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396Final Cut Pro User Guide
7. To make the mask alpha channel visible, click the View Masks pop-up menu (next to the
effect name) and choose Black and White.
The mask’s alpha channel appears in the viewer. White indicates fully opaque mask
areas, black indicates areas outside the mask, and levels of gray indicate transparent
mask areas.
Note: You can also view the color contents of the mask. See Ways to view masks in
Final Cut Pro.
8. In the Effects section of the Video inspector, move the pointer over the effect name,
click the Apply Effect Masks button
,
and choose Invert Masks from the menu that
appears.
All mask selections for the effect are inverted (the masked and unmasked areas are
reversed).