Transcription of Apple ProRes
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Apple ProRes
Apple ProResWhite Paper January 2020 2 Apple ProResJanuary 2020 ContentsIntroduction 3 Authorized Apple ProRes Implementations 4 Apple ProRes Family Overview 5 Properties of Digital Images 8 Frame Size (Full-Width Versus Partial-Width) 8 Chroma Sampling 9 Sample Bit Depth 10 Properties of Apple ProRes Codecs 11 Data Rate 12 Quality 15 Performance 18 Alpha Channel support in Apple ProRes 4444 Codecs 22 Appendix 23 Target Data Rates 23 Glossary 26 3 Apple ProResJanuary 2020 IntroductionApple ProRes is one of the most popular codecs in professional post -production.
and Apple ProRes 4444 fully support 4:4:4 image sources, from either RGB or Y’C B C R color spaces. The fourth “4” means that Apple ProRes 4444 XQ and Apple ProRes 4444 can also carry a unique alpha-channel sample for every pixel location. Apple ProRes 4444 XQ and Apple ProRes 4444 are intended to support 4:4:4:4 RGB+Alpha
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