A lot of the footage comes from Man of Steel and Batman v Superman, but older films featuring both characters like Superman Returns and Batman are used as well.
The trailer repurposes footage from a bunch of different films both older and newer.
Costner’s Field of Dreams is prominent throughout a lot of it, as is 2003’s Runaway Jury and The Incredible Hulk.
The style and the old-fashioned look of the trailer mirrors a scan of retro VHS footage, with an extended four-minute look at this version of Batman v. Superman.