Mask layer with a feather?

Hi Guys,

I have a simple box with a mask layer on half the box and I want the mask layer to be with a feather instead of sharp masking. This is an animation.

How can I do this one?

Thank you,
Mr D

Did you use the mask feature in the Image Editor ? In that case, you have a feather stroke.

Or you could just blur your mask?

If it is a mask in the uv image editor or movie clip editor you can shift-click drag a feathered edge out from the primary mask shape.

Otherwise you could use the compositor to add a dilate/erode node or a simple blur node.