Chroma Subsampling

Category: electronics

A video encoding compression strategy that reduces color data resolution in favor of luminance data to save bandwidth.

Expressed as ratios like 4:4:4, 4:2:2, or 4:2:0, chroma subsampling leverages the human eye's higher sensitivity to brightness variations over color fine points. While fine for film, aggressive subsampling (4:2:0) makes small text on a PC monitor look blurry and fringe-heavy.

Common Examples

• To use the television as a clear desktop monitor, you must configure the graphics output to pass uncompressed 4:4:4 chroma subsampling.
• High-bandwidth HDMI 2.1 links are required to carry a full 4K resolution mix alongside uncompressed 4:4:4 chroma data states.