Subtitle FPS Converter
Re-time subtitles for a different frame rate, for example from 23.976 to 25 fps.
Timestamps are multiplied by source FPS ÷ target FPS. Use this when the offset grows over time.
Why do subtitles drift?
Subtitles that start in sync but drift further as the film goes on were made for a different frame rate. European (PAL) releases use 25 fps, while cinema and NTSC releases use 23.976 or 24 fps. When a video is sped up or slowed down, subtitle times must scale proportionally.
The fix
The FPS Converter multiplies every timestamp by the ratio of the source and target frame rates. For example, adapt subtitles made for 23.976 fps to a 25 fps video.
Pick the right tool
If the offset is constant from start to finish, the problem isn't frame rate but a start offset; use the Subtitle Time Shifter. Processing happens in your browser.
How to use Subtitle FPS Converter
- Upload your subtitle file.
- Choose the source FPS the subtitles were made for.
- Choose your video's target FPS.
- Download the re-timed subtitles.
Why use this tool?
Solves the drifting-subtitle problem permanently in one step without uploading your file.
FAQ
How do I know I need an FPS conversion?
If the offset grows over time instead of staying constant, the frame rates differ; for a constant offset the Time Shifter is enough.
How do I find my video's FPS?
Use the Video Metadata Viewer or the Video FPS Checker.
Which conversion is most common?
Between 23.976 fps and 25 fps, the typical difference between PAL and NTSC releases.
Related tools
Subtitle Time Shifter
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Open toolVideo FPS Checker
Measure a video's frame rate (FPS) by playing a few seconds in your browser.
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