MATROSKA_ID_DURATION  425 libavformat/matroskadec.c     { MATROSKA_ID_DURATION,      EBML_FLOAT, 0, offsetof(MatroskaDemuxContext, duration) },
MATROSKA_ID_DURATION 1862 libavformat/matroskaenc.c             put_ebml_float(pb, MATROSKA_ID_DURATION, scaledDuration);
MATROSKA_ID_DURATION 1866 libavformat/matroskaenc.c             put_ebml_float(pb, MATROSKA_ID_DURATION, scaledDuration);
MATROSKA_ID_DURATION 2559 libavformat/matroskaenc.c         put_ebml_float(mkv->info.bc, MATROSKA_ID_DURATION, mkv->duration);