Proven retention format
Split screens give restless viewers a second thing to watch, which is exactly why the format dominates short-form feeds.
Split Screen Video Maker
Stack your clip above gameplay or any second video in a vertical split — the retention format that keeps eyes on screen to the last second.
Workflow
How it works
Add your main clip
Upload the video that carries the story — a talking clip, a stream moment, a narrated story.
Choose the second half
Pair it with a bottom video, typically gameplay or other ambient footage, that fills the rest of the vertical frame.
Export the split
GPT-Video composes both into one 9:16 video with captions over the main clip, ready to publish.
Why it matters
What you get
Automatic layout
Both videos are fitted into the vertical frame for you — no manual resizing, masking or timeline juggling.
Captions on top
Animated captions generated from your main audio sit over the composition, so the story stays readable with sound off.
Works with every format
Combine it with Reddit stories, stream highlights or any clip that needs an extra retention layer.
FAQ
What is a split screen video?
A vertical video divided into two stacked halves: your main content on top and secondary footage, often gameplay, below. The second layer keeps passive viewers watching longer.
Do I need to provide both videos?
You provide the main clip; the bottom half can be any second video you upload. GPT-Video handles the layout and timing.
What aspect ratio is the result?
The composition is 9:16 vertical, with the two halves sized to fill the frame for TikTok, Reels and Shorts.
Are captions added automatically?
Yes. The audio of your main clip is transcribed and rendered as animated captions over the video.
Related
Start today
Create an account and use Split Screen Video Maker when GPT-Video opens.
Plans from $19 a month. Cancel any day, keep the month.