Operating Your ATEM Switcher
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Upstream key luma/linear key parameters:
Mask
Enables a rectangular mask that can then be adjusted using the top, bottom, left
and right parameters.
Pre-Mult
Identifies the key signal as a pre-multiplied key.
Clip
The clip level adjusts the threshold at which the key cuts its hole. Decreasing the
clip level reveals more of the background. If the background video is completely
black then the clip value is too low.
Gain
The gain adjustment electronically modifies the angle between on and off thereby
softening the edges of the key. Adjust the gain value until the edge softness is
desirable but the background video luminance or brightness is not affected.
Inverse
Inverts the key signal.
Fly Key
Enables/disables DVE effects
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