Hello Evgeniy,

There is no setting to add embedded video unless you are using some 3rd party extension to display video in a module or you can add the following code inside the page that you want in order to display the youtube video.

<object width="480" height="360" data="http://youtube-video-link-here" type="application/x-shockwave-flash"><param name="src" value="http://youtube-video-link-here" /></object>

Other than that I'm sorry that it is not possible