Operating your ATEM Switcher
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DVE transition parameters
DVE Rate
The duration of the DVE transition in seconds and frames. Rotate the DVE rate
knob to adjust the DVE transition rate. The new rate is immediately displayed in
the transition rate window in the transition control block.
Normal
The normal direction applies the DVE effect on program, revealing the preview
channel.
Reverse
Reverse changes the direction so that the DVE effect is applied on the preview
channel. In the case of reverse, program is covered by a DVE effect with the
preview video.
FlipFlop
When FlipFlop mode is toggled on, the transition changes between normal and
reverse every time the transition is executed.
DVE key parameters
Enable
Enables/disables the DVE key. The DVE key is enabled when the button is
illuminated.
PreMult
Selects the DVE key 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 (brightness) is not
affected.
Inverse
When the key is not pre-multiplied, inverts the key signal.
Sharing DVE resources
ATEM features a DVE channel which can be used to perform DVE transitions or used in an upstream keyer.
The ATEM Television Studio and Production Studio 4K do not have any DVE channels available. When
you select a DVE transition, if the DVE is used elsewhere in the system, the DVE transition type will not be
available and, on the broadcast panel, a DVE unavailable message will be displayed. In order to use the DVE
transition you must free the DVE from where it is currently used. Verify that the upstream keys currently on
program or preview are not DVE keys and do not have fly key enabled. To free DVE from the upstream keyer,
change the key type to anything other than DVE or disable fly key. The DVE will be released and therefore
available for use as a DVE transition.