YouTube Auto Caption Cleaner
Clean rolling repeats, tiny fragments, awkward line breaks, and overlapping timing in downloaded YouTube SRT, VTT, or SBV captions — right in your browser, without changing the transcript words.
Clean a YouTube auto-caption file
This tool cleans rolling structure and timing. It does not add punctuation, remove filler words, or “correct” the transcript.
Ready to review
Before
source cuesAfter
cleaned cuesMechanical cleanup can save editing time, but always proofread the final captions against your video before publishing.
How to Use Motricialy YouTube Auto Caption Cleaner
Load your caption file
Upload a downloaded YouTube SRT, VTT, or SBV file, or paste the timed caption text. The file stays on your device.
Set readable cue limits
Choose your maximum line length, merge duration, pause threshold, and target line count. If a cue cannot meet both line limits without splitting words or changing timing, the tool flags it for review.
Clean, review, and export
Remove rolling repeats, merge fragments, repair overlaps, then compare the before/after preview and download the cleaned subtitle file.
Clean the Shape of Auto Captions, Not the Words
YouTube-style rolling captions can build a line a few words at a time. When those cues are downloaded or converted, the same words can appear again in the next cue, timings can overlap, and a short sentence can turn into many tiny fragments.
This cleaner compares sequential cues, removes exact rolling overlap, groups the new words into more readable timed cues, and keeps exported timings sequential. It intentionally avoids grammar correction or AI rewriting, because changing a word without listening to the audio can introduce a new transcription error.
Key Features
Detects exact repeated word sequences across neighboring cues and keeps only the newly introduced words.
Combines tiny sequential fragments until your duration, pause, and line-capacity limits say a new cue should begin.
Adjusts cleaned cue boundaries so exported cues do not overlap, while avoiding wholesale retiming of the file.
Reads the three common timed-text formats and exports your cleaned result in the format you choose.
Shows before/after cue samples plus counts for removed repeat words and repaired overlaps before you download.
Your caption contents stay in the browser. No account, server upload, or paid API is needed for cleanup.
FAQs
What does the YouTube auto caption cleaner change?
It changes mechanical structure: repeated rolling tokens, overly fragmented cues, line wrapping, and overlapping output timing. It does not intentionally replace transcript words.
Does this download captions from a YouTube link?
No. Load a caption file you already have permission to use. The tool does not contact YouTube, scrape a video, or sign in to an account.
Will it fix spelling, punctuation, or incorrect names?
No. Those require listening to the video or using a transcription workflow. This tool deliberately avoids guessing so it cannot silently rewrite what was said.
Why do downloaded auto captions contain repeated or overlapping lines?
Rolling caption formats can progressively reveal words while older words remain visible. A downloaded or converted timed-text file can preserve that rolling structure as overlapping cues and repeated text.
Can I convert VTT or SBV to SRT while cleaning it?
Yes. Choose SRT as the output format. You can also export VTT or SBV, regardless of which supported format you loaded.
Are the repaired timings guaranteed to match speech perfectly?
No. The browser only sees cue text and timestamps, not the audio. The tool can make the exported structure sequential and easier to edit, but you should still spot-check timing against the video.