Are you referring to Queen Rock Montreal?
It has the best PQ of any Queen concert since it's the only Queen video shot on 35mm film (rather than magnetic videotape), now remastered frame by frame.
The bad part about Queen Rock Montreal is the lousy camerawork. For example, Brian May delivers a guitar riff, but the camera is on the drummer. Freddie Mercury pounds the keyboards, but the camera, instead of framing both Freddie and the keyboard, only frames a tight close-up of Freddie's face.
The director of photography does not know what he's doing. I'm almost certain that he can't play any musical instrument
.
Compare:
Queen Rock Montreal 1981:
http://www.youtube.com/watch?v=NjNEJsdP3rkLive at Wembley 1986:
http://www.youtube.com/watch?v=T36Ez1pq3E8