title: Xamarin Forms Webview not playing video
body: <p>I have a webview declared in Xamarin Forms Xaml.  Whether I set the source in code behind or in Xaml, the video control renders fine, but when you click the play icon it does not play.  I can skip ahead and back by tapping the bottom seek bar that renders.  The video will skip ahead and freeze on a frame, but still wont play when tapping play.  I'm setting the source of the webview to an html5 video tag as its the closest I could get to getting a video to render.  I should mention that the video is formatted for streaming using Azure Media Services, so that shouldn't be the issue.</p>
  
  <pre><code>&lt;WebView IsVisible="{Binding HasVideo}" Margin="10,0,0,0" BindingContextChanged="WebView_BindingContextChanged"  HorizontalOptions="CenterAndExpand"
       VerticalOptions="CenterAndExpand" HeightRequest="350"  /&gt;
  
  private void WebView_BindingContextChanged(object sender, EventArgs e)
  {
      var webView = ((WebView)sender);
  
      Post post = (Post)webView.BindingContext;
      if (post.HasVideo)
      {             
          var htmlSource = new HtmlWebViewSource();
          htmlSource.Html = @"&lt;!DOCTYPE html&gt;
                              &lt;html&gt;
                              &lt;body&gt;
                                  &lt;video  src='" + post.MainVideoURL + @"' controls width='320' height='240' preload='metadata'   &gt;
                              &lt;/ body &gt;
                              &lt;/html&gt;&lt;style&gt;
                              video {
                                  object-fit: fill;
                              }
                              &lt;/style&gt;";
          webView.Source = htmlSource;
          }          
      }
  </code></pre>