You can check the console debug logs for added of input/output events and device details.
You can download a virtual MIDI I/O controller for Windows here:
This code uses the WebMIDI.js library, referenced here:
Below you can test the MIDI hotkey commands
for VDO.Ninja below:
The idea of this app is to select a MIDI output loopback device. Pressing any of the below buttons will trigger the respective MIDI note/command, sending it to the output MIDI device.
Since the MIDI output device should be a loopback device, you can select the MIDI loopback device in VDO.Ninja as its MIDI input source.
Refer to the documentation for what a MIDI note/value does in VDO.Ninja, but it can be used to control the director's room, either locally or remotely.