LG 42LS75C Owner's Manual page 113

[Video wall installation setting]
You can implement a landscape and portrait video wall using Content Rotation.
Example) Tile mode 2 x 2
* Landscape video wall
* Portrait video wall
- Set Content Rotation to 90
Rotating displays
(90 degrees)
Original
2 2
2 2
Content Rotation
(270 degrees)
2
2
Tile Mode
2
<Landscape>
2
2
15
Tile Mode
2
<Portrait>