Operation Manual

Overlay clips 145
Adding borders to overlay clips
You can add a border to an overlay clip. For example, you add a white
border around an image to make it look more like a photo.
To add a border to an Overlay clip
1 In the Attribute tab, click Mask & Chroma Key.
2 Click the Border arrow keys to set the thickness of the border for
the Overlay clip.
3 Click the Border color box located beside the arrow keys to set the
color of the border.
Blending overlay clips with the background
You can specify how overlay clips blend with the background by using
different “Key” options:
• Chroma Key — used to remove a specific color from an overlay
clip. For example, if you capture a subject against a “green screen”
background or cover part of a subject with green, Chroma Key can
be used to remove the green. You can then place the subject on
another background to change the surroundings or create a
special effect such as the appearance of a hovering object.
• Gray Key — adjusts the transparency of the overlay clip based on
tone (light/dark values), rather than color.