title: how to set the Bitrate converting mp4 and flv video to mp3 with VLC
body: <p>I run the following command in order to convert <code>flv video</code> to <code>mp3</code> by using <code>VLC</code> in command line mode:</p>
  
  <pre><code>/Applications/VLC.app/Contents/MacOS/VLC -I dummy \
  "myFile.flv" \
  --sout='#transcode{acodec=mp3,vcodec=dummy}:standard{access=file,mux=raw,dst="myFile.flv.mp3"}' \
  vlc://quit
  </code></pre>
  
  <p>The Bitrate of the mp3 file is usually too high and the files takes too space on the disk.<br>
  My question is:   how can I set the Bitrate by using VLC by command line?</p>