Video & Animation 100% Local Processing Limit: 10 MB

Subtitle (SRT / VTT) Editor & Sync

Time-shift subtitle cues by milliseconds to fix out-of-sync audio and convert SRT to VTT.

Sponsor Space

1. Subtitle Source & Time Shifting

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Upload .SRT or .VTT File

2. Processed Subtitles

0 Cues
Sponsor Space

How to Use the Subtitle (SRT / VTT) Editor & Sync

  1. 1
    Upload SRT/VTT file or paste subtitle text.
  2. 2
    Enter millisecond offset (e.g. +1200ms or -500ms).
  3. 3
    Click "Shift All" and export updated .SRT or .VTT file.

Practical Example & Use Case

Common Real-World Scenario

Fixing a movie subtitle where text appears 1.5 seconds ahead of audio by applying a -1500ms time shift.

Technical Notes & Limitations

Browser Engine Architecture

Supports standard SRT and WebVTT cue syntax.

Frequently Asked Questions

What format should I use for HTML5 video?

WebVTT (.vtt) is the native standard for HTML5 elements.