You can simply follow and interact with Peertube instances with your Mastodon accounts, but you can also connect your Peertube accounts.
You will be able to upload your videos with the app and contribute to make this social network grow.
If you want to know more about Peertube: https://joinpeertube.org/en/
And see how to use it with Mastalab:
Server run by the main developers of the project It is not focused on any particular niche interest - everyone is welcome as long as you follow our code of conduct!