Minor change in ffmpeg - need to modify step 6 for building transform360

[samuelgirardin]

I had to rebuild from scratch transform360 that I built 4 months ago. The libavfilter/allfilters.c seems to have changed.

So, REGISTER_FILTER(TRANSFORM360, transform360, vf); is now deprecated use this instead :

extern AVFilter ff_vf_transform360 ;

Another point : Did someone achieved to compile ffmpeg and transform360 as static (one binary file with no depedencies) . I spent many time on this with no success. I succeed to do a static build of ffmpeg and transformV1, but failed with transform360 (failed during configure, I can't get using .a opencv files instead of .so file). Any idea ?