Released to tie in with "Tolkien Week" and the 75th anniversary of The Hobbit, the video clip features previously unseen footage from the film - which is due out later this year.
Martin Freeman stars as Bilbo Baggins in the big-screen version of the classic children's book, with Sir Ian McKellen, Andy Serkis, Hugo Weaving, Elijah Wood and Cate Blanchett all playing the same roles as in Lord Of The Rings.
Richard Armitage, Evangeline Lilly and Benedict Cumberbatch (as the dragon Smaug) are among the new additions to the cast.
The film hits cinemas on 14th December.
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