That means absolutely nothing, if the venue had a closed circuit system(which it did) there is no reason to believe the camera(s) weren't on and no one had a tape in the U-matic recording deck in the video room. In those cases the stuff would be single angle footage usually a stationary camera mounted towards the back of the venue and depending on the setup have no audio and could be black and white. The only real question would be if it was done covertly by a venue employee for their own personal use when no agreement was in place between the band/promoter/venue or done in an official capacity which in that case it would come down to who owns the rights the video. In some cases a third party company was contracted out to handle the video at a venue which was the case with The Summit in Houston at this time.