Is there white-label open source (i.e. host it yourself) video hosting services like Vimeo / Mux / YouTube / NetFlix? The closest I found was NodeTube but I think it would need a UX/UI redesign before govts or universities would be ready to deploy it on their own.
Fwiw, universities have long paid for their own white label YouTube clones from various companies; at a bare minimum Canvas has been around forever. It just wasn't free (as in beer or otherwise).