Why is 2160p video called 4K?
In: 4205
The real answer is because 4K sounds better than 2160p.
HD tv and video was out and 1080 was pretty much in the vernacular. Now they had this better HD picture but how do you market that? Call it something flashy that can stick. 4k sticks. It also happens to be about 4x more pixels than the other HD format that was out.
Nobody would have bought the new tv’s if they just said 2160 on them or HD+, so they had to come out with a better way to sell and get mass adoption.
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