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Updated 09/11/2012Home » Video Glossary » Chroma Bug

Chroma Bug

The basic Chroma Bug manifests itself as streaky or spiky horizontal lines running through the chroma channel, most notably on diagonal edges.

With the advent of relatively high resolution media like DVD, people are starting to compare the video image to the original film image, not to other forms of TV. And suddenly strange problems that people accepted in a TV picture, but would never be allowed on film, look out of place. The Chroma Bug is one of the most visible artifacts around, but because it's specific to MPEG and 4:2:0 encoding, there was nothing written about it until very recently.