Grass Valley ProCoder 3 User Manual
Page 180
10
ProCoder 3
Configuration
Click the ... button to access the Bitmap Keying Option window.
The left image is the original image. The image at the right shows the area to be
transparent in a blue-gray color. If using the Color Key, select a color in the image
to make transparent by clicking on the left side image or by adjusting the R, G and B
sliders at the bottom and adjust the Luminance and Color tolerance sliders to achieve
the desired transparency.
If the image contains an alpha channel, enable the Alpha Channel option to use the
image’s alpha channel information to determine the transparency. Disable the Alpha
Channel option to pick a color instead of using the image’s alpha channel. Enable the
Invert Mask option to swap the transparent and opaque regions of the image.
Position
Top Left
Places the graphic at the top left of the video frame.
Top Center
Places the graphic horizontally centered at the top of the video
frame.
Top Right
Places the graphic at the top right of the video frame.
Left Places
the graphic vertically centered at the left of the video frame.
Center
Places the graphic at the center of the video frame.
Right Places
the graphic at the vertically centered at the right of the video frame.
Bottom Left Places
the graphic at the bottom left of the video frame.
Bottom Center Places
the graphic horizontally centered at the bottom of the video frame.
Bottom Right Places
the graphic at the bottom right of the video frame.