I only watched a few minutes but already see so many problems with this approach. She's cornering this horse - this is not teaching liberty. The horse has no choice. She's forcing herself onto her. None of that will earn the trust of the horse. She is rushing the process to get quick results, doing way too much, too fast. It may look impressive, but does more damage than good in the long run. The horse is acting submissively, but this does not create a true bond. The only part I liked is when she left the horse alone.
I would also suggest that anyone wanting to do liberty training should choose a program with a theoretical component as well as videos (ideally you work with a trainer, but I realize that for many like myself, that is not an option). The reason for this is that videos only show what is going on outwardly, but we know that horse also perceive how you feel inside. It's important to learn to project the right energy in the right way. Furthermore, different horses will react differently. You need to know what to do with an aggressive horse, a fearful horse, etc. And you need to know that before you begin working with the horse because if things do go exactly as they do in this video, you need to know how to react or you'll make things a lot worse, and potentially cause injury to yourself or to the horse.
Horses have incredible memories. They will remember every wrong move you make. This trainer may have success because she has been doing this for a while, but I would cringe to watch someone try to imitate her without decades of experience. And I wouldn't let her near my horses either. With a horse like Kodak, forcing yourself on her WILL make her submit, but she is just holding it all in. She was shut down when I got her. This led to her being completely unpredictable and explosive. It took me years to start to get her at the point where I can finally ride her without her being a nervous wreck, but it wasn't by forcing her to submit to me.
I'm not going to post a video by Karine Vandenborre, because she doesn't do "miracle training" videos. Her videos are not dramatic, they are a breakdown of each tiny step in creating a true bond with a horse. This takes time. I do not believe there are shortcuts for this. You have to put in the time.