MATROSKA_ID_AUDIOBITDEPTH  300 libavformat/matroskadec.c     { MATROSKA_ID_AUDIOBITDEPTH,      EBML_UINT, 0, offsetof(MatroskaTrackAudio,bitdepth) },
MATROSKA_ID_AUDIOBITDEPTH  599 libavformat/matroskaenc.c                     put_ebml_uint(pb, MATROSKA_ID_AUDIOBITDEPTH, bit_depth);