If you've ever seen behind-the-scenes footage of a movie, TV show, or commercial, you have likely spotted giant solid green walls or curtains. These are what are referred to as green screens, and are ...

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 ...