4K Ultra HD

technology

3840×2160 pixel resolution — four times the detail of 1080p Full HD.

Explanation

4K Ultra HD (UHD) refers to video resolution of 3840×2160 pixels, offering four times the detail of 1080p Full HD. Major streaming services including Netflix, Disney+, Amazon Prime Video, and Apple TV+ offer 4K content, often combined with HDR for enhanced picture quality. 4K streaming typically requires a 15–25 Mbps connection.

Related Terms

HD (High Definition)720p or 1080p video resolution...SD (Standard Definition)480p video resolution — older...HDRHigh Dynamic Range — video...ResolutionThe number of pixels in...Dolby AtmosImmersive 3D audio format available...

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Last updated: March 2026