In client video player?

Interestingly, it works on your 5.0.0-rc1 server, via Chrome and the MM OSX app I have installed. Is this supposed to be a default feature? Is there something that has to be enabled on the MM server-side? Are there any pre-reqs that must be installed for videos to play? I’m running my server on CentOS 7 so there’s a chance I missed a package, or I am using an older package of whatever handles the video player.

Please advise.