AJA kona lhi Installation And Operation Manual page 52

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Matte Color: only available when the pulldown "Frame Buffer over Matte" or "Graphic over
Matte" are selected-pressing this button brings up a color selection dialog. The dialog
provides a variety of ways to select a matte color including a color wheel, color picker
(choose from a location anywhere on the computer screen), numeric sliders, swatches,
"crayons", and spectrums. The matte chosen will be used as a video background under
the keyed video.
Foreground pre-multiplied (checkbox): use to avoid "matte lines" and improve the
appearance of the foreground (key) being composited over the background.
Audio Out:
Frame Buffer—select audio out to be routed from the contents of the Frame Buffer.
Audio In—select audio out to be routed from KONA's currently selected input(s).
Opacity: this slider controls the transparency of the keyed video (over the background) from
translucent to completely opaque.
Graphic File: this pulldown allows you to choose from any recently accessed file or select a
new file ("Load File..."), which then brings up a file dialogue. Remember that the file raster
(pixel x pixel count) should match the primary format in the frame buffer or the
secondary format if upconverting. Example: you wish to key a logo on top of your
1920x1080 footage, the still image with alpha channel that you load should be
1920x1080.