I'm recording a video of myself using the built-in iSight with a Macbook Pro (Early 2011) running OS X 10.8 and a Blue Yeti Stereo microphone. The audio and video are out of sync even when playing back in iMovie (before export), but the issue gets worse after export. I did some research and found this article, which suggests 1) ensuring the DV camera was set to 16-bit, 2) making sure I am running iMove 3.0.3 or later, and 3) separating the audio and video tracks. I don't know how to check for #1 with an iSight camera; I am running iMovie 9.0.7; and I tried separating the audio and video tracks, but that didn't help. What is causing this problem, and what can I do about it?