Quote:
Originally Posted by old_tv_nut
This is an old well known NTSC artifact called "cross-color" - where high frequency luminance details (lines or sharp edges) get into the color circuit and are demodulated as flickering color information. A comb filter reduces this greatly, but not on diagonal lines. It does not occur in purely digital systems, but can be seen when the digital signal is converted to NTSC for existing sets. (Or, sometimes, if the original signal fed to the digital system comes from an NTSC source, it may appear in the digital signal from that point onward.)
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If the set has an S-video input, it should eliminate the problem.