title: playing a specific interval of a video in mplayer using command line option
body: <p>I am using mplayer to play videos... I wanted to know if there are command line options to play a specific interval of a video in mplayer?
  For example, if I want to play a video file from 56 secs for a duration of 3 secs, then what would the command line options be?
  I know about the -ss option that will seek to a specific position, but how do I specify the duration that I want to play?
  Concretely, if I want a command that plays a video file starting at the beginning of the 56th second and plays 3 seconds of the video (i.e., until the beginning of the 59th sec, or equivalently, the end of the 58th sec.), what would the command look like?</p>
  
  <p>I have been looking at the man page, but no success as yet. Maybe I am missing something.
  I really appreciate your help!</p>