You beat me to it Carcharias! I came across this a few months ago (I'm a big Queen fan), and I was looking through a few things the other night and saw this again as I was about to turn the computer off.
It is most definitely an Aussie jersey, but you'll notice that the Queen Australian tour logo is on the chest where the Australian Coat Of Arms sits normally.
This is much better than when 'We Will Rock You' opened in Melbourne in 2003. AFL threw them all different teams jerseys and they all posed with them. The only one who genuinely was happy in that photo was Ben Elton because he lives here in Perth (or Fremantle I think it might actually be) and goes for the team he was wearing the jersey of. At least with that 1985 clip, Brian / Queen all decided what they all wore whenever they wanted to. Brian decided to wear an adjusted Aussie jersey which is awesome!