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629Final Cut Pro User Guide
If you’re animating a Draw Mask, you can keyframe its control points numerically in the
Video inspector. To reveal these parameters, click the Control Points disclosure triangle
at the bottom of the Draw Mask section of the Video inspector. See Mask controls in
Final Cut Pro.
Mask controls in Final Cut Pro
The Shape Mask and Draw Mask controls appear in the Video inspector. You use these
controls to adjust how the mask is drawn and how each mask operates upon an image. You
can also fine-tune mask control point positions.
Shape Mask controls
The Shape Mask contains the following adjustable controls:
• Radius: A slider that changes the mask’s size.
• X: A slider that adjusts the width of the mask.
• Y: A slider that adjusts the height of the mask.
• Curvature: A slider that changes the mask shape. One extreme of the curvature
continuum is a perfect rectangle. The other extreme is an oval or a perfect circle.
• Fill Opacity: A slider that adjusts the opacity of the image inside the mask selection.
• Invert Mask: A checkbox that, when selected, reverses the mask—swapping its solid
and transparent areas.
• View: A pop-up menu that switches between the original image and the masked image
(with its transparent areas).
• Feather: A slider that feathers (softens) the edges of the mask. Positive feathering
values soften the mask from its edge outward. Negative feathering values soften the
mask from its edge inward. Feathering the edge of a mask can make the masked object
blend better with the background.