title: How to transcode a video using python and ffmpeg library (no commandline call)
body: <p>I would like to transcode a video using python and ffmpeg. But I dont want to use a command line call like 
      call(ffmpeg -i ....")</p>
  
  <p>I will need to deploy the resulting application using py2exe, thus cannot use call method.</p>
  
  <p>Thanks in advance!</p>