Definition: A high-resolution video format with approximately 4,000 pixels across the horizontal axis.
Explanation
4K video refers to a video resolution standard that offers roughly 4,000 pixels horizontally, providing significantly sharper and more detailed images than lower resolutions like 1080p. It is commonly used in televisions, monitors, and digital cinema. The data rate required for 4K video playback depends on the compression and bitrate rather than the total file size, with typical compressed streams requiring between 20 to 60 Mbps.
Example
When playing a 4K movie on a smart TV, the USB port only needs to deliver data at the video’s bitrate, such as 60 Mbps, which USB 2.0 ports can handle despite their lower maximum transfer speeds compared to USB 3.0.
Who This Is For
This term is useful for technology enthusiasts, video content creators, smart TV users, and anyone interested in understanding video quality and data requirements for modern media playback.
Related Terms
USB 2.0, USB 3.0, HEVC, bitrate, smart TV
Also Known As
Ultra HD, UHD