What is Chroma Keying?

Chroma Keying is the combination of two video images into a single picture. A single defined color in one image is designateed and electronically replaces that color with a second image, leaving the rest of the picture untouched. Chroma keying is referred to as bluescreens or greenscreens and is most commonly seen watching the weather. Chroma keying allows you to transport a subject to any other location.