> > > # define FFERR(e) (e) > > > #else > > > # define FFERR(e) (-(e)) > > > #endif > > > > AVERR() as this should be an exportet macro (the user after all > > should be > > able to test for specific errors) > > Ok Also, will still be handy to have the inverse macro as well to be able to use strerror on that. AVERRNO AV2ERRNO or whatever. Fran?ois.