VAST Video Chroma Subsampling Detector
Scan your VAST Video to check the video's chroma subsampling.
What is it?
Chroma subsampling is a method used to encode videos by implementing less resolution for color information than for black/white information. A common subsampling type used for videos is 4:2:0.
Why is it important?
Chroma subsampling takes advantage of the human's visual system's lower acuity for color differences than for black/white. Savely removing information that we can't notice saves bytes, resulting in lower file sizes.