Several videos are explanatory, talking and showing scales, fingerings and so on with graphics or screen animation.
Each video is short. That is, none of them are rambling explanations of harmony, pop culture, or history. (Those are all ok, but not here.)
Several videos are to illustrate left hand or right hand fingering techniques in action.
Typically the videos focus on content in the book, but from a different perspective or illustrated in a different manner to help you learn.
The videos are presented in 1200 x 720 video in the mp4 format.