What's shows you better a picture or video?

Well, My friend and I took pictures before cheerleading. I look the same as I do in the mirror, and she looked the same as I see her.
Both of the pictures, one was a mirror, other was facing, looked the same only reversed and was taken on a iPhone camera.
Then a girl took a video of me using her iPod. I looked horrible.
My face was long and my skin seemed yellow and greasy. My hair was flat and had no volume to it at all.
I'm considering the facts that maybe her angle was off on the video, and it was really close up to my face.
I was just wondering which I would base myself off of:/

Different cameras will make you look different.
I look extra skinny using my ipad mini as a camera
While I would look disproportionate using my Nikon camera and look about the same in real life as I do with my Nintendo 3DS camera. Lol it's something with the lens or whatever.