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Fix Frame-Rate Subtitle Drift

Correct subtitles that slowly drift out of sync over time.

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Drop a subtitle file (or paste below)

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Positive delays the subtitles (use if they appear too early); negative advances them (if they lag the audio).

πŸ’‘ Fixes subtitles that are out of sync β€” shift everything earlier or later, and correct frame-rate mismatches with the speed factor. The format is detected and preserved. Everything runs in your browser.

frame rate tips

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If subtitles drift further off as the video plays, it's usually a frame-rate mismatch β€” use the speed factor (e.g. 23.976β†’25).

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Combine a speed factor with a small offset to nail both the drift and the start point.

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Common conversions are provided as one-click buttons.

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Nothing is uploaded.

Hoe het werkt

1
Bestand kiezen
Drop your file into the tool above. It stays entirely on your device β€” nothing is sent to any server.
2
Verwerken
The tool processes your data instantly in your browser using JavaScript. No server, no waiting.
3
Downloaden
Get your result instantly. Nothing is stored after you leave the page β€” complete privacy.

Waarom de onze?

βœ“Volledig gratis β€” geen verborgen kosten, ooit
βœ“Geen account, e-mail of aanmelding vereist
βœ“Bestanden verlaten nooit je apparaat
βœ“Absoluut geen bestandsgroottelimieten
βœ“Geen watermerken op uitvoer

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