請問vlc的問題

請問為甚麼我用vlc看.wmv檔時，只有聲音而沒有畫面啊
然後會出現
error
An error has occurred which probably prevented the execution of your request:
main: no suitable decoder module for fourcc `WMV3'.
VLC probably does not support this sound or video format.

請問我該怎麼做呢？謝謝。