How to convert the Dual Language RMVB to 1 Language AVI

hahakl

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; i9 n% i  t1 I+ c1 A( z) z: P  B: mtvb now,tvbnow,bttvbAnyone know what software can I use to convert the 2 language RMVB to 1 language AVI?公仔箱論壇7 O8 B8 L4 a  X" h' d# l

8 g/ {  A" f, \6 o# X/ mtvb now,tvbnow,bttvbThank you very much