title: desktop video player with new codec
body: <p>I need to create a video player like pot player or vlc , that can play my personal codec ( like mp4 , mkv , ... ) for security reason 
  a player has a login page and the user has to sign in to play video in it 
  with out sign in the player doesn't work at all
  for example 
  I have video <code>name.mp4</code> and
  I want this video convert to something like this : 
  <code>name.xyz</code>
  this format <code>(xyz)</code> should only play in my player and only play in a person's computer who buy these videos </p>
  
  <p>I need some info on how to create this player and this player Should not crack.
  which language is perfect for this purpose? 
  I want a cross-platform app. ( support in Linux, Mac, Windows )</p>
  
  <p>Please help me. I need this app very bad</p>
  
  <p>just Need a small clue </p>