Created by Freddie Wong, this overly realistic Battlefield 4 video is a fake trailer based on the Battlefield franchise. Although this is an unofficial release, it should be noted that Wong has co-directed and acted in a TV commercial for Battlefield 3 for Electronic Arts. Fanmade projects like these are always great and you should definitely watch the behind the scenes features as it provides a better perspective of how the talented people involved in this independent project were able to do something so professional.
Battlefield 4 Trailer
Battlefield 4 Trailer: Behind the Scenes