We've got two Vixias and they're connected over HDMI to a BlackMagic Intensity Pro card.

The only signal we can get over the HDMI cable is 1080i.

The BlackMagic card supports all sorts of different resolutions, but it seems like the Canon can only send 1080i over the HDMI cable. Is this correct? There's nothing in the documentation otherwise, and the option for changing the framerate in the setup screens is greyed out.

Ultimately, I am writing some software that will capture video from the Canon over the HDMI cable which is plugged into the PC with the BM card. Everything works successfully, *except* that I don't want to record 1080i video! I'd like to be able to change to 720p, etc. Seemingly, I can only send 1080i over the HDMI cable ... is that the case?