Stefan Leblanc the Cinematic Director for Batman Arkham Origins explains in this behind the scenes video how they used two different actors for the opening cinematic and fight scene for the character Copperhead.
It’s interesting to see how much set design is now put into motion capture to help bring about the realism for video games. Batman Arkham Origins is available now for the PlayStation 3, Xbox 360, Nintendo Wii U and PC.
Batman Arkham Origins Dev Diary
http://www.youtube.com/watch?v=RxRbXY5xOlU