<P> Avengers: Infinity War and its upcoming untitled sequel are American superhero films based on the Marvel Comics superhero team the Avengers, produced by Marvel Studios and distributed by Walt Disney Studios Motion Pictures . They are the sequels to Marvel's The Avengers (2012) and Avengers: Age of Ultron (2015), and serve as the nineteenth and twenty - second films of the Marvel Cinematic Universe (MCU), respectively . Both films are directed by Anthony and Joe Russo from screenplays by the writing team of Christopher Markus and Stephen McFeely, and feature an ensemble cast composed of many previous MCU actors . </P> <P> Development of the films began in Marvel Studios' early films by introducing the Infinity Stones and the Infinity Gauntlet . Casting began in mid-2013 with Robert Downey, Jr. signing on to reprise his role as Tony Stark / Iron Man, with the films officially announced a year later as Avengers: Infinity War--Part 1 and Avengers: Infinity War--Part 2 . The Russo brothers and Markus and McFeely joined the project in early 2015 . In July 2016, Marvel revealed that the Part 1 and Part 2 of the titles would be removed, with the former first part known simply as Avengers: Infinity War and the former second part to be renamed at a later time . </P> <P> Both films were shot back - to - back at Pinewood Atlanta Studios in Fayette County, Georgia . Production of Infinity War began on January 23, and concluded on July 14, 2017, with additional filming in Scotland, England, the Downtown Atlanta area, and New York City . Filming of the untitled sequel began on August 10, 2017 and concluded on January 11, 2018, with additional filming in the Downtown and Metro Atlanta areas . They are the first Hollywood films to be shot entirely in digital IMAX, using a new camera developed alongside Arri . Industrial Light & Magic, Framestore, Method Studios, Weta Digital, Double Negative, Cinesite, Digital Domain, Rise, Lola VFX, and Perception were some of the visual effects companies to work on the films . </P> <P> Avengers: Infinity War was released on April 27, 2018, and the untitled sequel is scheduled to be released on May 3, 2019 . </P>

When did they start filming avengers infinity war
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