A common short-form layout
A second video below the main clip gives viewers something else to watch, which is why the layout is so common in short-form feeds.
Split Screen Video Maker
GPT-Video is a split screen video maker for 9:16. Put your main clip on top and gameplay or another video below, with animated captions from the main audio.
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
How do I make a split screen video?
Upload your main clip, upload a second video such as gameplay, and export. GPT-Video fits both into one 9:16 frame, with the main clip on top and the second video below, and adds captions from the main audio.
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 video gives viewers something else to watch while the main clip plays.
Do I need to provide both videos?
You provide the main clip, and the bottom half can be any second video you upload. GPT-Video handles the layout and the timing, so there is no manual resizing or masking.
Does the second video cost credits?
No. A split screen is billed on the main video only, and the second video, for example the gameplay underneath, is not counted. One credit is one minute of source video at Standard quality.
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, and it exports as a single video file.
Are captions added automatically?
Yes. The audio of your main clip is transcribed and rendered as animated captions over the video, so the story stays readable with the sound off.
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.