Partially correct. You can self host peertube instances. What differentiates it from YouTube is:
Instances can share their video lists with other instances via ActivityPub. Even to Mastodon and Lemmy.
PeerTube video player is peer to peer. You can download the video from the server directly or from another peer watching the same video. This may be helpful for livestreams.
Partially correct. You can self host peertube instances. What differentiates it from YouTube is:
Definitely did not realize this, that is really cool! Thanks for sharing.
Also its a separate okatform. Could be used to cache YT videos but that’s not its primary purpose.