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  1. Hi,

    I downloaded a webinar video from bigmarker.com but unfortunately it is encrypted and can’t be displayed correctly. Does anyone know how to handle this issue.

    Link here: https://storage.to/IedwiAJDE
    Last edited by blanc; 30th May 2026 at 06:19.
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  2. Have you used the right key and the right engine to decrypt it?

    key: 92be2ae99b2fe019190ef452669e3530:31d1b78e10fe0eb87 fba28dd025257d9
    format: mp4
    decryption engine: mp4decrypt

    you need to clean the filename as well, remove illegal charecters like / \ ? * : " | < >
    This is the command I used

    Code:
    N_m3u8DL-RE "https://d38fobjf20dmzq.cloudfront.net/1b1771de-ba0b-431a-bb78-a98703bc5b6d/dash/dash.mpd" -H "Accept: */*" -H "DNT: 1" -H "Origin: https://www.bigmarker.com" -H "Referer: https://www.bigmarker.com/" -H "User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/148.0.0.0 Safari/537.36" --key 92be2ae99b2fe019190ef452669e3530:31d1b78e10fe0eb87fba28dd025257d9 -M format=mp4  --save-name "Webinar - A Historical Overview of Telemetry Technology - From the 1950s to Today by MA Business"
    It works fine, here is the file
    https://storage.to/IeqWM80Yj
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  3. I used WidevineProxy2 directly on bigmarker.com and got this command:

    N_m3u8DL-RE "https://d38fobjf20dmzq.cloudfront.net/1b1771de-ba0b-431a-bb78-a98703bc5b6d/dash/dash.mpd" -H "User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:140.0) Gecko/20100101 Firefox/140.0" -H "Accept: */*" -H "Referer: https://www.bigmarker.com/" -H "Origin: https://www.bigmarker.com" --key 92be2ae99b2fe019190ef452669e3530:31d1b78e10fe0eb87 fba28dd025257d9 --use-shaka-packager -M format=mkv

    The key is Ok but an shaka-packager.exe error reports MSVCP140 is missing.
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  4. decryption engine: mp4decrypt
    ...
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