It's a well commented script, so you can easily review it and edit it without compiling. Render on headless video rendering server by installing Linux, FFmpeg and Blender on a spare computer. It's GPL ...
"Proxy Editing - Change to Proxies" """Change filepaths of current strips to proxy files (_proxy.mov)""" # Shortcut: Ctrl + Alt + Shift + P (Blender 2.80 onwards) "Proxy Editing - Change to Full ...