#22 1 duplicate frame(s)!

[Bobby]

I am runnning mencoder 0.7.7 on OS 10.2.6 and when I
try to convert a DVD to DivX on every line in the terminal I
get 1 duplicate frame(s)!

Is this normal or is there something I am doing wrong?

Pos: 0.5s 13f ( 0%) 0fps Trem: 0min 0mb A-
V:0.007 [0:0]
1 duplicate frame(s)!
Pos: 0.7s 17f ( 0%) 0fps Trem: 0min 0mb A-
V:0.023 [0:32]
1 duplicate frame(s)!
Pos: 1.0s 25f ( 0%) 0fps Trem: 0min 0mb A-
V:0.023 [0:32]
1 duplicate frame(s)!
Pos: 1.3s 33f ( 0%) 0fps Trem: 0min 0mb A-
V:0.023 [43:32]
1 duplicate frame(s)!
Pos: 1.6s 41f ( 0%) 0fps Trem: 0min 0mb A-
V:0.020 [40:32]
1 duplicate frame(s)!
Pos: 1.7s 45f ( 0%) 0fps Trem: 0min 0mb A-
V:0.023 [39:40]
1 duplicate frame(s)!
Pos: 1.9s 49f ( 0%) 0fps Trem: 0min 0mb A-
V:0.026 [38:50]
1 duplicate frame(s)!
Pos: 2.1s 53f ( 0%) 0fps Trem: 0min 0mb A-
V:0.028 [37:63]
1 duplicate frame(s)!
Pos: 2.2s 57f ( 0%) 0fps Trem: 0min 0mb A-
V:0.031 [38:78]
1 duplicate frame(s)!

and it is still doing it (I am still encoding the movie just in
case it works)

THanks for any help