While FCC rules generally apply to transmitted video, the implementation of those rules may help your video project look cleaner on a DVD or video presentation. The rules are there to keep chroma from being oversaturated and smearing; to keep extended blacks from running the transmitter at 100% power for too long; to keep white levels from causing a buzz on the older analog TVs; etc. So while some rules don't apply (you don't have to worry too much about transmitter power) they can be guidelines to help make your project more pleasing to the end user.
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Charlotte Public Television