<link href="//netdna.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//netdna.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js"></script>
<script src="//code.jquery.com/jquery-1.11.1.min.js"></script>
<!------ Include the above in your HEAD tag ---------->
<!-- Reference
http://getbootstrap.com/components/#responsive-embed
NEW:
"As seen in SUIT CSS, we've added a few classes for creating responsive embeds.
They're great for proportionally scaling down YouTube videos and other iframe or embed elements"
-->
<div class="container">
<div class="row">
<h3>
Mr. M.'s YouTube/Vimeo Responsive Embeds - Bootstrap 3.2
</h3>
<p>
<a href="http://bootsnipp.com/iframe/d2DzN" target="_blank">View Full Screen </a> <i>(Req'd to test on mobile device)</i>
</p>
<hr>
</div><!--.row -->
</div><!--./container -->
<div class="container">
<div class="row row-eq-height">
<div class="col-md-4 ok">
<h4>
Examples of Responsive Embeds, NEW to Bootstrap 3.2
</h4>
<p><strong>This UPDATES my
<a href="http://bootsnipp.com/snippets/featured/responsive-youtube-player" target="_blank">previous Bootsnipp example using custom CSS</a>, for Bootstrap 3.1.0.</strong>
</p>
<p>
You don't need to include <code>frameborder="0"</code> in your <code>iframe</code>s as Bootstrap 3.2 override that for you.
</p>
</div><!--.col -->
<div class="col-md-8">
<div class="embed-responsive embed-responsive-16by9">
<iframe class="embed-responsive-item" src="//www.youtube.com/embed/zpOULjyy-n8?rel=0"></iframe>
</div>
</div><!--.col -->
</div><!--./row -->
</div><!--./container -->