SRT/VTT Cleaner
Clean subtitle text, normalize whitespace, and prepare SRT or VTT files for review.
Try it freeFree Audio Tool
Free subtitle drift fixer
Paste SRT or VTT captions and fix gradual sync drift with separate first-caption and last-caption offsets. Use it when a simple time shift is not enough.
Apply start and end offsetsFix gradual caption driftWorks with SRT and VTT timestampsCopy or download retimed subtitles
Free browser tool
Subtitle Drift Fixer
Next step
Transcribe the edited audio when you need text
Start free, upload the prepared recording, and get an AI transcript with searchable text, speaker labels, timestamps, summaries, and TXT, DOCX, PDF, SRT, or VTT exports.
Related tools
More tools for subtitle drift fixer
Continue editing or checking your file with a small set of relevant browser tools.
Subtitle Time Shifter
Shift SRT or VTT subtitle timestamps forward or backward.
Try it freeSRT/VTT Converter
Convert subtitle text between SRT, WebVTT, and plain transcript formats.
Try it freeTranscript Cleaner
Clean transcript text by removing timestamps, fillers, repeated spaces, and noisy formatting.
Try it freeSRT/VTT to Plain Text
Remove subtitle timestamps and numbering to extract readable transcript text.
Try it freeCaption FPS Converter
Convert subtitle timing between common video frame rates such as 23.976, 24, 25, 29.97, and 30 fps.
Try it freeFix subtitles that drift over time
Some captions start in sync but slowly become early or late. Drift fixing linearly retimes timestamps across the full caption file.
Better than a single offset
Use Subtitle Time Shifter for a constant offset. Use this drift fixer when the sync error changes from the beginning to the end.
How it works
How to use the Subtitle Drift Fixer
- Paste SRT or VTT captions.
- Enter the offset needed at the first caption.
- Enter the offset needed at the last caption.
- Generate the retimed subtitles.
FAQ
Subtitle Drift Fixer questions
What is subtitle drift?
Subtitle drift is when captions gradually move out of sync, often because the audio/video timing was stretched or encoded differently.
Can this fix every subtitle sync issue?
It fixes linear drift. If individual sections are edited differently, you may need manual caption editing.