[Cin] CinGG and ffmpeg 4.4

[Andrea paz]

Hi, Phyllis.
Sorry for the missing emails. Gmail of its own accord switches from
mailing list to private automatically, and I never check the headers
(sigh!).
Great that we got to the same point in the compilation, it means that
the errors are general and not of my system. I hope it can be solved
because updating ffmpeg is essential.

I didn't understand what I have to do with libavfilter_af_aformat.c

Do I always have to delete patch2 and 4 and change patch3? Have you
tried using ffmpeg.git_internal_api.patch. Does it work for you?