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Frame Gap Fixer

Fast. Private. Perfect.

Enforce the minimum gap between adjacent subtitles that Netflix, BBC, and Disney+ QC demands. Never fail a delivery for zero-gap intervals again.

Private & Secure
Blazing Fast
Free & Unlimited

Drag & drop your subtitle file here

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SRT, VTT, ASS, SSA, LRC, SBV, TTML, SCC, STL, SMI, TXT

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How It Works

1

Upload your subtitle file.

2

Choose the gap mode: milliseconds or frames, and set your frame rate if using frames.

3

Set the minimum gap (default 83ms, roughly 2 frames at 24fps) and minimum cue duration.

4

The fixer scans all adjacent cue pairs and shrinks any cue whose end is too close to the next start.

5

Download the QC-compliant subtitle file.

Why Choose AllSubConverter?

Your Privacy Matters

Everything runs in your browser. Your files are never uploaded.

Lightning Fast

Optimized processing engine converts files in seconds.

Truly Unlimited

No file size limits. No daily limits. Completely free.

Works Everywhere

Works on Windows, Mac, Linux, iOS, Android - any modern browser.

What the Frame Gap Fixer Does

Detects adjacent cues with gaps smaller than your target (0ms, 1ms, or a few ms).
Shrinks the earlier cue's end time to create the required gap, preserving its minimum display duration.
Set the gap by milliseconds (e.g. 80ms) or by frame count at any frame rate (23.976, 24, 25, 29.97, 30, 50, 60 fps).
Meets Netflix's strict 2-frame minimum gap requirement used in professional QC.
Configurable minimum duration so no cue is shrunk below a readable threshold.
Works with SRT, VTT, ASS, SSA, LRC, SBV, TTML, SCC, STL, and SMI formats.
Non-destructive: preview exactly which cues were adjusted before downloading.

Who Needs Frame Gap Fixing?

Streaming Platform Delivery

Netflix, Disney+, and Amazon reject subtitles where adjacent cues have zero or near-zero gaps. Fix them automatically before delivery.

Freelance Translators & QC Teams

Outsourced subtitle work must pass strict QC. Enforce the 2-frame gap rule in seconds instead of manually adjusting hundreds of cues.

Broadcast & Post-Production

Broadcast captioning requires clear separation between cues. Set the exact gap your broadcaster demands.

Frequently Asked Questions

Netflix and other streamers require at least 2 frames (roughly 80-83ms at 24fps) between adjacent subtitle cues so the viewer's eye can register the transition. Zero-gap intervals fail QC automatically.

No. You set a minimum cue duration (default 500ms). The fixer will never shrink a cue below that threshold, so readability is always preserved. If a cue cannot meet the gap without going below minimum duration, it is left unchanged.

Yes, completely free with no sign-up or limits. It runs entirely in your browser.

The gap in milliseconds equals (frame count / frame rate) x 1000. For example, 2 frames at 23.976fps = 83.4ms, and 2 frames at 25fps = 80ms. You can also set the gap directly in milliseconds.

Input: SRT, VTT, ASS, SSA, LRC, SBV, TTML, SCC, STL, SMI. Output: SRT.

Ready to convert your subtitles?

Enforce the minimum gap between adjacent subtitles that Netflix, BBC, and Disney+ QC demands. Never fail a delivery for zero-gap intervals again.