Avengers: Age Of Ultron Opening Scene Featurette Released

How did they pull off that massive opening sequence in Avengers: Age of Ultron? Well, there's a featurette to let you in on some of the production secrets.

The scene itself was an epic outdoor battle scene, shot to look like it was nearly seamless in its editing and that it was filmed in more or less one shot, even though in reality it was a number of shots, including significant special effects.

You can check it out below.

"When Tony Stark tries to jumpstart a dormant peacekeeping program, things go awry and Earth's Mightiest Heroes, including Iron Man, Captain America, Thor, The Incredible Hulk, Black Widow and Hawkeye, are put to the ultimate test as the fate of the planet hangs in the balance.

As the villainous Ultron emerges, it is up to The Avengers to stop him from enacting his terrible plans, and soon uneasy alliances and unexpected action pave the way for an epic and unique global adventure."