Peertube would be my choice, thanks to p2p one won't burden an instance if a video gets too popular. Just found a nice interface to find a good instance as a videomaker depending on topic, requirements, etc: https://joinpeertube.org/instances?profile=video-maker

As with the rest of the fediverse, autonomous institutions like universities should ideally have their own instance or join a collective. Embeds get the same p2p benefits and they seem super easy to implement