For those dealing specifically with older PC games that won't play their video files, dgVoodoo 2 is a lifesaver. It's a wrapper that translates old DirectX calls to modern DirectX 11/12.
If you've made it this far and are still having issues, the problem might be more complex. xxxvdo2013 fixed
This comprehensive guide breaks down exactly what this file error or rendering issue means, why it occurs in modern operating systems, and how to successfully execute a permanent fix. What Does "xxxvdo2013" Stand For? For those dealing specifically with older PC games
Федеральное агентство лесного хозяйства xxxvdo2013 fixed
The solution is to before installing the newer Xvid version. You could use Codec Tweaker to do this after an uninstall of Xvid 1.2.1 after a reboot as it cleans/checks for registry discrepancies.