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Chapter 12 Keyingandcompositing 385
3 To improve the key using controls in the Viewer, use the Rene Key and Strength
controls to do any of the following:
 To identify areas of the foreground clip that might still have some of the chroma key
color showing: Click the Sample Color thumbnail image in the Video inspector and
draw a rectangle in the Viewer over the area where the chroma key color needs to
be removed.
Drag over an area where
the chroma key color is not
being removed.
To improve the key, you can drag the rectangle to adjust its position or drag its
corners to change its size, and you can drag additional rectangles over any areas
with the chroma key color still showing.
Tip: ∏ Select Matte (the center button) in the View area in the Video inspector to see the
matte that the chroma keyer is creating. This can make it much easier to see areas that
are not keying well.