What you can do
Shift every subtitle timestamp earlier or later.
Best for
- Positive/negative shift.
- Milliseconds or seconds.
- Preview entries.
- Complete the core workflow directly in the browser with no unnecessary account step.
Subtitle Timestamp Shifter
Shift every subtitle timestamp forward or backward by a chosen amount and prevent invalid negative timing.
Private processing
Your files never leave your device.
Processing happens privately in your browser.
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Privacy & processing
This workflow processes your own file or text on this device. AG Creator Tools does not upload private media for this local workflow.
Processing engine: Subtitle Parser/Serializer
How to use Subtitle Timestamp Shifter
- Paste SRT or VTT text.
- Enter a positive or negative shift and choose seconds/milliseconds.
- Apply the shift.
- Review and download the corrected subtitle file.
Inputs, outputs and useful limits
Input
SRT/VTT subtitles plus a timing offset.
Output
The same subtitle format with shifted cue times.
Important limits
- Times are clamped so output does not become negative.
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Common questions: Subtitle Timestamp Shifter
How do I make subtitles appear earlier?
Use a negative shift value, for example -1.5 seconds.
How do I delay subtitles?
Use a positive shift value.
What happens to cues that would become negative?
Creator Kit prevents invalid negative output by clamping times at zero.