title: CVPixelBufferCreateWithBytes 's width and height parameters
body: <p>seems like the Core Video's CVPixelBufferCreateWithBytes allows width and height to be 320 and 480.</p>
  
  <p>If I try 160, and 240 the image is clicked.   </p>
  
  <p>But I really like create an image that has smaller dimension. </p>