http://www.politube.org/show/341 There is some English dialog, but early (and at the end) what do they say? Who speaks Farsi? Compare with this: http://www.youtube.com/watch?v=eNL6DyH_IfA&feature=related Could they hear them "loud and clear" or not?
The video appears in digg.com on its front page. I don't know who to believe. But it seems the video is authentic.
I wonder if Iran fabricated any of that video? Afterall, they did say the US fabricated theirs. What makes the iranian video correct?
The US Navy did apparently. They said it was some (US) heckler in that tape know for pulling pranks. Does that answer it?