I wonder if you could use Adobe Media encoder with a network watch folder specified? that would be pretty fun, especially if you had a 10gb LAN.
The online Apple Store posted refurbished 2018 Mac Minis today. Usually savings are around 15% less vs new and they come with the same 1 year warranty.
Oh nice! Looks like I could get a slightly upgraded version at the same price as I was planning. Thanks for letting me know!