I finally uploaded the tape. It's not as weird as the first video, but I'll maybe find something with this.
So far, no clues I could find.
The tape is about hackers. Basically it tells you what to do about guys exploiting. I guess it's helpful?
The site I used to decipher the code: https://www.dcode.fr/rot-cipher
0:00 Intro
0:31 Tape
1:44 Announcement about John Doe
2:02 wtf?
2:14 Ending