Decrypting

Using MP4Decrypt

Download and extract MP4Decrypt

Open a new command prompt as administrator and change directories to the MP4Decrypt bin folder.

Place your encrpyted video and encrypted audio files in this bin folder as well

Decrpyt the video / audio files by using mp4decrypt.exe --key xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx:xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx inputfile outputfile

inputfile being the your encrypted video / audio file and outputfile can be named whatever you choose.

xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx:xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx is in KID:KEY format

You should now have playable files.

Using FFmpeg

Download and extract FFmpeg

Open a new command prompt as administrator and change directories to the FFmpeg bin folder.

Place your encrpyted video and encrypted audio files in this bin folder as well

Decrpyt the video / audio files by using ffmpeg -decryption_key xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx -i inputfile outputfile

inputfile being the your encrypted video / audio file and outputfile can be named whatever you choose.

xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx is in KEY format

You should now have playable files.