Inverted alpha mattes.
Reveal content outside a matte's opaque region.
Try it in your agent.
Use this prompt as a starting point. Review the result, then ask for the details you want to change.
A prompt to start from
Use Strata. Create an eight-second silent Strata knockout composition. Put “Look / through.” in large neutral Exposure[-30] at left on Bone. On the right, place a moving coastal clip beneath a Sea panel. Use the editable word “OPEN” as an inverted alpha matte on the Sea panel, so the panel remains outside the opaque letters and the footage shows through their cutouts. Let the text opening settle slightly upward during the first three seconds. Preserve alphaInverted on the coloured panel, with Text as the matte source and an independent unmodified video beneath.
A few useful details.
How do I try this with my agent?
Copy the prompt into your supported local agent with Strata installed. Review the preview, then ask for the changes you want. The composition stays editable as you refine it.
Where does the video render?
Strata previews and renders locally on an Apple Silicon Mac. The local engine is free; your agent’s subscription or usage costs are separate.
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