Mask feather.
Soften the edges independently along X and Y.
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 mask-edge study with the packaged workshop clip. On Bone, set “Soft / edges.” at left and reveal the moving workshop inside a large elliptical window at right. Apply mask feather of 90 px horizontally and 55 px vertically, leaving the footage itself sharp. The perimeter should blend softly into the canvas; do not blur the video or substitute a gradient track matte. Preserve the separate X/Y feather values on the mask and verify they visibly change the edge.
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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