title: Acquiring (m:s) duration of a (mp4/flv) video using PHP?
body: <p>Any ideas how this can be done? I use flv &amp; mp4 video, so both options are welcome.</p>
  
  <p>I had an idea to calculate bitrate per second against file size of a video what is my last option but hope there is better solution.</p>
  
  <p>Thx.</p>