title: How can I play a video with alpha channel (transparency)?
body: <p>Is it possible to play videos with transparency in <code>MediaElement</code> or <code>MediaPlayer</code> (C# WPF)
  with a background at the back so the background would appear in the transparent areas of the videos?</p>
  
  <p>I researched for an answer but couldn't find any, I hope you can help me.</p>