This isn't an official project. Let's get that out of the way first. This is, believe it or not, a trailer for a fan-made short film, put together by a (relatively) small crew and making the most of some very talented actors, effects people and martial artists/stunt performers.
This trailer, and the short it's teasing, are the end result of some promising footage we showed you back in January, when things were looking so good we thought it was an official Square Enix production. The quality of the costumes and the CG in this trailer do little to change that, even if it has nothing to do with the game's publishers.
Written and directed by Moe Charif (who also plays the lead role, Adam Jensen), you can see the full credits for the production here. It's way more people than you'd normally expect for an "amatuer" project, but as you can tell by the results above, those are the kind of numbers -- and professionals -- you need to make things look this damn good.