I'd first ask why are you doing this? You won't get anything but larger files going from DV to ProRes through an analog connection. So why not just capture normally over Firewire?
I'm incorporating some legacy footage that only exists on DV with with HD material that makes up the bulk of my project and using the MXO2 to upres.
Well, my guess would be that you're trying to do two different things at once, 'capture' via FireWire, which is only really controlling the deck, and capture via the MXO2, which is doing the actual capture, and it just won't work. You may have to do this manually.
I'm a FCP switcher and I used to be able to capture analog with Firewire deck control, but Matrox no longer supports FCP7 in their current drivers so I've been attempting to use Premiere to capture. Perhaps Premiere's capture functionality isn't quite as robust.
I can't speak for how it works on Mac, but this method does, or at least did, work on the PC with MXO2, but haven't tried it lately with CS6.
Jim, he is not "capturing" with Firewire - you can certainly control the deck transport via Firewire without capturing at the same time. So you set "Device Control" to 1394, but set the capture input to MXO2. Then you get the 1394/timecode deck control, while capturing with MXO2 inputs. Pretty sweet deal when it works!
Sorry I don't have any Mac troubleshooting experience
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Jeff, thanks for confirming that it is supposed to work that way in theory. Don't have PC though so I can't tell if it's just a Mac thing or if the problem exists with Premiere or the Matrox drivers. Unfortunately, Matrox has discontinued it's old stand alone capture utility so I can't isolate the problem.
There is an option to connect a RS-422 serial cable between the deck and the MXO2 for deck control, but don't have any of those cables, never needed them before. Have no idea if it woulld perform the same way with that connection.