I'm trying to embed a YouTube video in a Text Widget and Wordpress 4.0 is stripping out the embed when rendering. For example, if I put this in the body of the widget:

```
Before
[embed]http://youtu.be/JQ_2De2cnzI&rel=0&showinfo=0&w=120[/embed]
After

```

then when I inspect the div in the browser I end up with this:

```
<div class="textwidget">Before

After</div>

```

How can I get Wordpress to keep the embed in the widget?