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Ultra HD Blu-ray (4K Ultra HD, UHD-BD, or 4K Blu-ray) [2] [3] is a digital optical disc data storage format that is an enhanced variant of Blu-ray. [4] Ultra HD Blu-ray supports 4K UHD (3840 × 2160 pixel resolution) video at frame rates up to 60 progressive frames per second, [ 4 ] encoded using High-Efficiency Video Coding . [ 4 ]
Warner Bros., which used to release movies in both formats prior to June 1, 2007, often used the same encode (with VC-1 codec) for both Blu-ray Disc and HD DVD, with identical results. In contrast, Paramount used different encodings: initially MPEG-2 for early Blu-ray Disc releases, VC-1 for early HD DVD releases, and eventually AVC for both ...
The studio scrapped the HD DVD version of Bee Movie, which, on May 20, 2008, joined Face/Off and Next in becoming the studio's first Blu-ray releases since becoming HD DVD exclusive. [70] In April 2009, Warner Home Video announced it would trade up to 25 HD DVDs for the Blu-ray equivalents, charging only for shipping and handling. [71]
Early 4K Blu-ray release at Best Buy. A 4K Blu-ray Disc player was also released. On January 7, 2013, Sony announced that it would release "Mastered in 4K" Blu-ray Disc titles sourced at 4K and encoded at 1080p. [77] "Mastered in 4K" Blu-ray Disc titles can be played on existing Blu-ray Disc players and have a larger color space using xvYCC.
On August 2, 2016, Microsoft released the Xbox One S, which supports 4K streaming and has an Ultra HD Blu-ray disc drive, but does not support 4K gaming. [90] On November 10, 2016, Sony released the PlayStation 4 Pro , which supports 4K streaming and gaming, [ 91 ] though many games use checkerboard rendering or are upscaled 4K. [ 92 ]
On September 5, 2014, the Blu-ray Disc Association announced that the 4K Blu-ray Disc specification would support HEVC-encoded 4K video at 60 fps, the Rec. 2020 color space, high dynamic range (PQ and HLG), and 10-bit color depth. [87] [88] 4K Blu-ray Discs have a data rate of at least 50 Mbit/s and disc capacity up to 100 GB.
Blu-ray or Bluray rips (once known as BDRip) are encoded directly from a Blu-ray disc source (usually from the Region A/USA Blu-Rays) to a 2160p, 1080p or 720p (depending on the source), and use the x264 or x265 codec. [clarification needed] They can be ripped from BD25, BD50 disc (or UHD Blu-ray at higher resolutions or bitrates), and even ...
Ultra HD Blu-ray – 2160p / 4K (3840 × 2160 resolution) format Blu-ray Disc as specified by Blu-ray Disc Association; IMAX – A film theater format that historically has been innovative in creating a more realistic viewing experience; High Efficiency Video Coding (HEVC) VP9 / WebM; 22.2 surround sound – The audio component of Super Hi-Vision