Encrypted video file

[yologuy]

by editing the main.js and removing the sign video did the trick.
So now when I play the video, the file is decrypted and stays decrypted on the disk.
Then comparing both files, only the header changed. So I look briefly within the compiled signer module. There is a encryptDecrypt method that really looks interesting since it operates only on a 15bytes buffer, the exact same size that was changed in my file. I will probably get more time tomorrow. But I guess I'm on the right track

And of course copy/pasting the header to your video didn't work, so I guess its a kind of xor, of the first 15b of the file, I just need to find the key