Subshifter
SubShifter adjusts subtitle timing with time shifts and linear correction.
About Subshifter
SubShifter is an online tool that shifts timestamps in movie subtitle files to synchronize them with video. It addresses constant offsets, such as when subtitles and video come from different sources, and time-scale differences, such as mismatched frame rates. It currently supports the SRT file format.
Key features
- Shift all timestamps in a subtitle file
- Fix constant offset between subtitles and movie
- Apply linear correction for time-scale differences
- Process SRT subtitle files
Best for: People with SRT subtitles that are out of sync with a movie due to offset or frame-rate differences.
Good for
- Handles both fixed offsets and time-scale differences
- Supports SRT format used by most modern media players
Watch out for
- Limited to SRT file format
Subshifter at a glance
- Website
- subshifter.bitsnbites.eu
- Category
- Online Tools › Text Tools
- Type
- Website
- Pricing
- Not confirmed. Check the site
- Platforms
- Web
- Open source
- Not stated
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
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Subshifter FAQ
What subtitle format does SubShifter support?
It currently supports the SRT file format.
When can resyncing help?
When there is a slight offset from different sources, or a time-scale difference such as different frame rates.
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