alishkeir/freemocap ? reverse-engineered prompt

Build me a free, easy to run motion capture app for regular people and researchers.

I want a Python app that launches with a simple GUI, lets someone record motion capture data from common cameras without needing fancy hardware, and guides them through the process from setup to capture. It should feel approachable for beginners, but still be useful for research and teaching. Make it installable and runnable from the command line, and keep the experience simple enough that a new user can get started quickly with clear screens and obvious next steps.

If you need to check current library docs or best practices online, go ahead and look them up. Please make the project clean, usable, and ready to run from source with the main app starting from the package entry point.