Frequently asked questions
What is a split-screen video?
A split-screen video shows two visuals in one frame at the same time — commonly a top-and-bottom or left-and-right layout. It's used for reactions, before-and-afters, side-by-side comparisons, or a green-screened person over a background. The format puts the contrast directly on screen so viewers can judge both things at a glance.
How do you make a split-screen video on your phone?
TikTok's Duet and green-screen tools build split layouts natively, and editing apps like CapCut let you stack two clips top-and-bottom or side-by-side on separate layers. Film or import both pieces, position them so neither is cut off on a vertical screen, and line up the moment they should sync.
What's the difference between split-screen and a duet?
A duet is TikTok's specific feature for reacting alongside someone else's existing video, which produces a side-by-side split automatically. Split-screen is the broader format — any layout showing two things at once, including two of your own clips, a comparison, or a green-screen over a screenshot. Every duet is a split-screen, but not every split-screen is a duet.
More ideas: video ideas by niche, all video formats, or the free hook generator.