A good advice: Don’t use eurorack format video sythesis modules as long as you don’t really know VERY precisely what you want to achieve.
It might sound tempting and as easy as using modular systems for audio, but you should not forget all the peripherals that come with it: Analogue video signal chains are not really common and most of it really makes sense when you use them with analogue monitors etc.
I was studying at a media arts school and work as audiovisual artist and performer, and there is many artists out there, especially from the 90’s onwards, who do really great stuff in this field, but most of them come from circuit bending old video desks / controllers or using feedback techniques etc.
When it comes down to quality (in the sense of “cleanness”) I would always recommend to start with Touchdesigner, vvvv, maybe Max/MSP, to experiment and figure out what you exactly like about video arts. If something specific pops out there is always enough time to figure out what the benefit of the analogue processes of the equivalent techniques would be.
Another advice that I want to give: Try some more “low level” video synthesizers / environments like Resolume or Lumen before you dive deep into the node-based programming languages or modular video.
Most of the software that I have mentioned accepts MIDI and OSC for signal processing. You could even use your eurorack system to control stuff via modules like Expert Sleepers FH2, which has has two CV to MIDI Converters, or an audio-interface with DC-coupled inputs, or use AR Modulation with filters etc.