I'm trying to do a screencast with two screens side-by-side, each screen being square. Any tip might help.
I could use two computers and stitch the recordings together. But I would have to set the screen dimensions to something square. setResX and friends require me to reboot and turn off integrity security; same for hacking the monitor plist files (on El Capitan).
I could use one computer and have a split workspace. Still requires me to hack the screen plists or use setResX.
I could try to run OS X in VMware on OS X (how?). That gives more flexibility in setting the virtual screen I think.
Here is a nice idea, Syphon virtual screen. Doesn't work on El Capitan!
I dislike all of the above. Anyone have better ideas?