I feel like it would be best to proxy YouTube, or subscribe to paid indie channels like nebula, but without a user base and without ad revenue or subscription revenue I don’t know how quality content can come to PeerTube. Maybe I’m just missing the content but when I’ve checked it’s all very low quality, just random unedited webcam vblogs mostly.
It uses P2P when multiple users is watching the same video. A PeerTube server can also mirror another PeerTube server’s videos and function as a peer.
You can see it this screenshot, that I’ve downloaded most of the video data from other peers.
PeerTube is build on ActivityPub, just like Lemmy. Right now federation is broken between Lemmy and PeerTube. When it’s fixed, you’ll be able to subscribe to PeerTube channels from here and comment as well.
Fix for the federation is here https://lemm.ee/comment/18936804