How to convert the Dual Language RMVB to 1 Language AVI

hahakl

Hi,; k! H1 Q; t1 d' h+ x
tvb now,tvbnow,bttvb! {2 ~, B, B* k) L( P# i: T% N- q
Anyone know what software can I use to convert the 2 language RMVB to 1 language AVI?tvboxnow.com7 `0 D% f9 A% a6 {8 i) J8 z: @$ M/ b
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Thank you very much