Legacy Document

Important: The information in this document is obsolete and should not be used for new development.

JPEG 2000 Support

QuickTime 6 includes support for JPEG 2000, a high-quality, still-image compression and image coding standard that uses state of the art compression techniques based on wavelet technology. QuickTime 6 provides support for encoding, decoding, import, and export to the format.

The JPEG 2000 standard is based on discrete wavelet transform (DWT), scalar quantization, context modeling, arithmetic coding and post-compression rate allocation. The standard lends itself to a variety of uses, ranging from digital photography to medical imaging to advanced digital scanning and printing.

For more information on the JPEG 2000 standard for still image coding, refer to

http://www.jpeg.org/JPEG2000.htm

Most notably, JPEG 2000 provides high compression efficiency––in many cases, visually lossless compression at 1 bit per pixel or better.

Note that for this release of QuickTime 6, JPEG 2000 is only supported in Mac OS X.

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Last updated: 2002-07-01

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