Hey Elliott,

Thank you for your help!

It seems the .live method is deprecated as of jQuery 1.7 so I used .on() and I managed to solve the issue.

My jQuery code looks like that :

jQuery(document).ready(function($) {
	$("body").on("click", "#video-overlay", function(playVideo){
    		function autoPlayOn(el){
			el.attr('src',el.attr('src').replace('autoplay=0','autoplay=1'));
		};
		$('#my-video').show();
		autoPlayOn($('#my-video'));
		$('#video-overlay').hide();
	});
});

I definitely need to learn more about JavaScript. I guess me not really understanding the DOM was the main cause of the problem.
Thanks again and keep up the good work.