title: YouTube IFrame API generates mixed content warning with HTTPS + HTML5
body: <p>When I embed youtube on an HTTPS page using the iframe api in HTML5 mode , it still pulls the actual stream using HTTP, which generates a mixed content warning. Is this usecase properly supported?</p>
  
  <p>I found <a href="https://groups.google.com/forum/?fromgroups=#!topic/youtube-api-gdata/ABLHg5kUUgA" rel="nofollow noreferrer">this discussion</a> from 2011 which suggests it wasn't. However I just tried accessing the CDN server using HTTPS and it works - kind of - but it returns the wrong certificate (google.com instead of something for youtube.com).</p>
  
  <p>Has anyone managed to embed a video on a HTTPS page using the IFRAME API in HTML5 without triggering a mixed content warning (ie. the lock with the yellow warning sign in Chrome)?</p>
  
  <p>Thanks</p>