You should immediately see your bottom video track appear through the subject on the top track. Position your green screen video on the top video track (V1) of the timeline, ensuring it is the active clip you will be modifying.
Quick Green Screen iMovie Workflow
If you see patches of the green background remaining, try increasing the tolerance or manually using the eyedropper tool to select the exact problem area. Adjusting the "Edge" or "Soften" settings can help blend the subject more naturally into the new background, smoothing the transition and making the composite look professional.
The screen must fill the entire frame, and you should maintain a few feet of distance between the subject and the screen to prevent color spill. While iMovie is designed for simplicity, it includes a robust chroma key tool that makes this process accessible to beginners and experienced creators alike.
Quick Green Screen iMovie Workflow
Applying the Green Screen Effect iMovie automates the keying process with a tool specifically designed for chroma keying, which saves you from manually masking complex areas. Once inside the project, drag your green screen video clip and any background media or images you plan to use onto the timeline or into the media library.
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