Multiple audio - video calls between a pythonn master server peer and three browser client peers using python, pyqt5 pyngrok, aiohttp aiortc and so more.

Requirements:

1. pyav (https://pypi.org/project/pyav/)
2. pyqt5 (https://pypi.org/project/PyQt5/)
3. aiohttp (https://pypi.org/project/aiohttp/)
4. aiortc (https://pypi.org/project/aiortc/)
5. pyaudio (https://pypi.org/project/PyAudio/)
6. pydub (https://pypi.org/project/pydub/)
7. pillow (https://pypi.org/project/pillow/)
8. pyngrok (https://pypi.org/project/pyngrok/)
9. pygrabber (https://pypi.org/project/pygrabber/)

Installation instructions:

1. Install all the required modules using pip command: pip install pyav PyQt5 aiohttp aiortc PyAudio pydub pillow pyngrok pygrabber
2. Create an account to ngrok tunel service (http://www.ngrok.com) and then visit https://dashboard.ngrok.com/get-started/your-authtoken to copy the authentication command.