Mux is awesome. We are using Mux for Instill. Super reliable and by far the most developer friendly option we found. There is ways to do it cheaper for sure, but when evaluating all the time spent setting up and maintaining all the infra required to do that (especially since we want to get as close to zero downtime, working on almost all device types, fast global delivery, wanted to get Instill up and running fast etc.) we decided it was well worth the cost.

Also funnily enough, Vimeo uses Mux (their analytics offering Mux Data, but still pretty crazy).

As amazing as Mux is (seriously, I absolutely love Mux) it's not very accessible to the average content creator because it's API-only.

Doesn't Reddit use Mux? Reddit's video player is atrocious. I'm not sure whether it is the fault of Reddit or Mux though.