The abbreviation stands for: National television Systems Committee, and is the color TV standard in America and Japan. Usually you don't get to do this, but if you've worked with video editing software at home, you'll encounter it. Often, if you want to render the movie or burn it to DVD you have to take this standard into account (you make it for yourself, then PAL is the right standard. Is it for a friend in America or Japan then you better use the NTSC standard).