Self-hosting video in the modern day is an absolute bloody nightmare. Don't do it unless you have no other choice.

You may, however, want to investigate one of the other video hosting options out there who focus on business use. I've had some conversations with Wistia recently, and whilst they're wildly inappropriate for my use case, in general they seem quite impressive. Other options I'm aware of include Brightcove or hosting your video with a CDN.