I have three different video files from there separate and distinct sources. All are encoded using XviD. However, I have run into issues with playback of files seemingly encoded with certain versions of XviD. Below I identified these with GSpot. For Example: Video File 1 is encoded with XviD ISO MPEG-4 and plays but seemingly has no audio. Video File 2 is encoded with XviD 1.1.0 Final and plays great with no issues. Video File 3 is encoded with XviD 1.1.0 Beta 2 and has no video but I can clearly hear the audio. I have never actually installed a XviD codec on my computer but I have installed and have been running DivX Pro 6.8 for quite a while now and I was under the assumption it could also play all manner of XviD files. Any thoughts? Thanks!
Try playing them back with VLC. It does not use any external codecs. http://www.afterdawn.com/software/video_software/video_players/vlc.cfm