The Motion Detect filter is very easy to install. First of all, copy the VHMotionDet.ax file in C:\WINDOWS\system32. Right click on the file and select Register ActiveX (see the screenshot
If you want to uninstall the filter, select Unregister ActiveX instead and remove the VHMotionDet.ax file from the system32 folder.
The Motion Detect filter has not been updated anymore since 2005 and it is considered obsolete. Its features can be found in newer products and using this filter is only recommended on older machines.
Some configuration options that you can adjust using the Motion Detect filter are sensitivity, searching range, maximum difference and pass through frame rate to the filter.