It’s converting them between color spaces. I believe that the values you send to -addColorParameter: are in sRGB because that’s the color space that the user interface operates in. But your filter will process them in either linear or gamma-corrected RGB (depending on your -properties) with Rec. 709 primaries rather than sRGB primaries. Darrin On May 1, 2014, at 2:52 PM, Paul Miller <paul@fxtech.com> wrote:

If I create a color parameter in my filter with R=0.7647, G=0, B=0.349

When I read the color parameter I get this: R=0.734, G=-0.0002, B=0.30894

Why doesn't Motion like my default values? _______________________________________________ Do not post admin requests to the list. They will be ignored. Pro-apps-dev mailing list (Pro-apps-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/pro-apps-dev/dcardani%40apple.com

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