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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 ]
Storage aspect ratio (SAR) The horizontal to vertical ratio of solely the number of pixels in each direction. [note 1] Display aspect ratio (DAR) The combination (which occurs by multiplication) of both the pixel aspect ratio and storage aspect ratio giving the aspect ratio as experienced by the viewer.
The DCI 4K standard has twice the horizontal and vertical resolution of DCI 2K (2048 × 1080), with four times as many pixels overall. Digital movies made in 4K may be produced, scanned, or stored in a number of other resolutions depending on what storage aspect ratio is used.
At the CES 2022, Samsung showed the Odyssey Neo G8, the world's first 4K monitor with a refresh rate of 240 Hz. [ 162 ] [ 163 ] It features a 32-inch mini LED 1000R curved display with 1,196 local dimming zones that supports HDR10+ with a peak brightness of up to 2,000 nits , and is G-Sync - and FreeSync -certified. [ 164 ]
On July 3, 2013, Sony announced the release of their 4K Ultra HD Media Player with a price of US$7.99 for rentals and US$29.99 for purchases. [137] [138] The 4K Ultra HD Media Player only worked with Sony's 4K Ultra HD TVs. [138] On July 15, 2013, the CTA published CTA-861-F, a standard that applies to interfaces such as DVI, HDMI, and LVDS. [139]
Free apps, such as Try Dry, can help you monitor your drinking, set goals, and track your progress, says Dr. Piccirillo. MoMo Productions - Getty Images. Know When to Get Help.