CTA has recently published ANSI/CTA-6005, Multimedia systems and equipment — Colour measurement and management — Part 2-4: Colour management — Extended-gamut YCC colour space for video IEC 61966-2-4:2006. This standard represents the US National Adoption of IEC 61966-2-4:2006, which is applicable to the encoding and communication of YCC colours used in video systems and similar applications by defining encoding transformations for use in defined reference capturing conditions. If actual conditions differ from the reference conditions, additional rendering transformations may be required. Such additional rendering transformations are beyond the scope of this standard. 

For more information and to access the standard, visit Multimedia systems - Colour measurement and management - Extended-gamut YCC video.