Venice Film Festival: Has the Golden Lion lost its shine?

The Venice Film Festival has long been a key event in the celebrity calendar, but with fresh competition from cities like Toronto, has the race for the Golden Lion lost some of its shine?

The BBC's Will Gompertz has been speaking to some movers and shakers from the film industry to find out their views.

His report features director Darren Aronofsky, critic Mark Adams and producer Jeremy Thomas.