Operation Manual

146 Corel VideoStudio X9
• Multiply — multiplies the value of the overlay colors with the
underlying colors and divides by 255. The result is darker than the
original colors. White has no blend effect; black always blends to
black. You can use the Blend/Opacity slider to adjust the
tran
sparency.
• Add Key — adds the color values of the
overlay clip with the
values of the underlying colors. You can use the Blend/Opacity
slider to adjust th
e transparency.
The settings available depend on the type of key that you choose.
Exp
eriment with the settings to achieve the look you want.
To blend an overlay clip with the background by using Key
settings
1 Click Mask & Chroma Key in the Attribute tab.
2 Enable the Apply Overlay Options check box, then choose one of
the following settings from the Type drop-list:
• Chroma Key
• Gray Key
• Multiply
• Add Key
If you choose Chroma Key, use the eye dropper tool
to pick a
color in the Preview Window and adjust the color simila
rity value
Without Chroma Key
With Chroma Key