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Chapter 4, Setting Up Realtime Effects withAdobe Premiere Pro
Creating a mask effect
The Matrox mask effect lets you choose from dozens of soft-edged cutout shapes
that you can apply to a clip to superimpose it onto another clip.
°To set up a Matrox mask effect:
Click the triangle beside Matrox Mask to expand the property list.
•Select Shape Click the button to the right of the current pattern to see the
list of available mask patterns.
•Shape Transparency Sets the transparency o f the shape and the ar ea
around the shape. At the default setting (0), the shape is completely opaque
and the area aroun d the shape is tran sparent. Dragging the slider to the lef t
increases the transp arency of the shape. Dragging the slider to the right
decreases the transparency of the area around the shape.
•Outside Transparency Sets the transparency level of the ar ea outside
your mask.
¦NoteThe Outside Transparency setting is applicable only if you’ve
scaled down, moved, or rotated your mask using the transform controls so that
the mask doesn’t cov er the entire screen. When Outside Transparency is
applied, the Shape Transparen cy sets the overall transpa rency of the entire
clip.
•Softness Applies softness to the edges of your mask.
•Invert Mask Select this option if you want to invert the opaque and
transparent areas of your mask.
•Apply Crop to Video Only Select this if you want the mask to be
squeezed to fit your cropped clip. If you don’t select this option, the mask
will be cropped by the same amount that you crop your clip.
Click here to
select a new
pattern