The advanced QuickTime architecture provides state-of-the-art multimedia technologies that enable everything from high-definition audio and video playback to the creation of immersive environments. QuickTime empowers the development of innovative software such as iTunes, iMovie and Final Cut Pro from Apple as well as thousands of cross-platform programs from third parties. Apple designed the QuickTime architecture as a powerful, extensible and flexible platform for creating digital media that maintains backwards compatibility with previous versions as new ones come to market. So files created using QuickTime 1 more than a decade ago continue to play smoothly today in QuickTime 7.4.