Picture is upside-down or mirrored when playing XviD movies If you don't already have the latest version of the
XviD codec installed, make sure to upgrade before trying any of these suggestions. We recommend uninstalling all previous versions of the XviD codec before you upgrade to avoid possible conflicts with the new version of the codec.
If the video still plays upside-down or mirrored after upgrading, it's likely that you have some conflicting DirectShow filter(s) installed that are flipping the video. The two most common filters that cause these type of problems are the Bicubic Resize filter (bicubic_resizer.ax) and the G400 filter (divxg400.ax). To check if any of these filters are installed, simply look for the files in your C:\Windows\System32 directory (on the drive where Windows is installed). If you find any of these filters installed, simply goto the Start menu in Windows and select "Run...", then enter "regsvr32 /u filename.ax" in the box and click the OK button to unregister the filter.
Another way to fix the problem is to simply reconfigure the XviD codec to flip the video. To do this, goto the Start menu in Windows and select "Run...", then enter "rundll32.exe xvid.ax,Configure" into the box and click the OK button to launch the XviD Configuration tool. Try to change the "Flip video" option and see if it fixes the problem.