Marvel Studios got the hype going for "Avengers: Infinity War" in a big way on Friday evening, with both a juicy new video promoting the start of production and a playful Facebook Live chat with Robert Downey Jr.

The video began in the backstage of a studio with Downey sitting in a chair taking questions. He commented on how epic "Infinity War" is going to be, even getting his very own cameraman who gives viewers a thumb's up off-screen. The cameraman happened to sound a lot like Tom Holland, who will suit up as the titular character in "Spider-Man: Homecoming."

The first question concerned what has Downey excited to be back with the Avengers? He responded that he can't give too much away, but calls "Infinity War" the "second greatest" story ever told. Next question is which Iron Man armor would he like to take home off-set? Downey answered with the Mark 42 armor from "Iron Man 3." When the question of whether Captain America and Iron Man are getting along comes up, the actor joked that Cap is on his "s-list."

Downey was then asked what has changed for Tony since the original "Iron Man?" He replied that the world around Tony is different. Characters like Peter Parker are in the mix, and the Guardians of the Galaxy are "on fire." Finally, Downey is asked what's his favorite thing about waking up to play Iron Man? He said that there is a certain amount of cred that he doesn't deserve, and he's not as cool as Tony Stark in real life.

We're then joined by "Infinity War" directors Joe and Anthony Russo. They immediately recognize the cameraman, but before they can spill the beans on his secret identity, they're asked if they could take any three Avengers on a family vacation, who would they be? After some thought, they chose Tony Stark, Peter Parker and the Vision for his ability to put up a two-man tent.

Before the Russos' make their exit, Downey demands them to address the elephant in the room: what's on a script page they're holding? The directors teased it's the final page of the "Infinity War" screenplay.

The mystery cameraman asked Downey one more question, and that is will Spider-Man be in "Infinity War?" The camera turned to reveal that it was Tom Holland all along, and yes, Spider-Man will appear in "Infinity War." But he's not the only star to join this Facebook Live, as Chris Pratt sauntered onto set. He asked if there are any questions for him, as Downey motioned for Holland to cut off the live recording.

Directed by Joe and Anthony Russo, “Avengers: Infinity War” is scheduled for release on May 4, 2018.