converter RM/RMVB to VCD no sound

lojonnweng

converter RM/RMVB to VCD no sound5.39.217.76% f$ ~. W8 g6 b( m  e
5.39.217.765 d% E! `& f7 f! g; B. R: D* `- M  m
曾嘗試使用WinAVI Video converter 7.7,轉換後只有畫面無聲,請問有無人可以指教一下,多謝!