title: Fade out video/audio with FFMPEG
body: <p>i'm trying to simply fade out both video and audio of an input.mp4.
  The video lasts 00:29:59 (1799 sec) and i want to fade out the last sec.
  I'm using this command (it should just fadeout the video):</p>
  
  <p><code>ffmpeg -i input.mp4 -vf fade=t=out:st=1798:d=1 output.mp4</code></p>
  
  <p>but it always give me the same error:</p>
  
  <pre><code>Too many packets buffered for output stream 0:1.
  [aac @ 0000000002605b60] Qavg: 2430.591
  [aac @ 0000000002605b60] 2 frames left in the queue on closing
  </code></pre>
  
  <p>What am I doing wrong?</p>
  
  <p>EDIT: The file i was trying to edit was corrupted, with other files the filter works well :)</p>