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  2. Ultra HD Blu-ray - Wikipedia

    en.wikipedia.org/wiki/Ultra_HD_Blu-ray

    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]

  3. Ultra-high-definition television - Wikipedia

    en.wikipedia.org/wiki/Ultra-high-definition...

    Ultra-high-definition television (also known as Ultra HD television, Ultra HD, UHDTV, UHD and Super Hi-Vision) today includes 4K UHD and 8K UHD, which are two digital video formats with an aspect ratio of 16:9. These were first proposed by NHK Science & Technology Research Laboratories and later defined and approved by the International ...

  4. High-definition video - Wikipedia

    en.wikipedia.org/wiki/High-definition_video

    High definition video (prerecorded and broadcast) is defined threefold, by: The number of lines in the vertical display resolution. High-definition television (HDTV) resolution is 1,080 or 720 lines. In contrast, regular digital television (DTV) is 480 lines (upon which NTSC is based, 480 visible scanlines out of 525) or 576 lines (upon which ...

  5. Rec. 2020 - Wikipedia

    en.wikipedia.org/wiki/Rec._2020

    Rec. 2020 defines a bit depth of either 10 bits per sample or 12 bits per sample. [2] 10 bits per sample Rec. 2020 uses video levels where the black level is defined as code 64 and the nominal peak is defined as code 940. Codes 0–3 and 1,020–1,023 are used for the timing reference. Codes 4 through 63 provide video data below the black level ...

  6. ‘Caught in 4k’: What the slang phrase really means - AOL

    www.aol.com/news/caught-4k-slang-phrase-really...

    The online dictionary explains that “4k” number “Refers to 4,000 pixel resolution, a very high resolution for video and digital photography that results in clear images.”

  7. Sad Note on Veterinarian's Exam Door Is a Heartbreaking ... - AOL

    www.aol.com/sad-note-veterinarians-exam-door...

    In the video she shared, she was waiting to be seen by the vet when she caught sight of a heartbreaking sign on one of the doors. "Please speak softly, someone is saying goodbye," the sign read ...

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