ft = '57D8C920:01CBF9AB'
h2, h1 = [int(h, base=16) for h in ft.split(':')]
ft_dec = struct.unpack('>Q', struct.pack('>LL', h1, h2))[0]
ft_dec
129471528618740000
print(filetime_to_dt(ft_dec))
Datetime to filetime (Python)