HTML5 video problem with www/firefox
Although HTML5 video tag works on DragonFly with sound, video and sound are
out of sync - sound is always behind of video. It's so with all videos I've
tested with (from http://www.double.co.nz/video_test/), but doesn't happen on
any platform I tried (I haven't tried FreeBSD though which is the only one
besides DragonFly using OSS backend).