Create and Edit Auto-Generated Captions on Your YouTube Videos

After you have uploaded a video to YouTube, you can add automatic captions using speech recognition technology. The accuracy of the captions generated varies greatly based on the sound quality of the video (i.e. voice clarity, background noise, language, and complexity of vocabulary). These captions are never 100% accurate, and it is always necessary to fix YouTube’s automatic captions.

YouTube provides documentation for editing auto-generated captions.