Magnimage LED-570EV User Manual page 52

Output window and video crop parameter setting：
Output window
Dual image
Video crop
Aspect Ratio
Wight
Height
H Start
V Start
Dual image
Wight
Height
H Start
V Start
Source Input
Image1 Video crop
Image2 Video crop
Wight
Height
H Start
V Start
Custom
1920
1080
0
0
On
1920
1080
1920
0
DP
Off
On
1920
1080
1920
0
50