View source for Extract part of a video with a one-line command

[http://askubuntu.com/questions/59383/extract-part-of-a-video-with-a-one-line-command Original Posting on ask Ubuntu]

Saving here for posterity and easy access:

 [http://pabut.org/wiki/html/mplayer.html mencoder] -ss 00:30:00 -endpos 00:00:05 -oac copy -ovc copy '''originalfile''' -o '''newfile'''

This says: Start at 30 seconds in and for a length of 5 seconds create '''newfile''' from '''originalfile''' in the same format as '''originalfile'''