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 ProRes family of video codecs has made it both possible and affordable to edit full-frame, 10-bit, 4:2:2 and 4:4:4:4 high-definition (HD), 2K, 4K, 5K, and larger video sources with multistream performance in Final Cut Pro X.

of Rec. 709 imagery—even against the rigors of extreme visual effects processing, in which tone-scale blacks or highlights are stretched significantly. Like standard Apple ProRes 4444, this codec supports up to 12 bits per image channel and up to 16 bits for the alpha channel.

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