Make Youtube Videos Autoplay

Youtube videos used to have a option to set autoplay on them but was removed not long after the Rick Roll videos started going around. Rather that was the reason or not I do not know but their is a way to make the video autoplay on your own.

Here is a example of what a youtube embedded video might look like.

<iframe width="560" height="349" src="VIDEO SOURCE URL" frameborder="0" allowfullscreen></iframe>

To make the video autoplay you just need to add ?autoplay=1 after the VIDEO SOURCE URL.

Example:

<iframe width="560" height="349" src="http://www.youtube.com/embed/4P0Rbe1ASuQ?autoplay=1" frameborder="0" allowfullscreen></iframe>

 Source : http://www.tweakmyblogger.com/2011/05/make-youtube-videos-autoplay.html