title: Is it possible to use CamcorderProfile without audio source?
body: <p>My code:</p>
  
  <pre><code>mediaRecorder = new MediaRecorder();
  mediaRecorder.setCamera(camera);
  
  mediaRecorder.setVideoSource(MediaRecorder.VideoSource.DEFAULT);
  mediaRecorder.setAudioSource(MediaRecorder.AudioSource.DEFAULT);
  
  CamcorderProfile profile = CamcorderProfile.get(QUALITY_LOW);
  mediaRecorder.setProfile(profile);
  </code></pre>
  
  <p>It works.
  But I need to record only video.</p>
  
  <p>And if I don't use mediaRecorder.setAudioSource(), mediaRecorder.setProfile() fails with IllegalStateException.</p>
  
  <p>Any idea?</p>