Grass Valley Aurora Edit v.7.0 - Manual (Page 211)

Luma Key video effect
Keying inserts part of one picture into another to create a composite picture. The Luma
Key effect uses the color brightness of an incoming source to specify where to cut the
hole in the background.
Description Range Option
Adjusts the luminance (brightness) level in the key signal above
which the foreground or key fill video becomes visible over the
background video. 0 to 100 Clip
Adjusts the sharpness of the key edge. 0 to 100 Gain
Lets you see the video below the clip level; used for keying from
dark graphics on a light background. On or Off Invert
Options for resize or key shape effects
Blend options for Resize and Key Shape effects
Blend options affect the characteristics of the resize or key shape.
Description Range Option
Opacity affects the entire foreground image. The default is
100%, which shows the foreground image and hides the 0-100 Opacity
background image. As you change the opacity percentage, the
foreground image blends into the background image. Use the
opacity option to create fade-ins and fade-outs with
Picture-in-Picture (PIP) and to create half-dissolves without
fully exposing the background image.0 is not visible at all and
100 is fully visible.
The O-Soft option softens the hard line that surrounds the
outside of the foreground image. You use O-Soft to blend the 0-100 O-Soft
outside border of the foreground into the background.0 is no
softness and 100 is the full softness available for the outside
region of the shape.
The I-Soft option softens hard images that are found on the
inside border of an image. One way to use I-Soft is to soften 0-100 I-Soft
a white border for the inside of a PIP.0 is no softness and 100
is the full softness available for the inside region of the shape.
Related Links
Using video effect options on page 194
08 April 2010 Aurora Edit User Guide 211
Video effects