JRand, regarding your question about film outtakes, here's the way it worked back in the day...
You would shoot a camera roll (usually 1,000 feet--about 11 minutes in 35mm) and that roll is processed in the lab. When the film was shot, the script supervisor noted which takes were good (circled takes) and those takes were printed, i.e. a work print was made which is what the editor cuts up.
The unused or bad takes stay on the developed camera roll, intact, until the film is "locked", and no other changes will be made. Once the film is finalized, the negative is cut (conformed) to match the work print that the editor cut. The work print is kind of like the blueprint, the editor is like the architect, and the negative cutter "builds the house".
After the negative is conformed, all the leftover pieces are stored until somebody decides it's not worth paying to store anymore and it ends up in a landfill, or an incinerator, or if you're lucky, preserved by someone who cares. There are whole stock footage libraries made up from outs, say, of Movietone newsreels, etc.
