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 #include <stdint.h>
  34
  35 #if HAVE_ISATTY
  36 #if HAVE_IO_H
  37 #include <io.h>
  38 #endif
  39 #if HAVE_UNISTD_H
  40 #include <unistd.h>
  41 #endif
  42 #endif
  43
  44 #include "libavformat/avformat.h"
  45 #include "libavdevice/avdevice.h"
  46 #include "libswresample/swresample.h"
  47 #include "libavutil/opt.h"
  48 #include "libavutil/channel_layout.h"
  49 #include "libavutil/parseutils.h"
  50 #include "libavutil/samplefmt.h"
  51 #include "libavutil/fifo.h"
  52 #include "libavutil/intreadwrite.h"
  53 #include "libavutil/dict.h"
  54 #include "libavutil/mathematics.h"
  55 #include "libavutil/pixdesc.h"
  56 #include "libavutil/avstring.h"
  57 #include "libavutil/libm.h"
  58 #include "libavutil/imgutils.h"
  59 #include "libavutil/timestamp.h"
  60 #include "libavutil/bprint.h"
  61 #include "libavutil/time.h"
  62 #include "libavformat/os_support.h"
  63
  64 #include "libavformat/ffm.h" // not public API
  65
  66 # include "libavfilter/avcodec.h"
  67 # include "libavfilter/avfilter.h"
  68 # include "libavfilter/buffersrc.h"
  69 # include "libavfilter/buffersink.h"
  70
  71 #if HAVE_SYS_RESOURCE_H
  72 #include <sys/time.h>
  73 #include <sys/types.h>
  74 #include <sys/resource.h>
  75 #elif HAVE_GETPROCESSTIMES
  76 #include <windows.h>
  77 #endif
  78 #if HAVE_GETPROCESSMEMORYINFO
  79 #include <windows.h>
  80 #include <psapi.h>
  81 #endif
  82
  83 #if HAVE_SYS_SELECT_H
  84 #include <sys/select.h>
  85 #endif
  86
  87 #if HAVE_TERMIOS_H
  88 #include <fcntl.h>
  89 #include <sys/ioctl.h>
  90 #include <sys/time.h>
  91 #include <termios.h>
  92 #elif HAVE_KBHIT
  93 #include <conio.h>
  94 #endif
  95
  96 #if HAVE_PTHREADS
  97 #include <pthread.h>
  98 #endif
  99
 100 #include <time.h>
 101
 102 #include "ffmpeg.h"
 103 #include "cmdutils.h"
 104
 105 #include "libavutil/avassert.h"
 106
 107 const char program_name[] = "ffmpeg";
 108 const int program_birth_year = 2000;
 109
 110 static FILE *vstats_file;
 111
 112 const char *const forced_keyframes_const_names[] = {
 113     "n",
 114     "n_forced",
 115     "prev_forced_n",
 116     "prev_forced_t",
 117     "t",
 118     NULL
 119 };
 120
 121 static void do_video_stats(OutputStream *ost, int frame_size);
 122 static int64_t getutime(void);
 123 static int64_t getmaxrss(void);
 124
 125 static int run_as_daemon  = 0;
 126 static int64_t video_size = 0;
 127 static int64_t audio_size = 0;
 128 static int64_t subtitle_size = 0;
 129 static int64_t extra_size = 0;
 130 static int nb_frames_dup = 0;
 131 static int nb_frames_drop = 0;
 132 static int64_t decode_error_stat[2];
 133
 134 static int current_time;
 135 AVIOContext *progress_avio = NULL;
 136
 137 static uint8_t *subtitle_out;
 138
 139 #if HAVE_PTHREADS
 140 /* signal to input threads that they should exit; set by the main thread */
 141 static int transcoding_finished;
 142 #endif
 143
 144 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
 145
 146 InputStream **input_streams = NULL;
 147 int        nb_input_streams = 0;
 148 InputFile   **input_files   = NULL;
 149 int        nb_input_files   = 0;
 150
 151 OutputStream **output_streams = NULL;
 152 int         nb_output_streams = 0;
 153 OutputFile   **output_files   = NULL;
 154 int         nb_output_files   = 0;
 155
 156 FilterGraph **filtergraphs;
 157 int        nb_filtergraphs;
 158
 159 #if HAVE_TERMIOS_H
 160
 161 /* init terminal so that we can grab keys */
 162 static struct termios oldtty;
 163 static int restore_tty;
 164 #endif
 165
 166 static void free_input_threads(void);
 167
 168
 169 /* sub2video hack:
 170    Convert subtitles to video with alpha to insert them in filter graphs.
 171    This is a temporary solution until libavfilter gets real subtitles support.
 172  */
 173
 174 static int sub2video_get_blank_frame(InputStream *ist)
 175 {
 176     int ret;
 177     AVFrame *frame = ist->sub2video.frame;
 178
 179     av_frame_unref(frame);
 180     ist->sub2video.frame->width  = ist->sub2video.w;
 181     ist->sub2video.frame->height = ist->sub2video.h;
 182     ist->sub2video.frame->format = AV_PIX_FMT_RGB32;
 183     if ((ret = av_frame_get_buffer(frame, 32)) < 0)
 184         return ret;
 185     memset(frame->data[0], 0, frame->height * frame->linesize[0]);
 186     return 0;
 187 }
 188
 189 static void sub2video_copy_rect(uint8_t *dst, int dst_linesize, int w, int h,
 190                                 AVSubtitleRect *r)
 191 {
 192     uint32_t *pal, *dst2;
 193     uint8_t *src, *src2;
 194     int x, y;
 195
 196     if (r->type != SUBTITLE_BITMAP) {
 197         av_log(NULL, AV_LOG_WARNING, "sub2video: non-bitmap subtitle\n");
 198         return;
 199     }
 200     if (r->x < 0 || r->x + r->w > w || r->y < 0 || r->y + r->h > h) {
 201         av_log(NULL, AV_LOG_WARNING, "sub2video: rectangle overflowing\n");
 202         return;
 203     }
 204
 205     dst += r->y * dst_linesize + r->x * 4;
 206     src = r->pict.data[0];
 207     pal = (uint32_t *)r->pict.data[1];
 208     for (y = 0; y < r->h; y++) {
 209         dst2 = (uint32_t *)dst;
 210         src2 = src;
 211         for (x = 0; x < r->w; x++)
 212             *(dst2++) = pal[*(src2++)];
 213         dst += dst_linesize;
 214         src += r->pict.linesize[0];
 215     }
 216 }
 217
 218 static void sub2video_push_ref(InputStream *ist, int64_t pts)
 219 {
 220     AVFrame *frame = ist->sub2video.frame;
 221     int i;
 222
 223     av_assert1(frame->data[0]);
 224     ist->sub2video.last_pts = frame->pts = pts;
 225     for (i = 0; i < ist->nb_filters; i++)
 226         av_buffersrc_add_frame_flags(ist->filters[i]->filter, frame,
 227                                      AV_BUFFERSRC_FLAG_KEEP_REF |
 228                                      AV_BUFFERSRC_FLAG_PUSH);
 229 }
 230
 231 static void sub2video_update(InputStream *ist, AVSubtitle *sub)
 232 {
 233     int w = ist->sub2video.w, h = ist->sub2video.h;
 234     AVFrame *frame = ist->sub2video.frame;
 235     int8_t *dst;
 236     int     dst_linesize;
 237     int num_rects, i;
 238     int64_t pts, end_pts;
 239
 240     if (!frame)
 241         return;
 242     if (sub) {
 243         pts       = av_rescale_q(sub->pts + sub->start_display_time * 1000,
 244                                  AV_TIME_BASE_Q, ist->st->time_base);
 245         end_pts   = av_rescale_q(sub->pts + sub->end_display_time   * 1000,
 246                                  AV_TIME_BASE_Q, ist->st->time_base);
 247         num_rects = sub->num_rects;
 248     } else {
 249         pts       = ist->sub2video.end_pts;
 250         end_pts   = INT64_MAX;
 251         num_rects = 0;
 252     }
 253     if (sub2video_get_blank_frame(ist) < 0) {
 254         av_log(ist->st->codec, AV_LOG_ERROR,
 255                "Impossible to get a blank canvas.\n");
 256         return;
 257     }
 258     dst          = frame->data    [0];
 259     dst_linesize = frame->linesize[0];
 260     for (i = 0; i < num_rects; i++)
 261         sub2video_copy_rect(dst, dst_linesize, w, h, sub->rects[i]);
 262     sub2video_push_ref(ist, pts);
 263     ist->sub2video.end_pts = end_pts;
 264 }
 265
 266 static void sub2video_heartbeat(InputStream *ist, int64_t pts)
 267 {
 268     InputFile *infile = input_files[ist->file_index];
 269     int i, j, nb_reqs;
 270     int64_t pts2;
 271
 272     /* When a frame is read from a file, examine all sub2video streams in
 273        the same file and send the sub2video frame again. Otherwise, decoded
 274        video frames could be accumulating in the filter graph while a filter
 275        (possibly overlay) is desperately waiting for a subtitle frame. */
 276     for (i = 0; i < infile->nb_streams; i++) {
 277         InputStream *ist2 = input_streams[infile->ist_index + i];
 278         if (!ist2->sub2video.frame)
 279             continue;
 280         /* subtitles seem to be usually muxed ahead of other streams;
 281            if not, substracting a larger time here is necessary */
 282         pts2 = av_rescale_q(pts, ist->st->time_base, ist2->st->time_base) - 1;
 283         /* do not send the heartbeat frame if the subtitle is already ahead */
 284         if (pts2 <= ist2->sub2video.last_pts)
 285             continue;
 286         if (pts2 >= ist2->sub2video.end_pts || !ist2->sub2video.frame->data[0])
 287             sub2video_update(ist2, NULL);
 288         for (j = 0, nb_reqs = 0; j < ist2->nb_filters; j++)
 289             nb_reqs += av_buffersrc_get_nb_failed_requests(ist2->filters[j]->filter);
 290         if (nb_reqs)
 291             sub2video_push_ref(ist2, pts2);
 292     }
 293 }
 294
 295 static void sub2video_flush(InputStream *ist)
 296 {
 297     int i;
 298
 299     for (i = 0; i < ist->nb_filters; i++)
 300         av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
 301 }
 302
 303 /* end of sub2video hack */
 304
 305 void term_exit(void)
 306 {
 307     av_log(NULL, AV_LOG_QUIET, "%s", "");
 308 #if HAVE_TERMIOS_H
 309     if(restore_tty)
 310         tcsetattr (0, TCSANOW, &oldtty);
 311 #endif
 312 }
 313
 314 static volatile int received_sigterm = 0;
 315 static volatile int received_nb_signals = 0;
 316
 317 static void
 318 sigterm_handler(int sig)
 319 {
 320     received_sigterm = sig;
 321     received_nb_signals++;
 322     term_exit();
 323     if(received_nb_signals > 3)
 324         exit_program(123);
 325 }
 326
 327 void term_init(void)
 328 {
 329 #if HAVE_TERMIOS_H
 330     if(!run_as_daemon){
 331         struct termios tty;
 332         int istty = 1;
 333 #if HAVE_ISATTY
 334         istty = isatty(0) && isatty(2);
 335 #endif
 336         if (istty && tcgetattr (0, &tty) == 0) {
 337             oldtty = tty;
 338             restore_tty = 1;
 339
 340             tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
 341                              |INLCR|IGNCR|ICRNL|IXON);
 342             tty.c_oflag |= OPOST;
 343             tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
 344             tty.c_cflag &= ~(CSIZE|PARENB);
 345             tty.c_cflag |= CS8;
 346             tty.c_cc[VMIN] = 1;
 347             tty.c_cc[VTIME] = 0;
 348
 349             tcsetattr (0, TCSANOW, &tty);
 350         }
 351         signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
 352     }
 353 #endif
 354     avformat_network_deinit();
 355
 356     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
 357     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
 358 #ifdef SIGXCPU
 359     signal(SIGXCPU, sigterm_handler);
 360 #endif
 361 }
 362
 363 /* read a key without blocking */
 364 static int read_key(void)
 365 {
 366     unsigned char ch;
 367 #if HAVE_TERMIOS_H
 368     int n = 1;
 369     struct timeval tv;
 370     fd_set rfds;
 371
 372     FD_ZERO(&rfds);
 373     FD_SET(0, &rfds);
 374     tv.tv_sec = 0;
 375     tv.tv_usec = 0;
 376     n = select(1, &rfds, NULL, NULL, &tv);
 377     if (n > 0) {
 378         n = read(0, &ch, 1);
 379         if (n == 1)
 380             return ch;
 381
 382         return n;
 383     }
 384 #elif HAVE_KBHIT
 385 #    if HAVE_PEEKNAMEDPIPE
 386     static int is_pipe;
 387     static HANDLE input_handle;
 388     DWORD dw, nchars;
 389     if(!input_handle){
 390         input_handle = GetStdHandle(STD_INPUT_HANDLE);
 391         is_pipe = !GetConsoleMode(input_handle, &dw);
 392     }
 393
 394     if (stdin->_cnt > 0) {
 395         read(0, &ch, 1);
 396         return ch;
 397     }
 398     if (is_pipe) {
 399         /* When running under a GUI, you will end here. */
 400         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL)) {
 401             // input pipe may have been closed by the program that ran ffmpeg
 402             return -1;
 403         }
 404         //Read it
 405         if(nchars != 0) {
 406             read(0, &ch, 1);
 407             return ch;
 408         }else{
 409             return -1;
 410         }
 411     }
 412 #    endif
 413     if(kbhit())
 414         return(getch());
 415 #endif
 416     return -1;
 417 }
 418
 419 static int decode_interrupt_cb(void *ctx)
 420 {
 421     return received_nb_signals > 1;
 422 }
 423
 424 const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
 425
 426 static void ffmpeg_cleanup(int ret)
 427 {
 428     int i, j;
 429
 430     if (do_benchmark) {
 431         int maxrss = getmaxrss() / 1024;
 432         printf("bench: maxrss=%ikB\n", maxrss);
 433     }
 434
 435     for (i = 0; i < nb_filtergraphs; i++) {
 436         avfilter_graph_free(&filtergraphs[i]->graph);
 437         for (j = 0; j < filtergraphs[i]->nb_inputs; j++) {
 438             av_freep(&filtergraphs[i]->inputs[j]->name);
 439             av_freep(&filtergraphs[i]->inputs[j]);
 440         }
 441         av_freep(&filtergraphs[i]->inputs);
 442         for (j = 0; j < filtergraphs[i]->nb_outputs; j++) {
 443             av_freep(&filtergraphs[i]->outputs[j]->name);
 444             av_freep(&filtergraphs[i]->outputs[j]);
 445         }
 446         av_freep(&filtergraphs[i]->outputs);
 447         av_freep(&filtergraphs[i]->graph_desc);
 448         av_freep(&filtergraphs[i]);
 449     }
 450     av_freep(&filtergraphs);
 451
 452     av_freep(&subtitle_out);
 453
 454     /* close files */
 455     for (i = 0; i < nb_output_files; i++) {
 456         AVFormatContext *s = output_files[i]->ctx;
 457         if (s && s->oformat && !(s->oformat->flags & AVFMT_NOFILE) && s->pb)
 458             avio_close(s->pb);
 459         avformat_free_context(s);
 460         av_dict_free(&output_files[i]->opts);
 461         av_freep(&output_files[i]);
 462     }
 463     for (i = 0; i < nb_output_streams; i++) {
 464         AVBitStreamFilterContext *bsfc = output_streams[i]->bitstream_filters;
 465         while (bsfc) {
 466             AVBitStreamFilterContext *next = bsfc->next;
 467             av_bitstream_filter_close(bsfc);
 468             bsfc = next;
 469         }
 470         output_streams[i]->bitstream_filters = NULL;
 471         av_frame_free(&output_streams[i]->filtered_frame);
 472
 473         av_parser_close(output_streams[i]->parser);
 474
 475         av_freep(&output_streams[i]->forced_keyframes);
 476         av_expr_free(output_streams[i]->forced_keyframes_pexpr);
 477         av_freep(&output_streams[i]->avfilter);
 478         av_freep(&output_streams[i]->logfile_prefix);
 479         av_freep(&output_streams[i]);
 480     }
 481 #if HAVE_PTHREADS
 482     free_input_threads();
 483 #endif
 484     for (i = 0; i < nb_input_files; i++) {
 485         avformat_close_input(&input_files[i]->ctx);
 486         av_freep(&input_files[i]);
 487     }
 488     for (i = 0; i < nb_input_streams; i++) {
 489         av_frame_free(&input_streams[i]->decoded_frame);
 490         av_frame_free(&input_streams[i]->filter_frame);
 491         av_dict_free(&input_streams[i]->opts);
 492         avsubtitle_free(&input_streams[i]->prev_sub.subtitle);
 493         av_frame_free(&input_streams[i]->sub2video.frame);
 494         av_freep(&input_streams[i]->filters);
 495         av_freep(&input_streams[i]->hwaccel_device);
 496         av_freep(&input_streams[i]);
 497     }
 498
 499     if (vstats_file)
 500         fclose(vstats_file);
 501     av_free(vstats_filename);
 502
 503     av_freep(&input_streams);
 504     av_freep(&input_files);
 505     av_freep(&output_streams);
 506     av_freep(&output_files);
 507
 508     uninit_opts();
 509
 510     avformat_network_deinit();
 511
 512     if (received_sigterm) {
 513         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
 514                (int) received_sigterm);
 515     }
 516     term_exit();
 517 }
 518
 519 void assert_avoptions(AVDictionary *m)
 520 {
 521     AVDictionaryEntry *t;
 522     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
 523         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
 524         exit_program(1);
 525     }
 526 }
 527
 528 static void abort_codec_experimental(AVCodec *c, int encoder)
 529 {
 530     exit_program(1);
 531 }
 532
 533 static void update_benchmark(const char *fmt, ...)
 534 {
 535     if (do_benchmark_all) {
 536         int64_t t = getutime();
 537         va_list va;
 538         char buf[1024];
 539
 540         if (fmt) {
 541             va_start(va, fmt);
 542             vsnprintf(buf, sizeof(buf), fmt, va);
 543             va_end(va);
 544             printf("bench: %8"PRIu64" %s \n", t - current_time, buf);
 545         }
 546         current_time = t;
 547     }
 548 }
 549
 550 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
 551 {
 552     AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
 553     AVCodecContext          *avctx = ost->st->codec;
 554     int ret;
 555
 556     if ((avctx->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
 557         (avctx->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
 558         pkt->pts = pkt->dts = AV_NOPTS_VALUE;
 559
 560     /*
 561      * Audio encoders may split the packets --  #frames in != #packets out.
 562      * But there is no reordering, so we can limit the number of output packets
 563      * by simply dropping them here.
 564      * Counting encoded video frames needs to be done separately because of
 565      * reordering, see do_video_out()
 566      */
 567     if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
 568         if (ost->frame_number >= ost->max_frames) {
 569             av_free_packet(pkt);
 570             return;
 571         }
 572         ost->frame_number++;
 573     }
 574
 575     while (bsfc) {
 576         AVPacket new_pkt = *pkt;
 577         int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
 578                                            &new_pkt.data, &new_pkt.size,
 579                                            pkt->data, pkt->size,
 580                                            pkt->flags & AV_PKT_FLAG_KEY);
 581         if(a == 0 && new_pkt.data != pkt->data && new_pkt.destruct) {
 582             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
 583             if(t) {
 584                 memcpy(t, new_pkt.data, new_pkt.size);
 585                 memset(t + new_pkt.size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
 586                 new_pkt.data = t;
 587                 new_pkt.buf = NULL;
 588                 a = 1;
 589             } else
 590                 a = AVERROR(ENOMEM);
 591         }
 592         if (a > 0) {
 593             av_free_packet(pkt);
 594             new_pkt.buf = av_buffer_create(new_pkt.data, new_pkt.size,
 595                                            av_buffer_default_free, NULL, 0);
 596             if (!new_pkt.buf)
 597                 exit_program(1);
 598         } else if (a < 0) {
 599             av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
 600                    bsfc->filter->name, pkt->stream_index,
 601                    avctx->codec ? avctx->codec->name : "copy");
 602             print_error("", a);
 603             if (exit_on_error)
 604                 exit_program(1);
 605         }
 606         *pkt = new_pkt;
 607
 608         bsfc = bsfc->next;
 609     }
 610
 611     if (!(s->oformat->flags & AVFMT_NOTIMESTAMPS) &&
 612         (avctx->codec_type == AVMEDIA_TYPE_AUDIO || avctx->codec_type == AVMEDIA_TYPE_VIDEO) &&
 613         pkt->dts != AV_NOPTS_VALUE &&
 614         ost->last_mux_dts != AV_NOPTS_VALUE) {
 615       int64_t max = ost->last_mux_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
 616       if (pkt->dts < max) {
 617         int loglevel = max - pkt->dts > 2 || avctx->codec_type == AVMEDIA_TYPE_VIDEO ? AV_LOG_WARNING : AV_LOG_DEBUG;
 618         av_log(s, loglevel, "Non-monotonous DTS in output stream "
 619                "%d:%d; previous: %"PRId64", current: %"PRId64"; ",
 620                ost->file_index, ost->st->index, ost->last_mux_dts, pkt->dts);
 621         if (exit_on_error) {
 622             av_log(NULL, AV_LOG_FATAL, "aborting.\n");
 623             exit_program(1);
 624         }
 625         av_log(s, loglevel, "changing to %"PRId64". This may result "
 626                "in incorrect timestamps in the output file.\n",
 627                max);
 628         if(pkt->pts >= pkt->dts)
 629             pkt->pts = FFMAX(pkt->pts, max);
 630         pkt->dts = max;
 631       }
 632     }
 633     ost->last_mux_dts = pkt->dts;
 634
 635     pkt->stream_index = ost->index;
 636
 637     if (debug_ts) {
 638         av_log(NULL, AV_LOG_INFO, "muxer <- type:%s "
 639                 "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s size:%d\n",
 640                 av_get_media_type_string(ost->st->codec->codec_type),
 641                 av_ts2str(pkt->pts), av_ts2timestr(pkt->pts, &ost->st->time_base),
 642                 av_ts2str(pkt->dts), av_ts2timestr(pkt->dts, &ost->st->time_base),
 643                 pkt->size
 644               );
 645     }
 646
 647     ret = av_interleaved_write_frame(s, pkt);
 648     if (ret < 0) {
 649         print_error("av_interleaved_write_frame()", ret);
 650         exit_program(1);
 651     }
 652 }
 653
 654 static void close_output_stream(OutputStream *ost)
 655 {
 656     OutputFile *of = output_files[ost->file_index];
 657
 658     ost->finished = 1;
 659     if (of->shortest) {
 660         int64_t end = av_rescale_q(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, AV_TIME_BASE_Q);
 661         of->recording_time = FFMIN(of->recording_time, end);
 662     }
 663 }
 664
 665 static int check_recording_time(OutputStream *ost)
 666 {
 667     OutputFile *of = output_files[ost->file_index];
 668
 669     if (of->recording_time != INT64_MAX &&
 670         av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
 671                       AV_TIME_BASE_Q) >= 0) {
 672         close_output_stream(ost);
 673         return 0;
 674     }
 675     return 1;
 676 }
 677
 678 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
 679                          AVFrame *frame)
 680 {
 681     AVCodecContext *enc = ost->st->codec;
 682     AVPacket pkt;
 683     int got_packet = 0;
 684
 685     av_init_packet(&pkt);
 686     pkt.data = NULL;
 687     pkt.size = 0;
 688
 689     if (!check_recording_time(ost))
 690         return;
 691
 692     if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
 693         frame->pts = ost->sync_opts;
 694     ost->sync_opts = frame->pts + frame->nb_samples;
 695
 696     av_assert0(pkt.size || !pkt.data);
 697     update_benchmark(NULL);
 698     if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
 699         av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
 700         exit_program(1);
 701     }
 702     update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
 703
 704     if (got_packet) {
 705         if (pkt.pts != AV_NOPTS_VALUE)
 706             pkt.pts      = av_rescale_q(pkt.pts,      enc->time_base, ost->st->time_base);
 707         if (pkt.dts != AV_NOPTS_VALUE)
 708             pkt.dts      = av_rescale_q(pkt.dts,      enc->time_base, ost->st->time_base);
 709         if (pkt.duration > 0)
 710             pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
 711
 712         if (debug_ts) {
 713             av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
 714                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
 715                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
 716                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
 717         }
 718
 719         audio_size += pkt.size;
 720         write_frame(s, &pkt, ost);
 721
 722         av_free_packet(&pkt);
 723     }
 724 }
 725
 726 static void do_subtitle_out(AVFormatContext *s,
 727                             OutputStream *ost,
 728                             InputStream *ist,
 729                             AVSubtitle *sub)
 730 {
 731     int subtitle_out_max_size = 1024 * 1024;
 732     int subtitle_out_size, nb, i;
 733     AVCodecContext *enc;
 734     AVPacket pkt;
 735     int64_t pts;
 736
 737     if (sub->pts == AV_NOPTS_VALUE) {
 738         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
 739         if (exit_on_error)
 740             exit_program(1);
 741         return;
 742     }
 743
 744     enc = ost->st->codec;
 745
 746     if (!subtitle_out) {
 747         subtitle_out = av_malloc(subtitle_out_max_size);
 748     }
 749
 750     /* Note: DVB subtitle need one packet to draw them and one other
 751        packet to clear them */
 752     /* XXX: signal it in the codec context ? */
 753     if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE)
 754         nb = 2;
 755     else
 756         nb = 1;
 757
 758     /* shift timestamp to honor -ss and make check_recording_time() work with -t */
 759     pts = sub->pts;
 760     if (output_files[ost->file_index]->start_time != AV_NOPTS_VALUE)
 761         pts -= output_files[ost->file_index]->start_time;
 762     for (i = 0; i < nb; i++) {
 763         ost->sync_opts = av_rescale_q(pts, AV_TIME_BASE_Q, enc->time_base);
 764         if (!check_recording_time(ost))
 765             return;
 766
 767         sub->pts = pts;
 768         // start_display_time is required to be 0
 769         sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
 770         sub->end_display_time  -= sub->start_display_time;
 771         sub->start_display_time = 0;
 772         if (i == 1)
 773             sub->num_rects = 0;
 774         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
 775                                                     subtitle_out_max_size, sub);
 776         if (subtitle_out_size < 0) {
 777             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
 778             exit_program(1);
 779         }
 780
 781         av_init_packet(&pkt);
 782         pkt.data = subtitle_out;
 783         pkt.size = subtitle_out_size;
 784         pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
 785         pkt.duration = av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->st->time_base);
 786         if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
 787             /* XXX: the pts correction is handled here. Maybe handling
 788                it in the codec would be better */
 789             if (i == 0)
 790                 pkt.pts += 90 * sub->start_display_time;
 791             else
 792                 pkt.pts += 90 * sub->end_display_time;
 793         }
 794         subtitle_size += pkt.size;
 795         write_frame(s, &pkt, ost);
 796     }
 797 }
 798
 799 static void do_video_out(AVFormatContext *s,
 800                          OutputStream *ost,
 801                          AVFrame *in_picture)
 802 {
 803     int ret, format_video_sync;
 804     AVPacket pkt;
 805     AVCodecContext *enc = ost->st->codec;
 806     int nb_frames, i;
 807     double sync_ipts, delta;
 808     double duration = 0;
 809     int frame_size = 0;
 810     InputStream *ist = NULL;
 811
 812     if (ost->source_index >= 0)
 813         ist = input_streams[ost->source_index];
 814
 815     if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
 816         duration = 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base));
 817
 818     sync_ipts = in_picture->pts;
 819     delta = sync_ipts - ost->sync_opts + duration;
 820
 821     /* by default, we output a single frame */
 822     nb_frames = 1;
 823
 824     format_video_sync = video_sync_method;
 825     if (format_video_sync == VSYNC_AUTO) {
 826         if(!strcmp(s->oformat->name, "avi")) {
 827             format_video_sync = VSYNC_VFR;
 828         } else
 829             format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : VSYNC_CFR;
 830         if (   ist
 831             && format_video_sync == VSYNC_CFR
 832             && input_files[ist->file_index]->ctx->nb_streams == 1
 833             && input_files[ist->file_index]->input_ts_offset == 0) {
 834             format_video_sync = VSYNC_VSCFR;
 835         }
 836         if (format_video_sync == VSYNC_CFR && copy_ts) {
 837             format_video_sync = VSYNC_VSCFR;
 838         }
 839     }
 840
 841     switch (format_video_sync) {
 842     case VSYNC_VSCFR:
 843         if (ost->frame_number == 0 && delta - duration >= 0.5) {
 844             av_log(NULL, AV_LOG_DEBUG, "Not duplicating %d initial frames\n", (int)lrintf(delta - duration));
 845             delta = duration;
 846             ost->sync_opts = lrint(sync_ipts);
 847         }
 848     case VSYNC_CFR:
 849         // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
 850         if (delta < -1.1)
 851             nb_frames = 0;
 852         else if (delta > 1.1)
 853             nb_frames = lrintf(delta);
 854         break;
 855     case VSYNC_VFR:
 856         if (delta <= -0.6)
 857             nb_frames = 0;
 858         else if (delta > 0.6)
 859             ost->sync_opts = lrint(sync_ipts);
 860         break;
 861     case VSYNC_DROP:
 862     case VSYNC_PASSTHROUGH:
 863         ost->sync_opts = lrint(sync_ipts);
 864         break;
 865     default:
 866         av_assert0(0);
 867     }
 868
 869     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
 870     if (nb_frames == 0) {
 871         nb_frames_drop++;
 872         av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
 873         return;
 874     } else if (nb_frames > 1) {
 875         if (nb_frames > dts_error_threshold * 30) {
 876             av_log(NULL, AV_LOG_ERROR, "%d frame duplication too large, skipping\n", nb_frames - 1);
 877             nb_frames_drop++;
 878             return;
 879         }
 880         nb_frames_dup += nb_frames - 1;
 881         av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
 882     }
 883
 884   /* duplicates frame if needed */
 885   for (i = 0; i < nb_frames; i++) {
 886     av_init_packet(&pkt);
 887     pkt.data = NULL;
 888     pkt.size = 0;
 889
 890     in_picture->pts = ost->sync_opts;
 891
 892 #if 1
 893     if (!check_recording_time(ost))
 894 #else
 895     if (ost->frame_number >= ost->max_frames)
 896 #endif
 897         return;
 898
 899     if (s->oformat->flags & AVFMT_RAWPICTURE &&
 900         enc->codec->id == AV_CODEC_ID_RAWVIDEO) {
 901         /* raw pictures are written as AVPicture structure to
 902            avoid any copies. We support temporarily the older
 903            method. */
 904         enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
 905         enc->coded_frame->top_field_first  = in_picture->top_field_first;
 906         if (enc->coded_frame->interlaced_frame)
 907             enc->field_order = enc->coded_frame->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
 908         else
 909             enc->field_order = AV_FIELD_PROGRESSIVE;
 910         pkt.data   = (uint8_t *)in_picture;
 911         pkt.size   =  sizeof(AVPicture);
 912         pkt.pts    = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
 913         pkt.flags |= AV_PKT_FLAG_KEY;
 914
 915         video_size += pkt.size;
 916         write_frame(s, &pkt, ost);
 917     } else {
 918         int got_packet, forced_keyframe = 0;
 919         double pts_time;
 920
 921         if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME) &&
 922             ost->top_field_first >= 0)
 923             in_picture->top_field_first = !!ost->top_field_first;
 924
 925         if (in_picture->interlaced_frame) {
 926             if (enc->codec->id == AV_CODEC_ID_MJPEG)
 927                 enc->field_order = in_picture->top_field_first ? AV_FIELD_TT:AV_FIELD_BB;
 928             else
 929                 enc->field_order = in_picture->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
 930         } else
 931             enc->field_order = AV_FIELD_PROGRESSIVE;
 932
 933         in_picture->quality = ost->st->codec->global_quality;
 934         if (!enc->me_threshold)
 935             in_picture->pict_type = 0;
 936
 937         pts_time = in_picture->pts != AV_NOPTS_VALUE ?
 938             in_picture->pts * av_q2d(enc->time_base) : NAN;
 939         if (ost->forced_kf_index < ost->forced_kf_count &&
 940             in_picture->pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
 941             ost->forced_kf_index++;
 942             forced_keyframe = 1;
 943         } else if (ost->forced_keyframes_pexpr) {
 944             double res;
 945             ost->forced_keyframes_expr_const_values[FKF_T] = pts_time;
 946             res = av_expr_eval(ost->forced_keyframes_pexpr,
 947                                ost->forced_keyframes_expr_const_values, NULL);
 948             av_dlog(NULL, "force_key_frame: n:%f n_forced:%f prev_forced_n:%f t:%f prev_forced_t:%f -> res:%f\n",
 949                     ost->forced_keyframes_expr_const_values[FKF_N],
 950                     ost->forced_keyframes_expr_const_values[FKF_N_FORCED],
 951                     ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N],
 952                     ost->forced_keyframes_expr_const_values[FKF_T],
 953                     ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T],
 954                     res);
 955             if (res) {
 956                 forced_keyframe = 1;
 957                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] =
 958                     ost->forced_keyframes_expr_const_values[FKF_N];
 959                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] =
 960                     ost->forced_keyframes_expr_const_values[FKF_T];
 961                 ost->forced_keyframes_expr_const_values[FKF_N_FORCED] += 1;
 962             }
 963
 964             ost->forced_keyframes_expr_const_values[FKF_N] += 1;
 965         }
 966         if (forced_keyframe) {
 967             in_picture->pict_type = AV_PICTURE_TYPE_I;
 968             av_log(NULL, AV_LOG_DEBUG, "Forced keyframe at time %f\n", pts_time);
 969         }
 970
 971         update_benchmark(NULL);
 972         ret = avcodec_encode_video2(enc, &pkt, in_picture, &got_packet);
 973         update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
 974         if (ret < 0) {
 975             av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
 976             exit_program(1);
 977         }
 978
 979         if (got_packet) {
 980             if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
 981                 pkt.pts = ost->sync_opts;
 982
 983             if (pkt.pts != AV_NOPTS_VALUE)
 984                 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
 985             if (pkt.dts != AV_NOPTS_VALUE)
 986                 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
 987
 988             if (debug_ts) {
 989                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
 990                     "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
 991                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
 992                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
 993             }
 994
 995             frame_size = pkt.size;
 996             video_size += pkt.size;
 997             write_frame(s, &pkt, ost);
 998             av_free_packet(&pkt);
 999
1000             /* if two pass, output log */
1001             if (ost->logfile && enc->stats_out) {
1002                 fprintf(ost->logfile, "%s", enc->stats_out);
1003             }
1004         }
1005     }
1006     ost->sync_opts++;
1007     /*
1008      * For video, number of frames in == number of packets out.
1009      * But there may be reordering, so we can't throw away frames on encoder
1010      * flush, we need to limit them here, before they go into encoder.
1011      */
1012     ost->frame_number++;
1013
1014     if (vstats_filename && frame_size)
1015         do_video_stats(ost, frame_size);
1016   }
1017 }
1018
1019 static double psnr(double d)
1020 {
1021     return -10.0 * log(d) / log(10.0);
1022 }
1023
1024 static void do_video_stats(OutputStream *ost, int frame_size)
1025 {
1026     AVCodecContext *enc;
1027     int frame_number;
1028     double ti1, bitrate, avg_bitrate;
1029
1030     /* this is executed just the first time do_video_stats is called */
1031     if (!vstats_file) {
1032         vstats_file = fopen(vstats_filename, "w");
1033         if (!vstats_file) {
1034             perror("fopen");
1035             exit_program(1);
1036         }
1037     }
1038
1039     enc = ost->st->codec;
1040     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1041         frame_number = ost->st->nb_frames;
1042         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
1043         if (enc->flags&CODEC_FLAG_PSNR)
1044             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
1045
1046         fprintf(vstats_file,"f_size= %6d ", frame_size);
1047         /* compute pts value */
1048         ti1 = ost->st->pts.val * av_q2d(enc->time_base);
1049         if (ti1 < 0.01)
1050             ti1 = 0.01;
1051
1052         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1053         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1054         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1055                (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1056         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1057     }
1058 }
1059
1060 /**
1061  * Get and encode new output from any of the filtergraphs, without causing
1062  * activity.
1063  *
1064  * @return  0 for success, <0 for severe errors
1065  */
1066 static int reap_filters(void)
1067 {
1068     AVFrame *filtered_frame = NULL;
1069     int i;
1070     int64_t frame_pts;
1071
1072     /* Reap all buffers present in the buffer sinks */
1073     for (i = 0; i < nb_output_streams; i++) {
1074         OutputStream *ost = output_streams[i];
1075         OutputFile    *of = output_files[ost->file_index];
1076         int ret = 0;
1077
1078         if (!ost->filter)
1079             continue;
1080
1081         if (!ost->filtered_frame && !(ost->filtered_frame = av_frame_alloc())) {
1082             return AVERROR(ENOMEM);
1083         }
1084         filtered_frame = ost->filtered_frame;
1085
1086         while (1) {
1087             ret = av_buffersink_get_frame_flags(ost->filter->filter, filtered_frame,
1088                                                AV_BUFFERSINK_FLAG_NO_REQUEST);
1089             if (ret < 0) {
1090                 if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
1091                     av_log(NULL, AV_LOG_WARNING,
1092                            "Error in av_buffersink_get_frame_flags(): %s\n", av_err2str(ret));
1093                 }
1094                 break;
1095             }
1096             frame_pts = AV_NOPTS_VALUE;
1097             if (filtered_frame->pts != AV_NOPTS_VALUE) {
1098                 int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
1099                 filtered_frame->pts = frame_pts = av_rescale_q(filtered_frame->pts,
1100                                                 ost->filter->filter->inputs[0]->time_base,
1101                                                 ost->st->codec->time_base) -
1102                                     av_rescale_q(start_time,
1103                                                 AV_TIME_BASE_Q,
1104                                                 ost->st->codec->time_base);
1105             }
1106             //if (ost->source_index >= 0)
1107             //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
1108
1109
1110             switch (ost->filter->filter->inputs[0]->type) {
1111             case AVMEDIA_TYPE_VIDEO:
1112                 filtered_frame->pts = frame_pts;
1113                 if (!ost->frame_aspect_ratio.num)
1114                     ost->st->codec->sample_aspect_ratio = filtered_frame->sample_aspect_ratio;
1115
1116                 do_video_out(of->ctx, ost, filtered_frame);
1117                 break;
1118             case AVMEDIA_TYPE_AUDIO:
1119                 filtered_frame->pts = frame_pts;
1120                 if (!(ost->st->codec->codec->capabilities & CODEC_CAP_PARAM_CHANGE) &&
1121                     ost->st->codec->channels != av_frame_get_channels(filtered_frame)) {
1122                     av_log(NULL, AV_LOG_ERROR,
1123                            "Audio filter graph output is not normalized and encoder does not support parameter changes\n");
1124                     break;
1125                 }
1126                 do_audio_out(of->ctx, ost, filtered_frame);
1127                 break;
1128             default:
1129                 // TODO support subtitle filters
1130                 av_assert0(0);
1131             }
1132
1133             av_frame_unref(filtered_frame);
1134         }
1135     }
1136
1137     return 0;
1138 }
1139
1140 static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
1141 {
1142     char buf[1024];
1143     AVBPrint buf_script;
1144     OutputStream *ost;
1145     AVFormatContext *oc;
1146     int64_t total_size;
1147     AVCodecContext *enc;
1148     int frame_number, vid, i;
1149     double bitrate;
1150     int64_t pts = INT64_MIN;
1151     static int64_t last_time = -1;
1152     static int qp_histogram[52];
1153     int hours, mins, secs, us;
1154
1155     if (!print_stats && !is_last_report && !progress_avio)
1156         return;
1157
1158     if (!is_last_report) {
1159         if (last_time == -1) {
1160             last_time = cur_time;
1161             return;
1162         }
1163         if ((cur_time - last_time) < 500000)
1164             return;
1165         last_time = cur_time;
1166     }
1167
1168
1169     oc = output_files[0]->ctx;
1170
1171     total_size = avio_size(oc->pb);
1172     if (total_size <= 0) // FIXME improve avio_size() so it works with non seekable output too
1173         total_size = avio_tell(oc->pb);
1174
1175     buf[0] = '\0';
1176     vid = 0;
1177     av_bprint_init(&buf_script, 0, 1);
1178     for (i = 0; i < nb_output_streams; i++) {
1179         float q = -1;
1180         ost = output_streams[i];
1181         enc = ost->st->codec;
1182         if (!ost->stream_copy && enc->coded_frame)
1183             q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
1184         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1185             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1186             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1187                        ost->file_index, ost->index, q);
1188         }
1189         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1190             float fps, t = (cur_time-timer_start) / 1000000.0;
1191
1192             frame_number = ost->frame_number;
1193             fps = t > 1 ? frame_number / t : 0;
1194             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
1195                      frame_number, fps < 9.95, fps, q);
1196             av_bprintf(&buf_script, "frame=%d\n", frame_number);
1197             av_bprintf(&buf_script, "fps=%.1f\n", fps);
1198             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1199                        ost->file_index, ost->index, q);
1200             if (is_last_report)
1201                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1202             if (qp_hist) {
1203                 int j;
1204                 int qp = lrintf(q);
1205                 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
1206                     qp_histogram[qp]++;
1207                 for (j = 0; j < 32; j++)
1208                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log2(qp_histogram[j] + 1)));
1209             }
1210             if ((enc->flags&CODEC_FLAG_PSNR) && (enc->coded_frame || is_last_report)) {
1211                 int j;
1212                 double error, error_sum = 0;
1213                 double scale, scale_sum = 0;
1214                 double p;
1215                 char type[3] = { 'Y','U','V' };
1216                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1217                 for (j = 0; j < 3; j++) {
1218                     if (is_last_report) {
1219                         error = enc->error[j];
1220                         scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
1221                     } else {
1222                         error = enc->coded_frame->error[j];
1223                         scale = enc->width * enc->height * 255.0 * 255.0;
1224                     }
1225                     if (j)
1226                         scale /= 4;
1227                     error_sum += error;
1228                     scale_sum += scale;
1229                     p = psnr(error / scale);
1230                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], p);
1231                     av_bprintf(&buf_script, "stream_%d_%d_psnr_%c=%2.2f\n",
1232                                ost->file_index, ost->index, type[j] | 32, p);
1233                 }
1234                 p = psnr(error_sum / scale_sum);
1235                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
1236                 av_bprintf(&buf_script, "stream_%d_%d_psnr_all=%2.2f\n",
1237                            ost->file_index, ost->index, p);
1238             }
1239             vid = 1;
1240         }
1241         /* compute min output value */
1242         if ((is_last_report || !ost->finished) && ost->st->pts.val != AV_NOPTS_VALUE)
1243             pts = FFMAX(pts, av_rescale_q(ost->st->pts.val,
1244                                           ost->st->time_base, AV_TIME_BASE_Q));
1245     }
1246
1247     secs = pts / AV_TIME_BASE;
1248     us = pts % AV_TIME_BASE;
1249     mins = secs / 60;
1250     secs %= 60;
1251     hours = mins / 60;
1252     mins %= 60;
1253
1254     bitrate = pts && total_size >= 0 ? total_size * 8 / (pts / 1000.0) : -1;
1255
1256     if (total_size < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1257                                  "size=N/A time=");
1258     else                snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1259                                  "size=%8.0fkB time=", total_size / 1024.0);
1260     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1261              "%02d:%02d:%02d.%02d ", hours, mins, secs,
1262              (100 * us) / AV_TIME_BASE);
1263     if (bitrate < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1264                               "bitrate=N/A");
1265     else             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1266                               "bitrate=%6.1fkbits/s", bitrate);
1267     if (total_size < 0) av_bprintf(&buf_script, "total_size=N/A\n");
1268     else                av_bprintf(&buf_script, "total_size=%"PRId64"\n", total_size);
1269     av_bprintf(&buf_script, "out_time_ms=%"PRId64"\n", pts);
1270     av_bprintf(&buf_script, "out_time=%02d:%02d:%02d.%06d\n",
1271                hours, mins, secs, us);
1272
1273     if (nb_frames_dup || nb_frames_drop)
1274         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1275                 nb_frames_dup, nb_frames_drop);
1276     av_bprintf(&buf_script, "dup_frames=%d\n", nb_frames_dup);
1277     av_bprintf(&buf_script, "drop_frames=%d\n", nb_frames_drop);
1278
1279     if (print_stats || is_last_report) {
1280         if (print_stats==1 && AV_LOG_INFO > av_log_get_level()) {
1281             fprintf(stderr, "%s    \r", buf);
1282         } else
1283             av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
1284
1285     fflush(stderr);
1286     }
1287
1288     if (progress_avio) {
1289         av_bprintf(&buf_script, "progress=%s\n",
1290                    is_last_report ? "end" : "continue");
1291         avio_write(progress_avio, buf_script.str,
1292                    FFMIN(buf_script.len, buf_script.size - 1));
1293         avio_flush(progress_avio);
1294         av_bprint_finalize(&buf_script, NULL);
1295         if (is_last_report) {
1296             avio_close(progress_avio);
1297             progress_avio = NULL;
1298         }
1299     }
1300
1301     if (is_last_report) {
1302         int64_t raw= audio_size + video_size + subtitle_size + extra_size;
1303         av_log(NULL, AV_LOG_INFO, "\n");
1304         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB subtitle:%1.0f global headers:%1.0fkB muxing overhead %f%%\n",
1305                video_size / 1024.0,
1306                audio_size / 1024.0,
1307                subtitle_size / 1024.0,
1308                extra_size / 1024.0,
1309                100.0 * (total_size - raw) / raw
1310         );
1311         if(video_size + audio_size + subtitle_size + extra_size == 0){
1312             av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
1313         }
1314     }
1315 }
1316
1317 static void flush_encoders(void)
1318 {
1319     int i, ret;
1320
1321     for (i = 0; i < nb_output_streams; i++) {
1322         OutputStream   *ost = output_streams[i];
1323         AVCodecContext *enc = ost->st->codec;
1324         AVFormatContext *os = output_files[ost->file_index]->ctx;
1325         int stop_encoding = 0;
1326
1327         if (!ost->encoding_needed)
1328             continue;
1329
1330         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
1331             continue;
1332         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == AV_CODEC_ID_RAWVIDEO)
1333             continue;
1334
1335         for (;;) {
1336             int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
1337             const char *desc;
1338             int64_t *size;
1339
1340             switch (ost->st->codec->codec_type) {
1341             case AVMEDIA_TYPE_AUDIO:
1342                 encode = avcodec_encode_audio2;
1343                 desc   = "Audio";
1344                 size   = &audio_size;
1345                 break;
1346             case AVMEDIA_TYPE_VIDEO:
1347                 encode = avcodec_encode_video2;
1348                 desc   = "Video";
1349                 size   = &video_size;
1350                 break;
1351             default:
1352                 stop_encoding = 1;
1353             }
1354
1355             if (encode) {
1356                 AVPacket pkt;
1357                 int got_packet;
1358                 av_init_packet(&pkt);
1359                 pkt.data = NULL;
1360                 pkt.size = 0;
1361
1362                 update_benchmark(NULL);
1363                 ret = encode(enc, &pkt, NULL, &got_packet);
1364                 update_benchmark("flush %s %d.%d", desc, ost->file_index, ost->index);
1365                 if (ret < 0) {
1366                     av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
1367                     exit_program(1);
1368                 }
1369                 *size += pkt.size;
1370                 if (ost->logfile && enc->stats_out) {
1371                     fprintf(ost->logfile, "%s", enc->stats_out);
1372                 }
1373                 if (!got_packet) {
1374                     stop_encoding = 1;
1375                     break;
1376                 }
1377                 if (pkt.pts != AV_NOPTS_VALUE)
1378                     pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
1379                 if (pkt.dts != AV_NOPTS_VALUE)
1380                     pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
1381                 if (pkt.duration > 0)
1382                     pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
1383                 write_frame(os, &pkt, ost);
1384                 if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && vstats_filename) {
1385                     do_video_stats(ost, pkt.size);
1386                 }
1387             }
1388
1389             if (stop_encoding)
1390                 break;
1391         }
1392     }
1393 }
1394
1395 /*
1396  * Check whether a packet from ist should be written into ost at this time
1397  */
1398 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1399 {
1400     OutputFile *of = output_files[ost->file_index];
1401     int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
1402
1403     if (ost->source_index != ist_index)
1404         return 0;
1405
1406     if (of->start_time != AV_NOPTS_VALUE && ist->pts < of->start_time)
1407         return 0;
1408
1409     return 1;
1410 }
1411
1412 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1413 {
1414     OutputFile *of = output_files[ost->file_index];
1415     InputFile   *f = input_files [ist->file_index];
1416     int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
1417     int64_t ost_tb_start_time = av_rescale_q(start_time, AV_TIME_BASE_Q, ost->st->time_base);
1418     int64_t ist_tb_start_time = av_rescale_q(start_time, AV_TIME_BASE_Q, ist->st->time_base);
1419     AVPicture pict;
1420     AVPacket opkt;
1421
1422     av_init_packet(&opkt);
1423
1424     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1425         !ost->copy_initial_nonkeyframes)
1426         return;
1427
1428     if (pkt->pts == AV_NOPTS_VALUE) {
1429         if (!ost->frame_number && ist->pts < start_time &&
1430             !ost->copy_prior_start)
1431             return;
1432     } else {
1433         if (!ost->frame_number && pkt->pts < ist_tb_start_time &&
1434             !ost->copy_prior_start)
1435             return;
1436     }
1437
1438     if (of->recording_time != INT64_MAX &&
1439         ist->pts >= of->recording_time + start_time) {
1440         close_output_stream(ost);
1441         return;
1442     }
1443
1444     if (f->recording_time != INT64_MAX) {
1445         start_time = f->ctx->start_time;
1446         if (f->start_time != AV_NOPTS_VALUE)
1447             start_time += f->start_time;
1448         if (ist->pts >= f->recording_time + start_time) {
1449             close_output_stream(ost);
1450             return;
1451         }
1452     }
1453
1454     /* force the input stream PTS */
1455     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1456         audio_size += pkt->size;
1457     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1458         video_size += pkt->size;
1459         ost->sync_opts++;
1460     } else if (ost->st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
1461         subtitle_size += pkt->size;
1462     }
1463
1464     if (pkt->pts != AV_NOPTS_VALUE)
1465         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1466     else
1467         opkt.pts = AV_NOPTS_VALUE;
1468
1469     if (pkt->dts == AV_NOPTS_VALUE)
1470         opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
1471     else
1472         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1473     opkt.dts -= ost_tb_start_time;
1474
1475     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && pkt->dts != AV_NOPTS_VALUE) {
1476         int duration = av_get_audio_frame_duration(ist->st->codec, pkt->size);
1477         if(!duration)
1478             duration = ist->st->codec->frame_size;
1479         opkt.dts = opkt.pts = av_rescale_delta(ist->st->time_base, pkt->dts,
1480                                                (AVRational){1, ist->st->codec->sample_rate}, duration, &ist->filter_in_rescale_delta_last,
1481                                                ost->st->time_base) - ost_tb_start_time;
1482     }
1483
1484     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1485     opkt.flags    = pkt->flags;
1486
1487     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1488     if (  ost->st->codec->codec_id != AV_CODEC_ID_H264
1489        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG1VIDEO
1490        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG2VIDEO
1491        && ost->st->codec->codec_id != AV_CODEC_ID_VC1
1492        ) {
1493         if (av_parser_change(ost->parser, ost->st->codec,
1494                              &opkt.data, &opkt.size,
1495                              pkt->data, pkt->size,
1496                              pkt->flags & AV_PKT_FLAG_KEY)) {
1497             opkt.buf = av_buffer_create(opkt.data, opkt.size, av_buffer_default_free, NULL, 0);
1498             if (!opkt.buf)
1499                 exit_program(1);
1500         }
1501     } else {
1502         opkt.data = pkt->data;
1503         opkt.size = pkt->size;
1504     }
1505     av_copy_packet_side_data(&opkt, pkt);
1506
1507     if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (of->ctx->oformat->flags & AVFMT_RAWPICTURE)) {
1508         /* store AVPicture in AVPacket, as expected by the output format */
1509         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1510         opkt.data = (uint8_t *)&pict;
1511         opkt.size = sizeof(AVPicture);
1512         opkt.flags |= AV_PKT_FLAG_KEY;
1513     }
1514
1515     write_frame(of->ctx, &opkt, ost);
1516     ost->st->codec->frame_number++;
1517 }
1518
1519 int guess_input_channel_layout(InputStream *ist)
1520 {
1521     AVCodecContext *dec = ist->st->codec;
1522
1523     if (!dec->channel_layout) {
1524         char layout_name[256];
1525
1526         if (dec->channels > ist->guess_layout_max)
1527             return 0;
1528         dec->channel_layout = av_get_default_channel_layout(dec->channels);
1529         if (!dec->channel_layout)
1530             return 0;
1531         av_get_channel_layout_string(layout_name, sizeof(layout_name),
1532                                      dec->channels, dec->channel_layout);
1533         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for  Input Stream "
1534                "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
1535     }
1536     return 1;
1537 }
1538
1539 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1540 {
1541     AVFrame *decoded_frame, *f;
1542     AVCodecContext *avctx = ist->st->codec;
1543     int i, ret, err = 0, resample_changed;
1544     AVRational decoded_frame_tb;
1545
1546     if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
1547         return AVERROR(ENOMEM);
1548     if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1549         return AVERROR(ENOMEM);
1550     decoded_frame = ist->decoded_frame;
1551
1552     update_benchmark(NULL);
1553     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1554     update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
1555
1556     if (ret >= 0 && avctx->sample_rate <= 0) {
1557         av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
1558         ret = AVERROR_INVALIDDATA;
1559     }
1560
1561     if (*got_output || ret<0 || pkt->size)
1562         decode_error_stat[ret<0] ++;
1563
1564     if (!*got_output || ret < 0) {
1565         if (!pkt->size) {
1566             for (i = 0; i < ist->nb_filters; i++)
1567 #if 1
1568                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1569 #else
1570                 av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
1571 #endif
1572         }
1573         return ret;
1574     }
1575
1576 #if 1
1577     /* increment next_dts to use for the case where the input stream does not
1578        have timestamps or there are multiple frames in the packet */
1579     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1580                      avctx->sample_rate;
1581     ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1582                      avctx->sample_rate;
1583 #endif
1584
1585     resample_changed = ist->resample_sample_fmt     != decoded_frame->format         ||
1586                        ist->resample_channels       != avctx->channels               ||
1587                        ist->resample_channel_layout != decoded_frame->channel_layout ||
1588                        ist->resample_sample_rate    != decoded_frame->sample_rate;
1589     if (resample_changed) {
1590         char layout1[64], layout2[64];
1591
1592         if (!guess_input_channel_layout(ist)) {
1593             av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
1594                    "layout for Input Stream #%d.%d\n", ist->file_index,
1595                    ist->st->index);
1596             exit_program(1);
1597         }
1598         decoded_frame->channel_layout = avctx->channel_layout;
1599
1600         av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
1601                                      ist->resample_channel_layout);
1602         av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
1603                                      decoded_frame->channel_layout);
1604
1605         av_log(NULL, AV_LOG_INFO,
1606                "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",
1607                ist->file_index, ist->st->index,
1608                ist->resample_sample_rate,  av_get_sample_fmt_name(ist->resample_sample_fmt),
1609                ist->resample_channels, layout1,
1610                decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
1611                avctx->channels, layout2);
1612
1613         ist->resample_sample_fmt     = decoded_frame->format;
1614         ist->resample_sample_rate    = decoded_frame->sample_rate;
1615         ist->resample_channel_layout = decoded_frame->channel_layout;
1616         ist->resample_channels       = avctx->channels;
1617
1618         for (i = 0; i < nb_filtergraphs; i++)
1619             if (ist_in_filtergraph(filtergraphs[i], ist)) {
1620                 FilterGraph *fg = filtergraphs[i];
1621                 int j;
1622                 if (configure_filtergraph(fg) < 0) {
1623                     av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1624                     exit_program(1);
1625                 }
1626                 for (j = 0; j < fg->nb_outputs; j++) {
1627                     OutputStream *ost = fg->outputs[j]->ost;
1628                     if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
1629                         !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
1630                         av_buffersink_set_frame_size(ost->filter->filter,
1631                                                      ost->st->codec->frame_size);
1632                 }
1633             }
1634     }
1635
1636     /* if the decoder provides a pts, use it instead of the last packet pts.
1637        the decoder could be delaying output by a packet or more. */
1638     if (decoded_frame->pts != AV_NOPTS_VALUE) {
1639         ist->dts = ist->next_dts = ist->pts = ist->next_pts = av_rescale_q(decoded_frame->pts, avctx->time_base, AV_TIME_BASE_Q);
1640         decoded_frame_tb   = avctx->time_base;
1641     } else if (decoded_frame->pkt_pts != AV_NOPTS_VALUE) {
1642         decoded_frame->pts = decoded_frame->pkt_pts;
1643         pkt->pts           = AV_NOPTS_VALUE;
1644         decoded_frame_tb   = ist->st->time_base;
1645     } else if (pkt->pts != AV_NOPTS_VALUE) {
1646         decoded_frame->pts = pkt->pts;
1647         pkt->pts           = AV_NOPTS_VALUE;
1648         decoded_frame_tb   = ist->st->time_base;
1649     }else {
1650         decoded_frame->pts = ist->dts;
1651         decoded_frame_tb   = AV_TIME_BASE_Q;
1652     }
1653     if (decoded_frame->pts != AV_NOPTS_VALUE)
1654         decoded_frame->pts = av_rescale_delta(decoded_frame_tb, decoded_frame->pts,
1655                                               (AVRational){1, ist->st->codec->sample_rate}, decoded_frame->nb_samples, &ist->filter_in_rescale_delta_last,
1656                                               (AVRational){1, ist->st->codec->sample_rate});
1657     for (i = 0; i < ist->nb_filters; i++) {
1658         if (i < ist->nb_filters - 1) {
1659             f = ist->filter_frame;
1660             err = av_frame_ref(f, decoded_frame);
1661             if (err < 0)
1662                 break;
1663         } else
1664             f = decoded_frame;
1665         err = av_buffersrc_add_frame_flags(ist->filters[i]->filter, f,
1666                                      AV_BUFFERSRC_FLAG_PUSH);
1667         if (err == AVERROR_EOF)
1668             err = 0; /* ignore */
1669         if (err < 0)
1670             break;
1671     }
1672     decoded_frame->pts = AV_NOPTS_VALUE;
1673
1674     av_frame_unref(ist->filter_frame);
1675     av_frame_unref(decoded_frame);
1676     return err < 0 ? err : ret;
1677 }
1678
1679 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
1680 {
1681     AVFrame *decoded_frame, *f;
1682     int i, ret = 0, err = 0, resample_changed;
1683     int64_t best_effort_timestamp;
1684     AVRational *frame_sample_aspect;
1685
1686     if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
1687         return AVERROR(ENOMEM);
1688     if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1689         return AVERROR(ENOMEM);
1690     decoded_frame = ist->decoded_frame;
1691     pkt->dts  = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
1692
1693     update_benchmark(NULL);
1694     ret = avcodec_decode_video2(ist->st->codec,
1695                                 decoded_frame, got_output, pkt);
1696     update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
1697
1698     if (*got_output || ret<0 || pkt->size)
1699         decode_error_stat[ret<0] ++;
1700
1701     if (!*got_output || ret < 0) {
1702         if (!pkt->size) {
1703             for (i = 0; i < ist->nb_filters; i++)
1704 #if 1
1705                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1706 #else
1707                 av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
1708 #endif
1709         }
1710         return ret;
1711     }
1712
1713     if(ist->top_field_first>=0)
1714         decoded_frame->top_field_first = ist->top_field_first;
1715
1716     if (ist->hwaccel_retrieve_data && decoded_frame->format == ist->hwaccel_pix_fmt) {
1717         err = ist->hwaccel_retrieve_data(ist->st->codec, decoded_frame);
1718         if (err < 0)
1719             goto fail;
1720     }
1721     ist->hwaccel_retrieved_pix_fmt = decoded_frame->format;
1722
1723     best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
1724     if(best_effort_timestamp != AV_NOPTS_VALUE)
1725         ist->next_pts = ist->pts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);
1726
1727     if (debug_ts) {
1728         av_log(NULL, AV_LOG_INFO, "decoder -> ist_index:%d type:video "
1729                 "frame_pts:%s frame_pts_time:%s best_effort_ts:%"PRId64" best_effort_ts_time:%s keyframe:%d frame_type:%d \n",
1730                 ist->st->index, av_ts2str(decoded_frame->pts),
1731                 av_ts2timestr(decoded_frame->pts, &ist->st->time_base),
1732                 best_effort_timestamp,
1733                 av_ts2timestr(best_effort_timestamp, &ist->st->time_base),
1734                 decoded_frame->key_frame, decoded_frame->pict_type);
1735     }
1736
1737     pkt->size = 0;
1738
1739     if (ist->st->sample_aspect_ratio.num)
1740         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1741
1742     resample_changed = ist->resample_width   != decoded_frame->width  ||
1743                        ist->resample_height  != decoded_frame->height ||
1744                        ist->resample_pix_fmt != decoded_frame->format;
1745     if (resample_changed) {
1746         av_log(NULL, AV_LOG_INFO,
1747                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1748                ist->file_index, ist->st->index,
1749                ist->resample_width,  ist->resample_height,  av_get_pix_fmt_name(ist->resample_pix_fmt),
1750                decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
1751
1752         ist->resample_width   = decoded_frame->width;
1753         ist->resample_height  = decoded_frame->height;
1754         ist->resample_pix_fmt = decoded_frame->format;
1755
1756         for (i = 0; i < nb_filtergraphs; i++) {
1757             if (ist_in_filtergraph(filtergraphs[i], ist) && ist->reinit_filters &&
1758                 configure_filtergraph(filtergraphs[i]) < 0) {
1759                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1760                 exit_program(1);
1761             }
1762         }
1763     }
1764
1765     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
1766     for (i = 0; i < ist->nb_filters; i++) {
1767         if (!frame_sample_aspect->num)
1768             *frame_sample_aspect = ist->st->sample_aspect_ratio;
1769
1770         if (i < ist->nb_filters - 1) {
1771             f = ist->filter_frame;
1772             err = av_frame_ref(f, decoded_frame);
1773             if (err < 0)
1774                 break;
1775         } else
1776             f = decoded_frame;
1777         ret = av_buffersrc_add_frame_flags(ist->filters[i]->filter, f, AV_BUFFERSRC_FLAG_PUSH);
1778         if (ret == AVERROR_EOF) {
1779             ret = 0; /* ignore */
1780         } else if (ret < 0) {
1781             av_log(NULL, AV_LOG_FATAL,
1782                    "Failed to inject frame into filter network: %s\n", av_err2str(ret));
1783             exit_program(1);
1784         }
1785     }
1786
1787 fail:
1788     av_frame_unref(ist->filter_frame);
1789     av_frame_unref(decoded_frame);
1790     return err < 0 ? err : ret;
1791 }
1792
1793 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1794 {
1795     AVSubtitle subtitle;
1796     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
1797                                           &subtitle, got_output, pkt);
1798
1799     if (*got_output || ret<0 || pkt->size)
1800         decode_error_stat[ret<0] ++;
1801
1802     if (ret < 0 || !*got_output) {
1803         if (!pkt->size)
1804             sub2video_flush(ist);
1805         return ret;
1806     }
1807
1808     if (ist->fix_sub_duration) {
1809         int end = 1;
1810         if (ist->prev_sub.got_output) {
1811             end = av_rescale(subtitle.pts - ist->prev_sub.subtitle.pts,
1812                              1000, AV_TIME_BASE);
1813             if (end < ist->prev_sub.subtitle.end_display_time) {
1814                 av_log(ist->st->codec, AV_LOG_DEBUG,
1815                        "Subtitle duration reduced from %d to %d%s\n",
1816                        ist->prev_sub.subtitle.end_display_time, end,
1817                        end <= 0 ? ", dropping it" : "");
1818                 ist->prev_sub.subtitle.end_display_time = end;
1819             }
1820         }
1821         FFSWAP(int,        *got_output, ist->prev_sub.got_output);
1822         FFSWAP(int,        ret,         ist->prev_sub.ret);
1823         FFSWAP(AVSubtitle, subtitle,    ist->prev_sub.subtitle);
1824         if (end <= 0)
1825             goto out;
1826     }
1827
1828     if (!*got_output)
1829         return ret;
1830
1831     sub2video_update(ist, &subtitle);
1832
1833     if (!subtitle.num_rects)
1834         goto out;
1835
1836     for (i = 0; i < nb_output_streams; i++) {
1837         OutputStream *ost = output_streams[i];
1838
1839         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1840             continue;
1841
1842         do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle);
1843     }
1844
1845 out:
1846     avsubtitle_free(&subtitle);
1847     return ret;
1848 }
1849
1850 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1851 static int output_packet(InputStream *ist, const AVPacket *pkt)
1852 {
1853     int ret = 0, i;
1854     int got_output = 0;
1855
1856     AVPacket avpkt;
1857     if (!ist->saw_first_ts) {
1858         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;
1859         ist->pts = 0;
1860         if (pkt != NULL && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
1861             ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1862             ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
1863         }
1864         ist->saw_first_ts = 1;
1865     }
1866
1867     if (ist->next_dts == AV_NOPTS_VALUE)
1868         ist->next_dts = ist->dts;
1869     if (ist->next_pts == AV_NOPTS_VALUE)
1870         ist->next_pts = ist->pts;
1871
1872     if (pkt == NULL) {
1873         /* EOF handling */
1874         av_init_packet(&avpkt);
1875         avpkt.data = NULL;
1876         avpkt.size = 0;
1877         goto handle_eof;
1878     } else {
1879         avpkt = *pkt;
1880     }
1881
1882     if (pkt->dts != AV_NOPTS_VALUE) {
1883         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1884         if (ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
1885             ist->next_pts = ist->pts = ist->dts;
1886     }
1887
1888     // while we have more to decode or while the decoder did output something on EOF
1889     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
1890         int duration;
1891     handle_eof:
1892
1893         ist->pts = ist->next_pts;
1894         ist->dts = ist->next_dts;
1895
1896         if (avpkt.size && avpkt.size != pkt->size) {
1897             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
1898                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1899             ist->showed_multi_packet_warning = 1;
1900         }
1901
1902         switch (ist->st->codec->codec_type) {
1903         case AVMEDIA_TYPE_AUDIO:
1904             ret = decode_audio    (ist, &avpkt, &got_output);
1905             break;
1906         case AVMEDIA_TYPE_VIDEO:
1907             ret = decode_video    (ist, &avpkt, &got_output);
1908             if (avpkt.duration) {
1909                 duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
1910             } else if(ist->st->codec->time_base.num != 0 && ist->st->codec->time_base.den != 0) {
1911                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1912                 duration = ((int64_t)AV_TIME_BASE *
1913                                 ist->st->codec->time_base.num * ticks) /
1914                                 ist->st->codec->time_base.den;
1915             } else
1916                 duration = 0;
1917
1918             if(ist->dts != AV_NOPTS_VALUE && duration) {
1919                 ist->next_dts += duration;
1920             }else
1921                 ist->next_dts = AV_NOPTS_VALUE;
1922
1923             if (got_output)
1924                 ist->next_pts += duration; //FIXME the duration is not correct in some cases
1925             break;
1926         case AVMEDIA_TYPE_SUBTITLE:
1927             ret = transcode_subtitles(ist, &avpkt, &got_output);
1928             break;
1929         default:
1930             return -1;
1931         }
1932
1933         if (ret < 0)
1934             return ret;
1935
1936         avpkt.dts=
1937         avpkt.pts= AV_NOPTS_VALUE;
1938
1939         // touch data and size only if not EOF
1940         if (pkt) {
1941             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
1942                 ret = avpkt.size;
1943             avpkt.data += ret;
1944             avpkt.size -= ret;
1945         }
1946         if (!got_output) {
1947             continue;
1948         }
1949     }
1950
1951     /* handle stream copy */
1952     if (!ist->decoding_needed) {
1953         ist->dts = ist->next_dts;
1954         switch (ist->st->codec->codec_type) {
1955         case AVMEDIA_TYPE_AUDIO:
1956             ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1957                              ist->st->codec->sample_rate;
1958             break;
1959         case AVMEDIA_TYPE_VIDEO:
1960             if (ist->framerate.num) {
1961                 // TODO: Remove work-around for c99-to-c89 issue 7
1962                 AVRational time_base_q = AV_TIME_BASE_Q;
1963                 int64_t next_dts = av_rescale_q(ist->next_dts, time_base_q, av_inv_q(ist->framerate));
1964                 ist->next_dts = av_rescale_q(next_dts + 1, av_inv_q(ist->framerate), time_base_q);
1965             } else if (pkt->duration) {
1966                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
1967             } else if(ist->st->codec->time_base.num != 0) {
1968                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
1969                 ist->next_dts += ((int64_t)AV_TIME_BASE *
1970                                   ist->st->codec->time_base.num * ticks) /
1971                                   ist->st->codec->time_base.den;
1972             }
1973             break;
1974         }
1975         ist->pts = ist->dts;
1976         ist->next_pts = ist->next_dts;
1977     }
1978     for (i = 0; pkt && i < nb_output_streams; i++) {
1979         OutputStream *ost = output_streams[i];
1980
1981         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
1982             continue;
1983
1984         do_streamcopy(ist, ost, pkt);
1985     }
1986
1987     return 0;
1988 }
1989
1990 static void print_sdp(void)
1991 {
1992     char sdp[16384];
1993     int i;
1994     AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
1995
1996     if (!avc)
1997         exit_program(1);
1998     for (i = 0; i < nb_output_files; i++)
1999         avc[i] = output_files[i]->ctx;
2000
2001     av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
2002     printf("SDP:\n%s\n", sdp);
2003     fflush(stdout);
2004     av_freep(&avc);
2005 }
2006
2007 static const HWAccel *get_hwaccel(enum AVPixelFormat pix_fmt)
2008 {
2009     int i;
2010     for (i = 0; hwaccels[i].name; i++)
2011         if (hwaccels[i].pix_fmt == pix_fmt)
2012             return &hwaccels[i];
2013     return NULL;
2014 }
2015
2016 static enum AVPixelFormat get_format(AVCodecContext *s, const enum AVPixelFormat *pix_fmts)
2017 {
2018     InputStream *ist = s->opaque;
2019     const enum AVPixelFormat *p;
2020     int ret;
2021
2022     for (p = pix_fmts; *p != -1; p++) {
2023         const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(*p);
2024         const HWAccel *hwaccel;
2025
2026         if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL))
2027             break;
2028
2029         hwaccel = get_hwaccel(*p);
2030         if (!hwaccel ||
2031             (ist->active_hwaccel_id && ist->active_hwaccel_id != hwaccel->id) ||
2032             (ist->hwaccel_id != HWACCEL_AUTO && ist->hwaccel_id != hwaccel->id))
2033             continue;
2034
2035         ret = hwaccel->init(s);
2036         if (ret < 0) {
2037             if (ist->hwaccel_id == hwaccel->id) {
2038                 av_log(NULL, AV_LOG_FATAL,
2039                        "%s hwaccel requested for input stream #%d:%d, "
2040                        "but cannot be initialized.\n", hwaccel->name,
2041                        ist->file_index, ist->st->index);
2042                 exit_program(1);
2043             }
2044             continue;
2045         }
2046         ist->active_hwaccel_id = hwaccel->id;
2047         ist->hwaccel_pix_fmt   = *p;
2048         break;
2049     }
2050
2051     return *p;
2052 }
2053
2054 static int get_buffer(AVCodecContext *s, AVFrame *frame, int flags)
2055 {
2056     InputStream *ist = s->opaque;
2057
2058     if (ist->hwaccel_get_buffer && frame->format == ist->hwaccel_pix_fmt)
2059         return ist->hwaccel_get_buffer(s, frame, flags);
2060
2061     return avcodec_default_get_buffer2(s, frame, flags);
2062 }
2063
2064 static int init_input_stream(int ist_index, char *error, int error_len)
2065 {
2066     int ret;
2067     InputStream *ist = input_streams[ist_index];
2068
2069     if (ist->decoding_needed) {
2070         AVCodec *codec = ist->dec;
2071         if (!codec) {
2072             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
2073                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
2074             return AVERROR(EINVAL);
2075         }
2076
2077         ist->st->codec->opaque      = ist;
2078         ist->st->codec->get_format  = get_format;
2079         ist->st->codec->get_buffer2 = get_buffer;
2080         ist->st->codec->thread_safe_callbacks = 1;
2081
2082         av_opt_set_int(ist->st->codec, "refcounted_frames", 1, 0);
2083
2084         if (!av_dict_get(ist->opts, "threads", NULL, 0))
2085             av_dict_set(&ist->opts, "threads", "auto", 0);
2086         if ((ret = avcodec_open2(ist->st->codec, codec, &ist->opts)) < 0) {
2087             char errbuf[128];
2088             if (ret == AVERROR_EXPERIMENTAL)
2089                 abort_codec_experimental(codec, 0);
2090
2091             av_strerror(ret, errbuf, sizeof(errbuf));
2092
2093             snprintf(error, error_len,
2094                      "Error while opening decoder for input stream "
2095                      "#%d:%d : %s",
2096                      ist->file_index, ist->st->index, errbuf);
2097             return ret;
2098         }
2099         assert_avoptions(ist->opts);
2100     }
2101
2102     ist->next_pts = AV_NOPTS_VALUE;
2103     ist->next_dts = AV_NOPTS_VALUE;
2104     ist->is_start = 1;
2105
2106     return 0;
2107 }
2108
2109 static InputStream *get_input_stream(OutputStream *ost)
2110 {
2111     if (ost->source_index >= 0)
2112         return input_streams[ost->source_index];
2113     return NULL;
2114 }
2115
2116 static int compare_int64(const void *a, const void *b)
2117 {
2118     int64_t va = *(int64_t *)a, vb = *(int64_t *)b;
2119     return va < vb ? -1 : va > vb ? +1 : 0;
2120 }
2121
2122 static void parse_forced_key_frames(char *kf, OutputStream *ost,
2123                                     AVCodecContext *avctx)
2124 {
2125     char *p;
2126     int n = 1, i, size, index = 0;
2127     int64_t t, *pts;
2128
2129     for (p = kf; *p; p++)
2130         if (*p == ',')
2131             n++;
2132     size = n;
2133     pts = av_malloc(sizeof(*pts) * size);
2134     if (!pts) {
2135         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
2136         exit_program(1);
2137     }
2138
2139     p = kf;
2140     for (i = 0; i < n; i++) {
2141         char *next = strchr(p, ',');
2142
2143         if (next)
2144             *next++ = 0;
2145
2146         if (!memcmp(p, "chapters", 8)) {
2147
2148             AVFormatContext *avf = output_files[ost->file_index]->ctx;
2149             int j;
2150
2151             if (avf->nb_chapters > INT_MAX - size ||
2152                 !(pts = av_realloc_f(pts, size += avf->nb_chapters - 1,
2153                                      sizeof(*pts)))) {
2154                 av_log(NULL, AV_LOG_FATAL,
2155                        "Could not allocate forced key frames array.\n");
2156                 exit_program(1);
2157             }
2158             t = p[8] ? parse_time_or_die("force_key_frames", p + 8, 1) : 0;
2159             t = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
2160
2161             for (j = 0; j < avf->nb_chapters; j++) {
2162                 AVChapter *c = avf->chapters[j];
2163                 av_assert1(index < size);
2164                 pts[index++] = av_rescale_q(c->start, c->time_base,
2165                                             avctx->time_base) + t;
2166             }
2167
2168         } else {
2169
2170             t = parse_time_or_die("force_key_frames", p, 1);
2171             av_assert1(index < size);
2172             pts[index++] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
2173
2174         }
2175
2176         p = next;
2177     }
2178
2179     av_assert0(index == size);
2180     qsort(pts, size, sizeof(*pts), compare_int64);
2181     ost->forced_kf_count = size;
2182     ost->forced_kf_pts   = pts;
2183 }
2184
2185 static void report_new_stream(int input_index, AVPacket *pkt)
2186 {
2187     InputFile *file = input_files[input_index];
2188     AVStream *st = file->ctx->streams[pkt->stream_index];
2189
2190     if (pkt->stream_index < file->nb_streams_warn)
2191         return;
2192     av_log(file->ctx, AV_LOG_WARNING,
2193            "New %s stream %d:%d at pos:%"PRId64" and DTS:%ss\n",
2194            av_get_media_type_string(st->codec->codec_type),
2195            input_index, pkt->stream_index,
2196            pkt->pos, av_ts2timestr(pkt->dts, &st->time_base));
2197     file->nb_streams_warn = pkt->stream_index + 1;
2198 }
2199
2200 static int transcode_init(void)
2201 {
2202     int ret = 0, i, j, k;
2203     AVFormatContext *oc;
2204     AVCodecContext *codec;
2205     OutputStream *ost;
2206     InputStream *ist;
2207     char error[1024];
2208     int want_sdp = 1;
2209
2210     for (i = 0; i < nb_filtergraphs; i++) {
2211         FilterGraph *fg = filtergraphs[i];
2212         for (j = 0; j < fg->nb_outputs; j++) {
2213             OutputFilter *ofilter = fg->outputs[j];
2214             if (!ofilter->ost || ofilter->ost->source_index >= 0)
2215                 continue;
2216             if (fg->nb_inputs != 1)
2217                 continue;
2218             for (k = nb_input_streams-1; k >= 0 ; k--)
2219                 if (fg->inputs[0]->ist == input_streams[k])
2220                     break;
2221             ofilter->ost->source_index = k;
2222         }
2223     }
2224
2225     /* init framerate emulation */
2226     for (i = 0; i < nb_input_files; i++) {
2227         InputFile *ifile = input_files[i];
2228         if (ifile->rate_emu)
2229             for (j = 0; j < ifile->nb_streams; j++)
2230                 input_streams[j + ifile->ist_index]->start = av_gettime();
2231     }
2232
2233     /* output stream init */
2234     for (i = 0; i < nb_output_files; i++) {
2235         oc = output_files[i]->ctx;
2236         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2237             av_dump_format(oc, i, oc->filename, 1);
2238             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2239             return AVERROR(EINVAL);
2240         }
2241     }
2242
2243     /* init complex filtergraphs */
2244     for (i = 0; i < nb_filtergraphs; i++)
2245         if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
2246             return ret;
2247
2248     /* for each output stream, we compute the right encoding parameters */
2249     for (i = 0; i < nb_output_streams; i++) {
2250         AVCodecContext *icodec = NULL;
2251         ost = output_streams[i];
2252         oc  = output_files[ost->file_index]->ctx;
2253         ist = get_input_stream(ost);
2254
2255         if (ost->attachment_filename)
2256             continue;
2257
2258         codec  = ost->st->codec;
2259
2260         if (ist) {
2261             icodec = ist->st->codec;
2262
2263             ost->st->disposition          = ist->st->disposition;
2264             codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
2265             codec->chroma_sample_location = icodec->chroma_sample_location;
2266         } else {
2267             for (j=0; j<oc->nb_streams; j++) {
2268                 AVStream *st = oc->streams[j];
2269                 if (st != ost->st && st->codec->codec_type == codec->codec_type)
2270                     break;
2271             }
2272             if (j == oc->nb_streams)
2273                 if (codec->codec_type == AVMEDIA_TYPE_AUDIO || codec->codec_type == AVMEDIA_TYPE_VIDEO)
2274                     ost->st->disposition = AV_DISPOSITION_DEFAULT;
2275         }
2276
2277         if (ost->stream_copy) {
2278             AVRational sar;
2279             uint64_t extra_size;
2280
2281             av_assert0(ist && !ost->filter);
2282
2283             extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2284
2285             if (extra_size > INT_MAX) {
2286                 return AVERROR(EINVAL);
2287             }
2288
2289             /* if stream_copy is selected, no need to decode or encode */
2290             codec->codec_id   = icodec->codec_id;
2291             codec->codec_type = icodec->codec_type;
2292
2293             if (!codec->codec_tag) {
2294                 unsigned int codec_tag;
2295                 if (!oc->oformat->codec_tag ||
2296                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2297                      !av_codec_get_tag2(oc->oformat->codec_tag, icodec->codec_id, &codec_tag))
2298                     codec->codec_tag = icodec->codec_tag;
2299             }
2300
2301             codec->bit_rate       = icodec->bit_rate;
2302             codec->rc_max_rate    = icodec->rc_max_rate;
2303             codec->rc_buffer_size = icodec->rc_buffer_size;
2304             codec->field_order    = icodec->field_order;
2305             codec->extradata      = av_mallocz(extra_size);
2306             if (!codec->extradata) {
2307                 return AVERROR(ENOMEM);
2308             }
2309             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2310             codec->extradata_size= icodec->extradata_size;
2311             codec->bits_per_coded_sample  = icodec->bits_per_coded_sample;
2312
2313             codec->time_base = ist->st->time_base;
2314             /*
2315              * Avi is a special case here because it supports variable fps but
2316              * having the fps and timebase differe significantly adds quite some
2317              * overhead
2318              */
2319             if(!strcmp(oc->oformat->name, "avi")) {
2320                 if ( copy_tb<0 && av_q2d(ist->st->r_frame_rate) >= av_q2d(ist->st->avg_frame_rate)
2321                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(ist->st->time_base)
2322                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(icodec->time_base)
2323                                && av_q2d(ist->st->time_base) < 1.0/500 && av_q2d(icodec->time_base) < 1.0/500
2324                      || copy_tb==2){
2325                     codec->time_base.num = ist->st->r_frame_rate.den;
2326                     codec->time_base.den = 2*ist->st->r_frame_rate.num;
2327                     codec->ticks_per_frame = 2;
2328                 } else if (   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2329                                  && av_q2d(ist->st->time_base) < 1.0/500
2330                     || copy_tb==0){
2331                     codec->time_base = icodec->time_base;
2332                     codec->time_base.num *= icodec->ticks_per_frame;
2333                     codec->time_base.den *= 2;
2334                     codec->ticks_per_frame = 2;
2335                 }
2336             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2337                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2338                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2339                       && strcmp(oc->oformat->name, "f4v")
2340             ) {
2341                 if(   copy_tb<0 && icodec->time_base.den
2342                                 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
2343                                 && av_q2d(ist->st->time_base) < 1.0/500
2344                    || copy_tb==0){
2345                     codec->time_base = icodec->time_base;
2346                     codec->time_base.num *= icodec->ticks_per_frame;
2347                 }
2348             }
2349             if (   codec->codec_tag == AV_RL32("tmcd")
2350                 && icodec->time_base.num < icodec->time_base.den
2351                 && icodec->time_base.num > 0
2352                 && 121LL*icodec->time_base.num > icodec->time_base.den) {
2353                 codec->time_base = icodec->time_base;
2354             }
2355
2356             if (ist && !ost->frame_rate.num)
2357                 ost->frame_rate = ist->framerate;
2358             if(ost->frame_rate.num)
2359                 codec->time_base = av_inv_q(ost->frame_rate);
2360
2361             av_reduce(&codec->time_base.num, &codec->time_base.den,
2362                         codec->time_base.num, codec->time_base.den, INT_MAX);
2363
2364             ost->parser = av_parser_init(codec->codec_id);
2365
2366             switch (codec->codec_type) {
2367             case AVMEDIA_TYPE_AUDIO:
2368                 if (audio_volume != 256) {
2369                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2370                     exit_program(1);
2371                 }
2372                 codec->channel_layout     = icodec->channel_layout;
2373                 codec->sample_rate        = icodec->sample_rate;
2374                 codec->channels           = icodec->channels;
2375                 codec->frame_size         = icodec->frame_size;
2376                 codec->audio_service_type = icodec->audio_service_type;
2377                 codec->block_align        = icodec->block_align;
2378                 if((codec->block_align == 1 || codec->block_align == 1152 || codec->block_align == 576) && codec->codec_id == AV_CODEC_ID_MP3)
2379                     codec->block_align= 0;
2380                 if(codec->codec_id == AV_CODEC_ID_AC3)
2381                     codec->block_align= 0;
2382                 break;
2383             case AVMEDIA_TYPE_VIDEO:
2384                 codec->pix_fmt            = icodec->pix_fmt;
2385                 codec->width              = icodec->width;
2386                 codec->height             = icodec->height;
2387                 codec->has_b_frames       = icodec->has_b_frames;
2388                 if (ost->frame_aspect_ratio.num) { // overridden by the -aspect cli option
2389                     sar =
2390                         av_mul_q(ost->frame_aspect_ratio,
2391                                  (AVRational){ codec->height, codec->width });
2392                     av_log(NULL, AV_LOG_WARNING, "Overriding aspect ratio "
2393                            "with stream copy may produce invalid files\n");
2394                 }
2395                 else if (ist->st->sample_aspect_ratio.num)
2396                     sar = ist->st->sample_aspect_ratio;
2397                 else
2398                     sar = icodec->sample_aspect_ratio;
2399                 ost->st->sample_aspect_ratio = codec->sample_aspect_ratio = sar;
2400                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2401                 break;
2402             case AVMEDIA_TYPE_SUBTITLE:
2403                 codec->width  = icodec->width;
2404                 codec->height = icodec->height;
2405                 break;
2406             case AVMEDIA_TYPE_DATA:
2407             case AVMEDIA_TYPE_ATTACHMENT:
2408                 break;
2409             default:
2410                 abort();
2411             }
2412         } else {
2413             if (!ost->enc)
2414                 ost->enc = avcodec_find_encoder(codec->codec_id);
2415             if (!ost->enc) {
2416                 /* should only happen when a default codec is not present. */
2417                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
2418                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2419                 ret = AVERROR(EINVAL);
2420                 goto dump_format;
2421             }
2422
2423             if (ist)
2424                 ist->decoding_needed++;
2425             ost->encoding_needed = 1;
2426
2427             if (!ost->filter &&
2428                 (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2429                  codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
2430                     FilterGraph *fg;
2431                     fg = init_simple_filtergraph(ist, ost);
2432                     if (configure_filtergraph(fg)) {
2433                         av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2434                         exit_program(1);
2435                     }
2436             }
2437
2438             if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2439                 if (ost->filter && !ost->frame_rate.num)
2440                     ost->frame_rate = av_buffersink_get_frame_rate(ost->filter->filter);
2441                 if (ist && !ost->frame_rate.num)
2442                     ost->frame_rate = ist->framerate;
2443                 if (ist && !ost->frame_rate.num)
2444                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25, 1};
2445 //                    ost->frame_rate = ist->st->avg_frame_rate.num ? ist->st->avg_frame_rate : (AVRational){25, 1};
2446                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2447                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2448                     ost->frame_rate = ost->enc->supported_framerates[idx];
2449                 }
2450             }
2451
2452             switch (codec->codec_type) {
2453             case AVMEDIA_TYPE_AUDIO:
2454                 codec->sample_fmt     = ost->filter->filter->inputs[0]->format;
2455                 codec->sample_rate    = ost->filter->filter->inputs[0]->sample_rate;
2456                 codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
2457                 codec->channels       = avfilter_link_get_channels(ost->filter->filter->inputs[0]);
2458                 codec->time_base      = (AVRational){ 1, codec->sample_rate };
2459                 break;
2460             case AVMEDIA_TYPE_VIDEO:
2461                 codec->time_base = av_inv_q(ost->frame_rate);
2462                 if (ost->filter && !(codec->time_base.num && codec->time_base.den))
2463                     codec->time_base = ost->filter->filter->inputs[0]->time_base;
2464                 if (   av_q2d(codec->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
2465                    && (video_sync_method == VSYNC_CFR || video_sync_method == VSYNC_VSCFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
2466                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
2467                                                "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
2468                 }
2469                 for (j = 0; j < ost->forced_kf_count; j++)
2470                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2471                                                          AV_TIME_BASE_Q,
2472                                                          codec->time_base);
2473
2474                 codec->width  = ost->filter->filter->inputs[0]->w;
2475                 codec->height = ost->filter->filter->inputs[0]->h;
2476                 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
2477                     ost->frame_aspect_ratio.num ? // overridden by the -aspect cli option
2478                     av_mul_q(ost->frame_aspect_ratio, (AVRational){ codec->height, codec->width }) :
2479                     ost->filter->filter->inputs[0]->sample_aspect_ratio;
2480                 if (!strncmp(ost->enc->name, "libx264", 7) &&
2481                     codec->pix_fmt == AV_PIX_FMT_NONE &&
2482                     ost->filter->filter->inputs[0]->format != AV_PIX_FMT_YUV420P)
2483                     av_log(NULL, AV_LOG_WARNING,
2484                            "No pixel format specified, %s for H.264 encoding chosen.\n"
2485                            "Use -pix_fmt yuv420p for compatibility with outdated media players.\n",
2486                            av_get_pix_fmt_name(ost->filter->filter->inputs[0]->format));
2487                 if (!strncmp(ost->enc->name, "mpeg2video", 10) &&
2488                     codec->pix_fmt == AV_PIX_FMT_NONE &&
2489                     ost->filter->filter->inputs[0]->format != AV_PIX_FMT_YUV420P)
2490                     av_log(NULL, AV_LOG_WARNING,
2491                            "No pixel format specified, %s for MPEG-2 encoding chosen.\n"
2492                            "Use -pix_fmt yuv420p for compatibility with outdated media players.\n",
2493                            av_get_pix_fmt_name(ost->filter->filter->inputs[0]->format));
2494                 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
2495
2496                 if (!icodec ||
2497                     codec->width   != icodec->width  ||
2498                     codec->height  != icodec->height ||
2499                     codec->pix_fmt != icodec->pix_fmt) {
2500                     codec->bits_per_raw_sample = frame_bits_per_raw_sample;
2501                 }
2502
2503                 if (ost->forced_keyframes) {
2504                     if (!strncmp(ost->forced_keyframes, "expr:", 5)) {
2505                         ret = av_expr_parse(&ost->forced_keyframes_pexpr, ost->forced_keyframes+5,
2506                                             forced_keyframes_const_names, NULL, NULL, NULL, NULL, 0, NULL);
2507                         if (ret < 0) {
2508                             av_log(NULL, AV_LOG_ERROR,
2509                                    "Invalid force_key_frames expression '%s'\n", ost->forced_keyframes+5);
2510                             return ret;
2511                         }
2512                         ost->forced_keyframes_expr_const_values[FKF_N] = 0;
2513                         ost->forced_keyframes_expr_const_values[FKF_N_FORCED] = 0;
2514                         ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] = NAN;
2515                         ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] = NAN;
2516                     } else {
2517                         parse_forced_key_frames(ost->forced_keyframes, ost, ost->st->codec);
2518                     }
2519                 }
2520                 break;
2521             case AVMEDIA_TYPE_SUBTITLE:
2522                 codec->time_base = (AVRational){1, 1000};
2523                 if (!codec->width) {
2524                     codec->width     = input_streams[ost->source_index]->st->codec->width;
2525                     codec->height    = input_streams[ost->source_index]->st->codec->height;
2526                 }
2527                 break;
2528             default:
2529                 abort();
2530                 break;
2531             }
2532             /* two pass mode */
2533             if (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
2534                 char logfilename[1024];
2535                 FILE *f;
2536
2537                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2538                          ost->logfile_prefix ? ost->logfile_prefix :
2539                                                DEFAULT_PASS_LOGFILENAME_PREFIX,
2540                          i);
2541                 if (!strcmp(ost->enc->name, "libx264")) {
2542                     av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
2543                 } else {
2544                     if (codec->flags & CODEC_FLAG_PASS2) {
2545                         char  *logbuffer;
2546                         size_t logbuffer_size;
2547                         if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2548                             av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2549                                    logfilename);
2550                             exit_program(1);
2551                         }
2552                         codec->stats_in = logbuffer;
2553                     }
2554                     if (codec->flags & CODEC_FLAG_PASS1) {
2555                         f = av_fopen_utf8(logfilename, "wb");
2556                         if (!f) {
2557                             av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2558                                 logfilename, strerror(errno));
2559                             exit_program(1);
2560                         }
2561                         ost->logfile = f;
2562                     }
2563                 }
2564             }
2565         }
2566     }
2567
2568     /* open each encoder */
2569     for (i = 0; i < nb_output_streams; i++) {
2570         ost = output_streams[i];
2571         if (ost->encoding_needed) {
2572             AVCodec      *codec = ost->enc;
2573             AVCodecContext *dec = NULL;
2574
2575             if ((ist = get_input_stream(ost)))
2576                 dec = ist->st->codec;
2577             if (dec && dec->subtitle_header) {
2578                 /* ASS code assumes this buffer is null terminated so add extra byte. */
2579                 ost->st->codec->subtitle_header = av_mallocz(dec->subtitle_header_size + 1);
2580                 if (!ost->st->codec->subtitle_header) {
2581                     ret = AVERROR(ENOMEM);
2582                     goto dump_format;
2583                 }
2584                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2585                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2586             }
2587             if (!av_dict_get(ost->opts, "threads", NULL, 0))
2588                 av_dict_set(&ost->opts, "threads", "auto", 0);
2589             if ((ret = avcodec_open2(ost->st->codec, codec, &ost->opts)) < 0) {
2590                 if (ret == AVERROR_EXPERIMENTAL)
2591                     abort_codec_experimental(codec, 1);
2592                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2593                         ost->file_index, ost->index);
2594                 goto dump_format;
2595             }
2596             if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
2597                 !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
2598                 av_buffersink_set_frame_size(ost->filter->filter,
2599                                              ost->st->codec->frame_size);
2600             assert_avoptions(ost->opts);
2601             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2602                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2603                                              " It takes bits/s as argument, not kbits/s\n");
2604             extra_size += ost->st->codec->extradata_size;
2605         } else {
2606             av_opt_set_dict(ost->st->codec, &ost->opts);
2607         }
2608     }
2609
2610     /* init input streams */
2611     for (i = 0; i < nb_input_streams; i++)
2612         if ((ret = init_input_stream(i, error, sizeof(error))) < 0) {
2613             for (i = 0; i < nb_output_streams; i++) {
2614                 ost = output_streams[i];
2615                 avcodec_close(ost->st->codec);
2616             }
2617             goto dump_format;
2618         }
2619
2620     /* discard unused programs */
2621     for (i = 0; i < nb_input_files; i++) {
2622         InputFile *ifile = input_files[i];
2623         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2624             AVProgram *p = ifile->ctx->programs[j];
2625             int discard  = AVDISCARD_ALL;
2626
2627             for (k = 0; k < p->nb_stream_indexes; k++)
2628                 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
2629                     discard = AVDISCARD_DEFAULT;
2630                     break;
2631                 }
2632             p->discard = discard;
2633         }
2634     }
2635
2636     /* open files and write file headers */
2637     for (i = 0; i < nb_output_files; i++) {
2638         oc = output_files[i]->ctx;
2639         oc->interrupt_callback = int_cb;
2640         if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
2641             char errbuf[128];
2642             av_strerror(ret, errbuf, sizeof(errbuf));
2643             snprintf(error, sizeof(error),
2644                      "Could not write header for output file #%d "
2645                      "(incorrect codec parameters ?): %s",
2646                      i, errbuf);
2647             ret = AVERROR(EINVAL);
2648             goto dump_format;
2649         }
2650 //         assert_avoptions(output_files[i]->opts);
2651         if (strcmp(oc->oformat->name, "rtp")) {
2652             want_sdp = 0;
2653         }
2654     }
2655
2656  dump_format:
2657     /* dump the file output parameters - cannot be done before in case
2658        of stream copy */
2659     for (i = 0; i < nb_output_files; i++) {
2660         av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
2661     }
2662
2663     /* dump the stream mapping */
2664     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2665     for (i = 0; i < nb_input_streams; i++) {
2666         ist = input_streams[i];
2667
2668         for (j = 0; j < ist->nb_filters; j++) {
2669             if (ist->filters[j]->graph->graph_desc) {
2670                 av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
2671                        ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
2672                        ist->filters[j]->name);
2673                 if (nb_filtergraphs > 1)
2674                     av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
2675                 av_log(NULL, AV_LOG_INFO, "\n");
2676             }
2677         }
2678     }
2679
2680     for (i = 0; i < nb_output_streams; i++) {
2681         ost = output_streams[i];
2682
2683         if (ost->attachment_filename) {
2684             /* an attached file */
2685             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
2686                    ost->attachment_filename, ost->file_index, ost->index);
2687             continue;
2688         }
2689
2690         if (ost->filter && ost->filter->graph->graph_desc) {
2691             /* output from a complex graph */
2692             av_log(NULL, AV_LOG_INFO, "  %s", ost->filter->name);
2693             if (nb_filtergraphs > 1)
2694                 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
2695
2696             av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
2697                    ost->index, ost->enc ? ost->enc->name : "?");
2698             continue;
2699         }
2700
2701         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
2702                input_streams[ost->source_index]->file_index,
2703                input_streams[ost->source_index]->st->index,
2704                ost->file_index,
2705                ost->index);
2706         if (ost->sync_ist != input_streams[ost->source_index])
2707             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2708                    ost->sync_ist->file_index,
2709                    ost->sync_ist->st->index);
2710         if (ost->stream_copy)
2711             av_log(NULL, AV_LOG_INFO, " (copy)");
2712         else
2713             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
2714                    input_streams[ost->source_index]->dec->name : "?",
2715                    ost->enc ? ost->enc->name : "?");
2716         av_log(NULL, AV_LOG_INFO, "\n");
2717     }
2718
2719     if (ret) {
2720         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2721         return ret;
2722     }
2723
2724     if (want_sdp) {
2725         print_sdp();
2726     }
2727
2728     return 0;
2729 }
2730
2731 /* Return 1 if there remain streams where more output is wanted, 0 otherwise. */
2732 static int need_output(void)
2733 {
2734     int i;
2735
2736     for (i = 0; i < nb_output_streams; i++) {
2737         OutputStream *ost    = output_streams[i];
2738         OutputFile *of       = output_files[ost->file_index];
2739         AVFormatContext *os  = output_files[ost->file_index]->ctx;
2740
2741         if (ost->finished ||
2742             (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2743             continue;
2744         if (ost->frame_number >= ost->max_frames) {
2745             int j;
2746             for (j = 0; j < of->ctx->nb_streams; j++)
2747                 close_output_stream(output_streams[of->ost_index + j]);
2748             continue;
2749         }
2750
2751         return 1;
2752     }
2753
2754     return 0;
2755 }
2756
2757 /**
2758  * Select the output stream to process.
2759  *
2760  * @return  selected output stream, or NULL if none available
2761  */
2762 static OutputStream *choose_output(void)
2763 {
2764     int i;
2765     int64_t opts_min = INT64_MAX;
2766     OutputStream *ost_min = NULL;
2767
2768     for (i = 0; i < nb_output_streams; i++) {
2769         OutputStream *ost = output_streams[i];
2770         int64_t opts = av_rescale_q(ost->st->cur_dts, ost->st->time_base,
2771                                     AV_TIME_BASE_Q);
2772         if (!ost->unavailable && !ost->finished && opts < opts_min) {
2773             opts_min = opts;
2774             ost_min  = ost;
2775         }
2776     }
2777     return ost_min;
2778 }
2779
2780 static int check_keyboard_interaction(int64_t cur_time)
2781 {
2782     int i, ret, key;
2783     static int64_t last_time;
2784     if (received_nb_signals)
2785         return AVERROR_EXIT;
2786     /* read_key() returns 0 on EOF */
2787     if(cur_time - last_time >= 100000 && !run_as_daemon){
2788         key =  read_key();
2789         last_time = cur_time;
2790     }else
2791         key = -1;
2792     if (key == 'q')
2793         return AVERROR_EXIT;
2794     if (key == '+') av_log_set_level(av_log_get_level()+10);
2795     if (key == '-') av_log_set_level(av_log_get_level()-10);
2796     if (key == 's') qp_hist     ^= 1;
2797     if (key == 'h'){
2798         if (do_hex_dump){
2799             do_hex_dump = do_pkt_dump = 0;
2800         } else if(do_pkt_dump){
2801             do_hex_dump = 1;
2802         } else
2803             do_pkt_dump = 1;
2804         av_log_set_level(AV_LOG_DEBUG);
2805     }
2806     if (key == 'c' || key == 'C'){
2807         char buf[4096], target[64], command[256], arg[256] = {0};
2808         double time;
2809         int k, n = 0;
2810         fprintf(stderr, "\nEnter command: <target>|all <time>|-1 <command>[ <argument>]\n");
2811         i = 0;
2812         while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
2813             if (k > 0)
2814                 buf[i++] = k;
2815         buf[i] = 0;
2816         if (k > 0 &&
2817             (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
2818             av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
2819                    target, time, command, arg);
2820             for (i = 0; i < nb_filtergraphs; i++) {
2821                 FilterGraph *fg = filtergraphs[i];
2822                 if (fg->graph) {
2823                     if (time < 0) {
2824                         ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
2825                                                           key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
2826                         fprintf(stderr, "Command reply for stream %d: ret:%d res:\n%s", i, ret, buf);
2827                     } else if (key == 'c') {
2828                         fprintf(stderr, "Queing commands only on filters supporting the specific command is unsupported\n");
2829                         ret = AVERROR_PATCHWELCOME;
2830                     } else {
2831                         ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
2832                     }
2833                 }
2834             }
2835         } else {
2836             av_log(NULL, AV_LOG_ERROR,
2837                    "Parse error, at least 3 arguments were expected, "
2838                    "only %d given in string '%s'\n", n, buf);
2839         }
2840     }
2841     if (key == 'd' || key == 'D'){
2842         int debug=0;
2843         if(key == 'D') {
2844             debug = input_streams[0]->st->codec->debug<<1;
2845             if(!debug) debug = 1;
2846             while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2847                 debug += debug;
2848         }else
2849             if(scanf("%d", &debug)!=1)
2850                 fprintf(stderr,"error parsing debug value\n");
2851         for(i=0;i<nb_input_streams;i++) {
2852             input_streams[i]->st->codec->debug = debug;
2853         }
2854         for(i=0;i<nb_output_streams;i++) {
2855             OutputStream *ost = output_streams[i];
2856             ost->st->codec->debug = debug;
2857         }
2858         if(debug) av_log_set_level(AV_LOG_DEBUG);
2859         fprintf(stderr,"debug=%d\n", debug);
2860     }
2861     if (key == '?'){
2862         fprintf(stderr, "key    function\n"
2863                         "?      show this help\n"
2864                         "+      increase verbosity\n"
2865                         "-      decrease verbosity\n"
2866                         "c      Send command to first matching filter supporting it\n"
2867                         "C      Send/Que command to all matching filters\n"
2868                         "D      cycle through available debug modes\n"
2869                         "h      dump packets/hex press to cycle through the 3 states\n"
2870                         "q      quit\n"
2871                         "s      Show QP histogram\n"
2872         );
2873     }
2874     return 0;
2875 }
2876
2877 #if HAVE_PTHREADS
2878 static void *input_thread(void *arg)
2879 {
2880     InputFile *f = arg;
2881     int ret = 0;
2882
2883     while (!transcoding_finished && ret >= 0) {
2884         AVPacket pkt;
2885         ret = av_read_frame(f->ctx, &pkt);
2886
2887         if (ret == AVERROR(EAGAIN)) {
2888             av_usleep(10000);
2889             ret = 0;
2890             continue;
2891         } else if (ret < 0)
2892             break;
2893
2894         pthread_mutex_lock(&f->fifo_lock);
2895         while (!av_fifo_space(f->fifo))
2896             pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
2897
2898         av_dup_packet(&pkt);
2899         av_fifo_generic_write(f->fifo, &pkt, sizeof(pkt), NULL);
2900
2901         pthread_mutex_unlock(&f->fifo_lock);
2902     }
2903
2904     f->finished = 1;
2905     return NULL;
2906 }
2907
2908 static void free_input_threads(void)
2909 {
2910     int i;
2911
2912     if (nb_input_files == 1)
2913         return;
2914
2915     transcoding_finished = 1;
2916
2917     for (i = 0; i < nb_input_files; i++) {
2918         InputFile *f = input_files[i];
2919         AVPacket pkt;
2920
2921         if (!f->fifo || f->joined)
2922             continue;
2923
2924         pthread_mutex_lock(&f->fifo_lock);
2925         while (av_fifo_size(f->fifo)) {
2926             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2927             av_free_packet(&pkt);
2928         }
2929         pthread_cond_signal(&f->fifo_cond);
2930         pthread_mutex_unlock(&f->fifo_lock);
2931
2932         pthread_join(f->thread, NULL);
2933         f->joined = 1;
2934
2935         while (av_fifo_size(f->fifo)) {
2936             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2937             av_free_packet(&pkt);
2938         }
2939         av_fifo_free(f->fifo);
2940     }
2941 }
2942
2943 static int init_input_threads(void)
2944 {
2945     int i, ret;
2946
2947     if (nb_input_files == 1)
2948         return 0;
2949
2950     for (i = 0; i < nb_input_files; i++) {
2951         InputFile *f = input_files[i];
2952
2953         if (!(f->fifo = av_fifo_alloc(8*sizeof(AVPacket))))
2954             return AVERROR(ENOMEM);
2955
2956         pthread_mutex_init(&f->fifo_lock, NULL);
2957         pthread_cond_init (&f->fifo_cond, NULL);
2958
2959         if ((ret = pthread_create(&f->thread, NULL, input_thread, f)))
2960             return AVERROR(ret);
2961     }
2962     return 0;
2963 }
2964
2965 static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
2966 {
2967     int ret = 0;
2968
2969     pthread_mutex_lock(&f->fifo_lock);
2970
2971     if (av_fifo_size(f->fifo)) {
2972         av_fifo_generic_read(f->fifo, pkt, sizeof(*pkt), NULL);
2973         pthread_cond_signal(&f->fifo_cond);
2974     } else {
2975         if (f->finished)
2976             ret = AVERROR_EOF;
2977         else
2978             ret = AVERROR(EAGAIN);
2979     }
2980
2981     pthread_mutex_unlock(&f->fifo_lock);
2982
2983     return ret;
2984 }
2985 #endif
2986
2987 static int get_input_packet(InputFile *f, AVPacket *pkt)
2988 {
2989     if (f->rate_emu) {
2990         int i;
2991         for (i = 0; i < f->nb_streams; i++) {
2992             InputStream *ist = input_streams[f->ist_index + i];
2993             int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
2994             int64_t now = av_gettime() - ist->start;
2995             if (pts > now)
2996                 return AVERROR(EAGAIN);
2997         }
2998     }
2999
3000 #if HAVE_PTHREADS
3001     if (nb_input_files > 1)
3002         return get_input_packet_mt(f, pkt);
3003 #endif
3004     return av_read_frame(f->ctx, pkt);
3005 }
3006
3007 static int got_eagain(void)
3008 {
3009     int i;
3010     for (i = 0; i < nb_output_streams; i++)
3011         if (output_streams[i]->unavailable)
3012             return 1;
3013     return 0;
3014 }
3015
3016 static void reset_eagain(void)
3017 {
3018     int i;
3019     for (i = 0; i < nb_input_files; i++)
3020         input_files[i]->eagain = 0;
3021     for (i = 0; i < nb_output_streams; i++)
3022         output_streams[i]->unavailable = 0;
3023 }
3024
3025 /*
3026  * Return
3027  * - 0 -- one packet was read and processed
3028  * - AVERROR(EAGAIN) -- no packets were available for selected file,
3029  *   this function should be called again
3030  * - AVERROR_EOF -- this function should not be called again
3031  */
3032 static int process_input(int file_index)
3033 {
3034     InputFile *ifile = input_files[file_index];
3035     AVFormatContext *is;
3036     InputStream *ist;
3037     AVPacket pkt;
3038     int ret, i, j;
3039
3040     is  = ifile->ctx;
3041     ret = get_input_packet(ifile, &pkt);
3042
3043     if (ret == AVERROR(EAGAIN)) {
3044         ifile->eagain = 1;
3045         return ret;
3046     }
3047     if (ret < 0) {
3048         if (ret != AVERROR_EOF) {
3049             print_error(is->filename, ret);
3050             if (exit_on_error)
3051                 exit_program(1);
3052         }
3053         ifile->eof_reached = 1;
3054
3055         for (i = 0; i < ifile->nb_streams; i++) {
3056             ist = input_streams[ifile->ist_index + i];
3057             if (ist->decoding_needed)
3058                 output_packet(ist, NULL);
3059
3060             /* mark all outputs that don't go through lavfi as finished */
3061             for (j = 0; j < nb_output_streams; j++) {
3062                 OutputStream *ost = output_streams[j];
3063
3064                 if (ost->source_index == ifile->ist_index + i &&
3065                     (ost->stream_copy || ost->enc->type == AVMEDIA_TYPE_SUBTITLE))
3066                     close_output_stream(ost);
3067             }
3068         }
3069
3070         return AVERROR(EAGAIN);
3071     }
3072
3073     reset_eagain();
3074
3075     if (do_pkt_dump) {
3076         av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
3077                          is->streams[pkt.stream_index]);
3078     }
3079     /* the following test is needed in case new streams appear
3080        dynamically in stream : we ignore them */
3081     if (pkt.stream_index >= ifile->nb_streams) {
3082         report_new_stream(file_index, &pkt);
3083         goto discard_packet;
3084     }
3085
3086     ist = input_streams[ifile->ist_index + pkt.stream_index];
3087     if (ist->discard)
3088         goto discard_packet;
3089
3090     if (debug_ts) {
3091         av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
3092                "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",
3093                ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
3094                av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &AV_TIME_BASE_Q),
3095                av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &AV_TIME_BASE_Q),
3096                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
3097                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
3098                av_ts2str(input_files[ist->file_index]->ts_offset),
3099                av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
3100     }
3101
3102     if(!ist->wrap_correction_done && is->start_time != AV_NOPTS_VALUE && ist->st->pts_wrap_bits < 64){
3103         int64_t stime, stime2;
3104         // Correcting starttime based on the enabled streams
3105         // 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.
3106         //       so we instead do it here as part of discontinuity handling
3107         if (   ist->next_dts == AV_NOPTS_VALUE
3108             && ifile->ts_offset == -is->start_time
3109             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
3110             int64_t new_start_time = INT64_MAX;
3111             for (i=0; i<is->nb_streams; i++) {
3112                 AVStream *st = is->streams[i];
3113                 if(st->discard == AVDISCARD_ALL || st->start_time == AV_NOPTS_VALUE)
3114                     continue;
3115                 new_start_time = FFMIN(new_start_time, av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q));
3116             }
3117             if (new_start_time > is->start_time) {
3118                 av_log(is, AV_LOG_VERBOSE, "Correcting start time by %"PRId64"\n", new_start_time - is->start_time);
3119                 ifile->ts_offset = -new_start_time;
3120             }
3121         }
3122
3123         stime = av_rescale_q(is->start_time, AV_TIME_BASE_Q, ist->st->time_base);
3124         stime2= stime + (1ULL<<ist->st->pts_wrap_bits);
3125         ist->wrap_correction_done = 1;
3126
3127         if(stime2 > stime && pkt.dts != AV_NOPTS_VALUE && pkt.dts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
3128             pkt.dts -= 1ULL<<ist->st->pts_wrap_bits;
3129             ist->wrap_correction_done = 0;
3130         }
3131         if(stime2 > stime && pkt.pts != AV_NOPTS_VALUE && pkt.pts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
3132             pkt.pts -= 1ULL<<ist->st->pts_wrap_bits;
3133             ist->wrap_correction_done = 0;
3134         }
3135     }
3136
3137     if (pkt.dts != AV_NOPTS_VALUE)
3138         pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
3139     if (pkt.pts != AV_NOPTS_VALUE)
3140         pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
3141
3142     if (pkt.pts != AV_NOPTS_VALUE)
3143         pkt.pts *= ist->ts_scale;
3144     if (pkt.dts != AV_NOPTS_VALUE)
3145         pkt.dts *= ist->ts_scale;
3146
3147     if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts == AV_NOPTS_VALUE && !copy_ts
3148         && (is->iformat->flags & AVFMT_TS_DISCONT) && ifile->last_ts != AV_NOPTS_VALUE) {
3149         int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3150         int64_t delta   = pkt_dts - ifile->last_ts;
3151         if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
3152             (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
3153                 ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)){
3154             ifile->ts_offset -= delta;
3155             av_log(NULL, AV_LOG_DEBUG,
3156                    "Inter stream timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
3157                    delta, ifile->ts_offset);
3158             pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3159             if (pkt.pts != AV_NOPTS_VALUE)
3160                 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3161         }
3162     }
3163
3164     if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE &&
3165         !copy_ts) {
3166         int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3167         int64_t delta   = pkt_dts - ist->next_dts;
3168         if (is->iformat->flags & AVFMT_TS_DISCONT) {
3169         if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
3170             (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
3171                 ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
3172             pkt_dts + AV_TIME_BASE/10 < ist->pts){
3173             ifile->ts_offset -= delta;
3174             av_log(NULL, AV_LOG_DEBUG,
3175                    "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
3176                    delta, ifile->ts_offset);
3177             pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3178             if (pkt.pts != AV_NOPTS_VALUE)
3179                 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3180         }
3181         } else {
3182             if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3183                 (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
3184                ) {
3185                 av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
3186                 pkt.dts = AV_NOPTS_VALUE;
3187             }
3188             if (pkt.pts != AV_NOPTS_VALUE){
3189                 int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
3190                 delta   = pkt_pts - ist->next_dts;
3191                 if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3192                     (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
3193                    ) {
3194                     av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
3195                     pkt.pts = AV_NOPTS_VALUE;
3196                 }
3197             }
3198         }
3199     }
3200
3201     if (pkt.dts != AV_NOPTS_VALUE)
3202         ifile->last_ts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3203
3204     if (debug_ts) {
3205         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",
3206                ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
3207                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
3208                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
3209                av_ts2str(input_files[ist->file_index]->ts_offset),
3210                av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
3211     }
3212
3213     sub2video_heartbeat(ist, pkt.pts);
3214
3215     ret = output_packet(ist, &pkt);
3216     if (ret < 0) {
3217         char buf[128];
3218         av_strerror(ret, buf, sizeof(buf));
3219         av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d: %s\n",
3220                 ist->file_index, ist->st->index, buf);
3221         if (exit_on_error)
3222             exit_program(1);
3223     }
3224
3225 discard_packet:
3226     av_free_packet(&pkt);
3227
3228     return 0;
3229 }
3230
3231 /**
3232  * Perform a step of transcoding for the specified filter graph.
3233  *
3234  * @param[in]  graph     filter graph to consider
3235  * @param[out] best_ist  input stream where a frame would allow to continue
3236  * @return  0 for success, <0 for error
3237  */
3238 static int transcode_from_filter(FilterGraph *graph, InputStream **best_ist)
3239 {
3240     int i, ret;
3241     int nb_requests, nb_requests_max = 0;
3242     InputFilter *ifilter;
3243     InputStream *ist;
3244
3245     *best_ist = NULL;
3246     ret = avfilter_graph_request_oldest(graph->graph);
3247     if (ret >= 0)
3248         return reap_filters();
3249
3250     if (ret == AVERROR_EOF) {
3251         ret = reap_filters();
3252         for (i = 0; i < graph->nb_outputs; i++)
3253             close_output_stream(graph->outputs[i]->ost);
3254         return ret;
3255     }
3256     if (ret != AVERROR(EAGAIN))
3257         return ret;
3258
3259     for (i = 0; i < graph->nb_inputs; i++) {
3260         ifilter = graph->inputs[i];
3261         ist = ifilter->ist;
3262         if (input_files[ist->file_index]->eagain ||
3263             input_files[ist->file_index]->eof_reached)
3264             continue;
3265         nb_requests = av_buffersrc_get_nb_failed_requests(ifilter->filter);
3266         if (nb_requests > nb_requests_max) {
3267             nb_requests_max = nb_requests;
3268             *best_ist = ist;
3269         }
3270     }
3271
3272     if (!*best_ist)
3273         for (i = 0; i < graph->nb_outputs; i++)
3274             graph->outputs[i]->ost->unavailable = 1;
3275
3276     return 0;
3277 }
3278
3279 /**
3280  * Run a single step of transcoding.
3281  *
3282  * @return  0 for success, <0 for error
3283  */
3284 static int transcode_step(void)
3285 {
3286     OutputStream *ost;
3287     InputStream  *ist;
3288     int ret;
3289
3290     ost = choose_output();
3291     if (!ost) {
3292         if (got_eagain()) {
3293             reset_eagain();
3294             av_usleep(10000);
3295             return 0;
3296         }
3297         av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from, finishing.\n");
3298         return AVERROR_EOF;
3299     }
3300
3301     if (ost->filter) {
3302         if ((ret = transcode_from_filter(ost->filter->graph, &ist)) < 0)
3303             return ret;
3304         if (!ist)
3305             return 0;
3306     } else {
3307         av_assert0(ost->source_index >= 0);
3308         ist = input_streams[ost->source_index];
3309     }
3310
3311     ret = process_input(ist->file_index);
3312     if (ret == AVERROR(EAGAIN)) {
3313         if (input_files[ist->file_index]->eagain)
3314             ost->unavailable = 1;
3315         return 0;
3316     }
3317     if (ret < 0)
3318         return ret == AVERROR_EOF ? 0 : ret;
3319
3320     return reap_filters();
3321 }
3322
3323 /*
3324  * The following code is the main loop of the file converter
3325  */
3326 static int transcode(void)
3327 {
3328     int ret, i;
3329     AVFormatContext *os;
3330     OutputStream *ost;
3331     InputStream *ist;
3332     int64_t timer_start;
3333
3334     ret = transcode_init();
3335     if (ret < 0)
3336         goto fail;
3337
3338     if (stdin_interaction) {
3339         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
3340     }
3341
3342     timer_start = av_gettime();
3343
3344 #if HAVE_PTHREADS
3345     if ((ret = init_input_threads()) < 0)
3346         goto fail;
3347 #endif
3348
3349     while (!received_sigterm) {
3350         int64_t cur_time= av_gettime();
3351
3352         /* if 'q' pressed, exits */
3353         if (stdin_interaction)
3354             if (check_keyboard_interaction(cur_time) < 0)
3355                 break;
3356
3357         /* check if there's any stream where output is still needed */
3358         if (!need_output()) {
3359             av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
3360             break;
3361         }
3362
3363         ret = transcode_step();
3364         if (ret < 0) {
3365             if (ret == AVERROR_EOF || ret == AVERROR(EAGAIN))
3366                 continue;
3367
3368             av_log(NULL, AV_LOG_ERROR, "Error while filtering.\n");
3369             break;
3370         }
3371
3372         /* dump report by using the output first video and audio streams */
3373         print_report(0, timer_start, cur_time);
3374     }
3375 #if HAVE_PTHREADS
3376     free_input_threads();
3377 #endif
3378
3379     /* at the end of stream, we must flush the decoder buffers */
3380     for (i = 0; i < nb_input_streams; i++) {
3381         ist = input_streams[i];
3382         if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
3383             output_packet(ist, NULL);
3384         }
3385     }
3386     flush_encoders();
3387
3388     term_exit();
3389
3390     /* write the trailer if needed and close file */
3391     for (i = 0; i < nb_output_files; i++) {
3392         os = output_files[i]->ctx;
3393         av_write_trailer(os);
3394     }
3395
3396     /* dump report by using the first video and audio streams */
3397     print_report(1, timer_start, av_gettime());
3398
3399     /* close each encoder */
3400     for (i = 0; i < nb_output_streams; i++) {
3401         ost = output_streams[i];
3402         if (ost->encoding_needed) {
3403             av_freep(&ost->st->codec->stats_in);
3404             avcodec_close(ost->st->codec);
3405         }
3406     }
3407
3408     /* close each decoder */
3409     for (i = 0; i < nb_input_streams; i++) {
3410         ist = input_streams[i];
3411         if (ist->decoding_needed) {
3412             avcodec_close(ist->st->codec);
3413             if (ist->hwaccel_uninit)
3414                 ist->hwaccel_uninit(ist->st->codec);
3415         }
3416     }
3417
3418     /* finished ! */
3419     ret = 0;
3420
3421  fail:
3422 #if HAVE_PTHREADS
3423     free_input_threads();
3424 #endif
3425
3426     if (output_streams) {
3427         for (i = 0; i < nb_output_streams; i++) {
3428             ost = output_streams[i];
3429             if (ost) {
3430                 if (ost->stream_copy)
3431                     av_freep(&ost->st->codec->extradata);
3432                 if (ost->logfile) {
3433                     fclose(ost->logfile);
3434                     ost->logfile = NULL;
3435                 }
3436                 av_freep(&ost->st->codec->subtitle_header);
3437                 av_freep(&ost->forced_kf_pts);
3438                 av_freep(&ost->apad);
3439                 av_dict_free(&ost->opts);
3440                 av_dict_free(&ost->swr_opts);
3441                 av_dict_free(&ost->resample_opts);
3442             }
3443         }
3444     }
3445     return ret;
3446 }
3447
3448
3449 static int64_t getutime(void)
3450 {
3451 #if HAVE_GETRUSAGE
3452     struct rusage rusage;
3453
3454     getrusage(RUSAGE_SELF, &rusage);
3455     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
3456 #elif HAVE_GETPROCESSTIMES
3457     HANDLE proc;
3458     FILETIME c, e, k, u;
3459     proc = GetCurrentProcess();
3460     GetProcessTimes(proc, &c, &e, &k, &u);
3461     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
3462 #else
3463     return av_gettime();
3464 #endif
3465 }
3466
3467 static int64_t getmaxrss(void)
3468 {
3469 #if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
3470     struct rusage rusage;
3471     getrusage(RUSAGE_SELF, &rusage);
3472     return (int64_t)rusage.ru_maxrss * 1024;
3473 #elif HAVE_GETPROCESSMEMORYINFO
3474     HANDLE proc;
3475     PROCESS_MEMORY_COUNTERS memcounters;
3476     proc = GetCurrentProcess();
3477     memcounters.cb = sizeof(memcounters);
3478     GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
3479     return memcounters.PeakPagefileUsage;
3480 #else
3481     return 0;
3482 #endif
3483 }
3484
3485 static void log_callback_null(void *ptr, int level, const char *fmt, va_list vl)
3486 {
3487 }
3488
3489 int main(int argc, char **argv)
3490 {
3491     int ret;
3492     int64_t ti;
3493
3494     register_exit(ffmpeg_cleanup);
3495
3496     setvbuf(stderr,NULL,_IONBF,0); /* win32 runtime needs this */
3497
3498     av_log_set_flags(AV_LOG_SKIP_REPEATED);
3499     parse_loglevel(argc, argv, options);
3500
3501     if(argc>1 && !strcmp(argv[1], "-d")){
3502         run_as_daemon=1;
3503         av_log_set_callback(log_callback_null);
3504         argc--;
3505         argv++;
3506     }
3507
3508     avcodec_register_all();
3509 #if CONFIG_AVDEVICE
3510     avdevice_register_all();
3511 #endif
3512     avfilter_register_all();
3513     av_register_all();
3514     avformat_network_init();
3515
3516     show_banner(argc, argv, options);
3517
3518     term_init();
3519
3520     /* parse options and open all input/output files */
3521     ret = ffmpeg_parse_options(argc, argv);
3522     if (ret < 0)
3523         exit_program(1);
3524
3525     if (nb_output_files <= 0 && nb_input_files == 0) {
3526         show_usage();
3527         av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
3528         exit_program(1);
3529     }
3530
3531     /* file converter / grab */
3532     if (nb_output_files <= 0) {
3533         av_log(NULL, AV_LOG_FATAL, "At least one output file must be specified\n");
3534         exit_program(1);
3535     }
3536
3537 //     if (nb_input_files == 0) {
3538 //         av_log(NULL, AV_LOG_FATAL, "At least one input file must be specified\n");
3539 //         exit_program(1);
3540 //     }
3541
3542     current_time = ti = getutime();
3543     if (transcode() < 0)
3544         exit_program(1);
3545     ti = getutime() - ti;
3546     if (do_benchmark) {
3547         printf("bench: utime=%0.3fs\n", ti / 1000000.0);
3548     }
3549     av_log(NULL, AV_LOG_DEBUG, "%"PRIu64" frames successfully decoded, %"PRIu64" decoding errors\n",
3550            decode_error_stat[0], decode_error_stat[1]);
3551     if ((decode_error_stat[0] + decode_error_stat[1]) * max_error_rate < decode_error_stat[1])
3552         exit_program(69);
3553
3554     exit_program(received_nb_signals ? 255 : 0);
3555     return 0;
3556 }