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One thing I noticed with Graft's hue filter (Fdump's filter is based on it, since it used the same transformations) is the following:
Start with pure yellow (avs->blankclip). If you open the script in VDub, use Graft's hue filter and set the saturation to zero, you should get pure white. But you get R=G=B=234 instead. Perhaps it's because of the approximate transformations, perhaps there's an error in it. I really want to know how those transformations are derived.
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