Caption Coverage Checker
Compare speech and caption time ranges and expose missing intervals. Runs locally and returns a reviewable report.
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Input is limited to 200000 characters. Results are computed locally and exported as JSON. Up to 200,000 characters. Review the settings before running.
Your result
How to use Caption Coverage Checker
- Paste speech ranges, then a line containing three hyphens, then caption ranges.
- Run the local check.
- Review uncovered intervals and download the report.
Timing coverage
The checker compares intervals only. It does not judge caption wording, synchronization quality or speaker attribution.