4k video light-painting is quite tricky, but it is possible. This guide is going to help you to achieve the highest possible resolution do to 4k with Virtual.ink. At the moment of writing this article, 4k works only on Windows 10 with ffdshow64.
- Download FFDSHOW 64bits here: https://sourceforge.net/projects/ffdshow-tryout/files/Official%20releases/64-bit/ffdshow_rev4531_20140628_x64.exe/download
- Install FFDSHOW, and make sure you check "RAW Video" on the second steps where you see options
- On your camera, make sure you can output 4k.
- Use a 4k hdmi to usb converter or a 4k webcam
1- Canon EOS-R + Inogeni 4k
2- Logitech Brio 4k (directly connected to the computer)