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2160p is the shorthand name for a category of video modes. The number 2160 represents 2,160 lines of vertical resolution, while the letter p stands for progressive scan or non-interlaced. 2160p is considered an Ultra High Definition video mode. The term usually assumes a widescreen aspect ratio of 16:9, implying a horizontal (display) resolution of 3,840 pixels across and a frame resolution of 3840 × 2160, or exactly 8,294,400 pixels. The frame rate in hertz (Hz) can be either implied by the context or specified after the letter p, such as 2160p30, meaning 30 frames per second.
2160p is referred to in marketing materials as "Ultra High Definition", with many publications choosing to abbreviate it to "4K". The first video game consoles to natively support gaming at this resolution were the PlayStation 4 Pro and Xbox One X.