How to convert the Dual Language RMVB to 1 Language AVI

hahakl

Hi,公仔箱論壇' [1 \' G1 N* X2 r/ ]0 n* c
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Anyone know what software can I use to convert the 2 language RMVB to 1 language AVI?2 N0 Z2 i0 `9 f* j: W) h  b
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Thank you very much