Originally produced as a motion picture in 2011. Bonus features: Commentary by director Kenneth Branagh; 4 deleted scenes with optional commentary; "Road to the Avengers" featurette. MPAA rating: PG-13; for sequences of intense sci-fi action and violence. Board of Film Censors, Singapore: PG (Some violence) Director of photography, Haris Zambarloukos ; editor, Paul Rubell ; music by Patrick Doyle ; production designer, Bo Welch ; costume designer, Alexandra Byrne ; visual effects supervisor, Wesley Sewell ; story by J. Michael Straczynsky and Mark Protosevich. Chris Hemsworth, Natalie Portman, Tom Hiddleston, Stellan Skarsgård, Kat Dennings, Clark Gregg, Colm Feore, Ray Stevenson, Idris Elba, Jaimie Alexander, Tadanobu Asano, Joshua Dallas, Rene Russo, Anthony Hopkins. In English, dubbed Spanish or dubbed French, with optional subtitles in English, French or Spanish; closed-captioned; Descriptive audio in English for the visually impaired.