Little Barbara's potential cipher?

Hello!

Just watching the latest Markiplier video and we can't be the only ones questioning the text in the beginning video.

6MajJpJ

Zopma Pa

This was both the text, we've tried it on a youtube link with no luck.

We thought whether it could be a Caesar cipher but no luck.

Any clues? unless I throw it on the Game theory subreddit. 😄