Precisely, yep! It follows the same rules as subscribing to communities on Lemmy however - if you're the first on an instance to subscribe, it may not pull the full backlog of videos - and at least one person needs to be subscribed for the instance to continue getting updates from the channel.

Try heading to !thelinuxexperiment_channel@tilvids.com for example, and you'll see Nick's channel come up as a community and each video that they upload will be its own "post".

Note that when you lookup stuff on PeerTube, you have to use the channel name - not the uploader's username. So the one I linked would work, but if you replaced the start with thelinuxexperiment it wouldn't work, since that is a user and not a channel.