site_archiver@lists.apple.com Delivered-To: pro-apps-dev@lists.apple.com Hi ProApps: Brad Wright DVDxDV _______________________________________________ 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: http://lists.apple.com/mailman/options/pro-apps-dev/site_archiver%40lists.ap... I have an FXPlug filter that uses a core image kernel to calculate the original Y values in a Ycbcr color space. Using Core Video in a separate applications, the values match the original Y values. Inside Final Cut Pro, the values are only matching in the first and last 10 percent or so of the video brightness range. I've tried Gamma Correction, and all forms of compensating I can think of, but it doesn't pull back the original Y values. What filters and working color space is Final Cut Pro using when it converts an image from Ycbcr into an FXTexture. I can explain the variation. This email sent to site_archiver@lists.apple.com