Marvel Studios' "Guardians of the Galaxy" is now on Digital HD and Blu-ray with a host of special features -- including a new behind-the-scenes look at "Avengers: Age of Ultron" with comments from director Joss Whedon and shots of the cast, including newcomers Elizabeth Olsen as Scarlet Witch and Aaron Taylor-Johnson as Quicksilver. The official "Guardians of the Galaxy" Facebook page has released a brief, 30-second clip of the featurette -- a quick preview of the full version available on the "Guardians of the Galaxy" home video release.

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"Avengers: Age of Ultron" hits theaters May 1, 2015.