Peter Jackson could be considering adding a sixth film to his Lord of the Rings franchise. Having already divided JRR Tolkien's Rings prequel novel into two movies – The Hobbit: An Unexpected Journey, which is released on 14 December, and The Hobbit: There and Back Again, which is out next year – Jackson suggested at Comic-Con over the weekend that he may further expand the franchise.

"We have certainly been talking to the studio about some of the material we can't film, and we've been asking them so we can do a bit more filming next year,'' Jackson told HitFix when asked if he would split There and Back Again into two parts. "I don't know what would come of that, whether it'd be extended editions or whatnot. But those discussions are ongoing."

The extra material could stem from an adaptation of The Lord of the Rings Appendices, which were included at the end of The Return of the King. The chapters go into the detailed back story of Middle Earth.

"There's other parts of the story that we'd like to tell that we haven't been able to tell yet," Jackson told ComingSoon.net.