The subtitles drift further out the longer it runs.

Shifting will not fix that. It comes from the video and the subtitles having different frame rates, so the times have to be stretched by a ratio. Look for entries like 23.976 ↔ 25 under “drifting further apart”.

My web player shows no subtitles.

Standard web players only take VTT. Hit “to VTT” to convert and download — the header and the time notation change together.

How do I know the shift was right?

The first and last cue times are shown side by side, before and after. Compare them with when those lines are spoken in the video.

What if I shift too far back?

Any cue that would land before 0 is pinned at 0, and you are told how many did.

Where do the subtitles get uploaded?

Nowhere. They are handled inside your browser only.

Subtitle timing

Name: 자막 시간 맞추기
Author: KarmoLab

Time shift · frame-rate drift correction · SRT↔VTT · first and last line checked · no upload

자막 시간 맞추기

어긋난 자막을 밀거나 늘려 맞춥니다. SRT·VTT 를 서로 바꿉니다

자막 파일(.srt·.vtt)을 끌어다 놓거나, 아래에 그대로 붙여 넣으세요

자막 원본

시간 밀기 0초

점점 벌어질 때

맞춘 자막

자막을 붙여 넣거나 파일을 올려 보세요.

자막 파일(SRT·VTT)을 끌어다 놓거나 눌러서 고르세요

또는 자막을 붙여 넣으세요

몇 분마다 한 칸(분)

—

자막을 넣으면 시간이 붙은 목차를 만듭니다. 이름표는 그 구간에 실제로 나온 문장입니다

Shifts subtitle timings when they run ahead of or behind the video. Drift that widens as it goes is stretched by ratio, and it converts between SRT and VTT.

How to use it

Drop a subtitle file, or paste it in
Set how much to shift
Check the first and last cue times
Download the file

Common questions

The subtitles drift further out the longer it runs.: Shifting will not fix that. It comes from the video and the subtitles having different frame rates, so the times have to be stretched by a ratio. Look for entries like 23.976 ↔ 25 under “drifting further apart”.
My web player shows no subtitles.: Standard web players only take VTT. Hit “to VTT” to convert and download — the header and the time notation change together.
How do I know the shift was right?: The first and last cue times are shown side by side, before and after. Compare them with when those lines are spoken in the video.
What if I shift too far back?: Any cue that would land before 0 is pinned at 0, and you are told how many did.
Where do the subtitles get uploaded?: Nowhere. They are handled inside your browser only.

Other tools

Stays on your device What you enter is handled inside your browser only — nothing is stored or sent anywhere.

This tool page states where what you enter goes — see the badge above. All tools · KarmoLab · Who made this · Built with AI. View source