Quote:
Originally Posted by pinterf
Perhaps a rec601-709 mismatch happening somewhere in the conversion chain? (red cast)
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Could be, I'll have to dig through their code when I have more time to investigate.
Quote:
Originally Posted by raffriff42
There is an offset-by-negative-one for each round trip.
That's not a bug, it's a consequence of 8-bit math doing something (round trip) it wasn't designed to do.
Attempting to fix it results in a slightly worse one-way conversion.
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Well, as I said my test only proved there was an issue with reciprocal conversion, but I still noticed a greenish tint in a single conversion (e.g. just a single TV->PC conversion). There shouldn't be a tint in either direction (apart from saturation changes, I think) when a conversion is performed one-way.
Edit: I think I can cook up a better example with the Histogram() function that doesn't involve repeated conversions. I'll post back here when I have time (unless that patch has since made it into the release builds).