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YouTube还在使用DASH吗？

youtube

YouTube还在使用DASH吗？,youtube,mpeg-dash,Youtube,Mpeg Dash,YouTube是否使用MPEG-DASH传输视频 我发现，如果我在youtube dl中对某些视频使用-F选项，则不会出现“短跑视频”，例如。YouTube是否与服务器保持连接，并通过HTTP请求的“范围”字段请求视频的“片段”？还是下载固定的时间段，比如DASH标准化的时间段 我无法再获得MPD，如： 谢谢大家! 是的，YouTube仍在使用DASH。它不是在所有视频上都可用，在某些视频上只是有时可用。这里有一个视频，其中DASH manifest始终可用，并且实际用于大多数更高质量的流（您可

YouTube是否使用MPEG-DASH传输视频

我发现，如果我在youtube dl中对某些视频使用-F选项，则不会出现“短跑视频”，例如。YouTube是否与服务器保持连接，并通过HTTP请求的“范围”字段请求视频的“片段”？还是下载固定的时间段，比如DASH标准化的时间段

我无法再获得MPD，如：

谢谢大家!

是的，YouTube仍在使用DASH。它不是在所有视频上都可用，在某些视频上只是有时可用。这里有一个视频，其中DASH manifest始终可用，并且实际用于大多数更高质量的流（您可以看到页面上的播放器响应中不包括720p60、1080p和1080p60）：

YouTube同时使用单段流、通过HTTP范围头的多段流和通过URL的多段流

下面是一个来自YouTube的DASH清单示例，摄于2021年4月18日。某些表示已被删除，以符合StackOverflow答案大小限制

<MPD schemaLocation="urn:mpeg:DASH:schema:MPD:2011 DASH-MPD.xsd" minBufferTime="PT1.500S" profiles="urn:mpeg:dash:profile:isoff-main:2011" type="static" mediaPresentationDuration="PT108.158S">
  <Period>
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      <Role schemeIdUri="urn:mpeg:DASH:role:2011" value="main" />
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        <SegmentTimeline>
          <S d="5016" />
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          <S d="4969" />
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          <S d="5016" />
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          <S d="5016" />
          <S d="5015" />
          <S d="4969" />
          <S d="5016" />
          <S d="5015" />
          <S d="4969" />
          <S d="5016" />
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          <S d="4970" />
          <S d="5015" />
          <S d="5016" />
          <S d="4969" />
          <S d="3158" />
        </SegmentTimeline>
      </SegmentList>
      <Representation id="139" codecs="mp4a.40.5" audioSamplingRate="22050" startWithSAP="1" bandwidth="50267">
        <AudioChannelConfiguration schemeIdUri="urn:mpeg:dash:23003:3:audio_channel_configuration:2011" value="2" />
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          <Initialization sourceURL="range/0-593" />
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          <SegmentURL media="range/61297-90915" />
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