Green screens, or chroma key, to give the effect its real name ... so the much cheaper green screen won the day. But in the video below the break they manage to replicate it with a standard ...

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 ...

(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 ...