FFmpeg / DASH：mov / mp4格式的持续时间或时间戳超出范围

时间：2017-10-26 13:34:53

标签： ffmpeg video-streaming mpeg-dash shaka

我正在尝试将Highcharts.chart('container', { chart: { type: 'columnrange', inverted: true }, xAxis: { categories: ['Q1', 'Q2'] }, legend: { enabled: false }, series: [{ name: 'Answers', data: [ // Question 1 { x: 0, low: -10, high: -5, color: 'red' }, { x: 0, low: -5, high: 5, color: 'blue' }, { x: 0, low: 5, high: 10, color: 'green' }, // Question 2 { x: 1, low: -15, high: -2, color: 'red' }, { x: 1, low: -2, high: 8, color: 'blue' }, { x: 1, low: 8, high: 20, color: 'green' } ] }] }); 流转换为破折号。问题是我得到了很多错误，如下所示（虽然它似乎将它分成多个文件但我也在播放器上出现错误）。问题是为什么我会收到这些错误以及如何解决？如果我只是将“复制”转换为单个mp4文件，它可以正常工作。

aac

输出

    ffmpeg -i  "a.mkv" -y -map  0:1 -c:0 copy -min_seg_duration 1000000 
-use_timeline 1 -use_template 1 -init_seg_name init.mp4s 
-media_seg_name  "\$Number\$.mp4s" -adaptation_sets "id=1,streams=0"
-remove_at_exit 0  -f dash -dash 1 
"out/stream.mpd" -loglevel error

复制到单个MP4工作正常  ffmpeg -i“a.mkv”-y -map 0：1 -c：0 copy -f mp4 -dash 1“out / out.mp4”-loglevel error

探针

[mp4 @ 0x7fbb70819600] Application provided duration: -32 / timestamp: 40475608 is out of range for mov/mp4 format
[mp4 @ 0x7fbb70819600] Application provided duration: -32 / timestamp: 40764376 is out of range for mov/mp4 format
[mp4 @ 0x7fbb70819600] Application provided duration: -32 / timestamp: 40860664 is out of range for mov/mp4 format
[mp4 @ 0x7fbb70819600] Application provided duration: -32 / timestamp: 41149432 is out of range for mov/mp4 format
[mp4 @ 0x7fbb70819600] Application provided duration: -32 / timestamp: 41390056 is out of range for mov/mp4 format
[mp4 @ 0x7fbb70819600] Application provided duration: -32 / timestamp: 41823208 is out of range for mov/mp4 format

Shaka调试

ffprobe a.mkv
ffprobe version 3.4 Copyright (c) 2007-2017 the FFmpeg developers
  built with Apple LLVM version 9.0.0 (clang-900.0.37)
  configuration: --prefix=/usr/local/Cellar/ffmpeg/3.4 --enable-shared --enable-pthreads --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-gpl --enable-libmp3lame --enable-libx264 --enable-libxvid --enable-opencl --enable-videotoolbox --disable-lzma
  libavutil      55. 78.100 / 55. 78.100
  libavcodec     57.107.100 / 57.107.100
  libavformat    57. 83.100 / 57. 83.100
  libavdevice    57. 10.100 / 57. 10.100
  libavfilter     6.107.100 /  6.107.100
  libavresample   3.  7.  0 /  3.  7.  0
  libswscale      4.  8.100 /  4.  8.100
  libswresample   2.  9.100 /  2.  9.100
  libpostproc    54.  7.100 / 54.  7.100
Input #0, matroska,webm, from 'a.mkv':
  Metadata:
    encoder         : libebml v1.3.1 + libmatroska v1.4.2
    creation_time   : 2017-03-11T02:56:50.000000Z
  Duration: 02:12:52.39, start: 0.000000, bitrate: 740 kb/s
    Chapter #0:0: start 0.000000, end 520.270000
    Metadata:
      title           : 00:00:00.000
    Chapter #0:1: start 520.270000, end 1135.718000
    Metadata:
      title           : 00:08:40.270
    Chapter #0:2: start 1135.718000, end 1703.660000
    Metadata:
      title           : 00:18:55.718
    Chapter #0:3: start 1703.660000, end 2314.187000
    Metadata:
      title           : 00:28:23.660
    Chapter #0:4: start 2314.187000, end 2888.594000
    Metadata:
      title           : 00:38:34.187
    Chapter #0:5: start 2888.594000, end 3499.246000
    Metadata:
      title           : 00:48:08.594
    Chapter #0:6: start 3499.246000, end 4154.692000
    Metadata:
      title           : 00:58:19.246
    Chapter #0:7: start 4154.692000, end 4646.392000
    Metadata:
      title           : 01:09:14.692
    Chapter #0:8: start 4646.392000, end 5373.660000
    Metadata:
      title           : 01:17:26.392
    Chapter #0:9: start 5373.660000, end 5882.085000
    Metadata:
      title           : 01:29:33.660
    Chapter #0:10: start 5882.085000, end 6627.871000
    Metadata:
      title           : 01:38:02.085
    Chapter #0:11: start 6627.871000, end 7144.471000
    Metadata:
      title           : 01:50:27.871
    Chapter #0:12: start 7144.471000, end 7451.944000
    Metadata:
      title           : 01:59:04.471
    Chapter #0:13: start 7451.944000, end 7972.394000
    Metadata:
      title           : 02:04:11.944
    Stream #0:0(eng): Video: h264 (High), yuv420p(tv, bt709/unknown/unknown, progressive), 720x300 [SAR 1:1 DAR 12:5], 23.98 fps, 23.98 tbr, 1k tbn, 47.95 tbc (default)
    Metadata:
      title           : X264
      BPS             : 623765
      BPS-eng         : 623765
      DURATION        : 02:12:52.311000000
      DURATION-eng    : 02:12:52.311000000
      NUMBER_OF_FRAMES: 191144
      NUMBER_OF_FRAMES-eng: 191144
      NUMBER_OF_BYTES : 621606403
      NUMBER_OF_BYTES-eng: 621606403
      _STATISTICS_WRITING_APP: mkvmerge v8.3.0 ('Over the Horizon') 64bit
      _STATISTICS_WRITING_APP-eng: mkvmerge v8.3.0 ('Over the Horizon') 64bit
      _STATISTICS_WRITING_DATE_UTC: 2017-03-11 02:56:50
      _STATISTICS_WRITING_DATE_UTC-eng: 2017-03-11 02:56:50
      _STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
      _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
    Stream #0:1(eng): Audio: aac (LC), 48000 Hz, stereo, fltp (default)
    Metadata:
      BPS             : 114797
      BPS-eng         : 114797
      DURATION        : 02:12:52.394000000
      DURATION-eng    : 02:12:52.394000000
      NUMBER_OF_FRAMES: 373706
      NUMBER_OF_FRAMES-eng: 373706
      NUMBER_OF_BYTES : 114401387
      NUMBER_OF_BYTES-eng: 114401387
      _STATISTICS_WRITING_APP: mkvmerge v8.3.0 ('Over the Horizon') 64bit
      _STATISTICS_WRITING_APP-eng: mkvmerge v8.3.0 ('Over the Horizon') 64bit
      _STATISTICS_WRITING_DATE_UTC: 2017-03-11 02:56:50
      _STATISTICS_WRITING_DATE_UTC-eng: 2017-03-11 02:56:50
      _STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
      _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES

1 个答案:

答案 0 :(得分：0)

Scheck队长向我指出了这个问题：）

我没有对其进行详细调查，但是从第一眼看，我认为您的ffmpeg命令存在的问题是您告诉ffmpeg创建带有最小分段的破折号媒体分段长度为1秒，但同时您正在复制编码的位流（在指定的粒度下可能没有随机访问点），我更像一个视频专家（这里我假设音频也有RAP等）

这就是我要做的：

选项1，如果您只需要一个表示形式：

ffmpeg -i a.mkv -map 0:1 -c:a aac -b:a 128k -use_timeline 1 -use_template 1 -remove_at_exit 0 -seg_duration 1 -f dash audio.mpd

选项2，如果您需要多个比特率，则下面是带有两个表示形式的示例：

ffmpeg -i a.mkv -map 0:1 -map 0:1 -c:a aac -b:a:0 128k -b:a:1 64k -use_timeline 1 -use_template 1 -remove_at_exit 0 -seg_duration 1 -adaptation_sets "id=0,streams=0,1" -f dash audio.mpd

我使用YouTube的内容，以dash.js快速测试了这些命令：

youtube-dl -f 137+140 https://www.youtube.com/watch\?v\=QPC4Kyx-AVw -o in.mp4
ffmpeg -i in.mp4 -c copy a.mkv

其中有一个h.264视频流#0:0和一个aac音频流#0:1

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