Someone with a sufficient itch (and some Elisp skills) could probably do for ffmpeg what the Magit team did for Git. Git's another program with a litany of options, and Magit does an outstanding job of covering them with an easy-to-use interface.

https://magit.vc/manual/magit/

Admittedly the ffmpeg bar is probably higher, esp. given that ffmpeg can be configured and built a couple dozen different ways.