![]() ![]() If the frame below the playhead isn’t representative of the rest of the clip, reposition the playhead and reapply the effect. 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. Because the clips are connected, the two clips move together if you rearrange clips in the timeline. In the viewer, iMovie removes the green or blue from the green-screen clip to reveal the background clip behind your subject. ![]() If the video overlay controls aren’t shown, click the Video Overlay Settings button above the viewer, then choose Green/Blue Screen from the pop-up menu.Because the clips are connected, the two clips move together when you rearrange clips in the timeline. Trim and move the background video clip to match the length of your green-screen clip. ![]() Add the green-screen clip above the background clip in the timeline.The feature enables users to remove a specific colour from an image or video, allowing the removed portion of the clip to be replaced with a different visual. With your project open, add the background video clip or still image to the timeline. Chroma key is a special effect achieved by the use of green or blue screen, chroma key green or blue paint. ![]()
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