http://www.apple.com/quicktime/
Welcome to QuickTime 6.5, featuring 3GPP and 3GPP2, worldwide standards for the creation, delivery, and playback of multimedia over new, high-speed wireless networks. Built on MPEG-4 and powered by QuickTime, 3GPP and 3GPP2 extend the reach of rich multimedia to a new generation of handheld wireless devices. As the first widely distributed, freely available multimedia technology to deliver both 3GPP and 3GPP2 capabilities, QuickTime enables users all over the world to share 3G content with others via both computers and mobile devices.
use the updater of apple or download from here
http://www.apple.com/quicktime/download/standalone/
QT 6.5
What's New