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  1. I am trying to download following video.
    Code:
    https://streaming-cdnv6.learnyst.com/v6/schools/110998/c53dc679c839f5cc51345d3357b1745c/8f8c6c8de93f6db0eb49d0933a67ec7e/33881397041cd45dca1381a1cdd92474/en613d660df9a8bd/sdrm/cbcs/audio_video/stream.mpd?u=9171176&k=150678&l=2176602&q=0&f=1&t=0&p=1&m=1&Policy=eyJTdGF0ZW1lbnQiOlt7IlJlc291cmNlIjoiaHR0cHM6Ly9zdHJlYW1pbmctY2RudjYubGVhcm55c3QuY29tL3Y2L3NjaG9vbHMvMTEwOTk4L2M1M2RjNjc5YzgzOWY1Y2M1MTM0NWQzMzU3YjE3NDVjLzhmOGM2YzhkZTkzZjZkYjBlYjQ5ZDA5MzNhNjdlYzdlLzMzODgxMzk3MDQxY2Q0NWRjYTEzODFhMWNkZDkyNDc0Lyo~dT05MTcxMTc2Jms9MTUwNjc4Jmw9MjE3NjYwMiZxPTAmZj0xJnQ9MCZwPTEmbT0xIiwiQ29uZGl0aW9uIjp7IkRhdGVMZXNzVGhhbiI6eyJBV1M6RXBvY2hUaW1lIjoxNzAyNjQwODE2fSwiRGF0ZUdyZWF0ZXJUaGFuIjp7IkFXUzpFcG9jaFRpbWUiOjE3MDI1NTA4MTZ9LCJJcEFkZHJlc3MiOnsiQVdTOlNvdXJjZUlwIjoiMC4wLjAuMC8wIn19fV19&Signature=Dxou0vEl7Stg~P24~lESOvHv8GZtc2PcNYDynnYj8cN~WEXIIIecXpKxh7lleSHX~8Ga7mSQfJYGB0Xisd0qPyU1Z878BmEfVGMtXJ7tV2Goms~7s9m4aOWEViOYLFp4VbNAmikwTB7sixmqdM3ufPYjDeevwv5lspp7X0-QSRnE-VLqnpr~Ck~mduLkDtiKgp8z2JwwnKhVjKA5lwo1WfohenjjQKt9qwRavRL0a5DJwXIx1MXMlQ-vsdU0iyUxHYvzZ2SlZsjk~uiDAHuV3K~VK6sH0uWaCLKkd90imtptdzfcf1vlPwEk2xLoz8X8Jp-izsD0WSEdg9or4TLijg__&Key-Pair-Id=APKAJUVP3A3VHLDL5LAA
    I have done following based on tutorials available in this website.
    PSSH as per mpd file
    Code:
    AAAAOHBzc2gAAAAA7e+LqXnWSs6jyCfc1R0h7QAAABgSEMAMpBUf1snv5o6K4dzV219I88aJmwY=
    The same as per console based on EME log
    Code:
    AAAAOHBzc2gAAAAA7e+LqXnWSs6jyCfc1R0h7QAAABgSEPAy+HSF8+tQ66rGxkRuQylI49yVmwY=
    License server: https://drm-u.learnyst.com/drmv2/lgdrm

    While recovering the key I get
    ERROR
    Error 400: {"errorcode":1,"txnId":1702555134427}

    I have following additional information for headers
    X-Lmul: 1
    X-Lrtoken: eyJhbGciOiJIUzI1NiJ9.eyJ1aWQiOjkxNzExNzYsInNpZCI6M TEwOTk4LCJleHAiOjE3MzQwOTAxMTcsInR5cCI6NCwibG9rIjo iMDAwMCIsInRvayI6Im0zeU5mMHdnOVNzNTIwRnJVY2htVVEiL CJ0aW1lIjoxNzAyNTU0MTE3fQ.kgoGz_wMRircT_LKlUIqj-Alktz_hQ90_5Ez3lbw7Y4

    Can anyone help me how to get the decryption key

    Thanks in advance to everyone whosoever is trying

    Content of mpd file just for information
    Code:
    <?xml version="1.0" encoding="UTF-8"?>
    <!--Generated with https://github.com/google/shaka-packager version v2.5.1-9f11077-release-->
    <MPD xmlns="urn:mpeg:dash:schema:mpd:2011" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="urn:mpeg:dash:schema:mpd:2011 DASH-MPD.xsd" xmlns:cenc="urn:mpeg:cenc:2013" xmlns:mas="urn:marlin:mas:1-0:services:schemas:mpd" xmlns:mspr="urn:microsoft:playready" profiles="urn:mpeg:dash:profile:isoff-on-demand:2011" minBufferTime="PT2S" type="static" mediaPresentationDuration="PT889.5999755859375S">
      <Period id="0">
        <AdaptationSet id="0" contentType="video" maxWidth="1920" maxHeight="1080" frameRate="12800/512" subsegmentAlignment="true" par="16:9">
          <ContentProtection value="cbcs" schemeIdUri="urn:mpeg:dash:mp4protection:2011" cenc:default_KID="c00ca415-1fd6-c9ef-e68e-8ae1dcd5db5f"/>
          <ContentProtection value="MSPR 2.0" schemeIdUri="urn:uuid:9a04f079-9840-4286-ab92-e65be0885f95">
            <cenc:pssh>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</cenc:pssh>
            <mspr:pro>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</mspr:pro>
          </ContentProtection>
          <ContentProtection schemeIdUri="urn:uuid:edef8ba9-79d6-4ace-a3c8-27dcd51d21ed">
            <cenc:pssh>AAAAOHBzc2gAAAAA7e+LqXnWSs6jyCfc1R0h7QAAABgSEMAMpBUf1snv5o6K4dzV219I88aJmwY=</cenc:pssh>
          </ContentProtection>
          <ContentProtection schemeIdUri="urn:uuid:5E629AF5-38DA-4063-8977-97FFBD9902D4">
            <mas:MarlinContentIds>
              <mas:MarlinContentId>urn:marlin:kid:c00ca4151fd6c9efe68e8ae1dcd5db5f</mas:MarlinContentId>
            </mas:MarlinContentIds>
          </ContentProtection>
          <Representation id="0" bandwidth="453854" codecs="avc1.42c01e" mimeType="video/mp4" sar="1:1" width="960" height="540">
            <BaseURL>vAQStream.mp4</BaseURL>
            <SegmentBase indexRange="1595-4302" timescale="12800">
              <Initialization range="0-1594"/>
            </SegmentBase>
          </Representation>
          <Representation id="2" bandwidth="727806" codecs="avc1.42c01e" mimeType="video/mp4" sar="1:1" width="1280" height="720">
            <BaseURL>vMQStream.mp4</BaseURL>
            <SegmentBase indexRange="1591-4298" timescale="12800">
              <Initialization range="0-1590"/>
            </SegmentBase>
          </Representation>
          <Representation id="3" bandwidth="1548436" codecs="avc1.42c01e" mimeType="video/mp4" sar="1:1" width="1920" height="1080">
            <BaseURL>vHQStream.mp4</BaseURL>
            <SegmentBase indexRange="1595-4302" timescale="12800">
              <Initialization range="0-1594"/>
            </SegmentBase>
          </Representation>
        </AdaptationSet>
        <AdaptationSet id="1" contentType="audio" lang="en" subsegmentAlignment="true">
          <ContentProtection value="cbcs" schemeIdUri="urn:mpeg:dash:mp4protection:2011" cenc:default_KID="c00ca415-1fd6-c9ef-e68e-8ae1dcd5db5f"/>
          <ContentProtection value="MSPR 2.0" schemeIdUri="urn:uuid:9a04f079-9840-4286-ab92-e65be0885f95">
            <cenc:pssh>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</cenc:pssh>
            <mspr:pro>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</mspr:pro>
          </ContentProtection>
          <ContentProtection schemeIdUri="urn:uuid:edef8ba9-79d6-4ace-a3c8-27dcd51d21ed">
            <cenc:pssh>AAAAOHBzc2gAAAAA7e+LqXnWSs6jyCfc1R0h7QAAABgSEMAMpBUf1snv5o6K4dzV219I88aJmwY=</cenc:pssh>
          </ContentProtection>
          <ContentProtection schemeIdUri="urn:uuid:5E629AF5-38DA-4063-8977-97FFBD9902D4">
            <mas:MarlinContentIds>
    Quote Quote  
  2. can you show all your license header response?
    Quote Quote  
  3. Code:
    :authority: drm-u.learnyst.com
    :method: POST
    :path: /drmv2/lstdrm
    :scheme: https
    Accept: application/json, text/plain, */*
    Accept-Encoding: gzip, deflate, br
    Accept-Language: en-US,en;q=0.9
    Content-Length: 2236
    Content-Type: application/octet-stream
    Origin: https://learn.soic.in
    Referer: https://learn.soic.in/
    Sec-Ch-Ua: "Not_A Brand";v="8", "Chromium";v="120", "Google Chrome";v="120"
    Sec-Ch-Ua-Mobile: ?0
    Sec-Ch-Ua-Platform: "Windows"
    Sec-Fetch-Dest: empty
    Sec-Fetch-Mode:cors
    Sec-Fetch-Site: cross-site
    User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36
    X-Lmul: 1
    X-Lrtoken: eyJhbGciOiJIUzI1NiJ9.eyJ1aWQiOjkxNzExNzYsInNpZCI6MTEwOTk4LCJleHAiOjE3MzQwOTAxMTcsInR5cCI6NCwibG9rIjoiMDAwMCIsInRvayI6Im0zeU5mMHdnOVNzNTIwRnJVY2htVVEiLCJ0aW1lIjoxNzAyNTU0MTE3fQ.kgoGz_wMRircT_LKlUIqj-Alktz_hQ90_5Ez3lbw7Y4
    Quote Quote  
  4. Response headers
    Code:
    Access-Control-Allow-Credentials: true
    Access-Control-Allow-Origin: *
    Content-Length: 620
    Content-Type: application/octet-stream
    Date: Fri, 15 Dec 2023 03:26:35 GMT
    Vary: Origin
    Quote Quote  
  5. where did you get this?

    Code:
    I have following additional information for headers
    X-Lmul: 1
    X-Lrtoken: eyJhbGciOiJIUzI1NiJ9.eyJ1aWQiOjkxNzExNzYsInNpZCI6M TEwOTk4LCJleHAiOjE3MzQwOTAxMTcsInR5cCI6NCwibG9rIjo iMDAwMCIsInRvayI6Im0zeU5mMHdnOVNzNTIwRnJVY2htVVEiL CJ0aW1lIjoxNzAyNTU0MTE3fQ.kgoGz_wMRircT_LKlUIqj-Alktz_hQ90_5Ez3lbw7Y4
    can you copy all info of the headers?
    Quote Quote  
  6. Code:
    :authority: drm-u.learnyst.com
    :method: POST
    :path: /drmv2/lstdrm
    :scheme: https
    Accept: application/json, text/plain, */*
    Accept-Encoding: gzip, deflate, br
    Accept-Language: en-US,en;q=0.9
    Content-Length: 2236
    Content-Type: application/octet-stream
    Origin: https://learn.soic.in
    Referer: https://learn.soic.in/
    Sec-Ch-Ua: "Not_A Brand";v="8", "Chromium";v="120", "Google Chrome";v="120"
    Sec-Ch-Ua-Mobile: ?0
    Sec-Ch-Ua-Platform: "Windows"
    Sec-Fetch-Dest: empty
    Sec-Fetch-Mode:cors
    Sec-Fetch-Site: cross-site
    User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36
    X-Lmul: 1
    X-Lrtoken: eyJhbGciOiJIUzI1NiJ9.eyJ1aWQiOjkxNzExNzYsInNpZCI6MTEwOTk4LCJleHAiOjE3MzQwOTAxMTcsInR5cCI6NCwibG9rIjoiMDAwMCIsInRvayI6Im0zeU5mMHdnOVNzNTIwRnJVY2htVVEiLCJ0aW1lIjoxNzAyNTU0MTE3fQ.kgoGz_wMRircT_LKlUIqj-Alktz_hQ90_5Ez3lbw7Y4
    Quote Quote  
  7. Refer Reply #3 above
    Quote Quote  
  8. Have you figured out this? In my case i got keys but unable to find proper way to decrypt mp4 files.
    Quote Quote  



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