I remember seeing VCR tape recordings of myself as an adult, taken during Christmas family gatherings. I was mortified. I looked very rigid and stiff in my movements, very "spaced out", my eyes were basically shut (downcast), and I was always making odd gestures (stimming), with my head tilted to the side. My posture was unusual, even when seated. The best way I can describe it is that I looked terrified and self-conscious. When I saw the footage with friends I tried to make excuses by saying "Oh I remember that Christmas, I was really sick. I had the flu. No wonder I look so wooden!", but my friends actually said "Um .... that's how you always look. You always move like that. You do seem rather stiff", etc. (although they said it as kindly as they could). I was very embarrassed to know this is how I'm seen by others, and not just on tape.
I've noticed that any time I see myself on a security camera I look awkward as well. I compare myself to others who are visible on the camera, and there's a huge difference. Then I try to "act" like them, then I mask, then I get more anxious, then I look like even more of a nerd.
I give up.

I avoid all videography attempts (esp. at family events) and yeah I look sallow and serious in sec camera footage. The image compels me to straighten my posture and try to hold my chin up.