ONE SMALL TASK, DONE.
Subtitle Frame Rate Fixer
Correct gradual subtitle drift caused by a frame-rate conversion.
Processed on your devicePaste text, open a file or try the sample to begin.
Your result
How to use
- Paste or open the subtitle file.
- Enter the original and target frame rates, plus any extra offset.
- Run the tool and check the ending of the video.
Good to know
Output time = input time × original FPS ÷ target FPS + offset.
Use Time Shifter for a constant delay. This tool changes the spacing and duration of every cue.
Text files up to 5 MB are supported. Downloads are encoded as UTF-8.
Your input is processed by this tool on your device. It is not uploaded to our server. Advertising uses external services. Social and coffee links open external websites.
Questions
How do I tell drift from a constant delay?
If subtitles are right at the start and increasingly late or early later on, it is drift. A constant delay is fixed with the Time Shifter.
Which frame rates are common?
25 fps (PAL) and 23.976 fps (film) are the usual pair. 29.97 and 30 fps appear in NTSC and web video.
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