title: Rendering Videos in iOS using Metal / OpenGL ES
body: <p>How can I render Videos  using Metal or OpenGL ES?</p>
  
  <p>I'm talking about <strong>decoding</strong> and <strong>displaying</strong> <strong>the</strong> <strong>frames</strong> by myself. </p>
  
  <p>I am very new to <code>Metal</code> and <code>OpenGL ES</code> and I don't know where to begin.</p>