Make an Audiogram With AI
A podcast moment, a moving waveform, word-perfect captions — the standard podcast promo asset, rendered free on your desktop.
An audiogram turns a podcast segment into a shareable video: cover art or a guest photo, an animated waveform proving there's audio worth hearing, and word-by-word captions carrying the actual quote — the standard promotion format for audio shows on feeds that don't play audio. ViralMint renders audiograms locally and free: Whisper transcribes the segment (free, on your machine), captions time to the word, the waveform animates against your artwork, and the export sizes to 9:16, 1:1 or 16:9. Where the AI genuinely helps beyond assembly: the viral-clip extractor listens to the whole episode and ranks the most quotable 30-90 second segments, so you promote the moment most likely to stop a scroll rather than the one you happened to remember.
How to make a audiogram with AI
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Let AI find the quotable moment
Run the episode through the clip extractor — it ranks segments by hook strength, so the audiogram features the 'wait, what?' moment, not minute 43's polite agreement.
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Add the visual identity
Cover art or guest photo as the background, waveform style and color to brand, episode title as the header. Saved as a preset, every episode's audiogram matches.
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Caption and export
Word-by-word captions carry the quote for the 80% watching muted. Export all three aspects — 1:1 for feeds, 9:16 for Reels/Shorts, 16:9 for the channel.
Example prompts to start from
From ViralMint's free prompt libraries — click any card for the full prompt and recommended settings.
Frequently asked questions
Why do audiograms work when audio doesn't autoplay?
The waveform signals 'this is a conversation' while the captions deliver its content silently — the viewer reads the hook, and the strong ones click through to the episode. It's a captions format wearing an audio costume.
Is this really free?
Transcription (local Whisper), waveform render, caption burn and export are all local — zero credits. The optional paid step is the AI clip scoring (~$0.02/candidate) that picks the best moment for you.
Video podcast — audiogram or video clip?
If you have camera footage, a captioned video clip usually outperforms an audiogram. Audiograms are the audio-only show's weapon — see the podcast-to-shorts workflow for the video-podcast path.
Make your first audiogram today
ViralMint is a free, open-source desktop app. No subscription — top up credits and pay cents per generation.