User's Manual
CUT Button
When a cut transition is performed using the CUT button, any upstream keys that were selected 
in the next transition and any downstream keys that were tied to the transition control will also 
change state. For example, a downstream key tied to the transition control will cut ON if off air, 
or cut OFF if on air.Similarly, any upstream keys selected in the next transition will be cut on if 
they were off air, or cut off if they were on air.
To perform a cut transition using the CUT button on the software control panel
1  On the preview bus, select the video source that you want on the program output. 
The program output will remain unchanged.
2  In the transition control block, press the CUT button. The sources selected on the 
program and preview buses are exchanged to indicate that the video source that was 
on preview is now on program and vice versa.
The Cut transition button is part of the Transitions Style group
To perform a cut transition on the software control panel using a keyboard
1  Ensure that <caps lock> is off.
2  Press the number key on the keyboard corresponding to the video source that you 
want on the program output. The source will be selected on preview and the program 
output will remain unchanged.
3  Press <spacebar>. The sources selected on the program and preview buses are 
exchanged to indicate that the video source that was on preview is now on program 
and vice versa. 
To perform a cut transition using the CUT button on an ATEM hardware panel
1  On the preview bus, select the video source that you want on the program output. 
Theprogram output will remain unchanged.
2  In the transition control block, press the CUT button. The sources selected on the 
program and preview buses are exchanged to indicate that the video source that was 
on preview is now on program and vice versa.
It’s recommended to use the transition control block to perform transitions because it 
provides the opportunity to verify the video content on the preview output before 
sending it to the program output, for example to verify that a camera is in focus.
139Operating your ATEM Switcher










