If you're using YouTube videos on your site you've no doubt noticed by now that YouTube videos aren't displaying reliably on your site when using the URL icon from the WYSIWYG bar or the External Media block. Here's an update on what's going on and suggestions for how to work around this super annoying issue.
The External Media block will provide you with a way to embed media--video and sound clips--into your site via an external URL from the location where your media is hosted. Hosting location examples include YouTube and Vimeo. Once the block is created, it can be used once or multiple times in various locations throughout your site and will allow visitors to play the media in-screen.