I haven't played around much with ffmpeg-python, I used to use fluent-ffmpeg for a bit. They're an improvement over writing raw command strings, but they lack static analysis features to verify the correctness of your command at compile time. There's only so much you can do with the constraints of general programming languages.

I'm going to add the ability to export graphs as ffmpeg-python/fluent-ffmpeg code, and to import a graph from ffmpeg-python/fluent-ffmpeg code as well.