ORIGINAL TEST FILES · REPRODUCIBLE EXAMPLE

See how fixing SRT overlap and reading speed changes a real QA report.

This hands-on case walks through two small subtitle files: a deliberately flawed draft and a manually edited revision. Run the exact same browser-only checker on both and compare what it flags. Both files were created for this tutorial; they are not customer files or a claim of universal subtitle compliance.

COMPARE BOTH SAMPLES ↗

01 / VERIFY THE RESULT YOURSELF

Before vs. after, computed by the live QA engine.

The before file contains a brief first caption, a second cue that overlaps it by 0.05 seconds, and text that is too dense for its display time. The edited file separates the timing and shortens the text. No AI rewrite is performed by this page; the edit is an example of what a human subtitle editor might do.

Run the sample comparison to see results from the same checker used by the free QA tool.

BEFORE · Deliberately flawed

00:00:01,000 → 00:00:01,300
In this lesson, we will cover three important editing steps.

00:00:01,250 → 00:00:03,250
First, get clean subtitles before exporting them.

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Flagged cues out of —

Select “Run both checks” to inspect the file.

AFTER · Manually edited draft

00:00:01,000 → 00:00:04,200
We will cover three editing steps.

00:00:04,400 → 00:00:07,500
First, get clean subtitles.

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Flagged cues out of —

The revision can be examined with exactly the same rules.

Want to inspect each line yourself? Download the two .srt files and upload them to the free subtitle QA checker. You can also export per-cue findings to CSV and choose 17, 20, or 25 characters-per-second thresholds.

02 / HOW THE FIX WORKS

Three adjustments worth checking before delivery.

1. Allow readable display time

In the draft, the first cue lasts just 0.30 seconds. That triggers the checker’s “very brief” rule (under 0.7 seconds). The revised cue gets 3.2 seconds. Compare timing against the speaker rather than blindly stretching captions.

2. Remove unintended overlaps

The second cue starts at 1.25 seconds, before the previous cue ends at 1.30. The revision moves the second cue to 4.40 seconds, leaving a gap. Simultaneous on-screen captions may sometimes be intentional; review in context.

3. Rewrite dense text

The long first and second lines force rapid reading. The revision shortens their wording. Do not silently change what a speaker said when accuracy is mandatory; shorten only when your editorial requirements permit it.

03 / REAL LIMITATIONS

A clean automated report is not a passed broadcast review.

Heuristics, not certification. The default QA checker flags over 20 characters/second, display time shorter than 0.7 seconds, longer than 9 seconds, and other simple rules. Different platforms and languages need different thresholds.
Text-only cannot validate speech. The checker does not play video, verify speech accuracy, infer safe line breaks or determine accessibility conformance. Always watch the original recording.
Both files are synthetic examples. They demonstrate a reproducible process, not a measured industry success rate, customer testimonial or guaranteed result.
Privacy: The sample files are public assets. When you use the free QA checker with your own SRT, your subtitle text is processed in the browser and not uploaded as file content.

Review a whole course or video series?

For occasional subtitles, the free checker may be enough. If you repeatedly deliver many caption files, Batch Studio Pro combines up to 200 files, per-file QA CSV reports and a batch-wide summary in one offline workflow. The product is built, but payment is not active until merchant verification and delivery testing finish. The planned one-time price is $12.

SEE THE OFFLINE BATCH WORKFLOW → CHECK YOUR OWN FILE FREE →

Have a real-world example of a difficult subtitle issue (without sharing private files)? Tell us what the checker misses.