Load a video later via jQuery (incl. fix for webkit)

loadvideo.htm

<video width="300" height="500" poster="poster.jpg">
    <source type="video/mp4" src="" data-src="video.mp4" />
    <source type="video/webm" src="" data-src="video.webm" />
</video>

loadvideo.js

$('source[data-src]').each(
    function(i) {
        var $this = $(this);
        
        // Webkit-Fix
        if($.browser.webkit && $this.attr('type') == "video/mp4") {
            $this.parent().attr('src', $this.data('src'));
        }
        
        $this.attr('src', $this.data('src')).removeAttr('data-src');
        $this.parent().get()[0].load();
    }
);