What is the purpose of using a green screen in video production?

The purpose of using a green screen in video production is primarily to allow for background replacement and special effects. This technique, known as chroma keying, enables filmmakers to composite two images together by removing the background color (green, in this case) and replacing it with a different image or video. This process is widely used in various forms of media, including films, television shows, and online content, as it provides the opportunity to create fantastical environments and visuals that would be impossible or impractical to capture in real life.

Utilizing a green screen allows creators the flexibility to set their scenes in various locations digitally, whether it's a serene beach, a bustling city, or even outer space. As a result, it significantly expands creative possibilities while keeping production costs manageable, since elaborate sets and locations may not be needed.