Harry Potter studio releases trailer of final film

Hollywood studio Warner Bros has released a short trailer boasting the "first look behind the scenes" of "Harry Potter and the Deathly Hallows - Part 2," the final installment in the hit franchise.

The 93-second clip features soundbites from key actors, producers and director David Yates and glimpses of what its makers promise will be an action-packed finale to one of the world's most successful film series.

The first seven movies have grossed around USD$6.4 billion at the global box office, and the concluding film, due to hit theatres on July 15, is widely tipped to be the biggest picture of 2011, particularly because it is available in 3-D.

Included in the trailer is a kiss between Harry and Ginny Weasley and a showdown between the boy wizard and his nemesis Voldemort, in which the latter says: "Harry Potter -- the boy who lived come to die."

Emma Watson, who plays Hermione, said: "The scale of this one feels enormous. Your heart's going to race -- it's a really very intense ending."

Yates added: "It's a much more spectacular action picture."

The pace of Deathly Hallows - Part 1 was relatively subdued, critics said, and cast and crew have been promising a more explosive denouement.

Potter producers decided to divide the final book of author JK Rowling's bestselling, seven-part series into two movies.