need help wiith the TMPGEnc 4.0 XPress

屁屁zzz

can anyone please help me with the TMPGEnc 4.0 XPress,when i covert the rmvb to mpg, the files are so big,how can i size it down.tvb now,tvbnow,bttvb8 {  j8 e7 e: [8 f4 A/ I
thank you so much!!!