The color that iMovie removes is based on the dominant color in the frame at the position of the playhead when you choose Green/Blue Screen from the pop-up menu. In the viewer, the clip shot against the green or blue backdrop has the green or blue removed, and the clip below shows through the areas that were green or blue, creating a composite image. Click the pop-up menu on the left and choose Green/Blue Screen. If the video overlay controls aren’t shown, click the Video Overlay Settings button.ģ. When you see the green Add icon (+), release the mouse button.Ģ. In the timeline, select a clip or range that you shot against the green backdrop, and drag it above a clip in your project.For more information, see Apply audio effects to clips. You can reduce the volume of either clip so that sound from the other clip stands out. The audio from the original clip and the audio from the green-screen or blue-screen clip play simultaneously. You can also drag the green-screen clip over a solid-color or animated background clip. For example, you could record a friend dancing in front of a green or blue backdrop, and then place that video over a clip showing a starry sky, so that your friend appears to be dancing in the sky. This is called a green-screen (or blue-screen) effect.

You can record video in front of the green backdrop in the Digital Media Lab, and then “cut out” the subject and superimpose it over another video clip or image.

Change background in imovie