HTML5 (MSE-LD) low latency playback
It can be required for webinars, broadcasting sports for bets, or some kind of remote control.
Right now Flash is scheduled for graceful removal in modern browsers, so WebRTC was added to browsers, but it has limited support for audio and video codecs (not all flavors of H264 are supported, no AAC support).
So we offer a new way to solve this problem and allow watching video with a built-in HTML5 mechanism and really low latency.
You don't need anything except HTTP or HTTPS to run this, so it may be a good way to play video in restricted environments.