EBML_ID_DOCTYPE   410 libavformat/matroskadec.c     { EBML_ID_DOCTYPE,            EBML_STR,  0, offsetof(Ebml, doctype),         { .s = "(none)" } },
EBML_ID_DOCTYPE  1810 libavformat/matroskaenc.c     put_ebml_string(pb, EBML_ID_DOCTYPE           , s->oformat->name);