Search YouTube videos by typing text in YouTube videos, which makes locating a specific section or location of
video, by adding this extension, When you play a YouTube video, this extension adds a magnifying glass icon at the bottom of the screen. Click this icon to
open a text box, then type your search word to see a list of matches and time codes, each one takes you to a part of the video where your word is spoken.
The add-on is not completely correct, because it uses YouTube’s automated closed-caption transcripts, but in general, it works very fine.