Compile FFmpeg as iOS 8 Framework

I successfully compiled FFmpeg with iOS 8.2 SDK thanks to https://github.com/kewlbear/FFmpeg-iOS-build-script and last version of gas-preprocessor (https://github.com/libav/gas-preprocessor).

However, I would like to package FFmpeg libraries as a iOS 8 dynamic framework due to legal constraints. I found resources to create iOS 8 dynamic framework however I cannot find any solution for FFmpeg.

Can anyone help me to package these librairies ? Thanks David