YCbCr 4:2:2

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  • FourCCs: YUY2, UYVY

YUV 4:2:2 is a packed YUV format in which a pair of consecutive pixels is represented by 1 Y sample each but share a U sample and a V sample.

This type of data may be packaged in a container format with a a FourCC of YUY2 which indicates the following byte formatting:

 Y0 U Y1 V

The first pixel is a a function of (Y0, U, V) and the second pixel is a function of (Y1, U, V). Alternately, the FourCC UYVY is used to indicate YUV 4:2:2 data with a byteswapped order:

 U Y0 V Y1

For trivia, the 2 in YUY2 most likely refers to the number of bytes needed to represent a single pixel. Since 4 bytes represent 2 pixels, an average of 2 bytes are required to represent a single pixel in this scheme.