OK. So PeerTube doesn't actually host anything, right? You need a streaming server to publish. Maybe someone will let you have space and bandwidth on theirs. PeerTube is just the lookup system. Is that right?
Peertube is just the software. The linked has no lookup system, it's just a site telling you about the software, linking to sourcecode & documentation, and linking to other sites that host that software.
The primary instance references on the site (i.e. the streaming server that they embed their own videos from) is https://framatube.org/
It's using torrents through WebSockets, it would be nice if the regular torrent protocol supported them. You just need to download a torrent to stream, or be one of the peers viewing to stream it to other viewers.
Peertube is just the software. The linked has no lookup system, it's just a site telling you about the software, linking to sourcecode & documentation, and linking to other sites that host that software.
The primary instance references on the site (i.e. the streaming server that they embed their own videos from) is https://framatube.org/