Fix bug for mp4 in h5 (#882)

zhaomingwork

2023-08-21 50d6c96383a45b5e1c520468f6cd62551e1f49da

1
2
3
4
5
6
7
8
p m    p.m.
pm    p.m.
p.m.
p.m    p.m.
am    a.m.
a.m.
a.m    a.m.
a m    a.m.