Apple ProRes

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Apple ProResWhite Paper January 2020 2Apple ProResJanuary 2020ContentsIntroduction 3Authorized Apple ProRes Implementations 4Apple ProRes Family Overview 5Properties of Digital Images 8Frame Size (Full-Width Versus Partial-Width) 8Chroma Sampling 9Sample Bit Depth 10Properties of Apple ProRes Codecs 11Data Rate 12Quality 15Performance 18Alpha Channel Support in Apple ProRes 4444 Codecs 22Appendix 23Target Data Rates 23Glossary 26 3Apple ProResJanuary 2020IntroductionApple ProRes is one of the most popular codecs in professional post -production.

The role of a codec is to preserve image quality as much as possible at a particular reduced data rate, while delivering the fastest encoding and decoding speed. The Apple ProRes family supports the three key properties of digital images that contribute to image quality—frame size, chroma sampling, and sample bit depth—while offering industry-

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