Brad Pitt is chronicling very step of Angelina Jolie's directorial debut, RadarOnline.com has learned.   The actor is on the Budapest set of Angelina's as yet-untitled love story, photographing her at work.

PHOTOS:  Brad Pitt Photographs -- and Hugs -- Angelina Jolie On Set Of Her New Movie

Angelina's movie is already controversial.  Set during the horrific Bosnian-Serbian war, it's the story of a Serb soldier who falls in love with a Muslim woman.  The Women Victims of War Association complained about some of the graphic nature of the movie, and as RadarOnline.com reported, last week her filming permits were briefly withdrawn.