For the electronic music project, see Chroma Key. For musical tonality depending on key, see Key coloration. For Cromer Quay, see Cromer. "Green screen" redirects here. For other uses, see Green ...

(1) (Color Key) See prepress proof. (2) Also called "chroma key," it is a technique for superimposing one video image onto another. Widely used to place an interesting scene behind people such as ...

The technique is also known as chroma key compositing, and it’s generally used to merge two images or videos together based on color hues. Usually you see an actor filmed in front of a green ...