Does anyone else thing this is a terrible name? Reading the topic, I immediately went to peertube.org/.com/.net to check it out. Turns out it's really just software for self hosting your own videos.
Not exactly, since you can join a node and upload there and it's also like Mastadon in that it's federated.
https://joinpeertube.org/instances#instances
Some of those are federated with eachother and you can upload to them and your videos are stored on the instance. You do not need to run your own instance but obviously it can be helpful.