File tools / Fix subtitle timing

⏲️ Fix subtitle timing

Moves all subtitles earlier or later when they are out of sync. Can also fit a version played at a different speed

Open Shift subtitles

No sign-up · free for files up to 30MB

How to do it

Open OmniDesk with the button below and drop your file in.

Pick options if you need them: Shift by, Speed ratio.

Press start and download the result when it is done. It is also kept in your drive.

Accepted formats (6)

SRT VTT ASS SMI SUB LRC

Options

Shift by (s) — negative values like -2.5 work too
Speed ratio — e.g. 23.976/25 = 0.959

What you can do for free

Without an account: files up to 30MB, 10 jobs a day. Everything is deleted after 24 hours.
Free account: files up to 80MB, 40 jobs a month, kept for 7 days.
Larger files are handled on the Pro plan (up to 2GB per file). Pricing

How your files are handled

Your files are used only for this job and never to train AI. All traffic is encrypted, guest files are deleted after 24 hours, and members can delete their files at any time. Security

Frequently asked questions

Can I do it online, in the browser?

Yes. It opens straight from omnidesk.win and runs in Chrome, Edge, Safari or Firefox — nothing to install.

Which files can I use?

6 formats are accepted, including SRT, VTT, ASS, SMI, SUB, LRC. If yours is different, convert it first with the converter.

How long are results kept?

24 hours without an account and 7 days on a free account, in your drive. After that they are deleted automatically.

Related conversions

SRT→VTT SRT→ASS SRT→TXT VTT→SRT VTT→ASS VTT→TXT ASS→SRT ASS→VTT ASS→TXT SUB→SRT