YouTube Videos – Lazy Load

I would like to include multiple YouTube videos on my homepage without using the “embed” code which slows down load time. The code below loads an image which links to the actual video which allows this feature to work well.

Here is a sample code:
<div class=”youtube” id=”4PkcfQtibmU” style=”width: 300px; height: 180px;”></div>
<script src=”https://labnol.googlecode.com/files/youtube.js&#8221; type=”text/javascript”></script>

Any chance that this could be implemented into the insert video feature?

Thanks