put_ebml_float    996 libavformat/matroskaenc.c         put_ebml_float (pb, MATROSKA_ID_AUDIOSAMPLINGFREQ, sample_rate);
put_ebml_float    998 libavformat/matroskaenc.c             put_ebml_float(pb, MATROSKA_ID_AUDIOOUTSAMPLINGFREQ, output_sample_rate);
put_ebml_float   1943 libavformat/matroskaenc.c         put_ebml_float(pb, MATROSKA_ID_DURATION, mkv->duration);