Just started this project last night as I needed a way of getting a binary for one of the components.
I decided to repack the prebuilt binaries and serve as an API along with a Node module (can be used through CLI). Can be useful to someone else in CI builds or something.
Currently it only serves ffmpeg 3.2. You need to manually run unzip right now but will implement that step into the process as well.
http://ffbinaries.com/
https://www.npmjs.com/package/ffbinaries