See the first footage and hear from the cast in this behind-the-scenes video. Marvel today provided a first look at Avengers: Infinity War, which started shooting in January. The video starts off by providing a brief overview of the Infinity Stones, before showing off some of the action movie's sets. Robert Downey Jr. (Iron Man), Tom Holland (Spider-Man), and Chris Pratt (Star-Lord) then share their thoughts about filming, while directors Joe and Anthony Russo discuss some of the story, which sees the Avengers taking on a new bad guy, Thanos. "Avengers: Infinity War is the culmination of the entire Marvel Cinematic Universe that started in May 2008 with Iron Man," Marvel boss Kevin Feige says. "Thanos shows us why he is the biggest, the best, the baddest villain that we've ever had. And the most frightening villain that the Avengers have ever faced." Infinity War was originally planned as two movies, but a retitling last summer meant that the second film will be something different. Although they are shooting back-to-back, the Russo brothers have stressed that they will not be two parts of the same story. Avengers: Infinity War hits theaters on May 4, 2018, while the untitled fourth Avengers movie follows on May 3, 2019. Source: Game Spot