Quality Is Lost When You Convert a Graphic from RGB to YUV on a Computer by Using an S3 Savage4 driver (228383)

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YUV Color System is a color-encoding scheme for natural pictures in which the luminance and chrominance are separate. The human eye is less sensitive to color variations than to intensity variations, so YUV allows the encoding of luminance (Y) information at full bandwidth and chrominance (UV) information at half bandwidth.

The primary colors in color video are red, green, and blue (RGB). RGB is often used to describe a type of video color-recording scheme and the type of equipment that uses it. It also describes a type of computer color display output signal comprising separately controllable red, green, and blue signals (as opposed to composite video, in which signals are combined before output). RGB monitors typically offer higher resolution than composite monitors.

More complex graphics may not be able to stand the conversion from RGB to YUV without losing quality. Data in a YUV format shares every two pixels in a Y component, and every four pixels in U and V components. This results in image details, like the text, being lost in the RGB-to-YUV conversion. Also, the program you use for the conversion may just delete pixels instead of merging them, causing the quality to be lower.

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