Lionsgate, Paramount, and MGM have joined forces to launch Epix, an HD television channel and accompanying online 720p streaming service.
The Epix TV network will air movies that are in the "pay-TV" window, those weeks before a film appears on DVD in which it is available on pay-per-view or HBO, among others.
Epix viewers can access the same material online, on demand, at Epixhd.com. The video is offered through Flash and is multi-bitrate enabled; the player checks the available bandwidth every ten seconds to see if a larger or smaller stream is required. Epix currently creates six different encodings of each film which range from HD 720p support all the way down to 500Kbps (cell phone quality).
Source: ars technica.