Replace IFrame http://youtube with https://www.youtube IFrame HTTP -> HTTPS bookmarklet.

replace-yt-http-2-http.js

//#JS #bookmarkelt
(function($) {
   $('iframe[src^="http://youtube"],iframe[src^="http://www.youtube"]').each(function(){ 
		var attr = $(this).attr("src");
		attr = attr.replace('http', 'https');
		$(this).attr("src", attr);
		//var a = document.createElement("a");
		//a.href = attr;
		//a.innerHTML = attr;
		//$(this).parent().get(0).appendChild(a);
   });
})(jQuery)

replace-yt-http-2-http.min.js

javascript:(function($){$('iframe[src^="http://youtube"],iframe[src^="http://www.youtube"]').each(function(){var attr=$(this).attr("src");attr=attr.replace('http','https');$(this).attr("src",attr);});})(jQuery)