I have a video that is encrypted and its extension is unrecognizable by players. I don’t have the encryption key either because the publisher didn’t publish the key. I wanted to decrypt it with Python, even though I don’t know what protocol it was encrypted with. Do I still need the key or if not The key could also do this, the library gave an error, anyway, I am looking for a guaranteed solution for this, what would you suggest that would work?

I tried the cryptography library, when I tried cipher, it gave me an error, and I tried to generate key, which was time-consuming and didn’t work.