Screen Capture Question

I have a 27 inch Imac and I have the Belkin AV360 unit > my Imac display.

Does anyone know how to capture or record the input coming from my xbox 360? It seems the Imac can’t do it b/c the xbox 360 is an external input.

Or do I have to return the Belkin av360 and get a capture card set up like everyone else?

From my understand the Belkin AV360 is just a converter from HDMI to mini display port so it will plays on the iMAC display, it does not have any video capturing capability. Therefore. Yes, you are going to have to get a capture card set up like everyone else.