Io IP Transport, Capture, Display v16.2r1 47 www.aja.com
• Graphic over Frame Buffer - Places a graphics file having an alpha channel
(chosen in “Graphic File” pulldown) over the current contents of the Io IP’s
Frame Buffer (which might be from storage, video In, KONA TV, etc.).
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 Io IP’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 Load
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. 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.
