Unfortunately for many of us, photographs separate one's appearance from one's personality entirely. In a photograph, there is absolutely nothing to distract from facial aesthetics, whereas video and direct interpersonal interaction capture conversational stimulus, vocal inflection, facial expression and body language, which may serve to draw the viewer's attention away from a deformity otherwise apparent at rest.
I distinctly remember when I fully realized this, when one of my friends (a photographer/camera whore) broke out his Nikon, and asked me why I "looked so retarded in pictures". The reality, of course, is that my aesthetic remained unchanged; there was simply nothing to distract from it.