To register a DirectShow library enter this command in Run:
Code:
regsvr32.exe <myfilter.ax>
To unregister a filter, add /u parameter
Code:
regsvr32.exe /u <myfilter.ax>
<Myfilter.ax> is the full path to your library. For quartz you just enter "regsvr32 quartz.dll" because it is in the searchpath (system).
To find out what filters are in use you can load your video file in
mplayer2.exe (legacy Windows Media Player), rightclick in the play window, choose
Properties and
Advanced. Mplayer2 most likely can also be run by typing its name in Start -> Run.