I recently came across the Megapixel PTZ controller (found on Amazon in a JideTech PTZ camera), and there were no controller scripts for this PTZ. I've since fixed that problem:
Github Repo: https://github.com/zafnz/zmcontrol-megaptz
Configuration is pretty standard, there's a README.MD in the repo, but the only thing you need to do is drop the MegaPTZ.pm in your controller directory and follow the setup instructions.
Supports PTZ, Iris and Focus.
(fwiw, not buying one of those cameras again
, they're only "meh")