To set up a Uniview camera with the corridor effect option, the first thing to do is to physically rotate the camera 90º to obtain the expected result in corridor mode at 9:16.
This would be the image of the camera in normal mode:
Then, by activating the corridor mode "90º Clockwise" and with the camera rotated 90º, the image would already change to that mode:
In order for the Uniview recorder to display the camera on the monitor and mouse with this corridor effect you have to configure the live view with this mode:
You can check if a camera has corridor effect with the filter on the Visiotech website:
And also with the Datasheet of the camera manufacturer, where you have to look for whether it has "Running Mode"