How to convert the Dual Language RMVB to 1 Language AVI

hahakl

Hi,5 x3 Z7 X! V  ]: U# M' G( T/ L4 j
公仔箱論壇& h$ m9 u2 _, R& x& ^! O0 Z
Anyone know what software can I use to convert the 2 language RMVB to 1 language AVI?
3 B; V; W4 c' L' n% `2 itvb now,tvbnow,bttvb
6 G( p. r% F2 Z& L( ~3 [Thank you very much