How to convert the Dual Language RMVB to 1 Language AVI

hahakl

Hi,tvb now,tvbnow,bttvb2 d0 f7 F5 Z9 x$ z* Q6 X

* R4 N2 M7 J! `& C1 V  B' |tvb now,tvbnow,bttvbAnyone know what software can I use to convert the 2 language RMVB to 1 language AVI?
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Thank you very much