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"Is this flag sent over composite/SVideo?
Yes, both, as it is necessary for the analog color circuits to work.
In VCRs it is carried in the color-under signal just like the color subcarrier for the image content, since it is just a sample of the reference chrominance subcarrier. It is used in the VCR's special fast acting correction circuitry to take out variations due to mechanical tolerances and provide a stable chrominance signal for output to the TV.
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Old TV literature, New York World's Fair, and other miscellany
Last edited by old_tv_nut; 01-18-2023 at 01:37 PM.
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