Apple Quicktime player is used for playback of Apple's standard video format - MOV. This program is what you need to see QuickTime movies on the Internet using your browser, or locally in your file manager.
QuickTime is a multi-standard architecture used to create and distribute clips that contain graphics, sound, video, text and music in sync. More than 40,000 Web pages offer QuickTime content on the Internet. This new version allows you to view videos about things you could previously only dream of. It is used for watching movie trailers. QuickTime has gradually shaped itself into the future standard for video display, with quality far superior to MPEG and less disk space demands.
The new QuickTime Player not only delivers amazing quality, but it is easier to use than ever. There is no more need to configure the flow of content over the network. Instead, QuickTime Player automatically determines your connection speed and chooses the highest quality stream for the amount of bandwidth available. And if you ever lose a connection while watching streaming video, QuickTime Player automatically reconnects.