The current issue of Entertainment Weekly magazine (August 15, 2014) includes a two-page spread in which 'The Giver' director Phillip Noyce and screenwriter Michael Mitnick explain how they adapted a key scene for the film. The spread includes a page from the screenplay and sample storyboards. Noyce says "Triumph of the Will" influenced our sequence from framing to editing and music.
EW also features this video, from Comic-Con, with Jeff Bridges and Lois Lowry speaking to how long it took to bring the book to the big screen.
SYFY also has a one-hour special, "From Page to Screen" in which the author and actors discuss bringing the novel to the screen.
MovieFone also has the cast and author in this video special.