site_archiver@lists.apple.com Delivered-To: pro-apps-dev@lists.apple.com Hi Pro Apps: Brad Wright _______________________________________________ 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'm trying to convert the Final Cut YUV into floating point RGB and then back to Final Cut YUV. I'm doing this in Core Image using a custom CIFilter kernel. So far, I'm stumped on how Final Cut is converting the raw image data into FxTextures. The values in the Texture don't match Y Pb Pr floating point. I've found that the value of white lies somewhere between Cb and Cr equaling 0.42 to 0.44 depending on the value of Y. How are 8 bit Y Cb Cr values getting mapped into FxTextures? Is it converted from Y Pb Pr values of +112 to -112 for Cb and Cr to some floating point value? I can't find any documentation on the mapping to and from YUV to RGB This email sent to site_archiver@lists.apple.com