title: Youtube or dailymotion player api using rules
body: <p>I want to develop an app that uses videos issued from dailymotion or youtube.
  I wanted to know if there are some conditions or legal rules for using the player api of this sites.
  My main question : I want to do an application that act on the video, so the user should look and can't interact. Is it a problem if the user can't act on the video ?</p>