title: Media source extensions: How to remove a sourcebuffer buffered range
body: <pre><code> console.log (sourceBuffer.buffered.length) //3
   sourceBuffer.remove(0); 
           //TypeError: Failed to execute 'remove' on 'SourceBuffer': required,    
           // 2 arguments but only 1 present.
  </code></pre>
  
  <p>Does <code>sourceBuffer.remove()</code> remove a buffered range or the entire sourceBuffer?</p>
  
  <p>If so what are the two expected arguments?</p>