Christian,

The Catalyst to SDI thing is something I and others have been musing over for years.

Firstly, a lot of the Catalyst stuff is calculated in Open GL on the graphics card, so routing the Catalyst output back through the SDI output on your decklink is not really an option. The other thing is that you'd want to genlock the output from the Radeon rather than the input.

Thirdly, I was under the impression that the ATI DVI to Component Video was a PC only option.

I'm afraid that scan converters are the only way to get Genlock and SDI output.

Hugh