title: Unity video player - play a default video until another video is completly loaded
body: <p>I have a video player in Unity that loads a video from a server.
  The loading time of the video can be long, so I decided to display a "loading" video while I load the video from the server.</p>
  
  <p>I have tried to add another video player component to another object, but rendering two videos on the same texture is problematic.</p>
  
  <p>Is there a way to display a default video while the real video is being loaded by the video player component?</p>