请问：装了vobsub后，就不能播放视频了，是怎么回事呢

大家好，我装了vobsub后，在windows下用window media player 不能播放视频，显示Windows Media Player cannot play the file because there may be a problem with your sound or video device. Try installing a new device driver.把vobsub删了，就可以了。是怎么回事呢？

谢谢