How to capture screen menus from HD device

[abrb]

Hi,

I have a HD satellite stb running linux enigma2.

I want to do a demo of the menu system, HD pic, channel changes etc.

The box has both component and HDMI out. I was hoping I could use a software solution. I can find plenty of ways to record the stream using only software, but nothing that will capture the onscreen menus.

There is another thread here detailing how to capture from a PS3 using a Hauppage HD PVR. I think that should work, but it's an expensive solution for a one off demo.

Would there be any solutions available to do what I want?