FDKENC_VER_AT_LEAST   55 libavcodec/libfdk-aacenc.c #if FDKENC_VER_AT_LEAST(4, 0) // 4.0.0
FDKENC_VER_AT_LEAST  165 libavcodec/libfdk-aacenc.c #if FDKENC_VER_AT_LEAST(4, 0) // 4.0.0
FDKENC_VER_AT_LEAST  192 libavcodec/libfdk-aacenc.c #if FDKENC_VER_AT_LEAST(3, 4) // 3.4.12
FDKENC_VER_AT_LEAST  328 libavcodec/libfdk-aacenc.c #if FDKENC_VER_AT_LEAST(4, 0) // 4.0.0
FDKENC_VER_AT_LEAST  449 libavcodec/libfdk-aacenc.c #if FDKENC_VER_AT_LEAST(3, 4) // 3.4.12