My first impression of the video below was that it looked fantastically authentic, then I read the users profile, she’s a filmmaker, bunked already, so why am I posting it? well, it’s top notch stuff, I love things that invoke an emotional reaction in me, which this did and not a lot of things on youtube do that for me.

EDIT: Reading through the comments on youtube it looks like the user isn’t really giving to much away about the authenticity of the footage, the tone leans toward it being real, so who knows.