Image:YUV UV plane.jpg - Wikipedia, the free encyclopedia
RGB to YUV conversion with different chroma sampling using C++, - CodeProject
Ben Cox (EOL @benjojo@benjojo.co.uk) on Twitter: "But what has this got to do with the green screen? Well. YUV = (0,0,0) is green: https://t.co/3BvHR9ntnj The data you are seeing, is the codec