Great question @ricardoharvin , I just had a play around with uploading a new file with capitalised tags and CamelCase on the original as well.
Nothing worked 😞
No matter what you do on PeerTube, it will remove the capitalisation from combined words, even if you've written it in CamelCase to begin with.
I'll file an issue about this on the PeerTube github if there isn't one already.