Why can't portraits be made from videos instead of long sessions of models posing hours & hours on end.

Why can't portraits be made from videos instead of long sessions of models posing hours & hours on end?

I am a big big admirer of Lucien Freud's work and I just want to suggest why can't things be painted from a video image instead of a real life model. You don't need to put models through so many hours of torture whilst trying to maintain the same position for hours on end. Surely by freeze framing an image of a video and slowly frame by frame you can capture their personality.

Lucien Freud explains: "I was visually aggressive. I would sit very close and stare. It could be uncomfortable for both of us. I was afraid that if I didn't pay very strict attention to every one of the things that attracted my eye the whole painting would fall apart. I was learning to see and I didn't want to be lazy about it. I sometimes looked so hard at a subject that they would undergo an involuntary magnification".

Once again I think that an artiste can capture the personality of a person in a video where they are being completely natural, when they have forgotten the camera is following them.

Lucien Freud says: "Portrait painting has to do with people; how they are, what they look like, the character of their presence in the room with you. You have to trust what you see and what you feel. I never put anything into a picture that I don't actually see when I'm painting a subject. However, I'm not trying to make a copy of the person. I'm trying to relay something of who they are as a physical and emotional presence. I want the paint to work as flesh does. If you don't over-direct your models and you focus on their physical presence, interesting things often happen. You find that you capture something about them that neither of you knew."

With Sam says enjoy life!, that is what I want artistes to do. To capture Sam's personality and promote her joyful personality through different artiste visions. The different things that they capture of Sam through images of her in her videos.
Laia Ferran who is one of the Sam says artistes, says  that she got inspired by a particular video of Sam playing with Lulu by the swimming pool. Sam had her shoes untied.( Laia starts talking around minute 1.14):
http://www.youtube.com/watch?v=DCxT0I32Heg&feature=related

Lucien Freud painted his daughter Rose in the nude and said: "Painting my daughter was a way of being with her. She chose to sit in the nude and she found a pose that allowed her to relax. She was always in this state of just waking up. When I become immersed in the process of painting someone. I can lose their relationship to me and just see them as beings, as animals.  I'm interested in them as animals in the natural sense, if you know what I mean".


I think that the images below of Sam posing as if she was 1920's pornographic postcard would make amazing portraits