mpd、hls视频了解

参考文章：

1、自适应流媒体传输（四）——深入理解MPD - 腾讯云开发者社区-腾讯云 (tencent.com)

1. HLS及M3U8介绍_51CTO博客_m3u8解析

2. m3u8对应文件在哪儿（详解m3u8协议） (studyofnet.com)

3.ts 解析：https://blog.csdn.net/u013898698/article/details/79552851?share_token=924f9242-2de1-4bd5-a0c1-c1a88bc11ae0

文件内容：

1. mpd文件内容如下：

<?xml version='1.0' encoding='UTF-8'?>
<MPD xmlns="urn:mpeg:dash:schema:mpd:2011" xmlns:kvs="urn:aws:kinesisvideo:mpd:2019" profiles="urn:mpeg:dash:profile:isoff-on-demand:2011" type="static" availabilityStartTime="2023-02-01T07:44:20.154Z" mediaPresentationDuration="PT11.993S" minBufferTime="PT1S">
  <Period id="0" start="PT0S" duration="PT11.993S">
    <AdaptationSet segmentAlignment="true" mimeType="video/mp4" startWithSAP="1">
      <SegmentTemplate media="getMP4MediaFragment.mp4?SessionToken=CiB0UbmpykTj_qUwRMS_oGSQ2cyoUBCtnlITK3bHETOU6xIQvOdn7ro-egjNRn-QOQCo_xoZ7NOSN8jPeOsYWYg0l0L9TO4MGMdfBRPmYCIgv1T-5BwX2wyVgnlhOSjhYJ2Z7_861U6ZnMZI5Mp2uhc~&amp;SequenceNumber=$Number$&amp;TrackNumber=1" initialization="getMP4InitFragment.mp4?SessionToken=CiB0UbmpykTj_qUwRMS_oGSQ2cyoUBCtnlITK3bHETOU6xIQvOdn7ro-egjNRn-QOQCo_xoZ7NOSN8jPeOsYWYg0l0L9TO4MGMdfBRPmYCIgv1T-5BwX2wyVgnlhOSjhYJ2Z7_861U6ZnMZI5Mp2uhc~&amp;TrackNumber=1" timescale="1000" startNumber="1">
        <SegmentTimeline>
          <S t="0" d="1997" kvs:ts="2023-02-01T07:44:20.154Z" kvs:fn="91343852333184329172373990441445609830137530749"/>
          <S d="2000" kvs:ts="2023-02-01T07:44:22.152Z" kvs:fn="91343852333184329177325750598587131274875633039"/>
          <S d="2000" kvs:ts="2023-02-01T07:44:24.151Z" kvs:fn="91343852333184329182277510755728652540162752768"/>
          <S d="1998" kvs:ts="2023-02-01T07:44:26.151Z" kvs:fn="91343852333184334134037667897249753785296460711"/>
          <S d="2000" kvs:ts="2023-02-01T07:44:28.150Z" kvs:fn="91343852333184334138989428054391275151635768608"/>
          <S d="1998" kvs:ts="2023-02-01T07:44:30.150Z" kvs:fn="91343852333184334143941188211532796378004551986"/>
        </SegmentTimeline>
      </SegmentTemplate>
      <Representation id="video" bandwidth="1209810" width="1920" height="1080" frameRate="20.03" codecs="avc1.4d0029" scanType="progressive"/>
    </AdaptationSet>
    <AdaptationSet segmentAlignment="true" mimeType="audio/mp4" startWithSAP="1">
      <SegmentTemplate media="getMP4MediaFragment.mp4?SessionToken=CiB0UbmpykTj_qUwRMS_oGSQ2cyoUBCtnlITK3bHETOU6xIQvOdn7ro-egjNRn-QOQCo_xoZ7NOSN8jPeOsYWYg0l0L9TO4MGMdfBRPmYCIgv1T-5BwX2wyVgnlhOSjhYJ2Z7_861U6ZnMZI5Mp2uhc~&amp;SequenceNumber=$Number$&amp;TrackNumber=2" initialization="getMP4InitFragment.mp4?SessionToken=CiB0UbmpykTj_qUwRMS_oGSQ2cyoUBCtnlITK3bHETOU6xIQvOdn7ro-egjNRn-QOQCo_xoZ7NOSN8jPeOsYWYg0l0L9TO4MGMdfBRPmYCIgv1T-5BwX2wyVgnlhOSjhYJ2Z7_861U6ZnMZI5Mp2uhc~&amp;TrackNumber=2" timescale="1000" startNumber="1">
        <SegmentTimeline>
          <S t="0" d="1997" kvs:ts="2023-02-01T07:44:20.154Z" kvs:fn="91343852333184329172373990441445609830137530749"/>
          <S d="2000" kvs:ts="2023-02-01T07:44:22.152Z" kvs:fn="91343852333184329177325750598587131274875633039"/>
          <S d="2000" kvs:ts="2023-02-01T07:44:24.151Z" kvs:fn="91343852333184329182277510755728652540162752768"/>
          <S d="1998" kvs:ts="2023-02-01T07:44:26.151Z" kvs:fn="91343852333184334134037667897249753785296460711"/>
          <S d="2000" kvs:ts="2023-02-01T07:44:28.150Z" kvs:fn="91343852333184334138989428054391275151635768608"/>
          <S d="1998" kvs:ts="2023-02-01T07:44:30.150Z" kvs:fn="91343852333184334143941188211532796378004551986"/>
        </SegmentTimeline>
      </SegmentTemplate>
      <Representation id="audio" bandwidth="66457" audioSamplingRate="8000" codecs="alaw">
        <AudioChannelConfiguration schemeIdUri="urn:mpeg:dash:23003:3:audio_channel_configuration:2011"/>
      </Representation>
    </AdaptationSet>
  </Period>
</MPD>

2、m3u8文件内容如下：

#EXTM3U

#EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="stereo",LANGUAGE="en",NAME="English",DEFAULT=YES,AUTOSELECT=YES,URI="audio/stereo/en/128kbit.m3u8"
#EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="stereo",LANGUAGE="dubbing",NAME="Dubbing",DEFAULT=NO,AUTOSELECT=YES,URI="audio/stereo/none/128kbit.m3u8"

#EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="surround",LANGUAGE="en",NAME="English",DEFAULT=YES,AUTOSELECT=YES,URI="audio/surround/en/320kbit.m3u8"
#EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="surround",LANGUAGE="dubbing",NAME="Dubbing",DEFAULT=NO,AUTOSELECT=YES,URI="audio/stereo/none/128kbit.m3u8"

#EXT-X-MEDIA:TYPE=SUBTITLES,GROUP-ID="subs",NAME="Deutsch",DEFAULT=NO,AUTOSELECT=YES,FORCED=NO,LANGUAGE="de",URI="subtitles_de.m3u8"
#EXT-X-MEDIA:TYPE=SUBTITLES,GROUP-ID="subs",NAME="English",DEFAULT=YES,AUTOSELECT=YES,FORCED=NO,LANGUAGE="en",URI="subtitles_en.m3u8"
#EXT-X-MEDIA:TYPE=SUBTITLES,GROUP-ID="subs",NAME="Espanol",DEFAULT=NO,AUTOSELECT=YES,FORCED=NO,LANGUAGE="es",URI="subtitles_es.m3u8"
#EXT-X-MEDIA:TYPE=SUBTITLES,GROUP-ID="subs",NAME="Français",DEFAULT=NO,AUTOSELECT=YES,FORCED=NO,LANGUAGE="fr",URI="subtitles_fr.m3u8"

#EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=258157,CODECS="avc1.4d400d,mp4a.40.2",AUDIO="stereo",RESOLUTION=422x180,SUBTITLES="subs"
video/250kbit.m3u8
#EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=520929,CODECS="avc1.4d4015,mp4a.40.2",AUDIO="stereo",RESOLUTION=638x272,SUBTITLES="subs"
video/500kbit.m3u8
#EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=831270,CODECS="avc1.4d4015,mp4a.40.2",AUDIO="stereo",RESOLUTION=638x272,SUBTITLES="subs"
video/800kbit.m3u8
#EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=1144430,CODECS="avc1.4d401f,mp4a.40.2",AUDIO="surround",RESOLUTION=958x408,SUBTITLES="subs"
video/1100kbit.m3u8
#EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=1558322,CODECS="avc1.4d401f,mp4a.40.2",AUDIO="surround",RESOLUTION=1277x554,SUBTITLES="subs"
video/1500kbit.m3u8
#EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=4149264,CODECS="avc1.4d4028,mp4a.40.2",AUDIO="surround",RESOLUTION=1921x818,SUBTITLES="subs"
video/4000kbit.m3u8
#EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=6214307,CODECS="avc1.4d4028,mp4a.40.2",AUDIO="surround",RESOLUTION=1921x818,SUBTITLES="subs"
video/6000kbit.m3u8
#EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=10285391,CODECS="avc1.4d4033,mp4a.40.2",AUDIO="surround",RESOLUTION=4096x1744,SUBTITLES="subs"
video/10000kbit.m3u8

ts解析

(172条消息) 音视频 TS格式解析_音视频开发老舅的博客-CSDN博客_ts文件解析