High Efficiency Video Coding (HEVC)
HEVC , Also known as H.265, this new video codec will compress video files to half the size possible using the most-efficient current encoding format, MPEG-4, aka H.264 (used on Blu-ray discs and some satellite TV broadcasts).
HEVC is twice as efficient as MPEG-4/H.264, and experiences only a minimal loss in quality. As a result, current content will need only half the data to stream over Netflix, and it will become viable to stream 4K content. (Netflix recommends a 15 Mbps or better broadbandconnectionfor streaming 4K.)
Simply, The Best Quality In Less Data ...