RedBall Project is a global art project by Kurt Perschke that exists as a series of temporary installations in a city over a few weeks. The work has taken place in places such as Barcelona, Taipei, Chicago, Toronto, and England among others. This film was created by the artist, who was later smart enough to get pro friends to help. So its early and rough, it literally is 'actions', or reactions.
More info on RedBall and images from each site in Sydney, and the other cities, can be found at redballproject.com