Peter Jackson had to restrain himself from "going crazy" in post-production for 'The Adventures of Tintin'.

The moviemaker acts as producer on Steven Spielberg's forthcoming movie, and while he enjoyed the freedom of working completely with CGI, he admits it was difficult to know when to stop striving for perfection with each scene.

He said: "You can go back to get angles you didn't think of on the day. It's a good thing and a bad thing.

"You try to treat it as a real movie, to keep from going crazy with difficult shots, but sometimes you can't help yourself. You have to know when to stop."

'The Adventures of Tintin' was shot in just 32 days, using a 50-person crew, and Peter admits it was an easier process to use a motion capture sound stage because shooting wasn't weather dependent.

He explained to Superhero Hype: "On a live-action set you have hundreds of people working and if it clouds over or rains, which it does from time to time in New Zealand, they're just sitting there waiting for it to stop and it's costing hundreds of thousands of dollars.

"But it's not cheaper than live action. Not at all."

'The Adventures of Tintin' is released in UK cinemas on 26 October 2011.