FLV_SAMPLERATE_44100HZ   61 libavformat/flvenc.c         return FLV_CODECID_AAC | FLV_SAMPLERATE_44100HZ | FLV_SAMPLESSIZE_16BIT | FLV_STEREO;
FLV_SAMPLERATE_44100HZ   65 libavformat/flvenc.c             flags |= FLV_SAMPLERATE_44100HZ;