Arts & Entertainment

What Is a Green Screen (Film)? Learn About the Advantages and Disadvantages of Using a Green Screen in Film Production and 5 Tips For Making a Green Screen at Home

Written by the MasterClass staff

Last updated: Sep 29, 2021 • 5 min read

A green screen is a key component in a film and television production process known as “chroma keying,” in which foregrounded action is combined with separately filmed or constructed background footage. The process works by filming actors in front of large, bright green backdrops, then isolating and removing that green color range, and replacing it with a different background.

It has been utilized for many purposes in filmmaking, making characters and scenes appear to take place in far-off or perilous locations—when in fact the footage was shot on a sound stage in front of a green screen.