The disc is a must for any Pink Floyd fan, the concert sound is exceptional.  Only one complaint, the picture will go from grainy to perfect high def each time they switch to a different camera angle.  I am not a film engineer.........but I would guess of the many cameras that were used during filming only a couple were high def.  It does not take away from the concert but it is obvious as they rotate different angles you are losing picture quality.  On the other hand, the sound quailty is so good........who cares!