Quick Answer: High Efficiency Video Coding, also known as H.265 and MPEG-H Part 2, is a proprietary video compression standard designed as part of the MPEG-H project as a successor to the widely used Advanced Video Coding. The standard was published in 2013. In comparison to AVC, HEVC offers from 25% to 50% better data compression at the same level of video quality, or substantially improved video quality at the same bit rate. It supports resolutions up to 8192×4320, including 8K UHD, and unlike the primarily eight-bit AVC, HEVC's higher-fidelity Main 10 profile has been incorporated into nearly all supporting hardware. The High Efficiency Image Format is a container format whose default codec is HEVC. While AVC uses the integer discrete cosine transform with 4×4 and 8×8 block sizes, HEVC uses both integer DCT and discrete sine transform with varied block sizes between 4×4 and 32×32.