SRT Timing Adjuster
Upload an SRT file, enter a time offset in seconds, and download the adjusted file instantly.
Drag and drop your .srt here, or click to upload
Max file size: 2 MB
Free Online SRT Timing Adjuster
Fix out-of-sync SRT subtitles with a single offset
When captions are consistently early or late by the same amount, you do not need to edit timestamps one by one. Enter the offset in seconds — positive to delay captions, negative to bring them forward — and the adjusted SRT downloads instantly.
Why Captions Go Out of Sync
SRT timing errors happen when a video is trimmed, re-encoded, or assembled from clips that did not share the same zero point as the original transcript.
A global offset — where every cue is off by the same amount — is the most common sync problem and the easiest to fix. One number corrects the whole file.
If your captions drift across the video (getting progressively more out of sync), that is a frame-rate mismatch rather than a fixed offset, and requires a different approach.
How To Adjust SRT Timing
A three-step subtitle sync workflow
Step 1
Upload your SRT file
Start with your out-of-sync .srt file. The parser reads every subtitle cue and timestamp locally in your browser.
Step 2
Enter your time offset
Type the number of seconds to shift — positive to move captions later, negative to move them earlier. Use the quick-select buttons for common values.
Step 3
Adjust and download
Click adjust and the corrected SRT downloads immediately. Every cue is shifted by exactly the offset you entered.
Step 4
Import the corrected file
Drop the adjusted SRT back into your editing software, video player, or publishing platform. No manual timestamp editing required.
Best Use Cases
When to use an SRT timing adjuster
This tool is for editors, producers, and publishers who have an existing SRT file that needs its timing corrected by a consistent amount — not rebuilt from scratch.
Fix export timing drift
Re-encoding or trimming a video often shifts the audio relative to the original SRT. A global offset corrects the whole file in seconds.
Sync captions from a different source
If you received an SRT from a transcription service that used a different zero point than your video, a single offset realigns every cue.
Correct intro timing
When you add or remove an intro from a video, captions from the original cut need a matching shift. Enter the intro duration as your offset.
FAQ
Frequently asked questions about SRT timing
CaptionX generates perfectly synced captions inside Premiere Pro
Skip the sync problem entirely. CaptionX creates captions directly on your Premiere Pro timeline — accurate, synced, and ready to deliver in 57+ languages.
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Captions are generated from your actual audio — sync is automatic from the start.
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Related Pages
More subtitle tools and resources
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