cutting room
Noun
Meaning
a room where films or tapes are edited (by cutting out unwanted parts)
Source: WordNetHypernyms
Examples
The cutting room is where you discover the optimal length of the movie.
I lose tons of stuff on the cutting room floor. For Scary Movie 3, for example, we had a lot of Matrix spoofs, a Hulk scene, and some of that stuff just doesn't hold up - it's too much plot, audiences just didn't want to hear about it.
I thought it was a wonderful line - right on the cutting room floor.
All too often in tough economic times, it is the environment that gets left on the cutting room floors of Congress as everyone scraps for limited federal dollars.
Any film I've made, I've only really begun to understand in the cutting room. That's when the story shows itself to you, like a wreck coming out of the sea.