Filmora Video Editor for Mac
Split screen will let you play more than one video in one screen. Now the Split Screen can support up to 6 screens in Filmora Video Editor for Mac.
How to Use the Split Screen
Step 1: Click the "Split Screen" icon on the left side bar of the software and choose your favorite template from the list.
Step 2: In the prompt window, drag and drop the videos to fill in the empty part of the screen. Then you can preview the video and make some position adjustments.