title: AVCaptureSession settings of Low, Medium and High, what res do they each represent?
body: <p>My app records videos, and I use settings to set the quality to record at.
  I was wondering if anybody knows what resolution they each represent?</p>
  
  <p>Low seems to be tiny and pretty worthless.</p>
  
  <p>While high seems to be really high res and file sizes of these recordings are quite high.</p>
  
  <pre><code>if (appDelegate.vidRes == 1)
  {
      NSLog(@"******   &gt;&gt;&gt;&gt;&gt; SETTING VIDEO RES TO LOW &lt;&lt;&lt;&lt;&lt;   *******");
      [session setSessionPreset: AVCaptureSessionPresetLow];
  }
  else if (appDelegate.vidRes == 2)
  {
      NSLog(@"******   &gt;&gt;&gt;&gt;&gt; SETTING VIDEO RES TO MED &lt;&lt;&lt;&lt;&lt;   *******");
      [session setSessionPreset: AVCaptureSessionPresetMedium];
  }
  else
  {
      NSLog(@"******   &gt;&gt;&gt;&gt;&gt; SETTING VIDEO RES TO HIGH &lt;&lt;&lt;&lt;&lt;   *******");
      [session setSessionPreset: AVCaptureSessionPresetHigh];
  }
  </code></pre>
  
  <p>I would like to find some nice alternatives to Low, which is too low quality. And High which is too high quality.</p>