"Such problem is hard to debug if you don't have an HDMI analyzer at hand." - Jeroen I was under the impression that HDMI and DVI use the same standard and are electronically equivalent. Of course, just because the signals mate doesn't mean the color space is the same. So any suggestions what one might use to analyze or discover the color spaces of an HDMI and DVI-D signal? The same question might be had for HD-SDI. I have a Phabrix analyzer and need to dive into it a little more to see what information I can extract. The device is fairly sophisticated. We are converting between HDMI, DVI and HD-SDI to use different types and levels of equipment. It is impossible to use just one standard these days. But in the conversion, things get messed up and I am experiencing this. I would like to be able to straighten it out. Dan