Grass Valley Media Conversion - Manual (Page 54)

Animation Builder Media Conversion Software
Page 54 Miranda Technologies Ltd
Key Polarity
Normal white is keyed image/black is transparent
Inverted black is keyed image/white is transparent (that is,
inverse of normal)
Key Source
Separate Key uses image alpha/key channel (only available if
image has key channel)
Luminance Key uses image-luma signal to generate key
No Key uses full screen of white as key (unless cropped)
Keying Mode
Full Key standard keying mode
Linear Key used to overcome problems with keyed edges
(especially when using self keying)
CGT Numbers
Clip range 0 – 1023 (default is 64) (anything below the
displayed value is transparent)
Gain range 0 – 1023 (default is 940) (anything above
the displayed value is fully keyed on)
Clip and gain values can be changed by dragging the line on the graph at the
top of the screen.
Transparency/Opacity 512 is completely opaque/0 is completely
transparent
The transparency/opacity of an image can be changed by moving/sliding the
pointer in the Opacity box.