AngularJs将$ http.get传递给视频源标记

I am trying to get my app controller load a fullscreen background video using $http.get and then on success subsequently pass that data into a video source tag. I figured this was the best way so that I could also pass a variable loading to a preloader div obstructing the view of the video, that will fadeout once the video is loaded using ng-show="loading".I am trying to get my app controller load a ful