Fix Frame-Rate Subtitle Drift
Correct subtitles that slowly drift out of sync over time.
Drop a subtitle file (or paste below)
SRT, VTT, SBV, LRC, ASS, SSA, TXT sense límit de mida de fitxer
Positive delays the subtitles (use if they appear too early); negative advances them (if they lag the audio).
💡 Fixes subtitles that are out of sync — 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
If subtitles drift further off as the video plays, it's usually a frame-rate mismatch — use the speed factor (e.g. 23.976→25).
Combine a speed factor with a small offset to nail both the drift and the start point.
Common conversions are provided as one-click buttons.
Nothing is uploaded.
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Fix Subtitles That Appear Too Early
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Fix Subtitles That Lag the Audio
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Resync SRT, VTT, or ASS Subtitles
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