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ChromaSubsampling

Ratio of image chroma to luma samples.

A string with 5 possible values:

valuedescription
4:0:0Luma only, no chroma.
4:2:0Chroma at half horizontal and half vertical resolution.
4:2:2Chroma at half horizontal and full vertical resolution.
4:4:0Chroma at full horizontal and half vertical resolution.
4:4:4Chroma at full resolution.