Color isolation is a technique used in post-production to extract a specific color or range of colors from a video or image. This can be useful for a variety of purposes, such as creating a color-graded look, removing unwanted colors from a scene, or creating a mask for compositing.
In After Effects, there are several different ways to isolate color. One common method is to use the Color Keyer effect. The Color Keyer allows you to select a specific color or range of colors and then make those pixels transparent. This can be useful for creating a clean matte for compositing or for removing unwanted colors from a scene.
