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4:1:1

A sub-sampling standard in which the horizontal color resolution is quartered and the bandwidth is halved, compared to no chroma subsampling. Initially, 4:1:1 chroma subsampling of the DV format was not considered to be broadcast quality and was only acceptable for low-end and consumer applications, such as the DV tape format, but subsequently 4:1:1 chroma sampling found its way into electronic news production.