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Keying Controls

Every key type offers a different set of controls. If a control is unavailable, it is grayed-out. The following table summarizes the options that are available for each key type (Table 13.1).

Table 13.1. Key Type Options
KEY TYPE SIMILARITY BLEND THRESHOLD CUTOFF REVERSE KEY DROP SHADOW SMOOTHING
None       
Luminance Keys        
Luminance      
Multiply       
Screen       
Chrominance Keys        
Chroma  
Blue screen     
Green screen     
RGB difference     
Alpha Keys        
Alpha       
Black alpha matte        
White alpha matte        
Matte Keys        
Image matte       
Track matte       
Difference matte    



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