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AI cleanup

How to use AI to correct your transcriptions

Auto-transcription gets you 95% of the way there. Let AI clean up the punctuation, casing and filler — then fix the names only you know — so your captions read like polished writing, not a raw dump. On your iPhone, three videos a day free.

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One-tap cleanup Timing stays in sync Processed on device

The short version: caption your clip in Just Captions, then run AI cleanup to fix punctuation, capitalization, number formatting and filler words automatically. Tap any line to correct a brand or person the AI couldn't know, and export burned-in captions that read cleanly. The wording gets polished; the timing stays exactly where it was.

Step by step

From raw transcript to clean captions

  1. Auto-transcribe the clipAdd your video and let Just Captions transcribe the speech on your device and time subtitles to every word.
  2. Run AI cleanupIn one pass, AI tidies punctuation, capitalization and number formatting, trims filler like "um" and "uh", and fixes obvious mishears.
  3. Check names & termsTap any line to correct a brand name, a person or industry jargon the AI couldn't know — the few details that need a human.
  4. Export polished captionsExport an MP4 with the corrected captions burned in, reading like clean writing rather than a raw transcript.
Translating afterwards? Clean the original first — a tidy transcript travels better. Then see how to translate your captions with AI.
Before & after

What AI cleanup fixes

These are the small things auto-transcription tends to get slightly wrong — and what cleanup does to each.

Issue in the raw transcriptAfter AI cleanup
Filler words"um", "uh", "you know" trimmed for a tighter read
Missing punctuationCommas, periods and question marks added
Run-on casingSentence case and proper capitalization restored
Numbers & units"twenty twenty six" → "2026", "five k" → "5K"
Obvious mishearsCommon homophones corrected from context
Line breaksLines split where they're easy to read at a glance

AI handles the patterns; you keep the final say. Anything specific to you — a brand, a name, a niche term — is a quick tap to fix.

AI cleanup does the heavy lifting

  • Fixes punctuation and casing across the whole clip
  • Trims filler so captions read tight
  • Formats numbers the way people read them
  • Keeps every line on its original timing

A quick human pass finishes it

  • Tap to fix a brand or person's name
  • Correct niche jargon the AI can't know
  • Tweak phrasing to match your voice
  • Done in seconds, not a line-by-line retype
FAQ

AI transcription cleanup, answered

What does AI cleanup fix in a transcription?
It tidies the things auto-transcription usually gets slightly off: punctuation, capitalization, number formatting, filler words like "um" and "uh", and obvious mishears — so the captions read like clean writing rather than a raw transcript.
Can I still edit captions by hand after AI cleanup?
Yes. Tap any line to fix a specific name, brand or term. AI cleanup handles the bulk, and manual edits cover the details only you know.
Does correcting the transcript change the timing?
No. Edits update the words while keeping each caption on the same moment, so your subtitles stay in sync with the speech.
Does AI cleanup upload my video?
AI cleanup sends caption text for online processing. It does not upload the video. Optional cloud speech recognition separately sends audio when enabled. Usage limits are shown in the app.
Keep going

More with Just Captions

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Localize into multiple languagesOne video, a cut for every market.Read →
Batch add captionsCaption up to 20 clips in one pass.Read →

Captions that read clean. Automatically.

Three videos a day free, no card, on-device transcription available. Let AI polish the transcript and post captions you're proud of.

Download on theApp Store

Just Captions 2.6: three videos a day free, with a watermark. Choose from 15 styles: seven static styles are free; animated styles require Pro, with one free single-video Emoji export. Pro removes the watermark. On-device transcription is available after the model download. Optional cloud recognition sends audio for processing; AI editing and translation send caption text. These online features need a connection.