ENC_UNCERTAIN     714 libavcodec/cinepakenc.c #define CERTAIN(x) ((x) != ENC_UNCERTAIN)
ENC_UNCERTAIN     907 libavcodec/cinepakenc.c                                             &info, ENC_UNCERTAIN);
ENC_UNCERTAIN     921 libavcodec/cinepakenc.c                                                 &info, ENC_UNCERTAIN);