There are functions that may be used to correct a pixel with RGB values that will give "unsafe" values of chrominance signal or composite signal amplitude when encoded into an NTSC or PAL color signal. This happens for certain high-intensity, high-saturation colors that are rare in real scenes, but can easily be present in computer generated images. Consult the C++ Reference's "Related Pages > Lists and Functions > List of Video Color Check Utilities" for more information.