Performing A Graphic Transition; Sharing Dve Resources - Blackmagicdesign ATEM Production Studio 4K Installation And Operation Manual

Clip
Gain
Inverse

Sharing DVE resources

ATEM features a DVE channel which can be used to perform DVE transitions or used in an
upstream keyer. 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.
The graphic transition is a popular transition that uses the DVE and moves a graphic across the
screen over a background transition. For example, the graphic wipe moves a graphic over a
horizontal wipe, essentially replacing the wipe border. A graphic mix spins the graphic across
the screen over a mix transition. Graphic transitions are perfect for wiping the station logo or
spinning a football across the screen revealing a new background. Graphic transitions use a
special keyer built into the transition block, leaving all of the upstream and downstream keyers
available for compositing the output. The following section explains how to build and perform
graphic transitions.
The above image sequence provides an example of
the program output for a graphic wipe transition.

Performing a Graphic Transition

To perform a graphic transition on the software control panel
1 Select the DVE transition style button in the transition control block.
If the DVE is being used in an upstream key, the DVE transition style button will be
unavailable for selection until the key is taken off air and off next transition.
Refer to sharing DVE resources in this section for more information.
2 Expand the transition palette and select the DVE transition type. Use the previous or
next arrows to select a different DVE type.
3 From the graphic effects: buttons, select one of the graphic effects buttons.
4 Select the fill source and key source for the graphic from the drop down list.
5 Adjust the key parameters if required.
6 Perform the transition as an auto transition or manual transition from the transition
control block.
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.
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.
When the key is not pre-multiplied, inverts the key signal.
Operating your ATEM Switcher 132 132