I'm looking for a way to stop YouTube from automatically loading or prefetching HTML5 videos in my browser (Chrome 43). I tried to use the Stop YouTube HTML5 Autoplay extension but It doesn't do that. I've seen similar questions in this website but they were all about how to disable HTML5 video completely. I only don't want YouTube (and if possible other websites) load HTML5 videos before I press the play button.
How to stop YouTube HTML5 video auto-loading (prefetching)
youtube;html5