MATROSKA_ID_AUDIOBITDEPTH  371 libavformat/matroskadec.c     { MATROSKA_ID_AUDIOBITDEPTH,        EBML_UINT,  0, offsetof(MatroskaTrackAudio, bitdepth) },
MATROSKA_ID_AUDIOBITDEPTH 1000 libavformat/matroskaenc.c             put_ebml_uint(pb, MATROSKA_ID_AUDIOBITDEPTH, bit_depth);