As stated in this post, Millumin natively supports such devices. Just plug your Blackmagic MiniRecorder, and it'll appear in Millumin's library (in "Inputs" folder).
We don't own such a device at our studio, but from user's experience, the Magewell Pro Capture Dual HDMI is natively supported by macOS : so usable directly in Quicktime X, as well as in Millumin.
However, I've also heard about limitations in capture resolution : it's working well at 1080p60 but not correctly at 4k. You should contact Magewell's support to get clear answers about what resolutions are supported on macOS.
In a general manner, there is a simple rule : if your device is detected by Quicktime X, it'll be in Millumin.
Comments
As stated in this post, Millumin natively supports such devices.
Just plug your Blackmagic MiniRecorder, and it'll appear in Millumin's library (in "Inputs" folder).
Best. Philippe
We don't own such a device at our studio, but from user's experience, the Magewell Pro Capture Dual HDMI is natively supported by macOS : so usable directly in Quicktime X, as well as in Millumin.
However, I've also heard about limitations in capture resolution : it's working well at 1080p60 but not correctly at 4k.
You should contact Magewell's support to get clear answers about what resolutions are supported on macOS.
In a general manner, there is a simple rule : if your device is detected by Quicktime X, it'll be in Millumin.
Best. Philippe