Once you've gone through that, here are some other helpful resources: A foundation in the basics now will prevent much frustration later. If you'd like to join us on Discord, you can do it here! Are you looking for critiques for your piece or are you showing off someone else's work that you've found that is inspirationally excellent? If you post a video, please explain in the title of your post why you're posting it. We are not here to be sold to or spammed, so no posting of your AE templates, please. We're here to help with your After Effects problems, critique your pieces, and sometimes provide a spot of inspiration. If the frame below the playhead isn’t representative of the rest of the clip, reposition the playhead and reapply the effect.Don't downvote a relevant submission you simply don't like kindly explain in a comment how it could be improved - anonymous downvotes don't help anybody.

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.

With your project open, add the background video clip or still image to the timeline.

4k green screen footage