MATROSKA_ID_AUDIOSAMPLINGFREQ  298 libavformat/matroskadec.c     { MATROSKA_ID_AUDIOSAMPLINGFREQ,  EBML_FLOAT,0, offsetof(MatroskaTrackAudio,samplerate), {.f=8000.0} },
MATROSKA_ID_AUDIOSAMPLINGFREQ  595 libavformat/matroskaenc.c                 put_ebml_float (pb, MATROSKA_ID_AUDIOSAMPLINGFREQ, sample_rate);