Make a Brainrot Video With AI
Fast narration, looping background footage, huge centered captions — the highest-retention format on TikTok, assembled automatically.
A brainrot video is the fast-paced TikTok format: an AI voice races through a story or list over looping gameplay-style background footage, with bold word-by-word captions locked to the center of the frame. The format works because it saturates attention — eyes track the captions, ears track the voice, and the background motion removes any reason to scroll. ViralMint assembles the whole thing from a script: pick a voice (400+ free Edge voices, premium Gemini voices, or your own local clone), pick background footage (stock gameplay-style clips or AI-generated), and the pipeline does TTS, caption timing via Whisper, and the final render. A typical brainrot short costs cents — the voice is often the only paid step.
How to make a brainrot video with AI
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Get a script with a hook
Write or AI-generate a 60-90 second story/list script. The first line decides everything — the free viral hooks library below has 81 opening patterns that stop the scroll.
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Pick the voice and the loop
Choose a fast, energetic voice (free Edge voices work; premium voices or your clone for brand consistency) and a background loop — subway-surfer-style stock or an AI-generated loop.
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Let the pipeline assemble it
TTS renders the narration, Whisper timestamps every word, captions burn in the bold centered style, and the loop gets cut to length. Export 9:16 and post.
Example prompts to start from
From ViralMint's free prompt libraries — click any card for the full prompt and recommended settings.
Frequently asked questions
Where does the background gameplay footage come from?
Use the built-in stock search (Pexels/Pixabay have plenty of satisfying/gameplay-style loops), import your own recorded gameplay, or generate a stylized loop with the AI Video tool. ViralMint doesn't ship copyrighted game captures.
What does a brainrot video cost to make?
With free Edge TTS voices, essentially nothing — the render is local. Premium voice narration for a 90-second script runs roughly $0.10-0.25, and AI-generated background loops add ~$0.25-0.50 per clip if you want them.
Why do these captions work so well?
Word-by-word centered captions synchronize the viewer's reading pace to the narration, which measurably lifts retention on sound-off feeds. ViralMint times each word from Whisper's transcript, so the sync is frame-accurate.
Make your first brainrot video today
ViralMint is a free, open-source desktop app. No subscription — top up credits and pay cents per generation.