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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]
The first 4K home theater projector was released by Sony in 2012. [81] Despite this, there's not many finished films with 4K resolution as of 2023. Even for movies and TV shows shot using 6K or 8K cameras, almost all finished films are edited in HD resolution and enlarged to fit a 4K format. [82]
Extremely common. Blu-ray and 4K Blu-ray make up a large share of the market, despite each segment making up a smaller market share than DVD by itself. 4K CBR; VBR; Uncommon. 4K (2160p) content released in Constant Bit-Rate (CBR) and Variable Bit-Rate (VBR) with emphasis on quality.
The resolution 3840 × 2160, sometimes referred to as 4K UHD or 4K × 2K, has a 16:9 aspect ratio and 8,294,400 pixels. It is double the size of Full HD (1920 × 1080) in both dimensions for a total of four times as many pixels, and triple the size of HD (1280 × 720) in both dimensions for a total of nine times as many pixels. It is the lowest ...
Pixel aspect ratio (PAR) The horizontal to vertical ratio of each pixel. Storage aspect ratio (SAR) The horizontal to vertical ratio of solely the number of pixels in each direction.
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.
Though the "tap, hold and load in 4K" feature is just growing in popularity, the feature was introduced in 2021. The X Support account made several posts in March 2021, informing users how they ...
x265 source code is written in C++ and x86 assembly. [3]x265 supports the Main, Main 10, Main 12 and Main Still Picture profiles [11] of HEVC (including intra-only profiles), utilizing a bit depth of either 8 bits or 10 bits per sample YCbCr with 4:2:0, 4:2:2 or 4:4:4 chroma subsampling.