MSI Z170-A PRO mobo is not on BMDs certified HCL of supported motherboards (in comparision the similar Asus Z170-A Premium is listed):
Any experience if Intensity Pro 4k on MSI Z170-A PRO will work?
Possibly experience with other analog video capture cards like these?
https://lists.cinelerra-gg.org/pipermail/cin/2021-December/004417.html
(PS: I have a similar Intensity post on BMDs forum in that thought there are other users)