Sony FDR-AX33 & Black Magic Intensity Pro 4K is NOT detected by Character Animator 2017 (Beta). Blackmagic software included with the capture card seems to be showing video on my Windows 10 (64bit) PC during my tests.
However, I tried switching to "next camera" and "default camera" on Character Animator, but still does not show up any video.
Unfortunately I don't believe that setup is currently supported (natively at least).
From the team: "It doesn’t work directly and we haven’t tested anything like this, but I’m sure there’s a niche workaround. Wirecast supports blackmagic input and I believe it also has a webcam output option. So theoretically, it would work as the BM to webcam converter."