AC/DC are glad to have a concert DVD because now they know what goes on during their concerts. 

 Singer Brian Johnson says he's never gotten a good look at guitarist Angus Young at the end of a show because they're usually at opposite ends of the stage.

Young says he only sees his own feet because he's bobbing his head when he plays.

Their "Live at River Plate" DVD was shot with 22 cameras, and Johnson says they got some incredible viewpoints.

 They did not consider shooting in 3-D because the cameras are too big. Besides, Johnson says no one wants to see his nose in 3-D and fans would run away if they did.

Source AP