I have a theory explaining the dearth of HD early VH live video on the entire planet earth:
Warner Bros. or the band have it in a safe deposit box to be trotted out when there is no longer a version of the band around that might not measure up to it.
It is simply not plausible that history is stuck with shaky Super8 video and dubbed audio of these performances (numbering in the hundreds) that re-wrote all the rules.