4K actually stands for 4,000 pixels. 4K, also known as Ultra HD (UHD) or UHD-1, is used when referring to content and display devices with a 4,096 x 2,160 pixel resolution. That’s a total of 8,847,360 pixels. That’s a lot more pixels—four times, to be precise—in comparison to Full HD.
Now, 8K aka UHD-2, is the natural evolution of UHD-1, as it proposes using more pixels and the same techniques as UHD-1, including Wide Colour Gamut (WCG), HDR, High Frame Rate (HFR), NGA and Content-Aware Encoding (CAE).
8K UHD refers to a horizontal resolution of 7680 pixels and a vertical resolution of 4320 pixels. This means that 8K TVs have two times the horizontal and vertical resolution of 4K UHD (3840 x 2160) TVs. Generally, 8K UHD has 33.2 megapixels (with one megapixel being either one million or 1,048,576 pixels), while 4K UHD has 8.3 megapixels. Esentially, 8K has four times as many pixels overall, and 16 times as many pixels as Full HD (1920 x 1080).
BROADCAST AND STREAMING
The 4K boom has been witnessed in the market for over a decade now, by live and on-demand services. On the OTT side, SVOD platforms have demonstrated their commitment to 4K. Out of the Netflix catalogs, 17% are in 4K, and reportedly 30% of Netflix’s 193 million subscribers have the UHD package, making it the largest 4K platform in the world with 57 million subscribers.
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