How to get key

[newbi33]

Sorry to be that person but I have spent a while trying to figure it out myself and I seem to be getting stuck on this part. Here's what I've done so far:

1) I have the manifest.mpd file which contains:
- PSSH
- KID
2) I have the license URL (I hope)
3) I have what I think are the headers (This was confusing for me to understand as well)
- I just copy "user-agent" part from the request header from what I think is the license URL (I hope that is right I've just figured it out from reading posts)

I have installed linux and used yt-dlp to download what I hope is the video and audio (But this would be encrypted so I didn't bother to try it). Before learning it was encrypted I initially downloaded the individual .m4s files and learned how to combine them using InviDownloader to concatenate files (It worked but obviously left me with an encrypted file) with the init.mp4 at the top.

So now I'm at the point where I need to get the key to decrypt (Which seems like the hardest part). I understand the key is not the same as the KID. In some threads I see them using l3.py to do it (but where do I get this), in other threads they talk about using an andriod tv box (But this was too confusing for me to understand). I've tried to learn more about widevine by watching videos like this and this and I now have a very vague idea but it's all a bit much for me still.

Once I have the key I assume I can use mp4decrypt on the video, and then on audio, and then combine them. But I'm stuck on the key. I'm not expecting anyone to just give me all the answers (Though that would be wonderful), but maybe someone who understands all of this a lot better than me can point out where I've gone wrong, or the directions that I need to go from here with some easy to learn from information.

[Boldest06]

Please share the video link and/or PSSH and License with everyone.

[newbi33]

Sorry, I didn't share link originally because I didn't want to seem like I was selling people to sign up to a site because you need a phone number to watch videos on this one (but you can use disposable phone numbers they seem to work).

Here is a link to a video.

The PSSH changes per video but the licence URL doesn't.

[Boldest06]

I use Microsoft Edge and Mozilla Firefox and they won't open your link. Share the PSSH and the License.

[newbi33]

Because of widevine they only use chrome for web browser at the moment

PSSH: AAAAb3Bzc2gAAAAA7e+LqXnWSs6jyCfc1R0h7QAAAE8SEOOvxh 51nExjhofRZDP+2AQaC2J1eWRybWtleW9zIiRlM2FmYzYxZS03 NTljLTRjNjMtODY4Ny1kMTY0MzNmZWQ4MDQqAkhESPPGiZsG
Licence URL: https://wv-keyos.licensekeyserver.com/

[Boldest06]

The license is absolutely not that. Here a screenshot of how I get the PSSH and the License (Widevine):


[Attachment 73119 - Click to enlarge]

[Attachment 73120 - Click to enlarge]

License Example:

https://widevine.entitlement.theplatform.eu/wv/web/ModularDrm/getRawWidevineLicense?releasePid=5Vud1nhksGmD&account=http%3A%2F%2Faccess.auth.theplatform.com%2Fdata%2FAccount%2F2702976343&schema=1.0&token=eyJhbGciOiJSUzUxMiJ9.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.Cq95s1XvThfnuaAzx3KwC5ytNeoNcDl3HKL6og3joqXO7cRcqNZ76twiug-5B_EYWFiHx7mDCgGeSAkskjiJKcULroPPOSkaQ6XyQcS6KlRYwNM9cJ3f-D5FrA5i3gWbwbnQKYfwuHZ6Tf2ODALWm51NIB4cAhGAQegRQLDeSNTz__tLsZS6yF_0VtaIBT4AEV9OYdLYNiVQ60GGFplxLC5Z_b-RteCrw7rTL58SCdNJI5LW4jCj9Dr9-dkrTr3jl9fvnUCP-ixqBrynor-QLDkj5EKaOmXZ89gcRkfBAuO8MoePQ-Jv0AnYzutXLWJZf6QXMNp28EnN49Ubnko5Xw

Then I insert here the PSSH and the License and I receive the key/keys.

[newbi33]

I get the PSSH the same way.
But I don't understand the license. The wv-keyos is the one that is initiated by the shaka-player and that seems to be the only option other than the second url I provided.
I have tried that site you linked before I posted this thread but I've clearly put something in wrong as it didn't work