Grass Valley EDIUS Neo 3 - Manual (Page 612)

610 EDIUS NEO — User Reference Guide
Section 6 — Effects and Titles
Figure 726. Alpha Channel Example
The clip from which the desired portions are extracted is called the Fill. The
transparency mask that extracts images from the fill is called the Key as
illustrated in
Figure 727 .
Figure 727. Alpha Channel Key and Fill
The Alpha Channel functions are not supported when the following
parameters are different for the Key and Fill images:
• Image size
• Frame rate
• Aspect ratio
• Field order (Top or Bottom Field First and Progressive are supported -
No combination of Top Field First and Bottom Field First is supported)
• One or both clips has no defined duration.
Note The aspect ratio and field order of a clip is visible in the Information Palette.
To create an Alpha Channel composite clip, follow these steps:
1. Save the clips that will be the Fill and Key clips in the Asset Bin as
shown in
Figure 728 .
Figure 728. Fill and Key Clips in the Asset Bin