There is a very easy way to embed YouTube video into your Joomla website using the component & plugin JEmbedAll: into an article, module or script add the code [ youtube = https://www.youtube.com/watch?v=vygQZ9hYqyE ] (without the spaces and replacing the URL with the one you want) and save it. The given example embed in this article the song Guns N' Roses - You Could Be Mine.
In the administrator section you can edit this string - you can change its name and the CSS code attached. Using the CSS code you can set the width and height of the embedded video, the position and other attributes (like the margins).
You can also use the alternate youtu.be URL: [ youtube = http://youtu.be/7XobUMTdbYg ] (without spaces) will embed the song Jetta - I'd Love To Change The World (from the Terminator Genisys) trailer.
