Need help with downloading lectures.

I need help download lectures from ww.pw.live . I have the subscription for now but want to keep the lectures for future reference.

It was easier to download before as the link was to be modified a little and it would download through yt-dlp. They have recently changed their cloudfront servers and the old method does not work.

A new method was shared in YouTube but it only allows downloads through 1DM app on Android and through a telegram bot. It uses the following website ‘psitoffers.store/1dm.php?vid=[VIDEO_ID]’ to add some Policy ID, Key pair ID, Signature to the original link. When I paste this link into yt-dlp it throws 403 Forbidden error.

I have checked the DL links in 1DM. The Policy ID, Key Pair ID remain the same while the Signature changes for each lecture. How can I generate my own or get them from the browser, and pass it to yt-dlp for batch downloading? I saw a section named Policy, Key Pair ID, signature in cookies but they don’t have any ID value.

https://lemmy.world/pictrs/image/d31db7dc-63f4-493f-a06e-f4883dcb15c7.png

I don’t know what streaming method they use but it shows as octet-stream in the network tab.

https://lemmy.world/pictrs/image/ce1d6c6e-66e8-4bb3-8c4c-454a94bb3488.png

I tried asking the dev of the new method, but he won’t reply anything.

Please refer me to any other resources that may help me with this.