Mask Invert

Inverts the mask, removing the shape and keeping everything else. The result is exactly 1 minus the mask.

mask-invert takes a boolean. true and 1 both enable it, and other truthy spellings are accepted. The default is false.

Use mask-invert to punch a hole in a still frame rather than cut it to a shape.

mask applies to still frames only. Video, animations and spritesheets draw no mask.

Examples

Each example renders a still of the same video.

Without mask-invertmask-invert=true

mask=ellipse alone keeps the inside of the shape.

https://assets.imgix.net/Croatia.mp4?w=600&fm=png&mask=ellipse

Default

Without mask-invert