Joss Whedon admits it'll be "difficult to maintain quality" with comic book movies going forward.

Joss Whedon

Joss Whedon

Whedon, who's helmed the much-anticipated 'The Avengers: Age of Ultron', has confessed that with so many more comic book-inspired films in the pipeline, it'll be tough to ensure the standard does not wane.

He conceded: "Honestly, it's going to be difficult to maintain quality but I don't think that schedule equals the death of movies. I think it's a new paradigm.

"To me, the [Ronald] Reagan era seemed to have heralded the death of movies. It was the end of the great, insane, introspective serious 70s movies. But I'm sure you can point to any time since the birth of cinema as the death of cinema."

Joss has already confirmed he won't return to direct another 'Avengers' film, and is looking forward to taking on a new challenge.

He told the Guardian newspaper: "The question for me is only ever: are we making good movies?

"Now you don't always hit and it's frustrating as hell that it feels to a lot of people that this is all that's going on but there are a lot of other movies being made and I believe that the non-franchise films still have a place in this world and, God willing, maybe I'll go on to do something that isn't part of seven other movies."