Ok, interesting, I installed my own PeerTube instance on the NUC at home where I already run Home Assistant. It's fairly slow but it seems to only matter for transcoding newly uploaded videos which doesn't happen too often.
What I'm looking for is to be able to have an alternative UI to be able to subscribe to other chanels on the fediverse and uploading my own videos.
In the longer run I will open the instance to my close family members so we can share videos internally without the need to use some 3rd party to do so. I have also many home videos from the 90ies which I'd like to share with them.