Captioning Methods Infographic Description

Captioning Methods:

  • Professional Transcription
  • Crowdsourcing
  • Speech Recognition

Error rates among professionally trained transcribers are less than 1%. An untrained transcriber or crowdsourced captioning could have error rates as high as 5%. Speech recognition, depending on the technology used, will have error rates from 5% to 40%.

Captions with 99 to 100% accuracy have excellent intelligibility. Captions with accuracy between 95-98% have moderate intelligibility. Captions with accuracy between 90 and 95% have poor intelligibility.  Intelligibility of captions with less than 90% accuracy is extremely poor.