title: Can't use "showinfo=0" in YouTube embed
body: <p>I know this might be a possible repost of <a href="https://stackoverflow.com/questions/47670901/adding-showinfo-0-to-youtube-iframe-doesnt-always-work">this</a>, but since that post didn't get any replies, I'm giving it another shot. I'm trying to embed a YouTube video where I want to hide the title and the share buttons at the top. The <a href="https://developers.google.com/youtube/player_parameters#Parameters" rel="nofollow noreferrer">YouTube IFrame Player API docs</a> lists <code>showinfo</code> as a valid parameter that could be set to either <code>0</code> or <code>1</code>, where <code>0</code> hides the title and <code>1</code> shows it.</p>
  
  <p>So one would think that <code>&lt;iframe width="640" height="480" src="https://www.youtube.com/embed/v8_fEQOOMp0?showinfo=0"&gt;&lt;/iframe&gt;</code> would be possible. However, when I try this, it isn't working. The title still shows:
  <a href="https://jsfiddle.net/bf9qou8k/" rel="nofollow noreferrer">JSFiddle</a></p>
  
  <p>Other parameters like <code>controls=0</code> and <code>autoplay=1</code> are working fine. And what's interesting, the title is hidden when I try the JSFiddle above in Safari. So I'm just wondering. Does this have to do with the browser version? That some browsers ignores that parameter while others don't? I'm using <strong>Chrome 63.0.3239.132</strong>. Or is this a change that YouTube have decided on without updating the docs? Have I missed something?</p>