Help! I have audio but no video while playing an AVI file in Windows Media Player. In the following tutorial, I'll show you how to playback AVI files with Windows Media Player that were created using the XVID, DX50, DIVX, or mp4v video compression format. By default, Windows Media Player will playback the audio of these AVI files, but will not render the video. To fix this problem, we simply need to install the proper XVID codec and we will be on our way to watching those XVID encoded AVI movies on our PC.
How to play .AVI movies in Windows Media Player:
The XVID codec was found on Koepi's Media Development Site (official supplier of compiled XVID codec). You can get the latest revision Here.