How to convert the Dual Language RMVB to 1 Language AVI

hahakl

Hi,
4 [6 [' B' A+ [' t$ A3 _TVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。
2 Z" E! r, w# l' FTVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。Anyone know what software can I use to convert the 2 language RMVB to 1 language AVI?
+ A, T6 B. k; @! r! j3 R4 l* htvb now,tvbnow,bttvb0 s# Z4 q: V( v% `
Thank you very much