Haunted

So... I was editing a video the other day- it's a music video for Darren Hayes' "Void" (you can see it in its finished form at youtube- http://www.youtube.com/watch?v=Oj1GZG09-4c) and I noticed something a little..strange.

This is a screen shot of the individual frames. (Keep in mind, I was home alone.) What the hell is that big black thing??? I keep telling myself it's a bug... but it doesn't look like a bug, does it? I must admit that I'm slightly creeped out. What's next? Aleisha the ghost whisperer? ...And all along, I just thought I was a paranoid schizophrenic.