Cut noise out with a mask

Show the noise only inside a shape, for example a logo, or fade it with a soft vignette.

1. Make the mask image: a PNG with the shape opaque and the rest transparent works best. A black-on-white silhouette (JPG or opaque PNG) also works, because the mask then uses brightness.
2. In section 08 · Mask, press Load image. Apply mask switches on.
3. If the noise appears outside the shape, tick Invert.
4. Set Width and Height in section 02 to the aspect of the mask. The mask is stretched to the canvas size.
5. Export:
6. PNG · current frame keeps the transparency.
7. Record animation bakes the mask into the video together with the background you chose in section 09 (a solid colour, or an image with Cover/Contain). Transparent video is only possible where the browser can record alpha.

Ideas

• A branded texture inside a logo silhouette.
• A feathered vignette from a radial-gradient PNG.
• Composite passes: the same noise with two different masks.

Reference: 08 · Mask and 09 · Export.