Peertube is a feration protocol for YouTube-like video hosts to interact with eachother. Or more precisely, it's an implementation of ActivityPub, like Mastodon, focused on video hosting.
LBRY appears to be some kind of cryptocurrency thing. I don't know. Looks shady.
Thanks for the response, not sure why my request had been downvoted :/
I've used LBRY in the past, its decentralised video hosting as I understand it. But also allows for content producers to monetise their stuff. kauffj mentions it above - https://news.ycombinator.com/item?id=21513640
LBRY appears to be some kind of cryptocurrency thing. I don't know. Looks shady.