Today almost everyone need to cut or edit a video some other time. You can use ffmpeg for the same.
It is an interesting command line utility and can do a lot of stuff.
Here we will see how we can simply cut a part of a video.
What we have: foo,mp4 our video file of 10 minutes length.
We want to chop of some extra part from the end, say we just want the video from the begining till the 9th Minute.