
1455 }
1456
1457 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1458 {
1459     AVFrame *decoded_frame;
1460     AVCodecContext *avctx = ist->st->codec;
1461     int i, ret, resample_changed;
1462     AVRational decoded_frame_tb;
1463
1464     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1465         return AVERROR(ENOMEM);
1466     decoded_frame = ist->decoded_frame;
1467
1468     update_benchmark(NULL);
1469     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1470     update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
1471
1472     if (ret >= 0 && avctx->sample_rate <= 0) {
1473         av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
1474         ret = AVERROR_INVALIDDATA;
1475     }
1476
1477     if (!*got_output || ret < 0) {
1478         if (!pkt->size) {
1479             for (i = 0; i < ist->nb_filters; i++)
1480                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1481         }
1482         return ret;
1483     }
1484
1485 #if 1
1486     /* increment next_dts to use for the case where the input stream does not
1487        have timestamps or there are multiple frames in the packet */
1488     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1489                      avctx->sample_rate;
1490     ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1491                      avctx->sample_rate;
1492 #endif
1493
1494     rate_emu_sleep(ist);
1495
1496     resample_changed = ist->resample_sample_fmt     != decoded_frame->format         ||
1497                        ist->resample_channels       != avctx->channels               ||
1498                        ist->resample_channel_layout != decoded_frame->channel_layout ||
1499                        ist->resample_sample_rate    != decoded_frame->sample_rate;
1500     if (resample_changed) {
1501         char layout1[64], layout2[64];
1502
1503         if (!guess_input_channel_layout(ist)) {
1504             av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
1505                    "layout for Input Stream #%d.%d\n", ist->file_index,
1506                    ist->st->index);
1507             exit(1);
1508         }
1509         decoded_frame->channel_layout = avctx->channel_layout;
1510
1511         av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
1512                                      ist->resample_channel_layout);
1513         av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
1514                                      decoded_frame->channel_layout);
1515
1516         av_log(NULL, AV_LOG_INFO,
1517                "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",
1518                ist->file_index, ist->st->index,
1519                ist->resample_sample_rate,  av_get_sample_fmt_name(ist->resample_sample_fmt),
1520                ist->resample_channels, layout1,
1521                decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
1522                avctx->channels, layout2);
1523
1524         ist->resample_sample_fmt     = decoded_frame->format;
1525         ist->resample_sample_rate    = decoded_frame->sample_rate;
1526         ist->resample_channel_layout = decoded_frame->channel_layout;
1527         ist->resample_channels       = avctx->channels;
1528
1529         for (i = 0; i < nb_filtergraphs; i++)
1530             if (ist_in_filtergraph(filtergraphs[i], ist)) {
1531                 FilterGraph *fg = filtergraphs[i];
1532                 int j;
1533                 if (configure_filtergraph(fg) < 0) {
1534                     av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1535                     exit(1);
1536                 }
1537                 for (j = 0; j < fg->nb_outputs; j++) {
1538                     OutputStream *ost = fg->outputs[j]->ost;
1539                     if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
1540                         !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
1541                         av_buffersink_set_frame_size(ost->filter->filter,
1542                                                      ost->st->codec->frame_size);
1543                 }
1544             }
1545     }
1546
1547     /* if the decoder provides a pts, use it instead of the last packet pts.
1548        the decoder could be delaying output by a packet or more. */
1549     if (decoded_frame->pts != AV_NOPTS_VALUE) {
1550         ist->dts = ist->next_dts = ist->pts = ist->next_pts = av_rescale_q(decoded_frame->pts, avctx->time_base, AV_TIME_BASE_Q);
1551         decoded_frame_tb   = avctx->time_base;
1552     } else if (decoded_frame->pkt_pts != AV_NOPTS_VALUE) {
1553         decoded_frame->pts = decoded_frame->pkt_pts;
1554         pkt->pts           = AV_NOPTS_VALUE;
1555         decoded_frame_tb   = ist->st->time_base;
1556     } else if (pkt->pts != AV_NOPTS_VALUE) {
1557         decoded_frame->pts = pkt->pts;
1558         pkt->pts           = AV_NOPTS_VALUE;
1559         decoded_frame_tb   = ist->st->time_base;
1560     }else {
1561         decoded_frame->pts = ist->dts;
1562         decoded_frame_tb   = AV_TIME_BASE_Q;
1563     }
1564     if (decoded_frame->pts != AV_NOPTS_VALUE)
1565         decoded_frame->pts = av_rescale_delta(decoded_frame_tb, decoded_frame->pts,
1566                                               (AVRational){1, ist->st->codec->sample_rate}, decoded_frame->nb_samples, &ist->filter_in_rescale_delta_last,
1567                                               (AVRational){1, ist->st->codec->sample_rate});
1568     for (i = 0; i < ist->nb_filters; i++)
1569         av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame,
1570                                AV_BUFFERSRC_FLAG_PUSH);
1571
1572     decoded_frame->pts = AV_NOPTS_VALUE;
1573
1574     return ret;
1575 }
1576
1577 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
1578 {
1579     AVFrame *decoded_frame;
1580     void *buffer_to_free = NULL;
1581     int i, ret = 0, resample_changed;
1582     int64_t best_effort_timestamp;
1583     AVRational *frame_sample_aspect;
1584
1585     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1586         return AVERROR(ENOMEM);
1587     decoded_frame = ist->decoded_frame;
1588     pkt->dts  = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
1589
1590     update_benchmark(NULL);
1591     ret = avcodec_decode_video2(ist->st->codec,
1592                                 decoded_frame, got_output, pkt);
1593     update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
1594     if (!*got_output || ret < 0) {
1595         if (!pkt->size) {
1596             for (i = 0; i < ist->nb_filters; i++)
1597                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1598         }
1599         return ret;
1600     }
1601
1602     if(ist->top_field_first>=0)
1603         decoded_frame->top_field_first = ist->top_field_first;
1604
1605     best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
1606     if(best_effort_timestamp != AV_NOPTS_VALUE)
1607         ist->next_pts = ist->pts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);
1608
1609     if (debug_ts) {
1610         av_log(NULL, AV_LOG_INFO, "decoder -> ist_index:%d type:video "
1611                 "frame_pts:%s frame_pts_time:%s best_effort_ts:%"PRId64" best_effort_ts_time:%s keyframe:%d frame_type:%d \n",
1612                 ist->st->index, av_ts2str(decoded_frame->pts),
1613                 av_ts2timestr(decoded_frame->pts, &ist->st->time_base),
1614                 best_effort_timestamp,
1615                 av_ts2timestr(best_effort_timestamp, &ist->st->time_base),
1616                 decoded_frame->key_frame, decoded_frame->pict_type);
1617     }
1618
1619     pkt->size = 0;
1620     pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
1621
1622     rate_emu_sleep(ist);
1623
1624     if (ist->st->sample_aspect_ratio.num)
1625         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1626
1627     resample_changed = ist->resample_width   != decoded_frame->width  ||
1628                        ist->resample_height  != decoded_frame->height ||
1629                        ist->resample_pix_fmt != decoded_frame->format;
1630     if (resample_changed) {
1631         av_log(NULL, AV_LOG_INFO,
1632                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1633                ist->file_index, ist->st->index,
1634                ist->resample_width,  ist->resample_height,  av_get_pix_fmt_name(ist->resample_pix_fmt),
1635                decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
1636
1637         ist->resample_width   = decoded_frame->width;
1638         ist->resample_height  = decoded_frame->height;
1639         ist->resample_pix_fmt = decoded_frame->format;
1640
1641         for (i = 0; i < nb_filtergraphs; i++) {
1642             if (ist_in_filtergraph(filtergraphs[i], ist) && ist->reinit_filters &&
1643                 configure_filtergraph(filtergraphs[i]) < 0) {
1644                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1645                 exit(1);
1646             }
1647         }
1648     }
1649
1650     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
1651     for (i = 0; i < ist->nb_filters; i++) {
1652         int changed =      ist->st->codec->width   != ist->filters[i]->filter->outputs[0]->w
1653                         || ist->st->codec->height  != ist->filters[i]->filter->outputs[0]->h
1654                         || ist->st->codec->pix_fmt != ist->filters[i]->filter->outputs[0]->format;
1655
1656         if (!frame_sample_aspect->num)
1657             *frame_sample_aspect = ist->st->sample_aspect_ratio;
1658         if (ist->dr1 && decoded_frame->type==FF_BUFFER_TYPE_USER && !changed) {
1659             FrameBuffer      *buf = decoded_frame->opaque;
1660             AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays(
1661                                         decoded_frame->data, decoded_frame->linesize,
1662                                         AV_PERM_READ | AV_PERM_PRESERVE,
1663                                         ist->st->codec->width, ist->st->codec->height,
1664                                         ist->st->codec->pix_fmt);
1665
1666             avfilter_copy_frame_props(fb, decoded_frame);
1667             fb->buf->priv           = buf;
1668             fb->buf->free           = filter_release_buffer;
1669
1670             av_assert0(buf->refcount>0);
1671             buf->refcount++;
1672             av_buffersrc_add_ref(ist->filters[i]->filter, fb,
1673                                  AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT |
1674                                  AV_BUFFERSRC_FLAG_NO_COPY |
1675                                  AV_BUFFERSRC_FLAG_PUSH);
1676         } else
1677         if(av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame, AV_BUFFERSRC_FLAG_PUSH)<0) {
1678             av_log(NULL, AV_LOG_FATAL, "Failed to inject frame into filter network\n");
1679             exit(1);
1680         }
1681
1682     }
1683
1684     av_free(buffer_to_free);
1685     return ret;
1686 }
1687
1688 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1689 {
1690     AVSubtitle subtitle;
1691     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
1692                                           &subtitle, got_output, pkt);
1693     if (ret < 0 || !*got_output) {
1694         if (!pkt->size)
1695             sub2video_flush(ist);
1696         return ret;
1697     }
1698
1699     if (ist->fix_sub_duration) {
1700         if (ist->prev_sub.got_output) {
1701             int end = av_rescale(subtitle.pts - ist->prev_sub.subtitle.pts,
1702                                  1000, AV_TIME_BASE);
1703             if (end < ist->prev_sub.subtitle.end_display_time) {
1704                 av_log(ist->st->codec, AV_LOG_DEBUG,
1705                        "Subtitle duration reduced from %d to %d\n",
1706                        ist->prev_sub.subtitle.end_display_time, end);
1707                 ist->prev_sub.subtitle.end_display_time = end;
1708             }
1709         }
1710         FFSWAP(int,        *got_output, ist->prev_sub.got_output);
1711         FFSWAP(int,        ret,         ist->prev_sub.ret);
1712         FFSWAP(AVSubtitle, subtitle,    ist->prev_sub.subtitle);
1713     }
1714
1715     sub2video_update(ist, &subtitle);
1716
1717     if (!*got_output || !subtitle.num_rects)
1718         return ret;
1719
1720     rate_emu_sleep(ist);
1721
1722     for (i = 0; i < nb_output_streams; i++) {
1723         OutputStream *ost = output_streams[i];
1724
1725         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1726             continue;
1727
1728         do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle);
1729     }
1730
1731     avsubtitle_free(&subtitle);
1732     return ret;
1733 }
1734
1735 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1736 static int output_packet(InputStream *ist, const AVPacket *pkt)
1737 {
1738     int ret = 0, i;
1739     int got_output;
1740
1741     AVPacket avpkt;
1742     if (!ist->saw_first_ts) {
1743         ist->dts = ist->st->avg_frame_rate.num ? - ist->st->codec->has_b_frames * AV_TIME_BASE / av_q2d(ist->st->avg_frame_rate) : 0;
1744         ist->pts = 0;
1745         if (pkt != NULL && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
1746             ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1747             ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
1748         }
1749         ist->saw_first_ts = 1;
1750     }
1751
1752     if (ist->next_dts == AV_NOPTS_VALUE)
1753         ist->next_dts = ist->dts;
1754     if (ist->next_pts == AV_NOPTS_VALUE)
1755         ist->next_pts = ist->pts;
1756
1757     if (pkt == NULL) {
1758         /* EOF handling */
1759         av_init_packet(&avpkt);
1760         avpkt.data = NULL;
1761         avpkt.size = 0;
1762         goto handle_eof;
1763     } else {
1764         avpkt = *pkt;
1765     }
1766
1767     if (pkt->dts != AV_NOPTS_VALUE) {
1768         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1769         if (ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
1770             ist->next_pts = ist->pts = ist->dts;
1771     }
1772
1773     // while we have more to decode or while the decoder did output something on EOF
1774     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
1775         int duration;
1776     handle_eof:
1777
1778         ist->pts = ist->next_pts;
1779         ist->dts = ist->next_dts;
1780
1781         if (avpkt.size && avpkt.size != pkt->size) {
1782             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
1783                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1784             ist->showed_multi_packet_warning = 1;
1785         }
1786
1787         switch (ist->st->codec->codec_type) {
1788         case AVMEDIA_TYPE_AUDIO:
1789             ret = decode_audio    (ist, &avpkt, &got_output);
1790             break;
1791         case AVMEDIA_TYPE_VIDEO:
1792             ret = decode_video    (ist, &avpkt, &got_output);
1793             if (avpkt.duration) {
1794                 duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
1795             } else if(ist->st->codec->time_base.num != 0 && ist->st->codec->time_base.den != 0) {
1796                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1797                 duration = ((int64_t)AV_TIME_BASE *
1798                                 ist->st->codec->time_base.num * ticks) /
1799                                 ist->st->codec->time_base.den;
1800             } else
1801                 duration = 0;
1802
1803             if(ist->dts != AV_NOPTS_VALUE && duration) {
1804                 ist->next_dts += duration;
1805             }else
1806                 ist->next_dts = AV_NOPTS_VALUE;
1807
1808             if (got_output)
1809                 ist->next_pts += duration; //FIXME the duration is not correct in some cases
1810             break;
1811         case AVMEDIA_TYPE_SUBTITLE:
1812             ret = transcode_subtitles(ist, &avpkt, &got_output);
1813             break;
1814         default:
1815             return -1;
1816         }
1817
1818         if (ret < 0)
1819             return ret;
1820
1821         avpkt.dts=
1822         avpkt.pts= AV_NOPTS_VALUE;
1823
1824         // touch data and size only if not EOF
1825         if (pkt) {
1826             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
1827                 ret = avpkt.size;
1828             avpkt.data += ret;
1829             avpkt.size -= ret;
1830         }
1831         if (!got_output) {
1832             continue;
1833         }
1834     }
1835
1836     /* handle stream copy */
1837     if (!ist->decoding_needed) {
1838         rate_emu_sleep(ist);
1839         ist->dts = ist->next_dts;
1840         switch (ist->st->codec->codec_type) {
1841         case AVMEDIA_TYPE_AUDIO:
1842             ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1843                              ist->st->codec->sample_rate;
1844             break;
1845         case AVMEDIA_TYPE_VIDEO:
1846             if (pkt->duration) {
1847                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
1848             } else if(ist->st->codec->time_base.num != 0) {
1849                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
1850                 ist->next_dts += ((int64_t)AV_TIME_BASE *
1851                                   ist->st->codec->time_base.num * ticks) /
1852                                   ist->st->codec->time_base.den;
1853             }
1854             break;
1855         }
1856         ist->pts = ist->dts;
1857         ist->next_pts = ist->next_dts;
1858     }
1859     for (i = 0; pkt && i < nb_output_streams; i++) {
1860         OutputStream *ost = output_streams[i];
1861
1862         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
1863             continue;
1864
1865         do_streamcopy(ist, ost, pkt);
1866     }
1867
1868     return 0;
1869 }
1870
1871 static void print_sdp(void)
1872 {
1873     char sdp[16384];
1874     int i;
1875     AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
1876
1877     if (!avc)
1878         exit(1);
1879     for (i = 0; i < nb_output_files; i++)
1880         avc[i] = output_files[i]->ctx;
1881
1882     av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
1883     printf("SDP:\n%s\n", sdp);
1884     fflush(stdout);
1885     av_freep(&avc);
1886 }
1887
1888 static int init_input_stream(int ist_index, char *error, int error_len)
1889 {
1890     int ret;
1891     InputStream *ist = input_streams[ist_index];
1892
1893     if (ist->decoding_needed) {
1894         AVCodec *codec = ist->dec;
1895         if (!codec) {
1896             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
1897                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
1898             return AVERROR(EINVAL);
1899         }
1900
1901         ist->dr1 = (codec->capabilities & CODEC_CAP_DR1) && !do_deinterlace;
1902         if (codec->type == AVMEDIA_TYPE_VIDEO && ist->dr1) {
1903             ist->st->codec->get_buffer     = codec_get_buffer;
1904             ist->st->codec->release_buffer = codec_release_buffer;
1905             ist->st->codec->opaque         = &ist->buffer_pool;
1906         }
1907
1908         if (!av_dict_get(ist->opts, "threads", NULL, 0))
1909             av_dict_set(&ist->opts, "threads", "auto", 0);
1910         if ((ret = avcodec_open2(ist->st->codec, codec, &ist->opts)) < 0) {
1911             if (ret == AVERROR_EXPERIMENTAL)
1912                 abort_codec_experimental(codec, 0);
1913             snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
1914                     ist->file_index, ist->st->index);
1915             return ret;
1916         }
1917         assert_avoptions(ist->opts);
1918     }
1919
1920     ist->next_pts = AV_NOPTS_VALUE;
1921     ist->next_dts = AV_NOPTS_VALUE;
1922     ist->is_start = 1;
1923
1924     return 0;
1925 }
1926
1927 static InputStream *get_input_stream(OutputStream *ost)
1928 {
1929     if (ost->source_index >= 0)
1930         return input_streams[ost->source_index];
1931     return NULL;
1932 }
1933
1934 static int compare_int64(const void *a, const void *b)
1935 {
1936     int64_t va = *(int64_t *)a, vb = *(int64_t *)b;
1937     return va < vb ? -1 : va > vb ? +1 : 0;
1938 }
1939
1940 static void parse_forced_key_frames(char *kf, OutputStream *ost,
1941                                     AVCodecContext *avctx)
1942 {
1943     char *p;
1944     int n = 1, i, size, index = 0;
1945     int64_t t, *pts;
1946
1947     for (p = kf; *p; p++)
1948         if (*p == ',')
1949             n++;
1950     size = n;
1951     pts = av_malloc(sizeof(*pts) * size);
1952     if (!pts) {
1953         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
1954         exit(1);
1955     }
1956
1957     p = kf;
1958     for (i = 0; i < n; i++) {
1959         char *next = strchr(p, ',');
1960
1961         if (next)
1962             *next++ = 0;
1963
1964         if (!memcmp(p, "chapters", 8)) {
1965
1966             AVFormatContext *avf = output_files[ost->file_index]->ctx;
1967             int j;
1968
1969             if (avf->nb_chapters > INT_MAX - size ||
1970                 !(pts = av_realloc_f(pts, size += avf->nb_chapters - 1,
1971                                      sizeof(*pts)))) {
1972                 av_log(NULL, AV_LOG_FATAL,
1973                        "Could not allocate forced key frames array.\n");
1974                 exit(1);
1975             }
1976             t = p[8] ? parse_time_or_die("force_key_frames", p + 8, 1) : 0;
1977             t = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
1978
1979             for (j = 0; j < avf->nb_chapters; j++) {
1980                 AVChapter *c = avf->chapters[j];
1981                 av_assert1(index < size);
1982                 pts[index++] = av_rescale_q(c->start, c->time_base,
1983                                             avctx->time_base) + t;
1984             }
1985
1986         } else {
1987
1988             t = parse_time_or_die("force_key_frames", p, 1);
1989             av_assert1(index < size);
1990             pts[index++] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
1991
1992         }
1993
1994         p = next;
1995     }
1996
1997     av_assert0(index == size);
1998     qsort(pts, size, sizeof(*pts), compare_int64);
1999     ost->forced_kf_count = size;
2000     ost->forced_kf_pts   = pts;
2001 }
2002
2003 static void report_new_stream(int input_index, AVPacket *pkt)
2004 {
2005     InputFile *file = input_files[input_index];
2006     AVStream *st = file->ctx->streams[pkt->stream_index];
2007
2008     if (pkt->stream_index < file->nb_streams_warn)
2009         return;
2010     av_log(file->ctx, AV_LOG_WARNING,
2011            "New %s stream %d:%d at pos:%"PRId64" and DTS:%ss\n",
2012            av_get_media_type_string(st->codec->codec_type),
2013            input_index, pkt->stream_index,
2014            pkt->pos, av_ts2timestr(pkt->dts, &st->time_base));
2015     file->nb_streams_warn = pkt->stream_index + 1;
2016 }
2017
2018 static int transcode_init(void)
2019 {
2020     int ret = 0, i, j, k;
2021     AVFormatContext *oc;
2022     AVCodecContext *codec;
2023     OutputStream *ost;
2024     InputStream *ist;
2025     char error[1024];
2026     int want_sdp = 1;
2027
2028     /* init framerate emulation */
2029     for (i = 0; i < nb_input_files; i++) {
2030         InputFile *ifile = input_files[i];
2031         if (ifile->rate_emu)
2032             for (j = 0; j < ifile->nb_streams; j++)
2033                 input_streams[j + ifile->ist_index]->start = av_gettime();
2034     }
2035
2036     /* output stream init */
2037     for (i = 0; i < nb_output_files; i++) {
2038         oc = output_files[i]->ctx;
2039         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2040             av_dump_format(oc, i, oc->filename, 1);
2041             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2042             return AVERROR(EINVAL);
2043         }
2044     }
2045
2046     /* init complex filtergraphs */
2047     for (i = 0; i < nb_filtergraphs; i++)
2048         if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
2049             return ret;
2050
2051     /* for each output stream, we compute the right encoding parameters */
2052     for (i = 0; i < nb_output_streams; i++) {
2053         AVCodecContext *icodec = NULL;
2054         ost = output_streams[i];
2055         oc  = output_files[ost->file_index]->ctx;
2056         ist = get_input_stream(ost);
2057
2058         if (ost->attachment_filename)
2059             continue;
2060
2061         codec  = ost->st->codec;
2062
2063         if (ist) {
2064             icodec = ist->st->codec;
2065
2066             ost->st->disposition          = ist->st->disposition;
2067             codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
2068             codec->chroma_sample_location = icodec->chroma_sample_location;
2069         }
2070
2071         if (ost->stream_copy) {
2072             uint64_t extra_size;
2073
2074             av_assert0(ist && !ost->filter);
2075
2076             extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2077
2078             if (extra_size > INT_MAX) {
2079                 return AVERROR(EINVAL);
2080             }
2081
2082             /* if stream_copy is selected, no need to decode or encode */
2083             codec->codec_id   = icodec->codec_id;
2084             codec->codec_type = icodec->codec_type;
2085
2086             if (!codec->codec_tag) {
2087                 unsigned int codec_tag;
2088                 if (!oc->oformat->codec_tag ||
2089                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2090                      !av_codec_get_tag2(oc->oformat->codec_tag, icodec->codec_id, &codec_tag))
2091                     codec->codec_tag = icodec->codec_tag;
2092             }
2093
2094             codec->bit_rate       = icodec->bit_rate;
2095             codec->rc_max_rate    = icodec->rc_max_rate;
2096             codec->rc_buffer_size = icodec->rc_buffer_size;
2097             codec->field_order    = icodec->field_order;
2098             codec->extradata      = av_mallocz(extra_size);
2099             if (!codec->extradata) {
2100                 return AVERROR(ENOMEM);
2101             }
2102             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2103             codec->extradata_size= icodec->extradata_size;
2104             codec->bits_per_coded_sample  = icodec->bits_per_coded_sample;
2105
2106             codec->time_base = ist->st->time_base;
2107             /*
2108              * Avi is a special case here because it supports variable fps but
2109              * having the fps and timebase differe significantly adds quite some
2110              * overhead
2111              */
2112             if(!strcmp(oc->oformat->name, "avi")) {
2113                 if ( copy_tb<0 && av_q2d(ist->st->r_frame_rate) >= av_q2d(ist->st->avg_frame_rate)
2114                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(ist->st->time_base)
2115                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(icodec->time_base)
2116                                && av_q2d(ist->st->time_base) < 1.0/500 && av_q2d(icodec->time_base) < 1.0/500
2117                      || copy_tb==2){
2118                     codec->time_base.num = ist->st->r_frame_rate.den;
2119                     codec->time_base.den = 2*ist->st->r_frame_rate.num;
2120                     codec->ticks_per_frame = 2;
2121                 } else if (   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2122                                  && av_q2d(ist->st->time_base) < 1.0/500
2123                     || copy_tb==0){
2124                     codec->time_base = icodec->time_base;
2125                     codec->time_base.num *= icodec->ticks_per_frame;
2126                     codec->time_base.den *= 2;
2127                     codec->ticks_per_frame = 2;
2128                 }
2129             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2130                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2131                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2132                       && strcmp(oc->oformat->name, "f4v")
2133             ) {
2134                 if(   copy_tb<0 && icodec->time_base.den
2135                                 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
2136                                 && av_q2d(ist->st->time_base) < 1.0/500
2137                    || copy_tb==0){
2138                     codec->time_base = icodec->time_base;
2139                     codec->time_base.num *= icodec->ticks_per_frame;
2140                 }
2141             }
2142             if (   codec->codec_tag == AV_RL32("tmcd")
2143                 && icodec->time_base.num < icodec->time_base.den
2144                 && icodec->time_base.num > 0
2145                 && 121LL*icodec->time_base.num > icodec->time_base.den) {
2146                 codec->time_base = icodec->time_base;
2147             }
2148
2149             if(ost->frame_rate.num)
2150                 codec->time_base = av_inv_q(ost->frame_rate);
2151
2152             av_reduce(&codec->time_base.num, &codec->time_base.den,
2153                         codec->time_base.num, codec->time_base.den, INT_MAX);
2154
2155             switch (codec->codec_type) {
2156             case AVMEDIA_TYPE_AUDIO:
2157                 if (audio_volume != 256) {
2158                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2159                     exit(1);
2160                 }
2161                 codec->channel_layout     = icodec->channel_layout;
2162                 codec->sample_rate        = icodec->sample_rate;
2163                 codec->channels           = icodec->channels;
2164                 codec->frame_size         = icodec->frame_size;
2165                 codec->audio_service_type = icodec->audio_service_type;
2166                 codec->block_align        = icodec->block_align;
2167                 if((codec->block_align == 1 || codec->block_align == 1152) && codec->codec_id == AV_CODEC_ID_MP3)
2168                     codec->block_align= 0;
2169                 if(codec->codec_id == AV_CODEC_ID_AC3)
2170                     codec->block_align= 0;
2171                 break;
2172             case AVMEDIA_TYPE_VIDEO:
2173                 codec->pix_fmt            = icodec->pix_fmt;
2174                 codec->width              = icodec->width;
2175                 codec->height             = icodec->height;
2176                 codec->has_b_frames       = icodec->has_b_frames;
2177                 if (!codec->sample_aspect_ratio.num) {
2178                     codec->sample_aspect_ratio   =
2179                     ost->st->sample_aspect_ratio =
2180                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2181                         ist->st->codec->sample_aspect_ratio.num ?
2182                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2183                 }
2184                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2185                 break;
2186             case AVMEDIA_TYPE_SUBTITLE:
2187                 codec->width  = icodec->width;
2188                 codec->height = icodec->height;
2189                 break;
2190             case AVMEDIA_TYPE_DATA:
2191             case AVMEDIA_TYPE_ATTACHMENT:
2192                 break;
2193             default:
2194                 abort();
2195             }
2196         } else {
2197             if (!ost->enc)
2198                 ost->enc = avcodec_find_encoder(codec->codec_id);
2199             if (!ost->enc) {
2200                 /* should only happen when a default codec is not present. */
2201                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
2202                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2203                 ret = AVERROR(EINVAL);
2204                 goto dump_format;
2205             }
2206
2207             if (ist)
2208                 ist->decoding_needed++;
2209             ost->encoding_needed = 1;
2210
2211             if (!ost->filter &&
2212                 (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2213                  codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
2214                     FilterGraph *fg;
2215                     fg = init_simple_filtergraph(ist, ost);
2216                     if (configure_filtergraph(fg)) {
2217                         av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2218                         exit(1);
2219                     }
2220             }
2221
2222             if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2223                 if (ost->filter && !ost->frame_rate.num)
2224                     ost->frame_rate = av_buffersink_get_frame_rate(ost->filter->filter);
2225                 if (ist && !ost->frame_rate.num)
2226                     ost->frame_rate = ist->framerate;
2227                 if (ist && !ost->frame_rate.num)
2228                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25, 1};
2229 //                    ost->frame_rate = ist->st->avg_frame_rate.num ? ist->st->avg_frame_rate : (AVRational){25, 1};
2230                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2231                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2232                     ost->frame_rate = ost->enc->supported_framerates[idx];
2233                 }
2234             }
2235
2236             switch (codec->codec_type) {
2237             case AVMEDIA_TYPE_AUDIO:
2238                 codec->sample_fmt     = ost->filter->filter->inputs[0]->format;
2239                 codec->sample_rate    = ost->filter->filter->inputs[0]->sample_rate;
2240                 codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
2241                 codec->channels       = av_get_channel_layout_nb_channels(codec->channel_layout);
2242                 codec->time_base      = (AVRational){ 1, codec->sample_rate };
2243                 break;
2244             case AVMEDIA_TYPE_VIDEO:
2245                 codec->time_base = av_inv_q(ost->frame_rate);
2246                 if (ost->filter && !(codec->time_base.num && codec->time_base.den))
2247                     codec->time_base = ost->filter->filter->inputs[0]->time_base;
2248                 if (   av_q2d(codec->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
2249                    && (video_sync_method == VSYNC_CFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
2250                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
2251                                                "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
2252                 }
2253                 for (j = 0; j < ost->forced_kf_count; j++)
2254                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2255                                                          AV_TIME_BASE_Q,
2256                                                          codec->time_base);
2257
2258                 codec->width  = ost->filter->filter->inputs[0]->w;
2259                 codec->height = ost->filter->filter->inputs[0]->h;
2260                 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
2261                     ost->frame_aspect_ratio ? // overridden by the -aspect cli option
2262                     av_d2q(ost->frame_aspect_ratio * codec->height/codec->width, 255) :
2263                     ost->filter->filter->inputs[0]->sample_aspect_ratio;
2264                 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
2265
2266                 if (!icodec ||
2267                     codec->width   != icodec->width  ||
2268                     codec->height  != icodec->height ||
2269                     codec->pix_fmt != icodec->pix_fmt) {
2270                     codec->bits_per_raw_sample = frame_bits_per_raw_sample;
2271                 }
2272
2273                 if (ost->forced_keyframes)
2274                     parse_forced_key_frames(ost->forced_keyframes, ost,
2275                                             ost->st->codec);
2276                 break;
2277             case AVMEDIA_TYPE_SUBTITLE:
2278                 codec->time_base = (AVRational){1, 1000};
2279                 if (!codec->width) {
2280                     codec->width     = input_streams[ost->source_index]->st->codec->width;
2281                     codec->height    = input_streams[ost->source_index]->st->codec->height;
2282                 }
2283                 break;
2284             default:
2285                 abort();
2286                 break;
2287             }
2288             /* two pass mode */
2289             if (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
2290                 char logfilename[1024];
2291                 FILE *f;
2292
2293                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2294                          ost->logfile_prefix ? ost->logfile_prefix :
2295                                                DEFAULT_PASS_LOGFILENAME_PREFIX,
2296                          i);
2297                 if (!strcmp(ost->enc->name, "libx264")) {
2298                     av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
2299                 } else {
2300                     if (codec->flags & CODEC_FLAG_PASS2) {
2301                         char  *logbuffer;
2302                         size_t logbuffer_size;
2303                         if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2304                             av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2305                                    logfilename);
2306                             exit(1);
2307                         }
2308                         codec->stats_in = logbuffer;
2309                     }
2310                     if (codec->flags & CODEC_FLAG_PASS1) {
2311                         f = fopen(logfilename, "wb");
2312                         if (!f) {
2313                             av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2314                                 logfilename, strerror(errno));
2315                             exit(1);
2316                         }
2317                         ost->logfile = f;
2318                     }
2319                 }
2320             }
2321         }
2322     }
2323
2324     /* open each encoder */
2325     for (i = 0; i < nb_output_streams; i++) {
2326         ost = output_streams[i];
2327         if (ost->encoding_needed) {
2328             AVCodec      *codec = ost->enc;
2329             AVCodecContext *dec = NULL;
2330
2331             if ((ist = get_input_stream(ost)))
2332                 dec = ist->st->codec;
2333             if (dec && dec->subtitle_header) {
2334                 /* ASS code assumes this buffer is null terminated so add extra byte. */
2335                 ost->st->codec->subtitle_header = av_mallocz(dec->subtitle_header_size + 1);
2336                 if (!ost->st->codec->subtitle_header) {
2337                     ret = AVERROR(ENOMEM);
2338                     goto dump_format;
2339                 }
2340                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2341                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2342             }
2343             if (!av_dict_get(ost->opts, "threads", NULL, 0))
2344                 av_dict_set(&ost->opts, "threads", "auto", 0);
2345             if ((ret = avcodec_open2(ost->st->codec, codec, &ost->opts)) < 0) {
2346                 if (ret == AVERROR_EXPERIMENTAL)
2347                     abort_codec_experimental(codec, 1);
2348                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2349                         ost->file_index, ost->index);
2350                 goto dump_format;
2351             }
2352             if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
2353                 !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
2354                 av_buffersink_set_frame_size(ost->filter->filter,
2355                                              ost->st->codec->frame_size);
2356             assert_avoptions(ost->opts);
2357             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2358                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2359                                              " It takes bits/s as argument, not kbits/s\n");
2360             extra_size += ost->st->codec->extradata_size;
2361
2362             if (ost->st->codec->me_threshold)
2363                 input_streams[ost->source_index]->st->codec->debug |= FF_DEBUG_MV;
2364         }
2365     }
2366
2367     /* init input streams */
2368     for (i = 0; i < nb_input_streams; i++)
2369         if ((ret = init_input_stream(i, error, sizeof(error))) < 0)
2370             goto dump_format;
2371
2372     /* discard unused programs */
2373     for (i = 0; i < nb_input_files; i++) {
2374         InputFile *ifile = input_files[i];
2375         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2376             AVProgram *p = ifile->ctx->programs[j];
2377             int discard  = AVDISCARD_ALL;
2378
2379             for (k = 0; k < p->nb_stream_indexes; k++)
2380                 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
2381                     discard = AVDISCARD_DEFAULT;
2382                     break;
2383                 }
2384             p->discard = discard;
2385         }
2386     }
2387
2388     /* open files and write file headers */
2389     for (i = 0; i < nb_output_files; i++) {
2390         oc = output_files[i]->ctx;
2391         oc->interrupt_callback = int_cb;
2392         if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
2393             char errbuf[128];
2394             const char *errbuf_ptr = errbuf;
2395             if (av_strerror(ret, errbuf, sizeof(errbuf)) < 0)
2396                 errbuf_ptr = strerror(AVUNERROR(ret));
2397             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?): %s", i, errbuf_ptr);
2398             ret = AVERROR(EINVAL);
2399             goto dump_format;
2400         }
2401 //         assert_avoptions(output_files[i]->opts);
2402         if (strcmp(oc->oformat->name, "rtp")) {
2403             want_sdp = 0;
2404         }
2405     }
2406
2407  dump_format:
2408     /* dump the file output parameters - cannot be done before in case
2409        of stream copy */
2410     for (i = 0; i < nb_output_files; i++) {
2411         av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
2412     }
2413
2414     /* dump the stream mapping */
2415     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2416     for (i = 0; i < nb_input_streams; i++) {
2417         ist = input_streams[i];
2418
2419         for (j = 0; j < ist->nb_filters; j++) {
2420             if (ist->filters[j]->graph->graph_desc) {
2421                 av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
2422                        ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
2423                        ist->filters[j]->name);
2424                 if (nb_filtergraphs > 1)
2425                     av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
2426                 av_log(NULL, AV_LOG_INFO, "\n");
2427             }
2428         }
2429     }
2430
2431     for (i = 0; i < nb_output_streams; i++) {
2432         ost = output_streams[i];
2433
2434         if (ost->attachment_filename) {
2435             /* an attached file */
2436             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
2437                    ost->attachment_filename, ost->file_index, ost->index);
2438             continue;
2439         }
2440
2441         if (ost->filter && ost->filter->graph->graph_desc) {
2442             /* output from a complex graph */
2443             av_log(NULL, AV_LOG_INFO, "  %s", ost->filter->name);
2444             if (nb_filtergraphs > 1)
2445                 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
2446
2447             av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
2448                    ost->index, ost->enc ? ost->enc->name : "?");
2449             continue;
2450         }
2451
2452         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
2453                input_streams[ost->source_index]->file_index,
2454                input_streams[ost->source_index]->st->index,
2455                ost->file_index,
2456                ost->index);
2457         if (ost->sync_ist != input_streams[ost->source_index])
2458             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2459                    ost->sync_ist->file_index,
2460                    ost->sync_ist->st->index);
2461         if (ost->stream_copy)
2462             av_log(NULL, AV_LOG_INFO, " (copy)");
2463         else
2464             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
2465                    input_streams[ost->source_index]->dec->name : "?",
2466                    ost->enc ? ost->enc->name : "?");
2467         av_log(NULL, AV_LOG_INFO, "\n");
2468     }
2469
2470     if (ret) {
2471         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2472         return ret;
2473     }
2474
2475     if (want_sdp) {
2476         print_sdp();
2477     }
2478
2479     return 0;
2480 }
2481
2482 /* Return 1 if there remain streams where more output is wanted, 0 otherwise. */
2483 static int need_output(void)
2484 {
2485     int i;
2486
2487     for (i = 0; i < nb_output_streams; i++) {
2488         OutputStream *ost    = output_streams[i];
2489         OutputFile *of       = output_files[ost->file_index];
2490         AVFormatContext *os  = output_files[ost->file_index]->ctx;
2491
2492         if (ost->finished ||
2493             (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2494             continue;
2495         if (ost->frame_number >= ost->max_frames) {
2496             int j;
2497             for (j = 0; j < of->ctx->nb_streams; j++)
2498                 close_output_stream(output_streams[of->ost_index + j]);
2499             continue;
2500         }
2501
2502         return 1;
2503     }
2504
2505     return 0;
2506 }
2507
2508 /**
2509  * Select the output stream to process.
2510  *
2511  * @return  selected output stream, or NULL if none available
2512  */
2513 static OutputStream *choose_output(void)
2514 {
2515     int i;
2516     int64_t opts_min = INT64_MAX;
2517     OutputStream *ost_min = NULL;
2518
2519     for (i = 0; i < nb_output_streams; i++) {
2520         OutputStream *ost = output_streams[i];
2521         int64_t opts = av_rescale_q(ost->st->cur_dts, ost->st->time_base,
2522                                     AV_TIME_BASE_Q);
2523         if (!ost->unavailable && !ost->finished && opts < opts_min) {
2524             opts_min = opts;
2525             ost_min  = ost;
2526         }
2527     }
2528     return ost_min;
2529 }
2530
2531 static int check_keyboard_interaction(int64_t cur_time)
2532 {
2533     int i, ret, key;
2534     static int64_t last_time;
2535     if (received_nb_signals)
2536         return AVERROR_EXIT;
2537     /* read_key() returns 0 on EOF */
2538     if(cur_time - last_time >= 100000 && !run_as_daemon){
2539         key =  read_key();
2540         last_time = cur_time;
2541     }else
2542         key = -1;
2543     if (key == 'q')
2544         return AVERROR_EXIT;
2545     if (key == '+') av_log_set_level(av_log_get_level()+10);
2546     if (key == '-') av_log_set_level(av_log_get_level()-10);
2547     if (key == 's') qp_hist     ^= 1;
2548     if (key == 'h'){
2549         if (do_hex_dump){
2550             do_hex_dump = do_pkt_dump = 0;
2551         } else if(do_pkt_dump){
2552             do_hex_dump = 1;
2553         } else
2554             do_pkt_dump = 1;
2555         av_log_set_level(AV_LOG_DEBUG);
2556     }
2557     if (key == 'c' || key == 'C'){
2558         char buf[4096], target[64], command[256], arg[256] = {0};
2559         double time;
2560         int k, n = 0;
2561         fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
2562         i = 0;
2563         while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
2564             if (k > 0)
2565                 buf[i++] = k;
2566         buf[i] = 0;
2567         if (k > 0 &&
2568             (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
2569             av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
2570                    target, time, command, arg);
2571             for (i = 0; i < nb_filtergraphs; i++) {
2572                 FilterGraph *fg = filtergraphs[i];
2573                 if (fg->graph) {
2574                     if (time < 0) {
2575                         ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
2576                                                           key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
2577                         fprintf(stderr, "Command reply for stream %d: ret:%d res:%s\n", i, ret, buf);
2578                     } else {
2579                         ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
2580                     }
2581                 }
2582             }
2583         } else {
2584             av_log(NULL, AV_LOG_ERROR,
2585                    "Parse error, at least 3 arguments were expected, "
2586                    "only %d given in string '%s'\n", n, buf);
2587         }
2588     }
2589     if (key == 'd' || key == 'D'){
2590         int debug=0;
2591         if(key == 'D') {
2592             debug = input_streams[0]->st->codec->debug<<1;
2593             if(!debug) debug = 1;
2594             while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2595                 debug += debug;
2596         }else
2597             if(scanf("%d", &debug)!=1)
2598                 fprintf(stderr,"error parsing debug value\n");
2599         for(i=0;i<nb_input_streams;i++) {
2600             input_streams[i]->st->codec->debug = debug;
2601         }
2602         for(i=0;i<nb_output_streams;i++) {
2603             OutputStream *ost = output_streams[i];
2604             ost->st->codec->debug = debug;
2605         }
2606         if(debug) av_log_set_level(AV_LOG_DEBUG);
2607         fprintf(stderr,"debug=%d\n", debug);
2608     }
2609     if (key == '?'){
2610         fprintf(stderr, "key    function\n"
2611                         "?      show this help\n"
2612                         "+      increase verbosity\n"
2613                         "-      decrease verbosity\n"
2614                         "c      Send command to filtergraph\n"
2615                         "D      cycle through available debug modes\n"
2616                         "h      dump packets/hex press to cycle through the 3 states\n"
2617                         "q      quit\n"
2618                         "s      Show QP histogram\n"
2619         );
2620     }
2621     return 0;
2622 }
2623
2624 #if HAVE_PTHREADS
2625 static void *input_thread(void *arg)
2626 {
2627     InputFile *f = arg;
2628     int ret = 0;
2629
2630     while (!transcoding_finished && ret >= 0) {
2631         AVPacket pkt;
2632         ret = av_read_frame(f->ctx, &pkt);
2633
2634         if (ret == AVERROR(EAGAIN)) {
2635             av_usleep(10000);
2636             ret = 0;
2637             continue;
2638         } else if (ret < 0)
2639             break;
2640
2641         pthread_mutex_lock(&f->fifo_lock);
2642         while (!av_fifo_space(f->fifo))
2643             pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
2644
2645         av_dup_packet(&pkt);
2646         av_fifo_generic_write(f->fifo, &pkt, sizeof(pkt), NULL);
2647
2648         pthread_mutex_unlock(&f->fifo_lock);
2649     }
2650
2651     f->finished = 1;
2652     return NULL;
2653 }
2654
2655 static void free_input_threads(void)
2656 {
2657     int i;
2658
2659     if (nb_input_files == 1)
2660         return;
2661
2662     transcoding_finished = 1;
2663
2664     for (i = 0; i < nb_input_files; i++) {
2665         InputFile *f = input_files[i];
2666         AVPacket pkt;
2667
2668         if (!f->fifo || f->joined)
2669             continue;
2670
2671         pthread_mutex_lock(&f->fifo_lock);
2672         while (av_fifo_size(f->fifo)) {
2673             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2674             av_free_packet(&pkt);
2675         }
2676         pthread_cond_signal(&f->fifo_cond);
2677         pthread_mutex_unlock(&f->fifo_lock);
2678
2679         pthread_join(f->thread, NULL);
2680         f->joined = 1;
2681
2682         while (av_fifo_size(f->fifo)) {
2683             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2684             av_free_packet(&pkt);
2685         }
2686         av_fifo_free(f->fifo);
2687     }
2688 }
2689
2690 static int init_input_threads(void)
2691 {
2692     int i, ret;
2693
2694     if (nb_input_files == 1)
2695         return 0;
2696
2697     for (i = 0; i < nb_input_files; i++) {
2698         InputFile *f = input_files[i];
2699
2700         if (!(f->fifo = av_fifo_alloc(8*sizeof(AVPacket))))
2701             return AVERROR(ENOMEM);
2702
2703         pthread_mutex_init(&f->fifo_lock, NULL);
2704         pthread_cond_init (&f->fifo_cond, NULL);
2705
2706         if ((ret = pthread_create(&f->thread, NULL, input_thread, f)))
2707             return AVERROR(ret);
2708     }
2709     return 0;
2710 }
2711
2712 static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
2713 {
2714     int ret = 0;
2715
2716     pthread_mutex_lock(&f->fifo_lock);
2717
2718     if (av_fifo_size(f->fifo)) {
2719         av_fifo_generic_read(f->fifo, pkt, sizeof(*pkt), NULL);
2720         pthread_cond_signal(&f->fifo_cond);
2721     } else {
2722         if (f->finished)
2723             ret = AVERROR_EOF;
2724         else
2725             ret = AVERROR(EAGAIN);
2726     }
2727
2728     pthread_mutex_unlock(&f->fifo_lock);
2729
2730     return ret;
2731 }
2732 #endif
2733
2734 static int get_input_packet(InputFile *f, AVPacket *pkt)
2735 {
2736 #if HAVE_PTHREADS
2737     if (nb_input_files > 1)
2738         return get_input_packet_mt(f, pkt);
2739 #endif
2740     return av_read_frame(f->ctx, pkt);
2741 }
2742
2743 static int got_eagain(void)
2744 {
2745     int i;
2746     for (i = 0; i < nb_output_streams; i++)
2747         if (output_streams[i]->unavailable)
2748             return 1;
2749     return 0;
2750 }
2751
2752 static void reset_eagain(void)
2753 {
2754     int i;
2755     for (i = 0; i < nb_input_files; i++)
2756         input_files[i]->eagain = 0;
2757     for (i = 0; i < nb_output_streams; i++)
2758         output_streams[i]->unavailable = 0;
2759 }
2760
2761 /*
2762  * Return
2763  * - 0 -- one packet was read and processed
2764  * - AVERROR(EAGAIN) -- no packets were available for selected file,
2765  *   this function should be called again
2766  * - AVERROR_EOF -- this function should not be called again
2767  */
2768 static int process_input(int file_index)
2769 {
2770     InputFile *ifile = input_files[file_index];
2771     AVFormatContext *is;
2772     InputStream *ist;
2773     AVPacket pkt;
2774     int ret, i, j;
2775
2776     is  = ifile->ctx;
2777     ret = get_input_packet(ifile, &pkt);
2778
2779     if (ret == AVERROR(EAGAIN)) {
2780         ifile->eagain = 1;
2781         return ret;
2782     }
2783     if (ret < 0) {
2784         if (ret != AVERROR_EOF) {
2785             print_error(is->filename, ret);
2786             if (exit_on_error)
2787                 exit(1);
2788         }
2789         ifile->eof_reached = 1;
2790
2791         for (i = 0; i < ifile->nb_streams; i++) {
2792             ist = input_streams[ifile->ist_index + i];
2793             if (ist->decoding_needed)
2794                 output_packet(ist, NULL);
2795
2796             /* mark all outputs that don't go through lavfi as finished */
2797             for (j = 0; j < nb_output_streams; j++) {
2798                 OutputStream *ost = output_streams[j];
2799
2800                 if (ost->source_index == ifile->ist_index + i &&
2801                     (ost->stream_copy || ost->enc->type == AVMEDIA_TYPE_SUBTITLE))
2802                     close_output_stream(ost);
2803             }
2804         }
2805
2806         return AVERROR(EAGAIN);
2807     }
2808
2809     reset_eagain();
2810
2811     if (do_pkt_dump) {
2812         av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2813                          is->streams[pkt.stream_index]);
2814     }
2815     /* the following test is needed in case new streams appear
2816        dynamically in stream : we ignore them */
2817     if (pkt.stream_index >= ifile->nb_streams) {
2818         report_new_stream(file_index, &pkt);
2819         goto discard_packet;
2820     }
2821
2822     ist = input_streams[ifile->ist_index + pkt.stream_index];
2823     if (ist->discard)
2824         goto discard_packet;
2825
2826     if (debug_ts) {
2827         av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
2828                "next_dts:%s next_dts_time:%s next_pts:%s next_pts_time:%s pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s off:%s off_time:%s\n",
2829                ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
2830                av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &AV_TIME_BASE_Q),
2831                av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &AV_TIME_BASE_Q),
2832                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
2833                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
2834                av_ts2str(input_files[ist->file_index]->ts_offset),
2835                av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
2836     }
2837
2838     if(!ist->wrap_correction_done && is->start_time != AV_NOPTS_VALUE && ist->st->pts_wrap_bits < 64){
2839         int64_t stime, stime2;
2840         // Correcting starttime based on the enabled streams
2841         // FIXME this ideally should be done before the first use of starttime but we do not know which are the enabled streams at that point.
2842         //       so we instead do it here as part of discontinuity handling
2843         if (   ist->next_dts == AV_NOPTS_VALUE
2844             && ifile->ts_offset == -is->start_time
2845             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2846             int64_t new_start_time = INT64_MAX;
2847             for (i=0; i<is->nb_streams; i++) {
2848                 AVStream *st = is->streams[i];
2849                 if(st->discard == AVDISCARD_ALL || st->start_time == AV_NOPTS_VALUE)
2850                     continue;
2851                 new_start_time = FFMIN(new_start_time, av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q));
2852             }
2853             if (new_start_time > is->start_time) {
2854                 av_log(is, AV_LOG_VERBOSE, "Correcting start time by %"PRId64"\n", new_start_time - is->start_time);
2855                 ifile->ts_offset = -new_start_time;
2856             }
2857         }
2858
2859         stime = av_rescale_q(is->start_time, AV_TIME_BASE_Q, ist->st->time_base);
2860         stime2= stime + (1ULL<<ist->st->pts_wrap_bits);
2861         ist->wrap_correction_done = 1;
2862
2863         if(stime2 > stime && pkt.dts != AV_NOPTS_VALUE && pkt.dts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
2864             pkt.dts -= 1ULL<<ist->st->pts_wrap_bits;
2865             ist->wrap_correction_done = 0;
2866         }
2867         if(stime2 > stime && pkt.pts != AV_NOPTS_VALUE && pkt.pts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
2868             pkt.pts -= 1ULL<<ist->st->pts_wrap_bits;
2869             ist->wrap_correction_done = 0;
2870         }
2871     }
2872
2873     if (pkt.dts != AV_NOPTS_VALUE)
2874         pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2875     if (pkt.pts != AV_NOPTS_VALUE)
2876         pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2877
2878     if (pkt.pts != AV_NOPTS_VALUE)
2879         pkt.pts *= ist->ts_scale;
2880     if (pkt.dts != AV_NOPTS_VALUE)
2881         pkt.dts *= ist->ts_scale;
2882
2883     if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE &&
2884         !copy_ts) {
2885         int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2886         int64_t delta   = pkt_dts - ist->next_dts;
2887         if (is->iformat->flags & AVFMT_TS_DISCONT) {
2888         if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
2889             (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
2890                 ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
2891             pkt_dts+1<ist->pts){
2892             ifile->ts_offset -= delta;
2893             av_log(NULL, AV_LOG_DEBUG,
2894                    "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2895                    delta, ifile->ts_offset);
2896             pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2897             if (pkt.pts != AV_NOPTS_VALUE)
2898                 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2899         }
2900         } else {
2901             if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
2902                 (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
2903                ) {
2904                 av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
2905                 pkt.dts = AV_NOPTS_VALUE;
2906             }
2907             if (pkt.pts != AV_NOPTS_VALUE){
2908                 int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
2909                 delta   = pkt_pts - ist->next_dts;
2910                 if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
2911                     (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
2912                    ) {
2913                     av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
2914                     pkt.pts = AV_NOPTS_VALUE;
2915                 }
2916             }
2917         }
2918     }
2919
2920     if (debug_ts) {
2921         av_log(NULL, AV_LOG_INFO, "demuxer+ffmpeg -> ist_index:%d type:%s pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s off:%s off_time:%s\n",
2922                ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
2923                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
2924                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
2925                av_ts2str(input_files[ist->file_index]->ts_offset),
2926                av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
2927     }
2928
2929     sub2video_heartbeat(ist, pkt.pts);
2930
2931     ret = output_packet(ist, &pkt);
2932     if (ret < 0) {
2933         char buf[128];
2934         av_strerror(ret, buf, sizeof(buf));
2935         av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d: %s\n",
2936                 ist->file_index, ist->st->index, buf);
2937         if (exit_on_error)
2938             exit(1);
2939     }
2940
2941 discard_packet:
2942     av_free_packet(&pkt);
2943
2944     return 0;
2945 }
2946
2947 /**
2948  * Perform a step of transcoding for the specified filter graph.
2949  *
2950  * @param[in]  graph     filter graph to consider
2951  * @param[out] best_ist  input stream where a frame would allow to continue
2952  * @return  0 for success, <0 for error
2953  */
2954 static int transcode_from_filter(FilterGraph *graph, InputStream **best_ist)
2955 {
2956     int i, ret;
2957     int nb_requests, nb_requests_max = 0;
2958     InputFilter *ifilter;
2959     InputStream *ist;
2960
2961     *best_ist = NULL;
2962     ret = avfilter_graph_request_oldest(graph->graph);
2963     if (ret >= 0)
2964         return reap_filters();
2965
2966     if (ret == AVERROR_EOF) {
2967         ret = reap_filters();
2968         for (i = 0; i < graph->nb_outputs; i++)
2969             close_output_stream(graph->outputs[i]->ost);
2970         return ret;
2971     }
2972     if (ret != AVERROR(EAGAIN))
2973         return ret;
2974
2975     for (i = 0; i < graph->nb_inputs; i++) {
2976         ifilter = graph->inputs[i];
2977         ist = ifilter->ist;
2978         if (input_files[ist->file_index]->eagain ||
2979             input_files[ist->file_index]->eof_reached)
2980             continue;
2981         nb_requests = av_buffersrc_get_nb_failed_requests(ifilter->filter);
2982         if (nb_requests > nb_requests_max) {
2983             nb_requests_max = nb_requests;
2984             *best_ist = ist;
2985         }
2986     }
2987
2988     if (!*best_ist)
2989         for (i = 0; i < graph->nb_outputs; i++)
2990             graph->outputs[i]->ost->unavailable = 1;
2991
2992     return 0;
2993 }
2994
2995 /**
2996  * Run a single step of transcoding.
2997  *
2998  * @return  0 for success, <0 for error
2999  */
3000 static int transcode_step(void)
3001 {
3002     OutputStream *ost;
3003     InputStream  *ist;
3004     int ret;
3005
3006     ost = choose_output();
3007     if (!ost) {
3008         if (got_eagain()) {
3009             reset_eagain();
3010             av_usleep(10000);
3011             return 0;
3012         }
3013         av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from, finishing.\n");
3014         return AVERROR_EOF;
3015     }
3016
3017     if (ost->filter) {
3018         if ((ret = transcode_from_filter(ost->filter->graph, &ist)) < 0)
3019             return ret;
3020         if (!ist)
3021             return 0;
3022     } else {
3023         av_assert0(ost->source_index >= 0);
3024         ist = input_streams[ost->source_index];
3025     }
3026
3027     ret = process_input(ist->file_index);
3028     if (ret == AVERROR(EAGAIN)) {
3029         if (input_files[ist->file_index]->eagain)
3030             ost->unavailable = 1;
3031         return 0;
3032     }
3033     if (ret < 0)
3034         return ret == AVERROR_EOF ? 0 : ret;
3035
3036     return reap_filters();
3037 }
3038
3039 /*
3040  * The following code is the main loop of the file converter
3041  */
3042 static int transcode(void)
3043 {
3044     int ret, i;
3045     AVFormatContext *os;
3046     OutputStream *ost;
3047     InputStream *ist;
3048     int64_t timer_start;
3049
3050     ret = transcode_init();
3051     if (ret < 0)
3052         goto fail;
3053
3054     if (stdin_interaction) {
3055         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
3056     }
3057
3058     timer_start = av_gettime();
3059
3060 #if HAVE_PTHREADS
3061     if ((ret = init_input_threads()) < 0)
3062         goto fail;
3063 #endif
3064
3065     while (!received_sigterm) {
3066         int64_t cur_time= av_gettime();
3067
3068         /* if 'q' pressed, exits */
3069         if (stdin_interaction)
3070             if (check_keyboard_interaction(cur_time) < 0)
3071                 break;
3072
3073         /* check if there's any stream where output is still needed */
3074         if (!need_output()) {
3075             av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
3076             break;
3077         }
3078
3079         ret = transcode_step();
3080         if (ret < 0) {
3081             if (ret == AVERROR_EOF || ret == AVERROR(EAGAIN))
3082                 continue;
3083
3084             av_log(NULL, AV_LOG_ERROR, "Error while filtering.\n");
3085             break;
3086         }
3087
3088         /* dump report by using the output first video and audio streams */
3089         print_report(0, timer_start, cur_time);
3090     }
3091 #if HAVE_PTHREADS
3092     free_input_threads();
3093 #endif
3094
3095     /* at the end of stream, we must flush the decoder buffers */
3096     for (i = 0; i < nb_input_streams; i++) {
3097         ist = input_streams[i];
3098         if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
3099             output_packet(ist, NULL);
3100         }
3101     }
3102     flush_encoders();
3103
3104     term_exit();
3105
3106     /* write the trailer if needed and close file */
3107     for (i = 0; i < nb_output_files; i++) {
3108         os = output_files[i]->ctx;
3109         av_write_trailer(os);
3110     }
3111
3112     /* dump report by using the first video and audio streams */
3113     print_report(1, timer_start, av_gettime());
3114
3115     /* close each encoder */
3116     for (i = 0; i < nb_output_streams; i++) {
3117         ost = output_streams[i];
3118         if (ost->encoding_needed) {
3119             av_freep(&ost->st->codec->stats_in);
3120             avcodec_close(ost->st->codec);
3121         }
3122     }
3123
3124     /* close each decoder */
3125     for (i = 0; i < nb_input_streams; i++) {
3126         ist = input_streams[i];
3127         if (ist->decoding_needed) {
3128             avcodec_close(ist->st->codec);
3129         }
3130     }
3131
3132     /* finished ! */
3133     ret = 0;
3134
3135  fail:
3136 #if HAVE_PTHREADS
3137     free_input_threads();
3138 #endif
3139
3140     if (output_streams) {
3141         for (i = 0; i < nb_output_streams; i++) {
3142             ost = output_streams[i];
3143             if (ost) {
3144                 if (ost->stream_copy)
3145                     av_freep(&ost->st->codec->extradata);
3146                 if (ost->logfile) {
3147                     fclose(ost->logfile);
3148                     ost->logfile = NULL;
3149                 }
3150                 av_freep(&ost->st->codec->subtitle_header);
3151                 av_free(ost->forced_kf_pts);
3152                 av_dict_free(&ost->opts);
3153             }
3154         }
3155     }
3156     return ret;
3157 }
3158
3159
3160 static int64_t getutime(void)
3161 {
3162 #if HAVE_GETRUSAGE
3163     struct rusage rusage;
3164
3165     getrusage(RUSAGE_SELF, &rusage);
3166     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
3167 #elif HAVE_GETPROCESSTIMES
3168     HANDLE proc;
3169     FILETIME c, e, k, u;
3170     proc = GetCurrentProcess();
3171     GetProcessTimes(proc, &c, &e, &k, &u);
3172     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
3173 #else
3174     return av_gettime();
3175 #endif
3176 }
3177
3178 static int64_t getmaxrss(void)
3179 {
3180 #if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
3181     struct rusage rusage;
3182     getrusage(RUSAGE_SELF, &rusage);
3183     return (int64_t)rusage.ru_maxrss * 1024;
3184 #elif HAVE_GETPROCESSMEMORYINFO
3185     HANDLE proc;
3186     PROCESS_MEMORY_COUNTERS memcounters;
3187     proc = GetCurrentProcess();
3188     memcounters.cb = sizeof(memcounters);
3189     GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
3190     return memcounters.PeakPagefileUsage;
3191 #else
3192     return 0;
3193 #endif
3194 }
3195
3196 static void log_callback_null(void *ptr, int level, const char *fmt, va_list vl)
3197 {
3198 }
3199
3200 int main(int argc, char **argv)
3201 {
3202     int ret;
3203     int64_t ti;
3204
3205     atexit(exit_program);
3206
3207     setvbuf(stderr,NULL,_IONBF,0); /* win32 runtime needs this */
3208
3209     av_log_set_flags(AV_LOG_SKIP_REPEATED);
3210     parse_loglevel(argc, argv, options);
3211
3212     if(argc>1 && !strcmp(argv[1], "-d")){
3213         run_as_daemon=1;
3214         av_log_set_callback(log_callback_null);
3215         argc--;
3216         argv++;
3217     }
3218
3219     avcodec_register_all();
3220 #if CONFIG_AVDEVICE
3221     avdevice_register_all();
3222 #endif
3223     avfilter_register_all();
3224     av_register_all();
3225     avformat_network_init();
3226
3227     show_banner(argc, argv, options);
3228
3229     term_init();
3230
3231     /* parse options and open all input/output files */
3232     ret = ffmpeg_parse_options(argc, argv);
3233     if (ret < 0)
3234         exit(1);
3235
3236     if (nb_output_files <= 0 && nb_input_files == 0) {
3237         show_usage();
3238         av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
3239         exit(1);
3240     }
3241
3242     /* file converter / grab */
3243     if (nb_output_files <= 0) {
3244         av_log(NULL, AV_LOG_FATAL, "At least one output file must be specified\n");
3245         exit(1);
3246     }
3247
3248 //     if (nb_input_files == 0) {
3249 //         av_log(NULL, AV_LOG_FATAL, "At least one input file must be specified\n");
3250 //         exit(1);
3251 //     }
3252
3253     current_time = ti = getutime();
3254     if (transcode() < 0)
3255         exit(1);
3256     ti = getutime() - ti;
3257     if (do_benchmark) {
3258         int maxrss = getmaxrss() / 1024;
3259         printf("bench: utime=%0.3fs maxrss=%ikB\n", ti / 1000000.0, maxrss);
3260     }
3261
3262     exit(0);
3263     return 0;
3264 }