"I think Ice Cube said this one time; I think I heard him say this one time," Em told Sway during their "RapFix Live" interview, which will stream on MTV.com on Wednesday at 4 p.m. ET. "If you can rap, if you can perform to the camera for singing and videos, it should be a pretty, fairly natural transition.
"I felt like having heard him say that was like, 'Oh, this may be fairly easy' — and it wasn't."
For Slim Shady, that wasn't the case. "It's a whole different thing, because you may be used to performing to the camera, but it's a whole different ball game when the music is off and you have lines that you need to say.
"It takes a minute to get used to."
Though there is no official word on when Eminem will return to the big screen in a starring role, the rapper has partnered up with fellow Detroit MC Royce Da 5'9" for their upcoming Bad Meets Evil EP, Hell: The Sequel.
Tune in to "RapFix Live" on Wednesday at 4 p.m. ET, when Eminem and Royce sit with Sway to talk about the making of the EP, the future of Shady Records and Eminem's rap inspiration.