How to convert the Dual Language RMVB to 1 Language AVI

hahakl

Hi,
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Anyone know what software can I use to convert the 2 language RMVB to 1 language AVI?公仔箱論壇0 |, N* _( Z* M7 R. G6 c  y

' k: P- y  L0 V; ?Thank you very much