Python: PSF license, https://www.python.org/
pygame-ce 2.5.8: LGPL 2.1, https://github.com/pygame-community/pygame-ce/tree/2.5.8
PyAV 19.0.2: BSD 3-clause, https://github.com/PyAV-Org/PyAV/tree/v19.0.2
Bundled FFmpeg and codec libraries are supplied by the official PyAV Windows wheel.
Build recipes and upstream source references: https://github.com/PyAV-Org/pyav-wheels
FFmpeg: https://ffmpeg.org/ ; x264: https://www.videolan.org/developers/x264.html
x265: https://www.videolan.org/developers/x265.html
PyInstaller bootloader: GPL with bundling exception, https://pyinstaller.org/
