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Michael Keaton's comeback opens the Venice film festival

28 August 2014 Last updated at 13:06 BST

The 71st Venice Film Festival opened on Wednesday with the world premiere of Birdman starring Michael Keaton, Emma Stone and Edward Norton.

The dark comedy, directed by Alejandro Inarritu, is about a washed-up actor who was once famous for playing a superhero.

The film is one of 20 competing for the Golden Lion award.

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