What is 4k in TV?

[Gabe]

We often see 4k when buying a TV, TV box, or projector, what is 4k anyway?

Actually, 4K is short for 4K resolution, which refers to a display or content that has a horizontal resolution of 4,096 pixels and a vertical Resolution of 2,160.

4K TVS (2160p) have two common resolutions: 3840×2160 and 4096×2160.

Like the current 1080p and 720p, 4K can actually be called 2160p. More and more video resources now support 4K, and corresponding hardware facilities such as 4K TVS are also widely available (although there are still many fake 4K).

 

[Gabe]

Resolution: In rec.2020, the aspect ratio of a single-pixel is 1:1, and pixels are addressed from left to right and top to bottom.



Ultra high definition 4K: 3840 horizontal resolution, 2160 vertical resolution, 16:9 aspect ratio, a total of about 8.3 million pixels.



Ultra high definition 8K: 7680 horizontal resolution, 4320 vertical resolution, 16:9 aspect ratio, a total of about 33.2 million pixels.

 

[Adney]

Choose a TV box that supports 4K you can get a better viewing experience. So with the 4K TV box, what are the conditions to see 4K film and television content?


Currently, watching 4K video requires these three basic conditions.
1. Your TV must be 4K,
2. Your TV box needs to support 4K
3. You need 4K video sources.