So I found the CME H4MIDI WC (CME H4MIDI WC: USB Host MIDI Interface + Router, Filter, Mapper) which apparently can take in usb midi devices, which is perfect for my APC40 MK2. I just ordered one on Amazon, and if this works, then my setup will be pretty easy, and will not need any networks. It would essentially be the following setup:
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APC40 MK2 connected to the CME H4MIDI WC through usb, with two midi outs into Laptop A (Main) and Laptop B. This will ensure one Midi Controller sends signals to both Laptops at the same time.
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Laptop A and Laptop B will be running the exact same VDMX project, both receiving same midi inputs for running the show. Both Laptops will be connected to a BlackMagic Atem 4K8 Switcher, which then Outputs onto the IMAG Screen for the audiences.
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If Laptop A dies, I use the Blackmagic switcher to quickly switch to Laptop B, which should be seamless and not really noticable by the audience. And that should be the only thing I need to do, I shouldn’t need to unplug or plug in any extra midi controllers.
Hope this option can work. If anyone spots any bugs in my setup, please do let me know.