I really don't know what strange language video.mthai.com is. A customer send me link with videos which I need to download. But I can't even watch. Please try with your setup http://video.mthai.com/player.php?id=1M1335364625M0 and report back. I tried with Safari, Mobile Safari (without plugins) and Firefox (mostly privacy and adblocking plugins). In Safari the ad plays but not the video.