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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. Key Type Options
KEY TYPESIMILARITYBLENDTHRESHOLDCUTOFFREVERSE KEYDROP SHADOWSMOOTHING
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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