A:Answer4K refers to one of two high definition resolutions: 3840 x 2160 pixels or 4096 x 2160 pixels. 4K is four times the pixel resolution, or twice the line resolution (2160p), of 1080p (1920 x 1080 pixels). The other high definition resolutions in use are 720p and 1080i.
A:AnswerU have to find channels that show 4k programming. I go to roku channel, there's 4k programs in there, picture looks great. Unfortunately there isn't too many channels that run in 4k, directv only has 1 for free