When you learn to dance on video, do the moves have to be done in reverse?

If the instructor in the video is facing you to teach, the movements should be done in reverse, usually there is no back to the video to teach.

If the video coach facing a mirror, and back to the video (you see the video is to see the back of the coach, look at the video mirror is to see the front of the coach), then you can follow the learning not to do the opposite.