Sony DVS-9000 System User Manual page 149

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quality, but means that the part of the key fill signal which is not to be inserted

must be completely black, or it will color the background. You set the clean

mode with the Type menu of the respective keyer. (See "Setting the key type in

a menu" (page 156).)

Note that in the following situations, the clean mode goes off, and cannot be

• When the key type is a pattern key

• When key inversion is on

• When the key fill is a matte

• When the key edge is an outline

• When the key edge is normal with soft edge being on

• When fine key is on

• When the key positioner is on

A key signal based on a particular color is used to cut out the background, and

the key fill is then inserted. The inserted signal is also referred to as the

foreground, and the composite image is called a chroma key image.

For details of chroma key composition, see "Chroma Key Composition" (page

158). For details of video adjustment operations and the adjustment items, see

"Chroma Key Adjustments" (page 159).

Wipe pattern key

This uses the wipe pattern selected for a transition as the key source.

Chroma key image

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