It's a competitor to YouTube the same way Mastodon is a competitor to Twitter (though Mastodon is probably more popular). It's a similar service but federated.

It's a competitor to YouTube the same way Mastodon is a competitor to Twitter (though Mastodon is probably more popular). It's a similar service but federated. One neat (or overcomplicating?) thing about PeerTube is that you can follow a PeerTube account with your Mastodon account. Posted videos show up as "toots" and I'm guessing that your replies turn into comments on the video.