Turn Streams Into Shorts While You Sleep
Download the VOD, let AI find the hype moments, auto-reframe to vertical, caption, post. No editor on payroll.
ViralMint is a free, open-source desktop app that turns stream VODs into short-form clips: it downloads the VOD directly from Twitch (or Kick, or YouTube), transcribes it locally with Whisper, and an AI pass ranks the most clippable moments — hype spikes, story beats, rage moments — with a virality score per clip. Auto-reframe converts the 16:9 stream layout to vertical 9:16 with the action tracked, word-by-word captions burn in for sound-off viewing, and the export bundle produces TikTok, Shorts and Reels files in one click. There's no per-minute transcription pricing and no monthly clip cap — the heavy lifting runs on your machine, and only the AI scoring step uses cloud credits (cents per VOD).
The workflow
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Pull the VOD
Paste the Twitch VOD link — ViralMint downloads it at source quality on your machine. Kick and YouTube streams work the same way. Twitch downloader →
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Extract the moments
Whisper transcribes locally (free), then the AI clip picker ranks candidate moments by hook strength and emotional spike — you pick from a scored list instead of scrubbing 6 hours. Clip extractor →
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Reframe to vertical
Auto-reframe tracks the action (you + the game feed) into 9:16. Facecam-plus-gameplay layouts convert cleanly. Auto-reframe →
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Caption and ship everywhere
Burn word-by-word captions (clips get watched muted), then export 9:16 + 1:1 + 16:9 in one bundle for TikTok, Reels and Shorts.
Frequently asked questions
Does it handle 6-hour VODs?
Yes — download and transcription run locally with no duration pricing, so a long VOD costs disk space and time, not money. The AI scoring step is the only credit cost, roughly $0.02 per candidate clip evaluated.
How is this different from StreamLadder or Eklipse?
Those are cloud subscriptions with monthly clip caps; ViralMint is a free desktop app where the processing is local and you pay cents only for AI scoring. See the side-by-side comparisons for details — StreamLadder and Eklipse pages linked below.
Can my mods or editor use it too?
It's a desktop app with no seat licensing — install it on any machine. A common setup: the streamer's editor runs ViralMint, pulls each night's VOD, and has ranked clips ready before the streamer wakes up.
Free app. Prepaid credits. No seats.
ViralMint is open-source and free to install everywhere your team works — you pay cents per AI action, with pricing published per tool.