Ang Lee, the director of the highly-anticipated film adaptation of the Hulk, has come clean on how he directed the action for his CGI protagonist: he did it himself.

Lee told the New York Times that he showed his crew the actions that he wanted and that eventually they shot him performing the action in a big suit.

"We went with computer graphics because he's green and he goes from nine feet to 15 feet... This had a lot of problems because he's creature-sized but a humanised character," he said, adding that he was especially concerned not to lose "continuity and reality" in the process.

"By making the movie, I guess I was like the Hulk [but] I ended up literally playing the Hulk," he said.

The Hulk is released here on Friday 18 July.