Is SheerVideo more powerful than uncompressed, Apples None codec, or Apples Component Video codec?
Yes. Using an uncompressed Y’CbCr 8b 4:2:2 codec such as Apple’s Component Video codec to encode RGB 8b or Y’CbCr 8b 4:4:4 video compresses the data by a factor of 1.5 by throwing away half the chroma samples. For real-world RGB 8b video, SheerVideo RGB 8b (2.20) is more than 46% more powerful than any uncompressed Y’CbCr 8b 4:2:2 codec (1.5); and for Y’CbCr 8b 4:4:4, SheerVideo Y’CbCr 8b 4:4:4 (2.84) is more than 89% more powerful than any uncompressed Y’CbCr 8b 4:2:2 codec (1.5). Moreover, the matched SheerVideo codec retains perfect fidelity, whereas Apple’s Component Video codec, for example, degrades real-world RGB 8b images by over 3.8 bits per sample. In addition, SheerVideo compresses 15% faster than Component Video. When using an uncompressed codec matching the source video format, the compression power is 1.0, meaning no compression at all. (Hence the name “uncompressed”.) In these cases, SheerVideo is obviously much more powerful than uncompressed. For example, for real-worl
