The following video gives you some idea of what went into putting a scene in The Avengers movie together.
Industrial Light and Magic, the visual effects studio behind the movie, released the following behind-the-scenes featurette from The Avengers.
Among some of the more interesting tidbits is the fact that Captain America had to be re-worked from a real live person into a human-digital-person for the shot to work.
While "The Avengers" posed many visual efffects challenges, one of the larger challenges was pulling together the "tie-in" shot during the third act of the film. Rather than frames, this single shot is measured in minutes on screen and is one of the longest effects shots in the film. It incorporates both practical special effects and extensive digital visual effects by ILM. The New York City environment that serves as the setting for this shot (and virtaully the entire alien invasion) is computer generated by the visual effects team at ILM.
The Avengers 2 assembles May 1, 2015 with Iron Man 3 on May 3, 2013, Thor: The Dark World on November 8, 2013, Captain America: Winter Soldier on April 4, 2014, the Guardians of the Galaxy movie on August 1, 2014 and Ant-Man on November 6, 2015..
Head on over to the Cosmic Book News The Avengers Movie Hub for more news, images and trailers.