Grass Valley NewsEdit XT v.5.5 - Manual (Page 279)

Effects and What They Do
Digital News Production 277
Key Shape
You can use the Key Shape effect with a single video track or with both video
tracks (V1 and V2). You can also use a key shape effect in conjunction with
these effects: Blur, Mosaic, Color Effect, Proc Amp, Color Invert, Mirror
Vertical and Mirror Horizontal.
When you use a Key Shape effect with one video track, you can create a variety
of effects. You can apply a Blur or Mosaic effect in conjunction with the key
shape to block out a face. You can also use this effect for other purposes,
including creating a highlight with Proc Amp and bringing up the gain of the
video image through a small hole, adding a gray blotch if the Blur and Mosaic
effects aren’t sufficient, or creating a spotlight effect.
You use two video tracks with the Key Shape effect in much the same way as
you use a PIP. However, a Key Shape effect only provides the shape instead of
resizing the image. In order to see the key shape image, you need to choose V2
to be over V1 in the Video Effects Tool (Select
V2/V1 from the Track drop-
down box in the Effects tab). The key shape appears to “punch a hole” through
V1 with the V2 image displaying in the key.
To position a Key Shape effect, drag the image in the Video Window or use the
Left and Right arrow keys on the keyboard.
Option Range Description
X-Position -32 to +32 (4:3)
-128 to +128 (16:9)
Moves the key shape left or right.
Y-Position -24 to +24 (4:3)
-72 to +72 (16:9)
Moves the key shape up or down.
Size 0 to 4 Moves the key shape closer or farther away.
X-Aspect 0 to 4 Stretches or shrinks the key shape from the left and right.
Y-Aspect 0 to 4 Stretches or shrinks the key shape from the top and bottom.
Shape Change the shape of the Key Shape effect by clicking the Change button on the Effects tab,
selecting a new shape, and clicking OK .