title: what is the 4 char id for mpeg decoder in opencv
body: <p>I want to create a mpeg4 stream whith the following specs:</p>
  
  <p>Container mp4.mov m4v</p>
  
  <p>Resolution 1920 X 1080</p>
  
  <p>Codec h264 main profile 4.1</p>
  
  <p>I am wondering what CV_FOURCC and file extension should I use?</p>
  
  <p>Any help appreciated.</p>
  
  <p>I am using C++</p>
  
  <p>In general where can find the fourcc for any coded?</p>