Also, I’d like to make a video, showing me making the first few v3.0 shots, which would introduce my new workflow and how the spreadsheet will be used in it.
Can anyone recommend a good screen-capture software, that will be able to handle two 4K monitors, ideally saving each to its own video file, and won’t slow the computer down too much?

Another thing I could use some opinions on is what image file format to use for the image sequences.

Also, how can I load an image sequence into avisynth?