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Re: What is the color depth level of the DVD format?
Essentially all digital video formats (certainly all for the home) employ standards based on CCIR 601. This means, for standard definition, a master clock frequency of 13.5 MHz for luma, with half rate (6.75 MHz) sampling for chroma, and usually the chroma is line-sequential (4:2:0) also. Occasionally one runs across simultaneous quarter-rate (4:1:1) chroma, with 3.375 MHz sampling. The figures for HD 720 and HD 1080 are different, but the setup is the same.
In all cases sampling is 8-bit nonlinear. This holds for HD as well as SD material. 10-bit sampling is occasionally encountered in professional environments.
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