In live production, the VT[3]™ keyer can easily key capture
clips or live video over stills, video or secondary camera angles
as a real-time process. Quickly set up Luminance keys, to erase
backgrounds, or, for ultimate control, use the Chroma keyer to eliminate
blue or green screen backgrounds. VT[3]™ provides a key choke
control to simplify eliminating problematic key edges.
Chroma Keying