Split-screen

/splˈɪtskɹˈiːn/

Split-screen

a film technique in which two or more separate scenes are shown on the screen at the same time, often divided by a horizontal or vertical line

Examples

1. Roll the split-screen!

2. A split-screen option additionally contains a bird’s eye view of the vehicle.

3. Launching two apps in split-screen from a single button?

4. One of my fondest memories as a kid was playing GoldenEye 007 split-screen multiplayer on my little 19-inch TV.