because the only way to get decent qt (preferrably the new h264) quality is by exporting it in final cut pro, avaliable on macs only.. ive tried using quicktime pro, but i have yet not had any half-decent resuts of it.. it's weird, when looking at uncompressed dv in media player, it looks ace, but in QT it looks shoddy. if people learnt how to do it properly though, it'd be cool. people use wmv/mpg more often, because it's so much easier.. nowadays, there are plenty of divx/xvid tutorials out, so people start using that more frequently aswell.