There is a movie on my Macbook which has some some inappropriate scenes that I want to edit so I can watch the movie with my family. 

I know how to cut scenes (trim) using Quicktime but this will confuse the translation timing on the film (.srt file)

I am wondering how to make the scene freeze (fixed) while the unwanted scene is playing or better, a program that would adjust the timing of the subtitles to match scenes cut so that we didn't have to fast forward through whatever the "censored" still frames look like?