You can use closest('.videoWrapper')to get the common parent, then find() video. Try the following:
$(".videoCircle img").click(function() {
var video = $(this).closest('.videoWrapper').find('video')[0];
video.paused ? video.play() : video.pause();
});
Note that you need to call the HTML5 video methods ( paused, playand pausein this example) in your own element video, and not in the jQuery object, therefore [0]after the selector.