Learn how to replace your background with images on ManyCam using the Chroma Key feature, also known as Green Screen effect. *What's Chroma Key?* Chroma key or Green Screen is a visual effect of compositing two images together by using color. The backdrop is selected and removed so that you can use any other video source as your background. When using a bright green or blue backdrop, you get much better results because the colors are easily distinguishable. Chroma keying is heavily used in the p