"Editors - Add YTvideo" is a free plugin for Joomla which adds a button to the text editor with which you can embed youtube video in your articles. The plugin lets you control the built-in video options - autoplay / not working in Chrome/, a disable on user control or video information. You can adjust the width and height of the video

Read more http://feeds.joomla.org/~r/JoomlaExtensions/~3/otFBi8umMJ4/add-ytvideo