YouTube captions

YouTube Subtitle Checker: Fix Automatic Caption Problems

YouTube's automatic captions are a useful starting point, but they are a speech-to-text draft, not a finished subtitle track. A quick review against reading-speed and line-length limits turns a rough auto-caption into something viewers can actually follow.

The problems that show up most

Auto-captions tend to mis-punctuate, misattribute who is speaking, run captions faster than a viewer can read, and let timing drift from the audio. The reading-speed and line-length issues are mechanical and can be caught automatically; the attribution and punctuation issues need a human pass.

What to check before you publish

Download the caption track and check three things: that no cue exceeds the 20 CPS / 42-character defaults, that timing matches the audio, and that punctuation and speaker changes are correct. YouTube itself does not publish a CPS limit, so these defaults are the industry's sensible target.

Run the file through a checker

Paste the downloaded SRT or VTT into the subtitle reading speed checker and it reports every cue's CPS, line length and timing. Fix the flagged cues in the editor, re-upload, and the caption is done. Work through the full subtitle QC checklist if the video is a formal deliverable.