Youtube is such a platform, odysee and that sort of things are, peertube is not.

Peertube is the free software anyone can use to host video content in a decentralized and federated manner. It's akin to what the personal blogs were on the web a few years back

For the federated part, peertube is part of the fediverse through activitypub.

some real world example of peertube usage: KDE https://conf.tube/accounts/kde/video-channels PINE64: https://tilvids.com/a/pine64tilvids/video-channels Krita: https://share.tube/a/kritafoundation/video-channels Free Software Foundation: https://framatube.org/a/fsf/video-channels