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Table Of Contents
Types of Apple ProRes Codecs
The Apple ProRes format comes in five versions: Apple ProRes 4444, Apple ProRes 422
(HQ), Apple ProRes 422, Apple ProRes 422 (LT), and Apple ProRes 422 (Proxy). The following
list describes the features of each version. For a complete comparison of the relative data
rates of the Apple ProRes codecs, see Apple ProRes Format Specifications.”
Apple ProRes 4444
The Apple ProRes 4444 codec offers the utmost possible quality for 4:4:4 sources and for
workflows involving alpha channels. It includes the following features:
Full-resolution, mastering-quality 4:4:4:4 RGBA color (an online-quality codec for editing
and finishing 4:4:4 material, such as that originating from Sony HDCAM SR or digital
cinema cameras such as RED ONE, Thomson Viper FilmStream, and Panavision Genesis
cameras). The R, G, and B channels are lightly compressed, with an emphasis on being
perceptually indistinguishable from the original material.
Lossless alpha channel with real-time playback
High-quality solution for storing and exchanging motion graphics and composites
For 4:4:4 sources, a data rate that is roughly 50 percent higher than the data rate of
Apple ProRes 422 (HQ)
Direct encoding of, and decoding to, RGB pixel formats
Support for any resolution, including SD, HD, 2K, 4K, and other resolutions
A Gamma Correction setting in the codec’s advanced compression settings pane, which
allows you to disable the 1.8 to 2.2 gamma adjustment that can occur if RGB material
at 2.2 gamma is misinterpreted as 1.8. This setting is also available with the
Apple ProRes 422 codec.
Apple ProRes 422 (HQ)
The Apple ProRes 422 (HQ) codec offers the utmost possible quality for 4:2:2 or 4:2:0
sources (without an alpha channel) and provides the following:
Target data rate of approximately 220 Mbps (1920 x 1080 at 60i)
Higher quality than Apple ProRes 422
Apple ProRes 422
The Apple ProRes 422 codec provides the following:
Target data rate of approximately 145 Mbps (1920 x 1080 at 60i)
Higher quality than Apple ProRes 422 (LT)
Apple ProRes 422 (LT)
The Apple ProRes 422 (LT) codec provides the following:
Roughly 70 percent of the data rate of Apple ProRes 422 (thus, smaller file sizes than
Apple ProRes 422)
111Chapter 10 Working with Apple ProRes