Previous versions of QuickTime for Macintosh have been replaced with QuickTime 3.
This powerful new product provides support for DV Camcorders, new compression for Internet delivery, an updated plug-in supporting streaming of QuickTime media including VR, a new encoding architecture for exporting both media types and compression, and the ability to read and enjoy all kinds of media from Windows based systems.
The QuickTime 3 installer also includes MoviePlayer 3, the updated plug-in, and a new application, PictureViewer to be able to open and read a variety of still images including BMP, JPEG, SGI and Photoshop.
As an component architecture, QuickTime only loads as much memory as needed for that particular function, so it is memory efficient, backwards compatible, and continues to run on older Macintosh computers as you would expect.