Keying

Keying is a digital editing technique used to remove or replace a specific color or background from a video or image. Commonly seen in weather reports or film production, it involves isolating a color—like green or blue—so that it can be replaced with a different background or visual effect. This process allows for seamless integration of subjects into various environments, creating the illusion that they are in a different setting. Keying is foundational in visual effects, enabling filmmakers and broadcasters to craft immersive, visually engaging content efficiently.