Yes, it counts Chrome as supporting H.264. Only IE9 and above support <video>, so the share of IE8 and older doesn't count as H.264 share. Firefox 9 has a larg

Yes, it counts Chrome as supporting H.264. Only IE9 and above support <video>, so the share of IE8 and older doesn't count as H.264 share. Firefox 9 has a larger usage share than IE9. (I included the script so that people could read it to see what was counted instead of speculating...)