Peter Jackson has fuelled rumours he will make a third Hobbit film.
The director had planned to release his adaptation of JRR Tolkien's book as two films, The Hobbit: An Unexpected Journey and The Hobbit: There And Back Again.
But speaking as he showed preview footage of his 3D prequel to the Lord Of The Rings trilogy at Comic-Con, Jackson revealed he plans to shoot more scenes set in the Hobbit world.
Asked about rumours of a third film he said: "We've been certainly talking to the studio about some of the material we can't film. And we've been asking them if we can do a bit more filming next year.
"Which I don't know what would come of that, whether that would be extended additions or not.
"But those discussions are ongoing. I'd like to shoot a bunch more material that we can't shoot. There's so much good stuff in the appendices that we haven't been able to squeeze into these movies. That's a discussion that we're having."
He later added: "It's very premature. I mean we have an incredible source material with the appendices because The Hobbit is obviously a novel but we also have the rights to use this 125 pages of additional notes where Tolkien expanded the world of The Hobbit published at the end of Return Of The King and we've used some of it so far.
"The discussions are pretty early. So there isn't really anything to report but there's other parts of the story that we'd like to tell that we haven't been able to tell yet."
The Hobbit Part 1 - An Unexpected Journey is due to be released in cinemas in December, with There And Back Again following in December 2013.