The movie, titled 'The Dark Fields', is a thriller, which is being shot through the end of May and producers are looking for lots of extras from the Delaware Valley.
Parts of the city's landscape have been transformed into scenes of Manhattan, the setting for the film.
Manhattan transit signs have been put up at Septa subway sites and 18th and Market Streets has become W. 52nd and the Avenue of the Americas.
The movie stars Cooper, a would-be actor, whose skills are enhanced by a "smart drug" and De Niro, who is expected in town in a few weeks.
Action News caught up with the film's producer at Butcher and Singer restaurant.
"We shot some exteriors in Manhattan and we're shooting most of our interiors here in Philadelphia and what needed was a lot of kind of high end restaurants and bars, Philly is so great in terms of restaurants and bars there have been so many great choices," said Scott Kroopf.
Heery Casting is currently looking for affluent and well-dressed people for extras for the film.
"One of the looks we're really looking for are these very upscale, very elegant, cosmopolitan types, almost European feeling," detailed Diane Heery. "Kind of a Manhattan, kind of an artsy kind of feel."
The project will mean employment for a lot of people.
"You could end up with anywhere from 900 to 950 man-days with all the people, counting extras, principles you know just actors alone," said Jason Loftus of Heery Casting.
Agents are looking for both SAG and non-union actors, between the ages of 35 and 50.
To submit your information, CLICK HERE!
Rich Barlow is one of many actors who answered a casting call last month for the film.
"Diane had me in 4 to 6 weeks ago, and a week later, got a call back for a detective, unfortunately didn't get it."
Rich was back Tuesday for a shot at a film shoot in Pittsburgh.
The movie's release is set for March 18th, 2011.
