Understanding the Keying Menu

When you select a key type button (SELF KEY, AUTO SELECT, CHR KEY, or DVE), the menu system displays a number of options that allow you to adjust how a the key appears. The options that are available depend on the type of key that is selected.

The switcher supports Self, Auto Select, Chroma, and DVE keys in each ME.

Table 1. Keying Menu Items
Menu Item Description
Clip removes lower-saturated colors from the video image
Gain adjusts the transition between video image, and the parts of the video image that are removed
Transp adjusts the overall transparency of the key video
Linear sets the clip, gain, and transparency values for self keys back to the default
Invert reverses the polarity of the key alpha so that the holes in the background are cut by dark areas of the key alpha instead of bright areas
Mode overrides the shaped setting for the key
Mask selects the type of mask that is applied to the key (Masks)
M-Frce turns the force mask feature on or off (To Pattern Mask a Key)
M-Inv turns the invert mask feature on or off (To Pattern Mask a Key)
Size adjusts the size of the mask or DVE key
Pattrn selects the pattern for the pattern mask
X Pos selects the horizontal position of the mask or DVE key
Y Pos selects the vertical position of the mask or DVE key
Aspect selects the aspect ratio for the mask pattern or DVE key
Border turns the border feature on and selects the size of the border on the mask pattern or DVE key
Soft selects the amount of softness that is applied to the mask or DVE key border
Load selects the color for the border from a pre-set list
BHue adjusts the hue of the border color
BSat adjusts the saturation of the border color
BLum adjusts the luminance of the border color
Rot selects the rotation for the mask pattern
HMult multiplies the mask pattern horizontally (1-32)
VMult multiplies the mask pattern vertically (1-32)
HCrop press to toggle between HCrop, Left/R, and L/Rght
  • HCrop — adjusts the horizontal cropping of the DVE key
  • Left/R — adjusts the cropping of the left side of the DVE key
  • L/Rght — adjusts the cropping of the right side of the DVE key
VCrop adjusts the vertical cropping of the DVE key
  • Top/B — adjusts the cropping of the top of the DVE key
  • T/Bttm — adjusts the cropping of the bottom of the DVE key
Left/R press to toggle between Left/R and L/Rght
  • Left/R — adjusts the cropping of the left side of the box mask
  • L/Rght — adjusts the cropping of the right side of the box mask
Top/B press to toggle between Top/B and T/Bttm
  • Top/B — adjusts the cropping of the top of the box mask
  • T/Bttm — adjusts the cropping of the bottom of the box mask