I am not convinced wing chun works.

First off let me say I mean no disrespect, I am merely skeptical. I have never seen a video of wing chun live sparring, wing chun used in a street fight, or wing chun used in a match. I'd especially like to see wing chun used against a different discipline, such as boxing or a more combat proven martial art.

Edit: To those downvoting, what is wrong with me wanting to see wing chun in action? I think it's a great martial art and am thinking of studying it, but I want to see it used first.