Learnyst video download help

[Giyina]

I am trying to download following video.

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

AAAAOHBzc2gAAAAA7e+LqXnWSs6jyCfc1R0h7QAAABgSEMAMpBUf1snv5o6K4dzV219I88aJmwY=

The same as per console based on EME log

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

<?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>

[jckzz]

can you show all your license header response?

[Giyana]

: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

[Giyina]

Response headers

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

[jckzz]

where did you get this?

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?

[Giyina]

: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

[Giyana]

Refer Reply #3 above

[Master_Mind]

Have you figured out this? In my case i got keys but unable to find proper way to decrypt mp4 files.