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Subtitles, transcripts and media analysis
How captions, transcripts and recordings go wrong, and how to measure it. Every number comes from files we ran ourselves.
- #ocr#text extraction
Tried OCR on an old newspaper? Compare this page
One dense 1850 newspaper page, four OCR tools: one nearly right, one fluent but wrong. See the results, then run your own page.
- #subtitles#captions
Subtitles Offset or Slowly Drifting? Diagnose the Difference
Check subtitle sync at the beginning, middle, and end to distinguish a constant offset, progressive drift, or a re-edited video.
- #subtitles#captions#video
A subtitle file can look valid and still be out of sync
A subtitle file 2.5 seconds late scored the same as the in-sync one on our own check. Why a text check cannot see sync, and what the audio shows.