Grass Valley EDIUS Pro v.6.5 - Manual (Page 516)

Appendix
494 EDIUS - Reference Manual
The right images are an example of blending the skydiving image as video A (background) and the image of the
airplane flying above a lake as video B (foreground).
Original images
[Overlay]
0
The blending creates a darker area where the background is dark due to a multiplying effect, and a brighter area where
the background is light due to a screening effect.
[Screen]
0
Since the pixels are negated, multiplied then negated again, the image becomes brighter.
Video B
(foreground)
Key application side
Video A
(background)