How to Do Green Screen Video in iMovie and Adobe PremiereTechnically known as chroma-keying, green screening is the process of masking a video using color - removing specific parts so you can overlay one video on top of another. An obvious example is the weather, where a presenter will stand in front of what appears to be a giant map - in fact, they're standing in front of a green screen and the weather map is being added later. All you really need to g
