Mask expansion.
Grow or shrink the visible area.
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-expansion study. Reveal moving water footage through a fixed 500 px circular guide at right of a Cloud canvas. Grow the actual path-mask expansion from 0 to 105 px over 3.4 seconds, beginning at 0.8 seconds; never scale or rewrite the guide geometry. At left use Exposure[-30] “Make / room.” and two small Denim lines “One guide. / More room.” Keep the center and media fixed so the expanded visible area is unmistakable. Demonstrate positive growth only; negative shrink is unsupported in the installed renderer.
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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