Grass Valley 1200 Operation Manual - Manual (Page 172)

4-10
Section 4— Basic Operations
7. Set (Gain) fully on (CW) and watch the preview monitor as
you adjust (Clip) to create the key. Then reduce (Gain) until
the key edge looks good. Also, if you want to adjust the
opacity of the key layer, adjust
(Key Opacity) .
8. To mask parts of the key that you don’t want to see, select
Keyer
[Mask] and select a wipe pattern to serve as the mask
source. Use the Pattern modifiers (on the panel and in the
Wipe menus) to adjust the mask characteristics as desired.
9. To put a border on the key, select a Borderline key edge mode:
[Border] , [Shadow] , [Extrude] , or [Outline] . To position
the edge, hold down the edge mode button and use the
joystick. To set the edge color, use the Matte controls. To clear
a border mode to its default position and color, hold the edge
mode button down and press
[Clear] . To turn off the border
modes, creating an unbordered key, select [Normal] edge
mode.
10. Transition the key on air as explained on the next page.
Figure 4-4. Luminance/Linear Key
GVG
News
GVG
News
Key Source
Fill Video
Background with Key and Fill Inserted