At the University of Nebraska–Lincoln, we created our own video hosting site, https://mediahub.unl.edu/ (https://github.com/unl/UNL_MediaHub) to self-host videos for when avoiding government or k-12 firewalls is desirable as well as integrating with rev.com for captioning.
It's really unfortunate that higher education hasn't banded together more often to develop projects of mutual interest.