#include "mkv_date.h" __time64_t mkv_date_as_time_t(mkv_date_t val) { __time64_t val_time = (__time64_t)val / 1000ULL /*nano->micro*/ / 1000ULL /*micro->milli*/ / 1000ULL /*milli->second*/; val_time+=978325200ULL; return val_time; }