Twitter Bootstrap Modal stop Youtube video

There is a nice proper way of doing this - see the comments in the approved answer to this post.

Couldn't get that working first time round myself though, and was in a rush, so I did a rather horrible hacky bit of code which does the trick.

This snippet 'refreshes' the src of the embed iframe, causing it to reload:

jQuery(".modal-backdrop, #myModal .close, #myModal .btn").live("click", function() {
        jQuery("#myModal iframe").attr("src", jQuery("#myModal iframe").attr("src"));
});

I know I'm 2+ years late, but since then, a couple of things have changed, with B3 the new way to perform this out of the box is this:

$("#myModal").on('hidden.bs.modal', function (e) {
    $("#myModal iframe").attr("src", $("#myModal iframe").attr("src"));
});

Have fun with Bootstrap!

If someone still has the problem, try this, it worked for me:

$(document).ready(function(){
    $('.modal').each(function(){
            var src = $(this).find('iframe').attr('src');

        $(this).on('click', function(){

            $(this).find('iframe').attr('src', '');
            $(this).find('iframe').attr('src', src);

        });
    });
});