Might be easier to just update backend so anyone posting to twatter or youfag , automatically archives the link and fixes the youtube url to invidio.us, resulting in seamless posts directly to archives and never directly to twitter and youtu.be
and fixes the youtube url to invidio.us
Doesn't fix anything if jootube decides to shoah a video.
Invidious instances are just 3rd party jootube frontends. They don't host the video files.
I like your idea of mirroring better
(post is archived)