preview output of the ME shows the processed alpha
of the selected key until the button is released.
• Select the keyer that you want to show the alpha for
and double-press the SHOW ALPHA button. The
preview output of the ME shows the processed alpha
of the selected key until the button is pressed again.
• Select the keyer that you want to show the alpha for
and press NEXT > NEXT and use the ShowAl to
turn the show alpha on (On) or off (Off). The preview
output of the ME shows the processed alpha of the
selected key until Off is selected.
Masks
A Mask is a technique in which a pattern is combined
with the key source to block out unwanted portions of
the key source.
Two types of masks are available, Box masks and Pattern
masks. All key types can be masked.
• Box Mask — uses a simple box shape to mask out a
portion of the key
• Pattern Mask — uses a pattern from the pattern
generator to mask out a portion of the key
To Pattern Mask a Key
Pattern masks can be adjusted for size, location, rotation,
and multiplication.
1.
Select the keyer that you want to set up a mask for.
Click Navigation Menu > Live Assist > ME and
select the ME and key that you want to set up.
2.
Press NEXT. Depending on the key type and features
set up for the key, you must press NEXT multiple
times to get to the next step. Click Mask > Pattern.
3.
Use the Mask knob to select Pattrn.
4.
Press Edit Params.
5.
Use the M-Frce knob to force the area inside the
mask region to the foreground (On). Click Mask
Force to force the area inside the mask region to
the foreground.
Force mask is not available for all key types.
6.
Use the M-Inv knob to invert the masked area with
the unmasked area (On). Click Mask Invert to
invert the masked area with the unmasked area.
The portion of the key that was masked out is now
visible, and the portion that was visible is masked.
7.
Press NEXT.
8.
Use the Size knob to adjust the size of the mask
region. You can also twist the positioner. Use the
Size slider to adjust the size of the mask region.
9.
Press NEXT.
10.
Use the Pattrn knob to select the mask pattern you
want to use. You can also select the pattern by
pressing the pattern button directly. In the Mask
Modifications area, click the pattern that you want
to use for the mask.
11.
Use the X Pos and Y Pos knobs to position the
mask. You can also use the positioner. Use the
X-Position and Y-Position sliders, or drag the
Position cross-hair, to position the mask.
12.
Press NEXT.
13.
Use the Aspect knob to adjust the aspect ratio of
the mask. Use the Aspect slider to adjust the aspect
ratio of the mask.
Not all patterns can be adjusted.
14.
Use the Border and Soft knobs to apply a border
to the mask. Use the Size and Softness sliders to
apply a border to the mask.
Refer to the section To Apply a Border to a Pattern
on page 29 for information on borders.
15.
Press NEXT. If a border is applied to the pattern,
you must press NEXT multiple times to get to the
next step.
16.
Use the Rot knob to rotate the pattern. Use the
Rotation slider to rotate the pattern.
Not all patterns can be rotated.
17.
Use the HMult knob to multiply the pattern
horizontally. Use the HMultiply slider to multiply
the pattern horizontally.
18.
Use the VMult knob to multiply the pattern
vertically. Use the VMultiply slider to multiply the
pattern vertically.
To Box Mask a Key
Box masks can be adjusted for size, location, rotation,
and multiplication.
1.
Select the keyer that you want to set up a mask for.
Click Navigation Menu > Live Assist > ME and
select the ME and key that you want to set up.
2.
Press NEXT. Depending on the key type and features
set up for the key, you must press NEXT multiple
times to get to the next step. Click Mask > Pattern.
3.
Use the Mask knob to select Box. Click Box.
4.
Use the M-Frce knob to force the area inside the
mask region to the foreground (On). Click Mask
Force to force the area inside the mask region to
the foreground.
Force mask is not available for all key types.
44 • Keying — Carbonite Operation Manual (v13.0)
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