title: Resque does not find ffmpeg
body: <p>I am using resque to queue some encoding jobs. I have workers that pick up these jobs and do some transcoding. 
  The issue is <code>system "mencoder .."</code> works fine but <code>system "ffmpeg .."</code> throws not found and the same to with <code>system "qt-faststart .."</code> 
  I installed mencoder using <code>sudo apt-get install</code>.
  ffmpeg and qt-faststart were built from source. 
  So mencoder was in /usr/bin and the other two in /usr/local/bin. 
  So, the next thing I tried was using full path in the system command, that also returned not found. 
  Then I copied ffmpeg and qt-faststart into /usr/bin.. Still got "Not Found" 
  My worker code runs standalone but when god runs it, ffmpeg and qt-fasstart fail to execute. Yes, I have god configured to watch resque. Now, I don't know what else to try! Any ideas?</p>