How to convert the Dual Language RMVB to 1 Language AVI

hahakl

Hi,2 v5 _- c2 U1 R: l4 L6 |" J
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Anyone know what software can I use to convert the 2 language RMVB to 1 language AVI?8 V" U: y3 D- `; G8 }, S
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Thank you very much