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         avcodec_free_frame(&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     }
 837
 838     switch (format_video_sync) {
 839     case VSYNC_VSCFR:
 840         if (ost->frame_number == 0 && delta - duration >= 0.5) {
 841             av_log(NULL, AV_LOG_DEBUG, "Not duplicating %d initial frames\n", (int)lrintf(delta - duration));
 842             delta = duration;
 843             ost->sync_opts = lrint(sync_ipts);
 844         }
 845     case VSYNC_CFR:
 846         // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
 847         if (delta < -1.1)
 848             nb_frames = 0;
 849         else if (delta > 1.1)
 850             nb_frames = lrintf(delta);
 851         break;
 852     case VSYNC_VFR:
 853         if (delta <= -0.6)
 854             nb_frames = 0;
 855         else if (delta > 0.6)
 856             ost->sync_opts = lrint(sync_ipts);
 857         break;
 858     case VSYNC_DROP:
 859     case VSYNC_PASSTHROUGH:
 860         ost->sync_opts = lrint(sync_ipts);
 861         break;
 862     default:
 863         av_assert0(0);
 864     }
 865
 866     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
 867     if (nb_frames == 0) {
 868         nb_frames_drop++;
 869         av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
 870         return;
 871     } else if (nb_frames > 1) {
 872         if (nb_frames > dts_error_threshold * 30) {
 873             av_log(NULL, AV_LOG_ERROR, "%d frame duplication too large, skipping\n", nb_frames - 1);
 874             nb_frames_drop++;
 875             return;
 876         }
 877         nb_frames_dup += nb_frames - 1;
 878         av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
 879     }
 880
 881   /* duplicates frame if needed */
 882   for (i = 0; i < nb_frames; i++) {
 883     av_init_packet(&pkt);
 884     pkt.data = NULL;
 885     pkt.size = 0;
 886
 887     in_picture->pts = ost->sync_opts;
 888
 889 #if 1
 890     if (!check_recording_time(ost))
 891 #else
 892     if (ost->frame_number >= ost->max_frames)
 893 #endif
 894         return;
 895
 896     if (s->oformat->flags & AVFMT_RAWPICTURE &&
 897         enc->codec->id == AV_CODEC_ID_RAWVIDEO) {
 898         /* raw pictures are written as AVPicture structure to
 899            avoid any copies. We support temporarily the older
 900            method. */
 901         enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
 902         enc->coded_frame->top_field_first  = in_picture->top_field_first;
 903         if (enc->coded_frame->interlaced_frame)
 904             enc->field_order = enc->coded_frame->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
 905         else
 906             enc->field_order = AV_FIELD_PROGRESSIVE;
 907         pkt.data   = (uint8_t *)in_picture;
 908         pkt.size   =  sizeof(AVPicture);
 909         pkt.pts    = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
 910         pkt.flags |= AV_PKT_FLAG_KEY;
 911
 912         video_size += pkt.size;
 913         write_frame(s, &pkt, ost);
 914     } else {
 915         int got_packet, forced_keyframe = 0;
 916         double pts_time;
 917
 918         if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME) &&
 919             ost->top_field_first >= 0)
 920             in_picture->top_field_first = !!ost->top_field_first;
 921
 922         if (in_picture->interlaced_frame) {
 923             if (enc->codec->id == AV_CODEC_ID_MJPEG)
 924                 enc->field_order = in_picture->top_field_first ? AV_FIELD_TT:AV_FIELD_BB;
 925             else
 926                 enc->field_order = in_picture->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
 927         } else
 928             enc->field_order = AV_FIELD_PROGRESSIVE;
 929
 930         in_picture->quality = ost->st->codec->global_quality;
 931         if (!enc->me_threshold)
 932             in_picture->pict_type = 0;
 933
 934         pts_time = in_picture->pts != AV_NOPTS_VALUE ?
 935             in_picture->pts * av_q2d(enc->time_base) : NAN;
 936         if (ost->forced_kf_index < ost->forced_kf_count &&
 937             in_picture->pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
 938             ost->forced_kf_index++;
 939             forced_keyframe = 1;
 940         } else if (ost->forced_keyframes_pexpr) {
 941             double res;
 942             ost->forced_keyframes_expr_const_values[FKF_T] = pts_time;
 943             res = av_expr_eval(ost->forced_keyframes_pexpr,
 944                                ost->forced_keyframes_expr_const_values, NULL);
 945             av_dlog(NULL, "force_key_frame: n:%f n_forced:%f prev_forced_n:%f t:%f prev_forced_t:%f -> res:%f\n",
 946                     ost->forced_keyframes_expr_const_values[FKF_N],
 947                     ost->forced_keyframes_expr_const_values[FKF_N_FORCED],
 948                     ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N],
 949                     ost->forced_keyframes_expr_const_values[FKF_T],
 950                     ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T],
 951                     res);
 952             if (res) {
 953                 forced_keyframe = 1;
 954                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] =
 955                     ost->forced_keyframes_expr_const_values[FKF_N];
 956                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] =
 957                     ost->forced_keyframes_expr_const_values[FKF_T];
 958                 ost->forced_keyframes_expr_const_values[FKF_N_FORCED] += 1;
 959             }
 960
 961             ost->forced_keyframes_expr_const_values[FKF_N] += 1;
 962         }
 963         if (forced_keyframe) {
 964             in_picture->pict_type = AV_PICTURE_TYPE_I;
 965             av_log(NULL, AV_LOG_DEBUG, "Forced keyframe at time %f\n", pts_time);
 966         }
 967
 968         update_benchmark(NULL);
 969         ret = avcodec_encode_video2(enc, &pkt, in_picture, &got_packet);
 970         update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
 971         if (ret < 0) {
 972             av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
 973             exit_program(1);
 974         }
 975
 976         if (got_packet) {
 977             if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
 978                 pkt.pts = ost->sync_opts;
 979
 980             if (pkt.pts != AV_NOPTS_VALUE)
 981                 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
 982             if (pkt.dts != AV_NOPTS_VALUE)
 983                 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
 984
 985             if (debug_ts) {
 986                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
 987                     "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
 988                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
 989                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
 990             }
 991
 992             frame_size = pkt.size;
 993             video_size += pkt.size;
 994             write_frame(s, &pkt, ost);
 995             av_free_packet(&pkt);
 996
 997             /* if two pass, output log */
 998             if (ost->logfile && enc->stats_out) {
 999                 fprintf(ost->logfile, "%s", enc->stats_out);
1000             }
1001         }
1002     }
1003     ost->sync_opts++;
1004     /*
1005      * For video, number of frames in == number of packets out.
1006      * But there may be reordering, so we can't throw away frames on encoder
1007      * flush, we need to limit them here, before they go into encoder.
1008      */
1009     ost->frame_number++;
1010
1011     if (vstats_filename && frame_size)
1012         do_video_stats(ost, frame_size);
1013   }
1014 }
1015
1016 static double psnr(double d)
1017 {
1018     return -10.0 * log(d) / log(10.0);
1019 }
1020
1021 static void do_video_stats(OutputStream *ost, int frame_size)
1022 {
1023     AVCodecContext *enc;
1024     int frame_number;
1025     double ti1, bitrate, avg_bitrate;
1026
1027     /* this is executed just the first time do_video_stats is called */
1028     if (!vstats_file) {
1029         vstats_file = fopen(vstats_filename, "w");
1030         if (!vstats_file) {
1031             perror("fopen");
1032             exit_program(1);
1033         }
1034     }
1035
1036     enc = ost->st->codec;
1037     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1038         frame_number = ost->st->nb_frames;
1039         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
1040         if (enc->flags&CODEC_FLAG_PSNR)
1041             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
1042
1043         fprintf(vstats_file,"f_size= %6d ", frame_size);
1044         /* compute pts value */
1045         ti1 = ost->st->pts.val * av_q2d(enc->time_base);
1046         if (ti1 < 0.01)
1047             ti1 = 0.01;
1048
1049         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1050         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1051         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1052                (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1053         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1054     }
1055 }
1056
1057 /**
1058  * Get and encode new output from any of the filtergraphs, without causing
1059  * activity.
1060  *
1061  * @return  0 for success, <0 for severe errors
1062  */
1063 static int reap_filters(void)
1064 {
1065     AVFrame *filtered_frame = NULL;
1066     int i;
1067     int64_t frame_pts;
1068
1069     /* Reap all buffers present in the buffer sinks */
1070     for (i = 0; i < nb_output_streams; i++) {
1071         OutputStream *ost = output_streams[i];
1072         OutputFile    *of = output_files[ost->file_index];
1073         int ret = 0;
1074
1075         if (!ost->filter)
1076             continue;
1077
1078         if (!ost->filtered_frame && !(ost->filtered_frame = av_frame_alloc())) {
1079             return AVERROR(ENOMEM);
1080         } else
1081             avcodec_get_frame_defaults(ost->filtered_frame);
1082         filtered_frame = ost->filtered_frame;
1083
1084         while (1) {
1085             ret = av_buffersink_get_frame_flags(ost->filter->filter, filtered_frame,
1086                                                AV_BUFFERSINK_FLAG_NO_REQUEST);
1087             if (ret < 0) {
1088                 if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
1089                     av_log(NULL, AV_LOG_WARNING,
1090                            "Error in av_buffersink_get_frame_flags(): %s\n", av_err2str(ret));
1091                 }
1092                 break;
1093             }
1094             frame_pts = AV_NOPTS_VALUE;
1095             if (filtered_frame->pts != AV_NOPTS_VALUE) {
1096                 int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
1097                 filtered_frame->pts = frame_pts = av_rescale_q(filtered_frame->pts,
1098                                                 ost->filter->filter->inputs[0]->time_base,
1099                                                 ost->st->codec->time_base) -
1100                                     av_rescale_q(start_time,
1101                                                 AV_TIME_BASE_Q,
1102                                                 ost->st->codec->time_base);
1103             }
1104             //if (ost->source_index >= 0)
1105             //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
1106
1107
1108             switch (ost->filter->filter->inputs[0]->type) {
1109             case AVMEDIA_TYPE_VIDEO:
1110                 filtered_frame->pts = frame_pts;
1111                 if (!ost->frame_aspect_ratio.num)
1112                     ost->st->codec->sample_aspect_ratio = filtered_frame->sample_aspect_ratio;
1113
1114                 do_video_out(of->ctx, ost, filtered_frame);
1115                 break;
1116             case AVMEDIA_TYPE_AUDIO:
1117                 filtered_frame->pts = frame_pts;
1118                 if (!(ost->st->codec->codec->capabilities & CODEC_CAP_PARAM_CHANGE) &&
1119                     ost->st->codec->channels != av_frame_get_channels(filtered_frame)) {
1120                     av_log(NULL, AV_LOG_ERROR,
1121                            "Audio filter graph output is not normalized and encoder does not support parameter changes\n");
1122                     break;
1123                 }
1124                 do_audio_out(of->ctx, ost, filtered_frame);
1125                 break;
1126             default:
1127                 // TODO support subtitle filters
1128                 av_assert0(0);
1129             }
1130
1131             av_frame_unref(filtered_frame);
1132         }
1133     }
1134
1135     return 0;
1136 }
1137
1138 static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
1139 {
1140     char buf[1024];
1141     AVBPrint buf_script;
1142     OutputStream *ost;
1143     AVFormatContext *oc;
1144     int64_t total_size;
1145     AVCodecContext *enc;
1146     int frame_number, vid, i;
1147     double bitrate;
1148     int64_t pts = INT64_MIN;
1149     static int64_t last_time = -1;
1150     static int qp_histogram[52];
1151     int hours, mins, secs, us;
1152
1153     if (!print_stats && !is_last_report && !progress_avio)
1154         return;
1155
1156     if (!is_last_report) {
1157         if (last_time == -1) {
1158             last_time = cur_time;
1159             return;
1160         }
1161         if ((cur_time - last_time) < 500000)
1162             return;
1163         last_time = cur_time;
1164     }
1165
1166
1167     oc = output_files[0]->ctx;
1168
1169     total_size = avio_size(oc->pb);
1170     if (total_size <= 0) // FIXME improve avio_size() so it works with non seekable output too
1171         total_size = avio_tell(oc->pb);
1172
1173     buf[0] = '\0';
1174     vid = 0;
1175     av_bprint_init(&buf_script, 0, 1);
1176     for (i = 0; i < nb_output_streams; i++) {
1177         float q = -1;
1178         ost = output_streams[i];
1179         enc = ost->st->codec;
1180         if (!ost->stream_copy && enc->coded_frame)
1181             q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
1182         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1183             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1184             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1185                        ost->file_index, ost->index, q);
1186         }
1187         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1188             float fps, t = (cur_time-timer_start) / 1000000.0;
1189
1190             frame_number = ost->frame_number;
1191             fps = t > 1 ? frame_number / t : 0;
1192             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
1193                      frame_number, fps < 9.95, fps, q);
1194             av_bprintf(&buf_script, "frame=%d\n", frame_number);
1195             av_bprintf(&buf_script, "fps=%.1f\n", fps);
1196             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1197                        ost->file_index, ost->index, q);
1198             if (is_last_report)
1199                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1200             if (qp_hist) {
1201                 int j;
1202                 int qp = lrintf(q);
1203                 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
1204                     qp_histogram[qp]++;
1205                 for (j = 0; j < 32; j++)
1206                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log2(qp_histogram[j] + 1)));
1207             }
1208             if ((enc->flags&CODEC_FLAG_PSNR) && (enc->coded_frame || is_last_report)) {
1209                 int j;
1210                 double error, error_sum = 0;
1211                 double scale, scale_sum = 0;
1212                 double p;
1213                 char type[3] = { 'Y','U','V' };
1214                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1215                 for (j = 0; j < 3; j++) {
1216                     if (is_last_report) {
1217                         error = enc->error[j];
1218                         scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
1219                     } else {
1220                         error = enc->coded_frame->error[j];
1221                         scale = enc->width * enc->height * 255.0 * 255.0;
1222                     }
1223                     if (j)
1224                         scale /= 4;
1225                     error_sum += error;
1226                     scale_sum += scale;
1227                     p = psnr(error / scale);
1228                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], p);
1229                     av_bprintf(&buf_script, "stream_%d_%d_psnr_%c=%2.2f\n",
1230                                ost->file_index, ost->index, type[j] | 32, p);
1231                 }
1232                 p = psnr(error_sum / scale_sum);
1233                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
1234                 av_bprintf(&buf_script, "stream_%d_%d_psnr_all=%2.2f\n",
1235                            ost->file_index, ost->index, p);
1236             }
1237             vid = 1;
1238         }
1239         /* compute min output value */
1240         if ((is_last_report || !ost->finished) && ost->st->pts.val != AV_NOPTS_VALUE)
1241             pts = FFMAX(pts, av_rescale_q(ost->st->pts.val,
1242                                           ost->st->time_base, AV_TIME_BASE_Q));
1243     }
1244
1245     secs = pts / AV_TIME_BASE;
1246     us = pts % AV_TIME_BASE;
1247     mins = secs / 60;
1248     secs %= 60;
1249     hours = mins / 60;
1250     mins %= 60;
1251
1252     bitrate = pts && total_size >= 0 ? total_size * 8 / (pts / 1000.0) : -1;
1253
1254     if (total_size < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1255                                  "size=N/A time=");
1256     else                snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1257                                  "size=%8.0fkB time=", total_size / 1024.0);
1258     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1259              "%02d:%02d:%02d.%02d ", hours, mins, secs,
1260              (100 * us) / AV_TIME_BASE);
1261     if (bitrate < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1262                               "bitrate=N/A");
1263     else             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1264                               "bitrate=%6.1fkbits/s", bitrate);
1265     if (total_size < 0) av_bprintf(&buf_script, "total_size=N/A\n");
1266     else                av_bprintf(&buf_script, "total_size=%"PRId64"\n", total_size);
1267     av_bprintf(&buf_script, "out_time_ms=%"PRId64"\n", pts);
1268     av_bprintf(&buf_script, "out_time=%02d:%02d:%02d.%06d\n",
1269                hours, mins, secs, us);
1270
1271     if (nb_frames_dup || nb_frames_drop)
1272         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1273                 nb_frames_dup, nb_frames_drop);
1274     av_bprintf(&buf_script, "dup_frames=%d\n", nb_frames_dup);
1275     av_bprintf(&buf_script, "drop_frames=%d\n", nb_frames_drop);
1276
1277     if (print_stats || is_last_report) {
1278         if (print_stats==1 && AV_LOG_INFO > av_log_get_level()) {
1279             fprintf(stderr, "%s    \r", buf);
1280         } else
1281             av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
1282
1283     fflush(stderr);
1284     }
1285
1286     if (progress_avio) {
1287         av_bprintf(&buf_script, "progress=%s\n",
1288                    is_last_report ? "end" : "continue");
1289         avio_write(progress_avio, buf_script.str,
1290                    FFMIN(buf_script.len, buf_script.size - 1));
1291         avio_flush(progress_avio);
1292         av_bprint_finalize(&buf_script, NULL);
1293         if (is_last_report) {
1294             avio_close(progress_avio);
1295             progress_avio = NULL;
1296         }
1297     }
1298
1299     if (is_last_report) {
1300         int64_t raw= audio_size + video_size + subtitle_size + extra_size;
1301         av_log(NULL, AV_LOG_INFO, "\n");
1302         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB subtitle:%1.0f global headers:%1.0fkB muxing overhead %f%%\n",
1303                video_size / 1024.0,
1304                audio_size / 1024.0,
1305                subtitle_size / 1024.0,
1306                extra_size / 1024.0,
1307                100.0 * (total_size - raw) / raw
1308         );
1309         if(video_size + audio_size + subtitle_size + extra_size == 0){
1310             av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
1311         }
1312     }
1313 }
1314
1315 static void flush_encoders(void)
1316 {
1317     int i, ret;
1318
1319     for (i = 0; i < nb_output_streams; i++) {
1320         OutputStream   *ost = output_streams[i];
1321         AVCodecContext *enc = ost->st->codec;
1322         AVFormatContext *os = output_files[ost->file_index]->ctx;
1323         int stop_encoding = 0;
1324
1325         if (!ost->encoding_needed)
1326             continue;
1327
1328         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
1329             continue;
1330         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == AV_CODEC_ID_RAWVIDEO)
1331             continue;
1332
1333         for (;;) {
1334             int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
1335             const char *desc;
1336             int64_t *size;
1337
1338             switch (ost->st->codec->codec_type) {
1339             case AVMEDIA_TYPE_AUDIO:
1340                 encode = avcodec_encode_audio2;
1341                 desc   = "Audio";
1342                 size   = &audio_size;
1343                 break;
1344             case AVMEDIA_TYPE_VIDEO:
1345                 encode = avcodec_encode_video2;
1346                 desc   = "Video";
1347                 size   = &video_size;
1348                 break;
1349             default:
1350                 stop_encoding = 1;
1351             }
1352
1353             if (encode) {
1354                 AVPacket pkt;
1355                 int got_packet;
1356                 av_init_packet(&pkt);
1357                 pkt.data = NULL;
1358                 pkt.size = 0;
1359
1360                 update_benchmark(NULL);
1361                 ret = encode(enc, &pkt, NULL, &got_packet);
1362                 update_benchmark("flush %s %d.%d", desc, ost->file_index, ost->index);
1363                 if (ret < 0) {
1364                     av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
1365                     exit_program(1);
1366                 }
1367                 *size += pkt.size;
1368                 if (ost->logfile && enc->stats_out) {
1369                     fprintf(ost->logfile, "%s", enc->stats_out);
1370                 }
1371                 if (!got_packet) {
1372                     stop_encoding = 1;
1373                     break;
1374                 }
1375                 if (pkt.pts != AV_NOPTS_VALUE)
1376                     pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
1377                 if (pkt.dts != AV_NOPTS_VALUE)
1378                     pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
1379                 if (pkt.duration > 0)
1380                     pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
1381                 write_frame(os, &pkt, ost);
1382                 if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && vstats_filename) {
1383                     do_video_stats(ost, pkt.size);
1384                 }
1385             }
1386
1387             if (stop_encoding)
1388                 break;
1389         }
1390     }
1391 }
1392
1393 /*
1394  * Check whether a packet from ist should be written into ost at this time
1395  */
1396 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1397 {
1398     OutputFile *of = output_files[ost->file_index];
1399     int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
1400
1401     if (ost->source_index != ist_index)
1402         return 0;
1403
1404     if (of->start_time != AV_NOPTS_VALUE && ist->pts < of->start_time)
1405         return 0;
1406
1407     return 1;
1408 }
1409
1410 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1411 {
1412     OutputFile *of = output_files[ost->file_index];
1413     InputFile   *f = input_files [ist->file_index];
1414     int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
1415     int64_t ost_tb_start_time = av_rescale_q(start_time, AV_TIME_BASE_Q, ost->st->time_base);
1416     int64_t ist_tb_start_time = av_rescale_q(start_time, AV_TIME_BASE_Q, ist->st->time_base);
1417     AVPicture pict;
1418     AVPacket opkt;
1419
1420     av_init_packet(&opkt);
1421
1422     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1423         !ost->copy_initial_nonkeyframes)
1424         return;
1425
1426     if (pkt->pts == AV_NOPTS_VALUE) {
1427         if (!ost->frame_number && ist->pts < start_time &&
1428             !ost->copy_prior_start)
1429             return;
1430     } else {
1431         if (!ost->frame_number && pkt->pts < ist_tb_start_time &&
1432             !ost->copy_prior_start)
1433             return;
1434     }
1435
1436     if (of->recording_time != INT64_MAX &&
1437         ist->pts >= of->recording_time + start_time) {
1438         close_output_stream(ost);
1439         return;
1440     }
1441
1442     if (f->recording_time != INT64_MAX) {
1443         start_time = f->ctx->start_time;
1444         if (f->start_time != AV_NOPTS_VALUE)
1445             start_time += f->start_time;
1446         if (ist->pts >= f->recording_time + start_time) {
1447             close_output_stream(ost);
1448             return;
1449         }
1450     }
1451
1452     /* force the input stream PTS */
1453     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1454         audio_size += pkt->size;
1455     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1456         video_size += pkt->size;
1457         ost->sync_opts++;
1458     } else if (ost->st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
1459         subtitle_size += pkt->size;
1460     }
1461
1462     if (pkt->pts != AV_NOPTS_VALUE)
1463         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1464     else
1465         opkt.pts = AV_NOPTS_VALUE;
1466
1467     if (pkt->dts == AV_NOPTS_VALUE)
1468         opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
1469     else
1470         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1471     opkt.dts -= ost_tb_start_time;
1472
1473     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && pkt->dts != AV_NOPTS_VALUE) {
1474         int duration = av_get_audio_frame_duration(ist->st->codec, pkt->size);
1475         if(!duration)
1476             duration = ist->st->codec->frame_size;
1477         opkt.dts = opkt.pts = av_rescale_delta(ist->st->time_base, pkt->dts,
1478                                                (AVRational){1, ist->st->codec->sample_rate}, duration, &ist->filter_in_rescale_delta_last,
1479                                                ost->st->time_base) - ost_tb_start_time;
1480     }
1481
1482     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1483     opkt.flags    = pkt->flags;
1484
1485     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1486     if (  ost->st->codec->codec_id != AV_CODEC_ID_H264
1487        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG1VIDEO
1488        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG2VIDEO
1489        && ost->st->codec->codec_id != AV_CODEC_ID_VC1
1490        ) {
1491         if (av_parser_change(ost->parser, ost->st->codec,
1492                              &opkt.data, &opkt.size,
1493                              pkt->data, pkt->size,
1494                              pkt->flags & AV_PKT_FLAG_KEY)) {
1495             opkt.buf = av_buffer_create(opkt.data, opkt.size, av_buffer_default_free, NULL, 0);
1496             if (!opkt.buf)
1497                 exit_program(1);
1498         }
1499     } else {
1500         opkt.data = pkt->data;
1501         opkt.size = pkt->size;
1502     }
1503     av_copy_packet_side_data(&opkt, pkt);
1504
1505     if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (of->ctx->oformat->flags & AVFMT_RAWPICTURE)) {
1506         /* store AVPicture in AVPacket, as expected by the output format */
1507         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1508         opkt.data = (uint8_t *)&pict;
1509         opkt.size = sizeof(AVPicture);
1510         opkt.flags |= AV_PKT_FLAG_KEY;
1511     }
1512
1513     write_frame(of->ctx, &opkt, ost);
1514     ost->st->codec->frame_number++;
1515 }
1516
1517 int guess_input_channel_layout(InputStream *ist)
1518 {
1519     AVCodecContext *dec = ist->st->codec;
1520
1521     if (!dec->channel_layout) {
1522         char layout_name[256];
1523
1524         if (dec->channels > ist->guess_layout_max)
1525             return 0;
1526         dec->channel_layout = av_get_default_channel_layout(dec->channels);
1527         if (!dec->channel_layout)
1528             return 0;
1529         av_get_channel_layout_string(layout_name, sizeof(layout_name),
1530                                      dec->channels, dec->channel_layout);
1531         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for  Input Stream "
1532                "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
1533     }
1534     return 1;
1535 }
1536
1537 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1538 {
1539     AVFrame *decoded_frame, *f;
1540     AVCodecContext *avctx = ist->st->codec;
1541     int i, ret, err = 0, resample_changed;
1542     AVRational decoded_frame_tb;
1543
1544     if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
1545         return AVERROR(ENOMEM);
1546     if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1547         return AVERROR(ENOMEM);
1548     decoded_frame = ist->decoded_frame;
1549
1550     update_benchmark(NULL);
1551     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1552     update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
1553
1554     if (ret >= 0 && avctx->sample_rate <= 0) {
1555         av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
1556         ret = AVERROR_INVALIDDATA;
1557     }
1558
1559     if (*got_output || ret<0 || pkt->size)
1560         decode_error_stat[ret<0] ++;
1561
1562     if (!*got_output || ret < 0) {
1563         if (!pkt->size) {
1564             for (i = 0; i < ist->nb_filters; i++)
1565 #if 1
1566                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1567 #else
1568                 av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
1569 #endif
1570         }
1571         return ret;
1572     }
1573
1574 #if 1
1575     /* increment next_dts to use for the case where the input stream does not
1576        have timestamps or there are multiple frames in the packet */
1577     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1578                      avctx->sample_rate;
1579     ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1580                      avctx->sample_rate;
1581 #endif
1582
1583     resample_changed = ist->resample_sample_fmt     != decoded_frame->format         ||
1584                        ist->resample_channels       != avctx->channels               ||
1585                        ist->resample_channel_layout != decoded_frame->channel_layout ||
1586                        ist->resample_sample_rate    != decoded_frame->sample_rate;
1587     if (resample_changed) {
1588         char layout1[64], layout2[64];
1589
1590         if (!guess_input_channel_layout(ist)) {
1591             av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
1592                    "layout for Input Stream #%d.%d\n", ist->file_index,
1593                    ist->st->index);
1594             exit_program(1);
1595         }
1596         decoded_frame->channel_layout = avctx->channel_layout;
1597
1598         av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
1599                                      ist->resample_channel_layout);
1600         av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
1601                                      decoded_frame->channel_layout);
1602
1603         av_log(NULL, AV_LOG_INFO,
1604                "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",
1605                ist->file_index, ist->st->index,
1606                ist->resample_sample_rate,  av_get_sample_fmt_name(ist->resample_sample_fmt),
1607                ist->resample_channels, layout1,
1608                decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
1609                avctx->channels, layout2);
1610
1611         ist->resample_sample_fmt     = decoded_frame->format;
1612         ist->resample_sample_rate    = decoded_frame->sample_rate;
1613         ist->resample_channel_layout = decoded_frame->channel_layout;
1614         ist->resample_channels       = avctx->channels;
1615
1616         for (i = 0; i < nb_filtergraphs; i++)
1617             if (ist_in_filtergraph(filtergraphs[i], ist)) {
1618                 FilterGraph *fg = filtergraphs[i];
1619                 int j;
1620                 if (configure_filtergraph(fg) < 0) {
1621                     av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1622                     exit_program(1);
1623                 }
1624                 for (j = 0; j < fg->nb_outputs; j++) {
1625                     OutputStream *ost = fg->outputs[j]->ost;
1626                     if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
1627                         !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
1628                         av_buffersink_set_frame_size(ost->filter->filter,
1629                                                      ost->st->codec->frame_size);
1630                 }
1631             }
1632     }
1633
1634     /* if the decoder provides a pts, use it instead of the last packet pts.
1635        the decoder could be delaying output by a packet or more. */
1636     if (decoded_frame->pts != AV_NOPTS_VALUE) {
1637         ist->dts = ist->next_dts = ist->pts = ist->next_pts = av_rescale_q(decoded_frame->pts, avctx->time_base, AV_TIME_BASE_Q);
1638         decoded_frame_tb   = avctx->time_base;
1639     } else if (decoded_frame->pkt_pts != AV_NOPTS_VALUE) {
1640         decoded_frame->pts = decoded_frame->pkt_pts;
1641         pkt->pts           = AV_NOPTS_VALUE;
1642         decoded_frame_tb   = ist->st->time_base;
1643     } else if (pkt->pts != AV_NOPTS_VALUE) {
1644         decoded_frame->pts = pkt->pts;
1645         pkt->pts           = AV_NOPTS_VALUE;
1646         decoded_frame_tb   = ist->st->time_base;
1647     }else {
1648         decoded_frame->pts = ist->dts;
1649         decoded_frame_tb   = AV_TIME_BASE_Q;
1650     }
1651     if (decoded_frame->pts != AV_NOPTS_VALUE)
1652         decoded_frame->pts = av_rescale_delta(decoded_frame_tb, decoded_frame->pts,
1653                                               (AVRational){1, ist->st->codec->sample_rate}, decoded_frame->nb_samples, &ist->filter_in_rescale_delta_last,
1654                                               (AVRational){1, ist->st->codec->sample_rate});
1655     for (i = 0; i < ist->nb_filters; i++) {
1656         if (i < ist->nb_filters - 1) {
1657             f = ist->filter_frame;
1658             err = av_frame_ref(f, decoded_frame);
1659             if (err < 0)
1660                 break;
1661         } else
1662             f = decoded_frame;
1663         err = av_buffersrc_add_frame_flags(ist->filters[i]->filter, f,
1664                                      AV_BUFFERSRC_FLAG_PUSH);
1665         if (err == AVERROR_EOF)
1666             err = 0; /* ignore */
1667         if (err < 0)
1668             break;
1669     }
1670     decoded_frame->pts = AV_NOPTS_VALUE;
1671
1672     av_frame_unref(ist->filter_frame);
1673     av_frame_unref(decoded_frame);
1674     return err < 0 ? err : ret;
1675 }
1676
1677 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
1678 {
1679     AVFrame *decoded_frame, *f;
1680     int i, ret = 0, err = 0, resample_changed;
1681     int64_t best_effort_timestamp;
1682     AVRational *frame_sample_aspect;
1683
1684     if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
1685         return AVERROR(ENOMEM);
1686     if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1687         return AVERROR(ENOMEM);
1688     decoded_frame = ist->decoded_frame;
1689     pkt->dts  = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
1690
1691     update_benchmark(NULL);
1692     ret = avcodec_decode_video2(ist->st->codec,
1693                                 decoded_frame, got_output, pkt);
1694     update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
1695
1696     if (*got_output || ret<0 || pkt->size)
1697         decode_error_stat[ret<0] ++;
1698
1699     if (!*got_output || ret < 0) {
1700         if (!pkt->size) {
1701             for (i = 0; i < ist->nb_filters; i++)
1702 #if 1
1703                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1704 #else
1705                 av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
1706 #endif
1707         }
1708         return ret;
1709     }
1710
1711     if(ist->top_field_first>=0)
1712         decoded_frame->top_field_first = ist->top_field_first;
1713
1714     if (ist->hwaccel_retrieve_data && decoded_frame->format == ist->hwaccel_pix_fmt) {
1715         err = ist->hwaccel_retrieve_data(ist->st->codec, decoded_frame);
1716         if (err < 0)
1717             goto fail;
1718     }
1719     ist->hwaccel_retrieved_pix_fmt = decoded_frame->format;
1720
1721     best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
1722     if(best_effort_timestamp != AV_NOPTS_VALUE)
1723         ist->next_pts = ist->pts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);
1724
1725     if (debug_ts) {
1726         av_log(NULL, AV_LOG_INFO, "decoder -> ist_index:%d type:video "
1727                 "frame_pts:%s frame_pts_time:%s best_effort_ts:%"PRId64" best_effort_ts_time:%s keyframe:%d frame_type:%d \n",
1728                 ist->st->index, av_ts2str(decoded_frame->pts),
1729                 av_ts2timestr(decoded_frame->pts, &ist->st->time_base),
1730                 best_effort_timestamp,
1731                 av_ts2timestr(best_effort_timestamp, &ist->st->time_base),
1732                 decoded_frame->key_frame, decoded_frame->pict_type);
1733     }
1734
1735     pkt->size = 0;
1736
1737     if (ist->st->sample_aspect_ratio.num)
1738         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1739
1740     resample_changed = ist->resample_width   != decoded_frame->width  ||
1741                        ist->resample_height  != decoded_frame->height ||
1742                        ist->resample_pix_fmt != decoded_frame->format;
1743     if (resample_changed) {
1744         av_log(NULL, AV_LOG_INFO,
1745                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1746                ist->file_index, ist->st->index,
1747                ist->resample_width,  ist->resample_height,  av_get_pix_fmt_name(ist->resample_pix_fmt),
1748                decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
1749
1750         ist->resample_width   = decoded_frame->width;
1751         ist->resample_height  = decoded_frame->height;
1752         ist->resample_pix_fmt = decoded_frame->format;
1753
1754         for (i = 0; i < nb_filtergraphs; i++) {
1755             if (ist_in_filtergraph(filtergraphs[i], ist) && ist->reinit_filters &&
1756                 configure_filtergraph(filtergraphs[i]) < 0) {
1757                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1758                 exit_program(1);
1759             }
1760         }
1761     }
1762
1763     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
1764     for (i = 0; i < ist->nb_filters; i++) {
1765         if (!frame_sample_aspect->num)
1766             *frame_sample_aspect = ist->st->sample_aspect_ratio;
1767
1768         if (i < ist->nb_filters - 1) {
1769             f = ist->filter_frame;
1770             err = av_frame_ref(f, decoded_frame);
1771             if (err < 0)
1772                 break;
1773         } else
1774             f = decoded_frame;
1775         ret = av_buffersrc_add_frame_flags(ist->filters[i]->filter, f, AV_BUFFERSRC_FLAG_PUSH);
1776         if (ret == AVERROR_EOF) {
1777             ret = 0; /* ignore */
1778         } else if (ret < 0) {
1779             av_log(NULL, AV_LOG_FATAL,
1780                    "Failed to inject frame into filter network: %s\n", av_err2str(ret));
1781             exit_program(1);
1782         }
1783     }
1784
1785 fail:
1786     av_frame_unref(ist->filter_frame);
1787     av_frame_unref(decoded_frame);
1788     return err < 0 ? err : ret;
1789 }
1790
1791 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1792 {
1793     AVSubtitle subtitle;
1794     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
1795                                           &subtitle, got_output, pkt);
1796
1797     if (*got_output || ret<0 || pkt->size)
1798         decode_error_stat[ret<0] ++;
1799
1800     if (ret < 0 || !*got_output) {
1801         if (!pkt->size)
1802             sub2video_flush(ist);
1803         return ret;
1804     }
1805
1806     if (ist->fix_sub_duration) {
1807         if (ist->prev_sub.got_output) {
1808             int end = av_rescale(subtitle.pts - ist->prev_sub.subtitle.pts,
1809                                  1000, AV_TIME_BASE);
1810             if (end < ist->prev_sub.subtitle.end_display_time) {
1811                 av_log(ist->st->codec, AV_LOG_DEBUG,
1812                        "Subtitle duration reduced from %d to %d\n",
1813                        ist->prev_sub.subtitle.end_display_time, end);
1814                 ist->prev_sub.subtitle.end_display_time = end;
1815             }
1816         }
1817         FFSWAP(int,        *got_output, ist->prev_sub.got_output);
1818         FFSWAP(int,        ret,         ist->prev_sub.ret);
1819         FFSWAP(AVSubtitle, subtitle,    ist->prev_sub.subtitle);
1820     }
1821
1822     sub2video_update(ist, &subtitle);
1823
1824     if (!*got_output || !subtitle.num_rects)
1825         return ret;
1826
1827     for (i = 0; i < nb_output_streams; i++) {
1828         OutputStream *ost = output_streams[i];
1829
1830         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1831             continue;
1832
1833         do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle);
1834     }
1835
1836     avsubtitle_free(&subtitle);
1837     return ret;
1838 }
1839
1840 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1841 static int output_packet(InputStream *ist, const AVPacket *pkt)
1842 {
1843     int ret = 0, i;
1844     int got_output = 0;
1845
1846     AVPacket avpkt;
1847     if (!ist->saw_first_ts) {
1848         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;
1849         ist->pts = 0;
1850         if (pkt != NULL && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
1851             ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1852             ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
1853         }
1854         ist->saw_first_ts = 1;
1855     }
1856
1857     if (ist->next_dts == AV_NOPTS_VALUE)
1858         ist->next_dts = ist->dts;
1859     if (ist->next_pts == AV_NOPTS_VALUE)
1860         ist->next_pts = ist->pts;
1861
1862     if (pkt == NULL) {
1863         /* EOF handling */
1864         av_init_packet(&avpkt);
1865         avpkt.data = NULL;
1866         avpkt.size = 0;
1867         goto handle_eof;
1868     } else {
1869         avpkt = *pkt;
1870     }
1871
1872     if (pkt->dts != AV_NOPTS_VALUE) {
1873         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1874         if (ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
1875             ist->next_pts = ist->pts = ist->dts;
1876     }
1877
1878     // while we have more to decode or while the decoder did output something on EOF
1879     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
1880         int duration;
1881     handle_eof:
1882
1883         ist->pts = ist->next_pts;
1884         ist->dts = ist->next_dts;
1885
1886         if (avpkt.size && avpkt.size != pkt->size) {
1887             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
1888                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1889             ist->showed_multi_packet_warning = 1;
1890         }
1891
1892         switch (ist->st->codec->codec_type) {
1893         case AVMEDIA_TYPE_AUDIO:
1894             ret = decode_audio    (ist, &avpkt, &got_output);
1895             break;
1896         case AVMEDIA_TYPE_VIDEO:
1897             ret = decode_video    (ist, &avpkt, &got_output);
1898             if (avpkt.duration) {
1899                 duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
1900             } else if(ist->st->codec->time_base.num != 0 && ist->st->codec->time_base.den != 0) {
1901                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1902                 duration = ((int64_t)AV_TIME_BASE *
1903                                 ist->st->codec->time_base.num * ticks) /
1904                                 ist->st->codec->time_base.den;
1905             } else
1906                 duration = 0;
1907
1908             if(ist->dts != AV_NOPTS_VALUE && duration) {
1909                 ist->next_dts += duration;
1910             }else
1911                 ist->next_dts = AV_NOPTS_VALUE;
1912
1913             if (got_output)
1914                 ist->next_pts += duration; //FIXME the duration is not correct in some cases
1915             break;
1916         case AVMEDIA_TYPE_SUBTITLE:
1917             ret = transcode_subtitles(ist, &avpkt, &got_output);
1918             break;
1919         default:
1920             return -1;
1921         }
1922
1923         if (ret < 0)
1924             return ret;
1925
1926         avpkt.dts=
1927         avpkt.pts= AV_NOPTS_VALUE;
1928
1929         // touch data and size only if not EOF
1930         if (pkt) {
1931             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
1932                 ret = avpkt.size;
1933             avpkt.data += ret;
1934             avpkt.size -= ret;
1935         }
1936         if (!got_output) {
1937             continue;
1938         }
1939     }
1940
1941     /* handle stream copy */
1942     if (!ist->decoding_needed) {
1943         ist->dts = ist->next_dts;
1944         switch (ist->st->codec->codec_type) {
1945         case AVMEDIA_TYPE_AUDIO:
1946             ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1947                              ist->st->codec->sample_rate;
1948             break;
1949         case AVMEDIA_TYPE_VIDEO:
1950             if (ist->framerate.num) {
1951                 // TODO: Remove work-around for c99-to-c89 issue 7
1952                 AVRational time_base_q = AV_TIME_BASE_Q;
1953                 int64_t next_dts = av_rescale_q(ist->next_dts, time_base_q, av_inv_q(ist->framerate));
1954                 ist->next_dts = av_rescale_q(next_dts + 1, av_inv_q(ist->framerate), time_base_q);
1955             } else if (pkt->duration) {
1956                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
1957             } else if(ist->st->codec->time_base.num != 0) {
1958                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
1959                 ist->next_dts += ((int64_t)AV_TIME_BASE *
1960                                   ist->st->codec->time_base.num * ticks) /
1961                                   ist->st->codec->time_base.den;
1962             }
1963             break;
1964         }
1965         ist->pts = ist->dts;
1966         ist->next_pts = ist->next_dts;
1967     }
1968     for (i = 0; pkt && i < nb_output_streams; i++) {
1969         OutputStream *ost = output_streams[i];
1970
1971         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
1972             continue;
1973
1974         do_streamcopy(ist, ost, pkt);
1975     }
1976
1977     return 0;
1978 }
1979
1980 static void print_sdp(void)
1981 {
1982     char sdp[16384];
1983     int i;
1984     AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
1985
1986     if (!avc)
1987         exit_program(1);
1988     for (i = 0; i < nb_output_files; i++)
1989         avc[i] = output_files[i]->ctx;
1990
1991     av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
1992     printf("SDP:\n%s\n", sdp);
1993     fflush(stdout);
1994     av_freep(&avc);
1995 }
1996
1997 static const HWAccel *get_hwaccel(enum AVPixelFormat pix_fmt)
1998 {
1999     int i;
2000     for (i = 0; hwaccels[i].name; i++)
2001         if (hwaccels[i].pix_fmt == pix_fmt)
2002             return &hwaccels[i];
2003     return NULL;
2004 }
2005
2006 static enum AVPixelFormat get_format(AVCodecContext *s, const enum AVPixelFormat *pix_fmts)
2007 {
2008     InputStream *ist = s->opaque;
2009     const enum AVPixelFormat *p;
2010     int ret;
2011
2012     for (p = pix_fmts; *p != -1; p++) {
2013         const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(*p);
2014         const HWAccel *hwaccel;
2015
2016         if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL))
2017             break;
2018
2019         hwaccel = get_hwaccel(*p);
2020         if (!hwaccel ||
2021             (ist->active_hwaccel_id && ist->active_hwaccel_id != hwaccel->id) ||
2022             (ist->hwaccel_id != HWACCEL_AUTO && ist->hwaccel_id != hwaccel->id))
2023             continue;
2024
2025         ret = hwaccel->init(s);
2026         if (ret < 0) {
2027             if (ist->hwaccel_id == hwaccel->id) {
2028                 av_log(NULL, AV_LOG_FATAL,
2029                        "%s hwaccel requested for input stream #%d:%d, "
2030                        "but cannot be initialized.\n", hwaccel->name,
2031                        ist->file_index, ist->st->index);
2032                 exit_program(1);
2033             }
2034             continue;
2035         }
2036         ist->active_hwaccel_id = hwaccel->id;
2037         ist->hwaccel_pix_fmt   = *p;
2038         break;
2039     }
2040
2041     return *p;
2042 }
2043
2044 static int get_buffer(AVCodecContext *s, AVFrame *frame, int flags)
2045 {
2046     InputStream *ist = s->opaque;
2047
2048     if (ist->hwaccel_get_buffer && frame->format == ist->hwaccel_pix_fmt)
2049         return ist->hwaccel_get_buffer(s, frame, flags);
2050
2051     return avcodec_default_get_buffer2(s, frame, flags);
2052 }
2053
2054 static int init_input_stream(int ist_index, char *error, int error_len)
2055 {
2056     int ret;
2057     InputStream *ist = input_streams[ist_index];
2058
2059     if (ist->decoding_needed) {
2060         AVCodec *codec = ist->dec;
2061         if (!codec) {
2062             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
2063                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
2064             return AVERROR(EINVAL);
2065         }
2066
2067         ist->st->codec->opaque      = ist;
2068         ist->st->codec->get_format  = get_format;
2069         ist->st->codec->get_buffer2 = get_buffer;
2070         ist->st->codec->thread_safe_callbacks = 1;
2071
2072         av_opt_set_int(ist->st->codec, "refcounted_frames", 1, 0);
2073
2074         if (!av_dict_get(ist->opts, "threads", NULL, 0))
2075             av_dict_set(&ist->opts, "threads", "auto", 0);
2076         if ((ret = avcodec_open2(ist->st->codec, codec, &ist->opts)) < 0) {
2077             char errbuf[128];
2078             if (ret == AVERROR_EXPERIMENTAL)
2079                 abort_codec_experimental(codec, 0);
2080
2081             av_strerror(ret, errbuf, sizeof(errbuf));
2082
2083             snprintf(error, error_len,
2084                      "Error while opening decoder for input stream "
2085                      "#%d:%d : %s",
2086                      ist->file_index, ist->st->index, errbuf);
2087             return ret;
2088         }
2089         assert_avoptions(ist->opts);
2090     }
2091
2092     ist->next_pts = AV_NOPTS_VALUE;
2093     ist->next_dts = AV_NOPTS_VALUE;
2094     ist->is_start = 1;
2095
2096     return 0;
2097 }
2098
2099 static InputStream *get_input_stream(OutputStream *ost)
2100 {
2101     if (ost->source_index >= 0)
2102         return input_streams[ost->source_index];
2103     return NULL;
2104 }
2105
2106 static int compare_int64(const void *a, const void *b)
2107 {
2108     int64_t va = *(int64_t *)a, vb = *(int64_t *)b;
2109     return va < vb ? -1 : va > vb ? +1 : 0;
2110 }
2111
2112 static void parse_forced_key_frames(char *kf, OutputStream *ost,
2113                                     AVCodecContext *avctx)
2114 {
2115     char *p;
2116     int n = 1, i, size, index = 0;
2117     int64_t t, *pts;
2118
2119     for (p = kf; *p; p++)
2120         if (*p == ',')
2121             n++;
2122     size = n;
2123     pts = av_malloc(sizeof(*pts) * size);
2124     if (!pts) {
2125         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
2126         exit_program(1);
2127     }
2128
2129     p = kf;
2130     for (i = 0; i < n; i++) {
2131         char *next = strchr(p, ',');
2132
2133         if (next)
2134             *next++ = 0;
2135
2136         if (!memcmp(p, "chapters", 8)) {
2137
2138             AVFormatContext *avf = output_files[ost->file_index]->ctx;
2139             int j;
2140
2141             if (avf->nb_chapters > INT_MAX - size ||
2142                 !(pts = av_realloc_f(pts, size += avf->nb_chapters - 1,
2143                                      sizeof(*pts)))) {
2144                 av_log(NULL, AV_LOG_FATAL,
2145                        "Could not allocate forced key frames array.\n");
2146                 exit_program(1);
2147             }
2148             t = p[8] ? parse_time_or_die("force_key_frames", p + 8, 1) : 0;
2149             t = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
2150
2151             for (j = 0; j < avf->nb_chapters; j++) {
2152                 AVChapter *c = avf->chapters[j];
2153                 av_assert1(index < size);
2154                 pts[index++] = av_rescale_q(c->start, c->time_base,
2155                                             avctx->time_base) + t;
2156             }
2157
2158         } else {
2159
2160             t = parse_time_or_die("force_key_frames", p, 1);
2161             av_assert1(index < size);
2162             pts[index++] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
2163
2164         }
2165
2166         p = next;
2167     }
2168
2169     av_assert0(index == size);
2170     qsort(pts, size, sizeof(*pts), compare_int64);
2171     ost->forced_kf_count = size;
2172     ost->forced_kf_pts   = pts;
2173 }
2174
2175 static void report_new_stream(int input_index, AVPacket *pkt)
2176 {
2177     InputFile *file = input_files[input_index];
2178     AVStream *st = file->ctx->streams[pkt->stream_index];
2179
2180     if (pkt->stream_index < file->nb_streams_warn)
2181         return;
2182     av_log(file->ctx, AV_LOG_WARNING,
2183            "New %s stream %d:%d at pos:%"PRId64" and DTS:%ss\n",
2184            av_get_media_type_string(st->codec->codec_type),
2185            input_index, pkt->stream_index,
2186            pkt->pos, av_ts2timestr(pkt->dts, &st->time_base));
2187     file->nb_streams_warn = pkt->stream_index + 1;
2188 }
2189
2190 static int transcode_init(void)
2191 {
2192     int ret = 0, i, j, k;
2193     AVFormatContext *oc;
2194     AVCodecContext *codec;
2195     OutputStream *ost;
2196     InputStream *ist;
2197     char error[1024];
2198     int want_sdp = 1;
2199
2200     for (i = 0; i < nb_filtergraphs; i++) {
2201         FilterGraph *fg = filtergraphs[i];
2202         for (j = 0; j < fg->nb_outputs; j++) {
2203             OutputFilter *ofilter = fg->outputs[j];
2204             if (!ofilter->ost || ofilter->ost->source_index >= 0)
2205                 continue;
2206             if (fg->nb_inputs != 1)
2207                 continue;
2208             for (k = nb_input_streams-1; k >= 0 ; k--)
2209                 if (fg->inputs[0]->ist == input_streams[k])
2210                     break;
2211             ofilter->ost->source_index = k;
2212         }
2213     }
2214
2215     /* init framerate emulation */
2216     for (i = 0; i < nb_input_files; i++) {
2217         InputFile *ifile = input_files[i];
2218         if (ifile->rate_emu)
2219             for (j = 0; j < ifile->nb_streams; j++)
2220                 input_streams[j + ifile->ist_index]->start = av_gettime();
2221     }
2222
2223     /* output stream init */
2224     for (i = 0; i < nb_output_files; i++) {
2225         oc = output_files[i]->ctx;
2226         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2227             av_dump_format(oc, i, oc->filename, 1);
2228             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2229             return AVERROR(EINVAL);
2230         }
2231     }
2232
2233     /* init complex filtergraphs */
2234     for (i = 0; i < nb_filtergraphs; i++)
2235         if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
2236             return ret;
2237
2238     /* for each output stream, we compute the right encoding parameters */
2239     for (i = 0; i < nb_output_streams; i++) {
2240         AVCodecContext *icodec = NULL;
2241         ost = output_streams[i];
2242         oc  = output_files[ost->file_index]->ctx;
2243         ist = get_input_stream(ost);
2244
2245         if (ost->attachment_filename)
2246             continue;
2247
2248         codec  = ost->st->codec;
2249
2250         if (ist) {
2251             icodec = ist->st->codec;
2252
2253             ost->st->disposition          = ist->st->disposition;
2254             codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
2255             codec->chroma_sample_location = icodec->chroma_sample_location;
2256         } else {
2257             for (j=0; j<oc->nb_streams; j++) {
2258                 AVStream *st = oc->streams[j];
2259                 if (st != ost->st && st->codec->codec_type == codec->codec_type)
2260                     break;
2261             }
2262             if (j == oc->nb_streams)
2263                 if (codec->codec_type == AVMEDIA_TYPE_AUDIO || codec->codec_type == AVMEDIA_TYPE_VIDEO)
2264                     ost->st->disposition = AV_DISPOSITION_DEFAULT;
2265         }
2266
2267         if (ost->stream_copy) {
2268             AVRational sar;
2269             uint64_t extra_size;
2270
2271             av_assert0(ist && !ost->filter);
2272
2273             extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2274
2275             if (extra_size > INT_MAX) {
2276                 return AVERROR(EINVAL);
2277             }
2278
2279             /* if stream_copy is selected, no need to decode or encode */
2280             codec->codec_id   = icodec->codec_id;
2281             codec->codec_type = icodec->codec_type;
2282
2283             if (!codec->codec_tag) {
2284                 unsigned int codec_tag;
2285                 if (!oc->oformat->codec_tag ||
2286                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2287                      !av_codec_get_tag2(oc->oformat->codec_tag, icodec->codec_id, &codec_tag))
2288                     codec->codec_tag = icodec->codec_tag;
2289             }
2290
2291             codec->bit_rate       = icodec->bit_rate;
2292             codec->rc_max_rate    = icodec->rc_max_rate;
2293             codec->rc_buffer_size = icodec->rc_buffer_size;
2294             codec->field_order    = icodec->field_order;
2295             codec->extradata      = av_mallocz(extra_size);
2296             if (!codec->extradata) {
2297                 return AVERROR(ENOMEM);
2298             }
2299             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2300             codec->extradata_size= icodec->extradata_size;
2301             codec->bits_per_coded_sample  = icodec->bits_per_coded_sample;
2302
2303             codec->time_base = ist->st->time_base;
2304             /*
2305              * Avi is a special case here because it supports variable fps but
2306              * having the fps and timebase differe significantly adds quite some
2307              * overhead
2308              */
2309             if(!strcmp(oc->oformat->name, "avi")) {
2310                 if ( copy_tb<0 && av_q2d(ist->st->r_frame_rate) >= av_q2d(ist->st->avg_frame_rate)
2311                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(ist->st->time_base)
2312                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(icodec->time_base)
2313                                && av_q2d(ist->st->time_base) < 1.0/500 && av_q2d(icodec->time_base) < 1.0/500
2314                      || copy_tb==2){
2315                     codec->time_base.num = ist->st->r_frame_rate.den;
2316                     codec->time_base.den = 2*ist->st->r_frame_rate.num;
2317                     codec->ticks_per_frame = 2;
2318                 } else if (   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2319                                  && av_q2d(ist->st->time_base) < 1.0/500
2320                     || copy_tb==0){
2321                     codec->time_base = icodec->time_base;
2322                     codec->time_base.num *= icodec->ticks_per_frame;
2323                     codec->time_base.den *= 2;
2324                     codec->ticks_per_frame = 2;
2325                 }
2326             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2327                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2328                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2329                       && strcmp(oc->oformat->name, "f4v")
2330             ) {
2331                 if(   copy_tb<0 && icodec->time_base.den
2332                                 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
2333                                 && av_q2d(ist->st->time_base) < 1.0/500
2334                    || copy_tb==0){
2335                     codec->time_base = icodec->time_base;
2336                     codec->time_base.num *= icodec->ticks_per_frame;
2337                 }
2338             }
2339             if (   codec->codec_tag == AV_RL32("tmcd")
2340                 && icodec->time_base.num < icodec->time_base.den
2341                 && icodec->time_base.num > 0
2342                 && 121LL*icodec->time_base.num > icodec->time_base.den) {
2343                 codec->time_base = icodec->time_base;
2344             }
2345
2346             if (ist && !ost->frame_rate.num)
2347                 ost->frame_rate = ist->framerate;
2348             if(ost->frame_rate.num)
2349                 codec->time_base = av_inv_q(ost->frame_rate);
2350
2351             av_reduce(&codec->time_base.num, &codec->time_base.den,
2352                         codec->time_base.num, codec->time_base.den, INT_MAX);
2353
2354             ost->parser = av_parser_init(codec->codec_id);
2355
2356             switch (codec->codec_type) {
2357             case AVMEDIA_TYPE_AUDIO:
2358                 if (audio_volume != 256) {
2359                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2360                     exit_program(1);
2361                 }
2362                 codec->channel_layout     = icodec->channel_layout;
2363                 codec->sample_rate        = icodec->sample_rate;
2364                 codec->channels           = icodec->channels;
2365                 codec->frame_size         = icodec->frame_size;
2366                 codec->audio_service_type = icodec->audio_service_type;
2367                 codec->block_align        = icodec->block_align;
2368                 if((codec->block_align == 1 || codec->block_align == 1152 || codec->block_align == 576) && codec->codec_id == AV_CODEC_ID_MP3)
2369                     codec->block_align= 0;
2370                 if(codec->codec_id == AV_CODEC_ID_AC3)
2371                     codec->block_align= 0;
2372                 break;
2373             case AVMEDIA_TYPE_VIDEO:
2374                 codec->pix_fmt            = icodec->pix_fmt;
2375                 codec->width              = icodec->width;
2376                 codec->height             = icodec->height;
2377                 codec->has_b_frames       = icodec->has_b_frames;
2378                 if (ost->frame_aspect_ratio.num) { // overridden by the -aspect cli option
2379                     sar =
2380                         av_mul_q(ost->frame_aspect_ratio,
2381                                  (AVRational){ codec->height, codec->width });
2382                     av_log(NULL, AV_LOG_WARNING, "Overriding aspect ratio "
2383                            "with stream copy may produce invalid files\n");
2384                 }
2385                 else if (ist->st->sample_aspect_ratio.num)
2386                     sar = ist->st->sample_aspect_ratio;
2387                 else
2388                     sar = icodec->sample_aspect_ratio;
2389                 ost->st->sample_aspect_ratio = codec->sample_aspect_ratio = sar;
2390                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2391                 break;
2392             case AVMEDIA_TYPE_SUBTITLE:
2393                 codec->width  = icodec->width;
2394                 codec->height = icodec->height;
2395                 break;
2396             case AVMEDIA_TYPE_DATA:
2397             case AVMEDIA_TYPE_ATTACHMENT:
2398                 break;
2399             default:
2400                 abort();
2401             }
2402         } else {
2403             if (!ost->enc)
2404                 ost->enc = avcodec_find_encoder(codec->codec_id);
2405             if (!ost->enc) {
2406                 /* should only happen when a default codec is not present. */
2407                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
2408                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2409                 ret = AVERROR(EINVAL);
2410                 goto dump_format;
2411             }
2412
2413             if (ist)
2414                 ist->decoding_needed++;
2415             ost->encoding_needed = 1;
2416
2417             if (!ost->filter &&
2418                 (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2419                  codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
2420                     FilterGraph *fg;
2421                     fg = init_simple_filtergraph(ist, ost);
2422                     if (configure_filtergraph(fg)) {
2423                         av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2424                         exit_program(1);
2425                     }
2426             }
2427
2428             if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2429                 if (ost->filter && !ost->frame_rate.num)
2430                     ost->frame_rate = av_buffersink_get_frame_rate(ost->filter->filter);
2431                 if (ist && !ost->frame_rate.num)
2432                     ost->frame_rate = ist->framerate;
2433                 if (ist && !ost->frame_rate.num)
2434                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25, 1};
2435 //                    ost->frame_rate = ist->st->avg_frame_rate.num ? ist->st->avg_frame_rate : (AVRational){25, 1};
2436                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2437                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2438                     ost->frame_rate = ost->enc->supported_framerates[idx];
2439                 }
2440             }
2441
2442             switch (codec->codec_type) {
2443             case AVMEDIA_TYPE_AUDIO:
2444                 codec->sample_fmt     = ost->filter->filter->inputs[0]->format;
2445                 codec->sample_rate    = ost->filter->filter->inputs[0]->sample_rate;
2446                 codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
2447                 codec->channels       = avfilter_link_get_channels(ost->filter->filter->inputs[0]);
2448                 codec->time_base      = (AVRational){ 1, codec->sample_rate };
2449                 break;
2450             case AVMEDIA_TYPE_VIDEO:
2451                 codec->time_base = av_inv_q(ost->frame_rate);
2452                 if (ost->filter && !(codec->time_base.num && codec->time_base.den))
2453                     codec->time_base = ost->filter->filter->inputs[0]->time_base;
2454                 if (   av_q2d(codec->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
2455                    && (video_sync_method == VSYNC_CFR || video_sync_method == VSYNC_VSCFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
2456                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
2457                                                "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
2458                 }
2459                 for (j = 0; j < ost->forced_kf_count; j++)
2460                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2461                                                          AV_TIME_BASE_Q,
2462                                                          codec->time_base);
2463
2464                 codec->width  = ost->filter->filter->inputs[0]->w;
2465                 codec->height = ost->filter->filter->inputs[0]->h;
2466                 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
2467                     ost->frame_aspect_ratio.num ? // overridden by the -aspect cli option
2468                     av_mul_q(ost->frame_aspect_ratio, (AVRational){ codec->height, codec->width }) :
2469                     ost->filter->filter->inputs[0]->sample_aspect_ratio;
2470                 if (!strncmp(ost->enc->name, "libx264", 7) &&
2471                     codec->pix_fmt == AV_PIX_FMT_NONE &&
2472                     ost->filter->filter->inputs[0]->format != AV_PIX_FMT_YUV420P)
2473                     av_log(NULL, AV_LOG_WARNING,
2474                            "No pixel format specified, %s for H.264 encoding chosen.\n"
2475                            "Use -pix_fmt yuv420p for compatibility with outdated media players.\n",
2476                            av_get_pix_fmt_name(ost->filter->filter->inputs[0]->format));
2477                 if (!strncmp(ost->enc->name, "mpeg2video", 10) &&
2478                     codec->pix_fmt == AV_PIX_FMT_NONE &&
2479                     ost->filter->filter->inputs[0]->format != AV_PIX_FMT_YUV420P)
2480                     av_log(NULL, AV_LOG_WARNING,
2481                            "No pixel format specified, %s for MPEG-2 encoding chosen.\n"
2482                            "Use -pix_fmt yuv420p for compatibility with outdated media players.\n",
2483                            av_get_pix_fmt_name(ost->filter->filter->inputs[0]->format));
2484                 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
2485
2486                 if (!icodec ||
2487                     codec->width   != icodec->width  ||
2488                     codec->height  != icodec->height ||
2489                     codec->pix_fmt != icodec->pix_fmt) {
2490                     codec->bits_per_raw_sample = frame_bits_per_raw_sample;
2491                 }
2492
2493                 if (ost->forced_keyframes) {
2494                     if (!strncmp(ost->forced_keyframes, "expr:", 5)) {
2495                         ret = av_expr_parse(&ost->forced_keyframes_pexpr, ost->forced_keyframes+5,
2496                                             forced_keyframes_const_names, NULL, NULL, NULL, NULL, 0, NULL);
2497                         if (ret < 0) {
2498                             av_log(NULL, AV_LOG_ERROR,
2499                                    "Invalid force_key_frames expression '%s'\n", ost->forced_keyframes+5);
2500                             return ret;
2501                         }
2502                         ost->forced_keyframes_expr_const_values[FKF_N] = 0;
2503                         ost->forced_keyframes_expr_const_values[FKF_N_FORCED] = 0;
2504                         ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] = NAN;
2505                         ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] = NAN;
2506                     } else {
2507                         parse_forced_key_frames(ost->forced_keyframes, ost, ost->st->codec);
2508                     }
2509                 }
2510                 break;
2511             case AVMEDIA_TYPE_SUBTITLE:
2512                 codec->time_base = (AVRational){1, 1000};
2513                 if (!codec->width) {
2514                     codec->width     = input_streams[ost->source_index]->st->codec->width;
2515                     codec->height    = input_streams[ost->source_index]->st->codec->height;
2516                 }
2517                 break;
2518             default:
2519                 abort();
2520                 break;
2521             }
2522             /* two pass mode */
2523             if (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
2524                 char logfilename[1024];
2525                 FILE *f;
2526
2527                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2528                          ost->logfile_prefix ? ost->logfile_prefix :
2529                                                DEFAULT_PASS_LOGFILENAME_PREFIX,
2530                          i);
2531                 if (!strcmp(ost->enc->name, "libx264")) {
2532                     av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
2533                 } else {
2534                     if (codec->flags & CODEC_FLAG_PASS2) {
2535                         char  *logbuffer;
2536                         size_t logbuffer_size;
2537                         if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2538                             av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2539                                    logfilename);
2540                             exit_program(1);
2541                         }
2542                         codec->stats_in = logbuffer;
2543                     }
2544                     if (codec->flags & CODEC_FLAG_PASS1) {
2545                         f = av_fopen_utf8(logfilename, "wb");
2546                         if (!f) {
2547                             av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2548                                 logfilename, strerror(errno));
2549                             exit_program(1);
2550                         }
2551                         ost->logfile = f;
2552                     }
2553                 }
2554             }
2555         }
2556     }
2557
2558     /* open each encoder */
2559     for (i = 0; i < nb_output_streams; i++) {
2560         ost = output_streams[i];
2561         if (ost->encoding_needed) {
2562             AVCodec      *codec = ost->enc;
2563             AVCodecContext *dec = NULL;
2564
2565             if ((ist = get_input_stream(ost)))
2566                 dec = ist->st->codec;
2567             if (dec && dec->subtitle_header) {
2568                 /* ASS code assumes this buffer is null terminated so add extra byte. */
2569                 ost->st->codec->subtitle_header = av_mallocz(dec->subtitle_header_size + 1);
2570                 if (!ost->st->codec->subtitle_header) {
2571                     ret = AVERROR(ENOMEM);
2572                     goto dump_format;
2573                 }
2574                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2575                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2576             }
2577             if (!av_dict_get(ost->opts, "threads", NULL, 0))
2578                 av_dict_set(&ost->opts, "threads", "auto", 0);
2579             if ((ret = avcodec_open2(ost->st->codec, codec, &ost->opts)) < 0) {
2580                 if (ret == AVERROR_EXPERIMENTAL)
2581                     abort_codec_experimental(codec, 1);
2582                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2583                         ost->file_index, ost->index);
2584                 goto dump_format;
2585             }
2586             if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
2587                 !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
2588                 av_buffersink_set_frame_size(ost->filter->filter,
2589                                              ost->st->codec->frame_size);
2590             assert_avoptions(ost->opts);
2591             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2592                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2593                                              " It takes bits/s as argument, not kbits/s\n");
2594             extra_size += ost->st->codec->extradata_size;
2595         } else {
2596             av_opt_set_dict(ost->st->codec, &ost->opts);
2597         }
2598     }
2599
2600     /* init input streams */
2601     for (i = 0; i < nb_input_streams; i++)
2602         if ((ret = init_input_stream(i, error, sizeof(error))) < 0) {
2603             for (i = 0; i < nb_output_streams; i++) {
2604                 ost = output_streams[i];
2605                 avcodec_close(ost->st->codec);
2606             }
2607             goto dump_format;
2608         }
2609
2610     /* discard unused programs */
2611     for (i = 0; i < nb_input_files; i++) {
2612         InputFile *ifile = input_files[i];
2613         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2614             AVProgram *p = ifile->ctx->programs[j];
2615             int discard  = AVDISCARD_ALL;
2616
2617             for (k = 0; k < p->nb_stream_indexes; k++)
2618                 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
2619                     discard = AVDISCARD_DEFAULT;
2620                     break;
2621                 }
2622             p->discard = discard;
2623         }
2624     }
2625
2626     /* open files and write file headers */
2627     for (i = 0; i < nb_output_files; i++) {
2628         oc = output_files[i]->ctx;
2629         oc->interrupt_callback = int_cb;
2630         if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
2631             char errbuf[128];
2632             av_strerror(ret, errbuf, sizeof(errbuf));
2633             snprintf(error, sizeof(error),
2634                      "Could not write header for output file #%d "
2635                      "(incorrect codec parameters ?): %s",
2636                      i, errbuf);
2637             ret = AVERROR(EINVAL);
2638             goto dump_format;
2639         }
2640 //         assert_avoptions(output_files[i]->opts);
2641         if (strcmp(oc->oformat->name, "rtp")) {
2642             want_sdp = 0;
2643         }
2644     }
2645
2646  dump_format:
2647     /* dump the file output parameters - cannot be done before in case
2648        of stream copy */
2649     for (i = 0; i < nb_output_files; i++) {
2650         av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
2651     }
2652
2653     /* dump the stream mapping */
2654     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2655     for (i = 0; i < nb_input_streams; i++) {
2656         ist = input_streams[i];
2657
2658         for (j = 0; j < ist->nb_filters; j++) {
2659             if (ist->filters[j]->graph->graph_desc) {
2660                 av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
2661                        ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
2662                        ist->filters[j]->name);
2663                 if (nb_filtergraphs > 1)
2664                     av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
2665                 av_log(NULL, AV_LOG_INFO, "\n");
2666             }
2667         }
2668     }
2669
2670     for (i = 0; i < nb_output_streams; i++) {
2671         ost = output_streams[i];
2672
2673         if (ost->attachment_filename) {
2674             /* an attached file */
2675             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
2676                    ost->attachment_filename, ost->file_index, ost->index);
2677             continue;
2678         }
2679
2680         if (ost->filter && ost->filter->graph->graph_desc) {
2681             /* output from a complex graph */
2682             av_log(NULL, AV_LOG_INFO, "  %s", ost->filter->name);
2683             if (nb_filtergraphs > 1)
2684                 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
2685
2686             av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
2687                    ost->index, ost->enc ? ost->enc->name : "?");
2688             continue;
2689         }
2690
2691         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
2692                input_streams[ost->source_index]->file_index,
2693                input_streams[ost->source_index]->st->index,
2694                ost->file_index,
2695                ost->index);
2696         if (ost->sync_ist != input_streams[ost->source_index])
2697             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2698                    ost->sync_ist->file_index,
2699                    ost->sync_ist->st->index);
2700         if (ost->stream_copy)
2701             av_log(NULL, AV_LOG_INFO, " (copy)");
2702         else
2703             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
2704                    input_streams[ost->source_index]->dec->name : "?",
2705                    ost->enc ? ost->enc->name : "?");
2706         av_log(NULL, AV_LOG_INFO, "\n");
2707     }
2708
2709     if (ret) {
2710         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2711         return ret;
2712     }
2713
2714     if (want_sdp) {
2715         print_sdp();
2716     }
2717
2718     return 0;
2719 }
2720
2721 /* Return 1 if there remain streams where more output is wanted, 0 otherwise. */
2722 static int need_output(void)
2723 {
2724     int i;
2725
2726     for (i = 0; i < nb_output_streams; i++) {
2727         OutputStream *ost    = output_streams[i];
2728         OutputFile *of       = output_files[ost->file_index];
2729         AVFormatContext *os  = output_files[ost->file_index]->ctx;
2730
2731         if (ost->finished ||
2732             (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2733             continue;
2734         if (ost->frame_number >= ost->max_frames) {
2735             int j;
2736             for (j = 0; j < of->ctx->nb_streams; j++)
2737                 close_output_stream(output_streams[of->ost_index + j]);
2738             continue;
2739         }
2740
2741         return 1;
2742     }
2743
2744     return 0;
2745 }
2746
2747 /**
2748  * Select the output stream to process.
2749  *
2750  * @return  selected output stream, or NULL if none available
2751  */
2752 static OutputStream *choose_output(void)
2753 {
2754     int i;
2755     int64_t opts_min = INT64_MAX;
2756     OutputStream *ost_min = NULL;
2757
2758     for (i = 0; i < nb_output_streams; i++) {
2759         OutputStream *ost = output_streams[i];
2760         int64_t opts = av_rescale_q(ost->st->cur_dts, ost->st->time_base,
2761                                     AV_TIME_BASE_Q);
2762         if (!ost->unavailable && !ost->finished && opts < opts_min) {
2763             opts_min = opts;
2764             ost_min  = ost;
2765         }
2766     }
2767     return ost_min;
2768 }
2769
2770 static int check_keyboard_interaction(int64_t cur_time)
2771 {
2772     int i, ret, key;
2773     static int64_t last_time;
2774     if (received_nb_signals)
2775         return AVERROR_EXIT;
2776     /* read_key() returns 0 on EOF */
2777     if(cur_time - last_time >= 100000 && !run_as_daemon){
2778         key =  read_key();
2779         last_time = cur_time;
2780     }else
2781         key = -1;
2782     if (key == 'q')
2783         return AVERROR_EXIT;
2784     if (key == '+') av_log_set_level(av_log_get_level()+10);
2785     if (key == '-') av_log_set_level(av_log_get_level()-10);
2786     if (key == 's') qp_hist     ^= 1;
2787     if (key == 'h'){
2788         if (do_hex_dump){
2789             do_hex_dump = do_pkt_dump = 0;
2790         } else if(do_pkt_dump){
2791             do_hex_dump = 1;
2792         } else
2793             do_pkt_dump = 1;
2794         av_log_set_level(AV_LOG_DEBUG);
2795     }
2796     if (key == 'c' || key == 'C'){
2797         char buf[4096], target[64], command[256], arg[256] = {0};
2798         double time;
2799         int k, n = 0;
2800         fprintf(stderr, "\nEnter command: <target>|all <time>|-1 <command>[ <argument>]\n");
2801         i = 0;
2802         while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
2803             if (k > 0)
2804                 buf[i++] = k;
2805         buf[i] = 0;
2806         if (k > 0 &&
2807             (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
2808             av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
2809                    target, time, command, arg);
2810             for (i = 0; i < nb_filtergraphs; i++) {
2811                 FilterGraph *fg = filtergraphs[i];
2812                 if (fg->graph) {
2813                     if (time < 0) {
2814                         ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
2815                                                           key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
2816                         fprintf(stderr, "Command reply for stream %d: ret:%d res:\n%s", i, ret, buf);
2817                     } else if (key == 'c') {
2818                         fprintf(stderr, "Queing commands only on filters supporting the specific command is unsupported\n");
2819                         ret = AVERROR_PATCHWELCOME;
2820                     } else {
2821                         ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
2822                     }
2823                 }
2824             }
2825         } else {
2826             av_log(NULL, AV_LOG_ERROR,
2827                    "Parse error, at least 3 arguments were expected, "
2828                    "only %d given in string '%s'\n", n, buf);
2829         }
2830     }
2831     if (key == 'd' || key == 'D'){
2832         int debug=0;
2833         if(key == 'D') {
2834             debug = input_streams[0]->st->codec->debug<<1;
2835             if(!debug) debug = 1;
2836             while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2837                 debug += debug;
2838         }else
2839             if(scanf("%d", &debug)!=1)
2840                 fprintf(stderr,"error parsing debug value\n");
2841         for(i=0;i<nb_input_streams;i++) {
2842             input_streams[i]->st->codec->debug = debug;
2843         }
2844         for(i=0;i<nb_output_streams;i++) {
2845             OutputStream *ost = output_streams[i];
2846             ost->st->codec->debug = debug;
2847         }
2848         if(debug) av_log_set_level(AV_LOG_DEBUG);
2849         fprintf(stderr,"debug=%d\n", debug);
2850     }
2851     if (key == '?'){
2852         fprintf(stderr, "key    function\n"
2853                         "?      show this help\n"
2854                         "+      increase verbosity\n"
2855                         "-      decrease verbosity\n"
2856                         "c      Send command to first matching filter supporting it\n"
2857                         "C      Send/Que command to all matching filters\n"
2858                         "D      cycle through available debug modes\n"
2859                         "h      dump packets/hex press to cycle through the 3 states\n"
2860                         "q      quit\n"
2861                         "s      Show QP histogram\n"
2862         );
2863     }
2864     return 0;
2865 }
2866
2867 #if HAVE_PTHREADS
2868 static void *input_thread(void *arg)
2869 {
2870     InputFile *f = arg;
2871     int ret = 0;
2872
2873     while (!transcoding_finished && ret >= 0) {
2874         AVPacket pkt;
2875         ret = av_read_frame(f->ctx, &pkt);
2876
2877         if (ret == AVERROR(EAGAIN)) {
2878             av_usleep(10000);
2879             ret = 0;
2880             continue;
2881         } else if (ret < 0)
2882             break;
2883
2884         pthread_mutex_lock(&f->fifo_lock);
2885         while (!av_fifo_space(f->fifo))
2886             pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
2887
2888         av_dup_packet(&pkt);
2889         av_fifo_generic_write(f->fifo, &pkt, sizeof(pkt), NULL);
2890
2891         pthread_mutex_unlock(&f->fifo_lock);
2892     }
2893
2894     f->finished = 1;
2895     return NULL;
2896 }
2897
2898 static void free_input_threads(void)
2899 {
2900     int i;
2901
2902     if (nb_input_files == 1)
2903         return;
2904
2905     transcoding_finished = 1;
2906
2907     for (i = 0; i < nb_input_files; i++) {
2908         InputFile *f = input_files[i];
2909         AVPacket pkt;
2910
2911         if (!f->fifo || f->joined)
2912             continue;
2913
2914         pthread_mutex_lock(&f->fifo_lock);
2915         while (av_fifo_size(f->fifo)) {
2916             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2917             av_free_packet(&pkt);
2918         }
2919         pthread_cond_signal(&f->fifo_cond);
2920         pthread_mutex_unlock(&f->fifo_lock);
2921
2922         pthread_join(f->thread, NULL);
2923         f->joined = 1;
2924
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         av_fifo_free(f->fifo);
2930     }
2931 }
2932
2933 static int init_input_threads(void)
2934 {
2935     int i, ret;
2936
2937     if (nb_input_files == 1)
2938         return 0;
2939
2940     for (i = 0; i < nb_input_files; i++) {
2941         InputFile *f = input_files[i];
2942
2943         if (!(f->fifo = av_fifo_alloc(8*sizeof(AVPacket))))
2944             return AVERROR(ENOMEM);
2945
2946         pthread_mutex_init(&f->fifo_lock, NULL);
2947         pthread_cond_init (&f->fifo_cond, NULL);
2948
2949         if ((ret = pthread_create(&f->thread, NULL, input_thread, f)))
2950             return AVERROR(ret);
2951     }
2952     return 0;
2953 }
2954
2955 static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
2956 {
2957     int ret = 0;
2958
2959     pthread_mutex_lock(&f->fifo_lock);
2960
2961     if (av_fifo_size(f->fifo)) {
2962         av_fifo_generic_read(f->fifo, pkt, sizeof(*pkt), NULL);
2963         pthread_cond_signal(&f->fifo_cond);
2964     } else {
2965         if (f->finished)
2966             ret = AVERROR_EOF;
2967         else
2968             ret = AVERROR(EAGAIN);
2969     }
2970
2971     pthread_mutex_unlock(&f->fifo_lock);
2972
2973     return ret;
2974 }
2975 #endif
2976
2977 static int get_input_packet(InputFile *f, AVPacket *pkt)
2978 {
2979     if (f->rate_emu) {
2980         int i;
2981         for (i = 0; i < f->nb_streams; i++) {
2982             InputStream *ist = input_streams[f->ist_index + i];
2983             int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
2984             int64_t now = av_gettime() - ist->start;
2985             if (pts > now)
2986                 return AVERROR(EAGAIN);
2987         }
2988     }
2989
2990 #if HAVE_PTHREADS
2991     if (nb_input_files > 1)
2992         return get_input_packet_mt(f, pkt);
2993 #endif
2994     return av_read_frame(f->ctx, pkt);
2995 }
2996
2997 static int got_eagain(void)
2998 {
2999     int i;
3000     for (i = 0; i < nb_output_streams; i++)
3001         if (output_streams[i]->unavailable)
3002             return 1;
3003     return 0;
3004 }
3005
3006 static void reset_eagain(void)
3007 {
3008     int i;
3009     for (i = 0; i < nb_input_files; i++)
3010         input_files[i]->eagain = 0;
3011     for (i = 0; i < nb_output_streams; i++)
3012         output_streams[i]->unavailable = 0;
3013 }
3014
3015 /*
3016  * Return
3017  * - 0 -- one packet was read and processed
3018  * - AVERROR(EAGAIN) -- no packets were available for selected file,
3019  *   this function should be called again
3020  * - AVERROR_EOF -- this function should not be called again
3021  */
3022 static int process_input(int file_index)
3023 {
3024     InputFile *ifile = input_files[file_index];
3025     AVFormatContext *is;
3026     InputStream *ist;
3027     AVPacket pkt;
3028     int ret, i, j;
3029
3030     is  = ifile->ctx;
3031     ret = get_input_packet(ifile, &pkt);
3032
3033     if (ret == AVERROR(EAGAIN)) {
3034         ifile->eagain = 1;
3035         return ret;
3036     }
3037     if (ret < 0) {
3038         if (ret != AVERROR_EOF) {
3039             print_error(is->filename, ret);
3040             if (exit_on_error)
3041                 exit_program(1);
3042         }
3043         ifile->eof_reached = 1;
3044
3045         for (i = 0; i < ifile->nb_streams; i++) {
3046             ist = input_streams[ifile->ist_index + i];
3047             if (ist->decoding_needed)
3048                 output_packet(ist, NULL);
3049
3050             /* mark all outputs that don't go through lavfi as finished */
3051             for (j = 0; j < nb_output_streams; j++) {
3052                 OutputStream *ost = output_streams[j];
3053
3054                 if (ost->source_index == ifile->ist_index + i &&
3055                     (ost->stream_copy || ost->enc->type == AVMEDIA_TYPE_SUBTITLE))
3056                     close_output_stream(ost);
3057             }
3058         }
3059
3060         return AVERROR(EAGAIN);
3061     }
3062
3063     reset_eagain();
3064
3065     if (do_pkt_dump) {
3066         av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
3067                          is->streams[pkt.stream_index]);
3068     }
3069     /* the following test is needed in case new streams appear
3070        dynamically in stream : we ignore them */
3071     if (pkt.stream_index >= ifile->nb_streams) {
3072         report_new_stream(file_index, &pkt);
3073         goto discard_packet;
3074     }
3075
3076     ist = input_streams[ifile->ist_index + pkt.stream_index];
3077     if (ist->discard)
3078         goto discard_packet;
3079
3080     if (debug_ts) {
3081         av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
3082                "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",
3083                ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
3084                av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &AV_TIME_BASE_Q),
3085                av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &AV_TIME_BASE_Q),
3086                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
3087                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
3088                av_ts2str(input_files[ist->file_index]->ts_offset),
3089                av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
3090     }
3091
3092     if(!ist->wrap_correction_done && is->start_time != AV_NOPTS_VALUE && ist->st->pts_wrap_bits < 64){
3093         int64_t stime, stime2;
3094         // Correcting starttime based on the enabled streams
3095         // 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.
3096         //       so we instead do it here as part of discontinuity handling
3097         if (   ist->next_dts == AV_NOPTS_VALUE
3098             && ifile->ts_offset == -is->start_time
3099             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
3100             int64_t new_start_time = INT64_MAX;
3101             for (i=0; i<is->nb_streams; i++) {
3102                 AVStream *st = is->streams[i];
3103                 if(st->discard == AVDISCARD_ALL || st->start_time == AV_NOPTS_VALUE)
3104                     continue;
3105                 new_start_time = FFMIN(new_start_time, av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q));
3106             }
3107             if (new_start_time > is->start_time) {
3108                 av_log(is, AV_LOG_VERBOSE, "Correcting start time by %"PRId64"\n", new_start_time - is->start_time);
3109                 ifile->ts_offset = -new_start_time;
3110             }
3111         }
3112
3113         stime = av_rescale_q(is->start_time, AV_TIME_BASE_Q, ist->st->time_base);
3114         stime2= stime + (1ULL<<ist->st->pts_wrap_bits);
3115         ist->wrap_correction_done = 1;
3116
3117         if(stime2 > stime && pkt.dts != AV_NOPTS_VALUE && pkt.dts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
3118             pkt.dts -= 1ULL<<ist->st->pts_wrap_bits;
3119             ist->wrap_correction_done = 0;
3120         }
3121         if(stime2 > stime && pkt.pts != AV_NOPTS_VALUE && pkt.pts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
3122             pkt.pts -= 1ULL<<ist->st->pts_wrap_bits;
3123             ist->wrap_correction_done = 0;
3124         }
3125     }
3126
3127     if (pkt.dts != AV_NOPTS_VALUE)
3128         pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
3129     if (pkt.pts != AV_NOPTS_VALUE)
3130         pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
3131
3132     if (pkt.pts != AV_NOPTS_VALUE)
3133         pkt.pts *= ist->ts_scale;
3134     if (pkt.dts != AV_NOPTS_VALUE)
3135         pkt.dts *= ist->ts_scale;
3136
3137     if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts == AV_NOPTS_VALUE && !copy_ts
3138         && (is->iformat->flags & AVFMT_TS_DISCONT) && ifile->last_ts != AV_NOPTS_VALUE) {
3139         int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3140         int64_t delta   = pkt_dts - ifile->last_ts;
3141         if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
3142             (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
3143                 ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)){
3144             ifile->ts_offset -= delta;
3145             av_log(NULL, AV_LOG_DEBUG,
3146                    "Inter stream timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
3147                    delta, ifile->ts_offset);
3148             pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3149             if (pkt.pts != AV_NOPTS_VALUE)
3150                 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3151         }
3152     }
3153
3154     if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE &&
3155         !copy_ts) {
3156         int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3157         int64_t delta   = pkt_dts - ist->next_dts;
3158         if (is->iformat->flags & AVFMT_TS_DISCONT) {
3159         if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
3160             (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
3161                 ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
3162             pkt_dts + AV_TIME_BASE/10 < ist->pts){
3163             ifile->ts_offset -= delta;
3164             av_log(NULL, AV_LOG_DEBUG,
3165                    "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
3166                    delta, ifile->ts_offset);
3167             pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3168             if (pkt.pts != AV_NOPTS_VALUE)
3169                 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3170         }
3171         } else {
3172             if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3173                 (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
3174                ) {
3175                 av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
3176                 pkt.dts = AV_NOPTS_VALUE;
3177             }
3178             if (pkt.pts != AV_NOPTS_VALUE){
3179                 int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
3180                 delta   = pkt_pts - ist->next_dts;
3181                 if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3182                     (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
3183                    ) {
3184                     av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
3185                     pkt.pts = AV_NOPTS_VALUE;
3186                 }
3187             }
3188         }
3189     }
3190
3191     if (pkt.dts != AV_NOPTS_VALUE)
3192         ifile->last_ts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3193
3194     if (debug_ts) {
3195         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",
3196                ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
3197                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
3198                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
3199                av_ts2str(input_files[ist->file_index]->ts_offset),
3200                av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
3201     }
3202
3203     sub2video_heartbeat(ist, pkt.pts);
3204
3205     ret = output_packet(ist, &pkt);
3206     if (ret < 0) {
3207         char buf[128];
3208         av_strerror(ret, buf, sizeof(buf));
3209         av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d: %s\n",
3210                 ist->file_index, ist->st->index, buf);
3211         if (exit_on_error)
3212             exit_program(1);
3213     }
3214
3215 discard_packet:
3216     av_free_packet(&pkt);
3217
3218     return 0;
3219 }
3220
3221 /**
3222  * Perform a step of transcoding for the specified filter graph.
3223  *
3224  * @param[in]  graph     filter graph to consider
3225  * @param[out] best_ist  input stream where a frame would allow to continue
3226  * @return  0 for success, <0 for error
3227  */
3228 static int transcode_from_filter(FilterGraph *graph, InputStream **best_ist)
3229 {
3230     int i, ret;
3231     int nb_requests, nb_requests_max = 0;
3232     InputFilter *ifilter;
3233     InputStream *ist;
3234
3235     *best_ist = NULL;
3236     ret = avfilter_graph_request_oldest(graph->graph);
3237     if (ret >= 0)
3238         return reap_filters();
3239
3240     if (ret == AVERROR_EOF) {
3241         ret = reap_filters();
3242         for (i = 0; i < graph->nb_outputs; i++)
3243             close_output_stream(graph->outputs[i]->ost);
3244         return ret;
3245     }
3246     if (ret != AVERROR(EAGAIN))
3247         return ret;
3248
3249     for (i = 0; i < graph->nb_inputs; i++) {
3250         ifilter = graph->inputs[i];
3251         ist = ifilter->ist;
3252         if (input_files[ist->file_index]->eagain ||
3253             input_files[ist->file_index]->eof_reached)
3254             continue;
3255         nb_requests = av_buffersrc_get_nb_failed_requests(ifilter->filter);
3256         if (nb_requests > nb_requests_max) {
3257             nb_requests_max = nb_requests;
3258             *best_ist = ist;
3259         }
3260     }
3261
3262     if (!*best_ist)
3263         for (i = 0; i < graph->nb_outputs; i++)
3264             graph->outputs[i]->ost->unavailable = 1;
3265
3266     return 0;
3267 }
3268
3269 /**
3270  * Run a single step of transcoding.
3271  *
3272  * @return  0 for success, <0 for error
3273  */
3274 static int transcode_step(void)
3275 {
3276     OutputStream *ost;
3277     InputStream  *ist;
3278     int ret;
3279
3280     ost = choose_output();
3281     if (!ost) {
3282         if (got_eagain()) {
3283             reset_eagain();
3284             av_usleep(10000);
3285             return 0;
3286         }
3287         av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from, finishing.\n");
3288         return AVERROR_EOF;
3289     }
3290
3291     if (ost->filter) {
3292         if ((ret = transcode_from_filter(ost->filter->graph, &ist)) < 0)
3293             return ret;
3294         if (!ist)
3295             return 0;
3296     } else {
3297         av_assert0(ost->source_index >= 0);
3298         ist = input_streams[ost->source_index];
3299     }
3300
3301     ret = process_input(ist->file_index);
3302     if (ret == AVERROR(EAGAIN)) {
3303         if (input_files[ist->file_index]->eagain)
3304             ost->unavailable = 1;
3305         return 0;
3306     }
3307     if (ret < 0)
3308         return ret == AVERROR_EOF ? 0 : ret;
3309
3310     return reap_filters();
3311 }
3312
3313 /*
3314  * The following code is the main loop of the file converter
3315  */
3316 static int transcode(void)
3317 {
3318     int ret, i;
3319     AVFormatContext *os;
3320     OutputStream *ost;
3321     InputStream *ist;
3322     int64_t timer_start;
3323
3324     ret = transcode_init();
3325     if (ret < 0)
3326         goto fail;
3327
3328     if (stdin_interaction) {
3329         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
3330     }
3331
3332     timer_start = av_gettime();
3333
3334 #if HAVE_PTHREADS
3335     if ((ret = init_input_threads()) < 0)
3336         goto fail;
3337 #endif
3338
3339     while (!received_sigterm) {
3340         int64_t cur_time= av_gettime();
3341
3342         /* if 'q' pressed, exits */
3343         if (stdin_interaction)
3344             if (check_keyboard_interaction(cur_time) < 0)
3345                 break;
3346
3347         /* check if there's any stream where output is still needed */
3348         if (!need_output()) {
3349             av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
3350             break;
3351         }
3352
3353         ret = transcode_step();
3354         if (ret < 0) {
3355             if (ret == AVERROR_EOF || ret == AVERROR(EAGAIN))
3356                 continue;
3357
3358             av_log(NULL, AV_LOG_ERROR, "Error while filtering.\n");
3359             break;
3360         }
3361
3362         /* dump report by using the output first video and audio streams */
3363         print_report(0, timer_start, cur_time);
3364     }
3365 #if HAVE_PTHREADS
3366     free_input_threads();
3367 #endif
3368
3369     /* at the end of stream, we must flush the decoder buffers */
3370     for (i = 0; i < nb_input_streams; i++) {
3371         ist = input_streams[i];
3372         if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
3373             output_packet(ist, NULL);
3374         }
3375     }
3376     flush_encoders();
3377
3378     term_exit();
3379
3380     /* write the trailer if needed and close file */
3381     for (i = 0; i < nb_output_files; i++) {
3382         os = output_files[i]->ctx;
3383         av_write_trailer(os);
3384     }
3385
3386     /* dump report by using the first video and audio streams */
3387     print_report(1, timer_start, av_gettime());
3388
3389     /* close each encoder */
3390     for (i = 0; i < nb_output_streams; i++) {
3391         ost = output_streams[i];
3392         if (ost->encoding_needed) {
3393             av_freep(&ost->st->codec->stats_in);
3394             avcodec_close(ost->st->codec);
3395         }
3396     }
3397
3398     /* close each decoder */
3399     for (i = 0; i < nb_input_streams; i++) {
3400         ist = input_streams[i];
3401         if (ist->decoding_needed) {
3402             avcodec_close(ist->st->codec);
3403             if (ist->hwaccel_uninit)
3404                 ist->hwaccel_uninit(ist->st->codec);
3405         }
3406     }
3407
3408     /* finished ! */
3409     ret = 0;
3410
3411  fail:
3412 #if HAVE_PTHREADS
3413     free_input_threads();
3414 #endif
3415
3416     if (output_streams) {
3417         for (i = 0; i < nb_output_streams; i++) {
3418             ost = output_streams[i];
3419             if (ost) {
3420                 if (ost->stream_copy)
3421                     av_freep(&ost->st->codec->extradata);
3422                 if (ost->logfile) {
3423                     fclose(ost->logfile);
3424                     ost->logfile = NULL;
3425                 }
3426                 av_freep(&ost->st->codec->subtitle_header);
3427                 av_freep(&ost->forced_kf_pts);
3428                 av_freep(&ost->apad);
3429                 av_dict_free(&ost->opts);
3430                 av_dict_free(&ost->swr_opts);
3431                 av_dict_free(&ost->resample_opts);
3432             }
3433         }
3434     }
3435     return ret;
3436 }
3437
3438
3439 static int64_t getutime(void)
3440 {
3441 #if HAVE_GETRUSAGE
3442     struct rusage rusage;
3443
3444     getrusage(RUSAGE_SELF, &rusage);
3445     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
3446 #elif HAVE_GETPROCESSTIMES
3447     HANDLE proc;
3448     FILETIME c, e, k, u;
3449     proc = GetCurrentProcess();
3450     GetProcessTimes(proc, &c, &e, &k, &u);
3451     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
3452 #else
3453     return av_gettime();
3454 #endif
3455 }
3456
3457 static int64_t getmaxrss(void)
3458 {
3459 #if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
3460     struct rusage rusage;
3461     getrusage(RUSAGE_SELF, &rusage);
3462     return (int64_t)rusage.ru_maxrss * 1024;
3463 #elif HAVE_GETPROCESSMEMORYINFO
3464     HANDLE proc;
3465     PROCESS_MEMORY_COUNTERS memcounters;
3466     proc = GetCurrentProcess();
3467     memcounters.cb = sizeof(memcounters);
3468     GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
3469     return memcounters.PeakPagefileUsage;
3470 #else
3471     return 0;
3472 #endif
3473 }
3474
3475 static void log_callback_null(void *ptr, int level, const char *fmt, va_list vl)
3476 {
3477 }
3478
3479 int main(int argc, char **argv)
3480 {
3481     int ret;
3482     int64_t ti;
3483
3484     register_exit(ffmpeg_cleanup);
3485
3486     setvbuf(stderr,NULL,_IONBF,0); /* win32 runtime needs this */
3487
3488     av_log_set_flags(AV_LOG_SKIP_REPEATED);
3489     parse_loglevel(argc, argv, options);
3490
3491     if(argc>1 && !strcmp(argv[1], "-d")){
3492         run_as_daemon=1;
3493         av_log_set_callback(log_callback_null);
3494         argc--;
3495         argv++;
3496     }
3497
3498     avcodec_register_all();
3499 #if CONFIG_AVDEVICE
3500     avdevice_register_all();
3501 #endif
3502     avfilter_register_all();
3503     av_register_all();
3504     avformat_network_init();
3505
3506     show_banner(argc, argv, options);
3507
3508     term_init();
3509
3510     /* parse options and open all input/output files */
3511     ret = ffmpeg_parse_options(argc, argv);
3512     if (ret < 0)
3513         exit_program(1);
3514
3515     if (nb_output_files <= 0 && nb_input_files == 0) {
3516         show_usage();
3517         av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
3518         exit_program(1);
3519     }
3520
3521     /* file converter / grab */
3522     if (nb_output_files <= 0) {
3523         av_log(NULL, AV_LOG_FATAL, "At least one output file must be specified\n");
3524         exit_program(1);
3525     }
3526
3527 //     if (nb_input_files == 0) {
3528 //         av_log(NULL, AV_LOG_FATAL, "At least one input file must be specified\n");
3529 //         exit_program(1);
3530 //     }
3531
3532     current_time = ti = getutime();
3533     if (transcode() < 0)
3534         exit_program(1);
3535     ti = getutime() - ti;
3536     if (do_benchmark) {
3537         printf("bench: utime=%0.3fs\n", ti / 1000000.0);
3538     }
3539     av_log(NULL, AV_LOG_DEBUG, "%"PRIu64" frames successfully decoded, %"PRIu64" decoding errors\n",
3540            decode_error_stat[0], decode_error_stat[1]);
3541     if ((decode_error_stat[0] + decode_error_stat[1]) * max_error_rate < decode_error_stat[1])
3542         exit_program(69);
3543
3544     exit_program(received_nb_signals ? 255 : 0);
3545     return 0;
3546 }