Ultra-high-definition television - Wikipedia
https://en.wikipedia.org/wiki/Ultra-high-definition_television
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...
4K Ultra HD Video - YouTube
https://www.youtube.com/channel/UC3Vg4XEW9ZIw9BEbv4GyKXw
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4K | Ultra HD | Full HD - Какая разница? - Маркетплейс TimeLine
https://timeline.ru/shop/panels/4k-ultra-hd-full-hd/
8K UHD 4320p.