Hi; I need to convert a frame from RGB to planar YCrCb 4:2:0. The frame is in a large unsigned char array (width * height * 3), or in a unsigned char matriz ((height) x (width * 3)); it's the same. I need a fast library that does that for me, or a pointer to where I can find a fast algorithm. Thanks. Canek -- Never leave anything to chance; make sure all your crimes are premeditated.