I am getting the following error:
Selected video format is not supported by this device:
bdmModelHD1080i50
Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED))

I am using:
Windows 10
Blackmagic Decklink 4K Extreme 12G card
Input: SDI 1080i50
Output: HDMI

This set up works when I turn off vmix. As in, I can see the sdi input and view the HDMI output when HDMI is plugged into a monitor. However, vmix is not available to send output video. The input video works fine in vmix.