How to convert the Dual Language RMVB to 1 Language AVI

hahakl

Hi,tvb now,tvbnow,bttvb, X/ N1 ^! ?+ [
tvb now,tvbnow,bttvb1 \9 d& ?: P; f
Anyone know what software can I use to convert the 2 language RMVB to 1 language AVI?
. o5 A$ A& p8 {7 D( ?公仔箱論壇
) S! r5 \; |5 b6 [' H8 a0 U9 HThank you very much