title: ffmpeg video compression / specific file size
body: <p>Currently I have 80mb movies that I want to use ffmpeg to convert down to say about 10mb or 15mb.  I know there will be a quality loss but they will need to have sound.  Is there a way to either specify a file size or higher compression than what I have done previously</p>
  
  <pre><code>ffmpeg -i movie.mp4 -b 2255k -s 1280x720 movie.hd.ogv
  </code></pre>
  
  <p>They are currently about 25mb a piece</p>