Does including GPL code in your project (movie) makes this project (movie) GPL too and requires release of all movie source code? (i.e. 3d models, scenes, screenplay, etc.) And if yes, if someone will rebuild whole movie, will it be possible to download binary version of it compiled by some Joe for free?
If the entire movie was based on the GPL'd work then the GPL could extend to the entire movie and its source assets. For example, if the code of the GPL'd work formed a central pillar of the plot of the movie (the actual code itself, not just its function or purpose because those things are not copyrightable), then the GPL could possibly extend to the entire movie. However, in movies the GPL'd work is usually just shown briefly on-screen to fill out a scene involving computer code; it does not form the basis of any part of the movie itself.
A bright line test: if the code could easily be replaced with random mumbo-jumbo psuedo code (or even jibberish) without meaningfully altering the tested work (i.e., the movie), then the GPL won't apply to the tested work.