i appreciate both answers, but i don’t think i did a very good job of explaining myself. first, i am a newb to this software, not video. i already have a couple of two tb external drives. i shoot under water video, and a lot of my videos have a spectacular scene on them that lasts about 25 seconds on a two or three minute vid. the rest of the vid has nothing on it that i want to keep. so i would like to get rid of that part to save time and space. that way when i go looking for anything, i’m not wasting tons of time, instead i see quickly what i want.