需要帮助调试分段破折号文件
输入是带有这些细节的MP4。这是从摄像机录制的，相机的输出是mkv，我们在通过adobe编辑音频后转换为MP4
使用此命令将其转换为另一个mp4
ffmpeg -i "input.mp4" -s 1280x720 -c:v libx264 -b:v 750k -bf 2 -g 75 -sc_threshold 0 -an video_1280x720_750k.mp4
ffmpeg -i "input.mp4" -c:a aac -strict experimental -b:a 96k -ar 32000 -vn audio_96k.mp4
输出视频
然后，通过MP4Box创建分段短划线
MP4Box -dash 10000 -frag 10000 -rap -segment-name video_0_1280000\segment_ video_1280x720_750k.mp4
MP4Box -dash 3000 -frag 10000 -rap -segment-name audio_0_96000\segment_ audio_96k.mp4
生成的MPD在线验证并且完美
更新！包含MPD文件
<?xml version="1.0"?>
<!-- MPD file Generated with GPAC version 0.5.2-DEV-rev621-g236c5f8-master at 2015-10-26T05:16:19.619Z-->
<MPD xmlns="urn:mpeg:dash:schema:mpd:2011" minBufferTime="PT1.500S" type="static" mediaPresentationDuration="PT0H2M0.000S" maxSegmentDuration="PT0H0M10.000S" profiles="urn:mpeg:dash:profile:full:2011">
<ProgramInformation moreInformationURL="http://gpac.sourceforge.net">
<Title>video_1280x720_500k_dash.mpd generated by GPAC</Title>
</ProgramInformation>
<Period duration="PT0H2M0.000S">
<AdaptationSet segmentAlignment="true" lang="eng">
<Representation id="1" mimeType="audio/mp4" codecs="mp4a.40.2" audioSamplingRate="32000" startWithSAP="1" bandwidth="98434">
<AudioChannelConfiguration schemeIdUri="urn:mpeg:dash:23003:3:audio_channel_configuration:2011" value="2"/>
<SegmentList timescale="32000" duration="319999">
<Initialization sourceURL="audio_0_96000/segment_init.mp4"/>
<SegmentURL media="audio_0_96000/segment_1.m4s"/>
<SegmentURL media="audio_0_96000/segment_2.m4s"/>
<SegmentURL media="audio_0_96000/segment_3.m4s"/>
<SegmentURL media="audio_0_96000/segment_4.m4s"/>
<SegmentURL media="audio_0_96000/segment_5.m4s"/>
<SegmentURL media="audio_0_96000/segment_6.m4s"/>
<SegmentURL media="audio_0_96000/segment_7.m4s"/>
<SegmentURL media="audio_0_96000/segment_8.m4s"/>
<SegmentURL media="audio_0_96000/segment_9.m4s"/>
<SegmentURL media="audio_0_96000/segment_10.m4s"/>
<SegmentURL media="audio_0_96000/segment_11.m4s"/>
<SegmentURL media="audio_0_96000/segment_12.m4s"/>
<SegmentURL media="audio_0_96000/segment_13.m4s"/>
</SegmentList>
</Representation>
</AdaptationSet>
<AdaptationSet segmentAlignment="true" maxWidth="1280" maxHeight="720" maxFrameRate="25" par="16:9" lang="eng">
<Representation id="1" mimeType="video/mp4" codecs="avc3.64001f" width="1280" height="720" frameRate="25" sar="1:1" startWithSAP="1" bandwidth="764668">
<SegmentList timescale="12800" duration="125866">
<Initialization sourceURL="video_0_1280000/segment_init.mp4"/>
<SegmentURL media="video_0_1280000/segment_1.m4s"/>
<SegmentURL media="video_0_1280000/segment_2.m4s"/>
<SegmentURL media="video_0_1280000/segment_3.m4s"/>
<SegmentURL media="video_0_1280000/segment_4.m4s"/>
<SegmentURL media="video_0_1280000/segment_5.m4s"/>
<SegmentURL media="video_0_1280000/segment_6.m4s"/>
<SegmentURL media="video_0_1280000/segment_7.m4s"/>
<SegmentURL media="video_0_1280000/segment_8.m4s"/>
<SegmentURL media="video_0_1280000/segment_9.m4s"/>
<SegmentURL media="video_0_1280000/segment_10.m4s"/>
<SegmentURL media="video_0_1280000/segment_11.m4s"/>
<SegmentURL media="video_0_1280000/segment_12.m4s"/>
<SegmentURL media="video_0_1280000/segment_13.m4s"/>
</SegmentList>
</Representation>
</AdaptationSet>
</Period>
</MPD>
通过dashjs播放视频..我相信它只播放初始片段，错误输出为MEDIA_ERR_DECODE..MEDIA_ERR_SRC_NOT_SUPPORTED ..或某些消息显示开始未找到..
通过chrome调试我发现至少有4个段正确加载..我不知道最近会发生什么..
非常感谢您在调试问题时提供的任何帮助。 我真的无法理解这是文件或ffmpeg或mp4box或chrome 的问题。
chrome调试工具的输出
[dash.js 1.5.1] new MediaPlayer instance has been created
dash.all.js:11 Playback initiated!
dash.all.js:11 Parsing complete: ( xml2json: 5ms, objectiron: 10ms, total: 0.015s)
dash.all.js:11 Manifest has been refreshed at Mon Oct 26 2015 10:19:22 GMT-0400 (Eastern Daylight Time)[1445869162092]
dash.all.js:11 SegmentTimeline detected using calculated Live Edge Time
dash.all.js:11 MediaSource is open!
dash.all.js:11 [object Event]
dash.all.js:11 Duration successfully set to: 120
dash.all.js:11 Added 0 inline events
dash.all.js:11 video codec: video/mp4;codecs="avc3.64001f"
dash.all.js:11 [video] stop
dash.all.js:11 audio codec: audio/mp4;codecs="mp4a.40.2"
dash.all.js:11 [audio] stop
dash.all.js:11 No text data.
dash.all.js:11 No fragmentedText data.
dash.all.js:11 No muxed data.
dash.all.js:11 [video] start
dash.all.js:11 [video] Getting the request for time: 0
dash.all.js:11 [video] Index for time 0 is 0
dash.all.js:11 [video] SegmentList: 0 / 120
dash.all.js:11 [audio] start
dash.all.js:11 [audio] Getting the request for time: 0
dash.all.js:11 [audio] Index for time 0 is 0
dash.all.js:11 [audio] SegmentList: 0 / 120
dash.all.js:11 [video] Getting the request for time: 9.83328125
dash.all.js:11 [video] Index for time 9.83328125 is 0
dash.all.js:11 [video] SegmentList: 0 / 120
dash.all.js:11 [video] SegmentList: 9.83328125 / 120
dash.all.js:11 [audio] Getting the request for time: 9.99996875
dash.all.js:11 [audio] Index for time 9.99996875 is 0
dash.all.js:11 [audio] SegmentList: 0 / 120
dash.all.js:11 [audio] SegmentList: 9.99996875 / 120
dash.all.js:11 loaded audio:Media Segment:0 (200, 20ms, 6ms)
dash.all.js:11 loaded video:Media Segment:0 (200, 153ms, 43ms)
dash.all.js:11 loaded video:Initialization Segment:NaN (200, 0ms, 32ms)
dash.all.js:11 [video] Initialization finished loading
dash.all.js:11 loaded audio:Initialization Segment:NaN (200, 0ms, 34ms)
dash.all.js:11 [audio] Initialization finished loading
dash.all.js:11 [video] Getting the request for time: 19.6665625
dash.all.js:11 [video] Index for time 19.6665625 is 1
dash.all.js:11 [video] SegmentList: 9.83328125 / 120
dash.all.js:11 [video] SegmentList: 19.6665625 / 120
dash.all.js:11 [audio] Getting the request for time: 19.9999375
dash.all.js:11 [audio] Index for time 19.9999375 is 1
dash.all.js:11 [audio] SegmentList: 9.99996875 / 120
dash.all.js:11 [audio] SegmentList: 19.9999375 / 120
dash.all.js:11 [video] Stalling Buffer
dash.all.js:11 [video] Waiting for more buffer before starting playback.
dash.all.js:11 [video] Getting the request for time: 0
dash.all.js:11 [video] Index for time 0 is 0
dash.all.js:11 [audio] Stalling Buffer
dash.all.js:11 [audio] Waiting for more buffer before starting playback.
dash.all.js:11 [audio] Getting the request for time: 0
dash.all.js:11 [audio] Index for time 0 is 0
dash.all.js:11 <video> loadedmetadata
dash.all.js:11 Starting playback at offset: 0
dash.all.js:11 [video] Getting the request for time: 29.499843750000004
dash.all.js:11 [video] Index for time 29.499843750000004 is 2
dash.all.js:11 [video] SegmentList: 19.6665625 / 120
dash.all.js:11 [video] SegmentList: 29.499843750000004 / 120
dash.all.js:11 [video] Got enough buffer to start.
dash.all.js:11 [video] seek: 0
dash.all.js:11 [audio] Getting the request for time: 29.999906250000002
dash.all.js:11 [audio] Index for time 29.999906250000002 is 2
dash.all.js:11 [audio] SegmentList: 19.9999375 / 120
dash.all.js:11 [audio] SegmentList: 29.999906250000002 / 120
dash.all.js:11 [audio] Got enough buffer to start.
dash.all.js:11 [audio] seek: 0
dash.all.js:11 loaded audio:Media Segment:9.99996875 (200, 67ms, 24ms)
dash.all.js:11 loaded video:Media Segment:9.83328125 (200, 71ms, 31ms)
dash.all.js:11 [audio] Buffered Range: 0.032 - 9.984
dash.all.js:11 [audio] Getting the request for time: 0
dash.all.js:11 [audio] Index for time 0 is 0
dash.all.js:11 Start Event Controller
dash.all.js:11 [audio] Buffered Range: 0.032 - 19.999968
dash.all.js:11 [audio] Getting the request for time: 0
dash.all.js:11 [audio] Index for time 0 is 0
dash.all.js:11 <video> play
dash.all.js:11 [video] start
dash.all.js:11 [video] Getting the request for time: 0
dash.all.js:11 [video] Index for time 0 is 0
dash.all.js:11 [video] SegmentList: 0 / 120
dash.all.js:11 [video] SegmentList: 9.83328125 / 120
dash.all.js:11 [video] SegmentList: 19.6665625 / 120
dash.all.js:11 [audio] start
dash.all.js:11 <video> playing
dash.all.js:11 [video] Buffered Range: 0 - 9
dash.all.js:11 [video] Getting the request for time: 0
dash.all.js:11 [video] Index for time 0 is 0
dash.all.js:11 Do seek: 0.032
dash.all.js:11 <video> seek
dash.all.js:11 [video] Getting the request for time: 29.499843750000004
dash.all.js:11 [video] Index for time 29.499843750000004 is 2
dash.all.js:11 [video] SegmentList: 19.6665625 / 120
dash.all.js:11 [video] SegmentList: 29.499843750000004 / 120
dash.all.js:11 [video] seek: 0.032
dash.all.js:11 [audio] seek: 0.032
dash.all.js:11 [video] Getting the request for time: 9
dash.all.js:11 [video] Index for time 9 is 0
dash.all.js:11 [video] SegmentList: 0 / 120
dash.all.js:11 [video] SegmentList: 9.83328125 / 120
dash.all.js:11 [video] SegmentList: 19.6665625 / 120
dash.all.js:11 [video] SegmentList: 29.499843750000004 / 120
dash.all.js:11 [video] Buffered Range: 0 - 18
dash.all.js:11 [video] Getting the request for time: 0
dash.all.js:11 [video] Index for time 0 is 0
dash.all.js:11 loaded video:Media Segment:19.6665625 (200, 42ms, 33ms)
dash.all.js:11 <video> seeked
dash.all.js:11 Start Event Controller
dash.all.js:11 <video> playing
dash.all.js:11 [video] Buffered Range: 0 - 28
dash.all.js:11 [video] Getting the request for time: 0
dash.all.js:11 [video] Index for time 0 is 0
dash.all.js:11 [audio] Getting the request for time: 19.999968
dash.all.js:11 [audio] Index for time 19.999968 is 1
dash.all.js:11 [audio] SegmentList: 9.99996875 / 120
dash.all.js:11 [audio] SegmentList: 19.9999375 / 120
dash.all.js:11 [audio] Getting the request for time: 29.999906250000002
dash.all.js:11 [audio] Index for time 29.999906250000002 is 2
dash.all.js:11 [audio] SegmentList: 19.9999375 / 120
dash.all.js:11 [audio] SegmentList: 29.999906250000002 / 120
dash.all.js:11 loaded audio:Media Segment:19.9999375 (200, 102ms, 2ms)
dash.all.js:11 [audio] Buffered Range: 0.032 - 29.983968
dash.all.js:11 [audio] Getting the request for time: 0
dash.all.js:11 [audio] Index for time 0 is 0
dash.all.js:11 loaded audio:Media Segment:29.999906250000002 (200, 26ms, 2ms)
dash.all.js:11 [audio] Buffered Range: 0.032 - 39.999968
dash.all.js:11 [audio] Getting the request for time: 0
dash.all.js:11 [audio] Index for time 0 is 0
dash.all.js:11 loaded video:Media Segment:29.499843750000004 (200, 47ms, 7ms)
dash.all.js:11 Video Element Error: MEDIA_ERR_DECODE
dash.all.js:11 [video] stop
dash.all.js:11 [audio] stop
dash.all.js:11 Video Element Error: MEDIA_ERR_SRC_NOT_SUPPORTED
dash.all.js:11 <video> play
答案 0 :(得分：0)
您是否已经分别尝试过音频和视频？这至少可以隔离错误。
您还可以尝试根据http://www.dash-player.com/blog/2014/11/mpeg-dash-content-generation-using-mp4box-and-x264/对您的资产进行编码，这对我有用。
答案 1 :(得分：0)
这很可能是关于浏览器支持哪些编解码器的浏览器播放问题。
尝试在此处添加编解码器字符串以查看它们是否播放：http://www.w3schools.com/tags/tryit.asp?filename=tryhtml5_av_met_canplaytype
虽然avc3.64001f应该播放它可能不在某些浏览器中而你可以尝试使用主配置文件，尝试在输入文件之后将其添加到你的ffmpeg命令
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