Use VLC's help documentation
If you can't find anything about your particular problem in the internet, you should try the function VLC has for the command line.
Open your command-line and write “vlc –help” in it. You´ll now have a .TXT file created, which contains VLCs command-line options. Your screen will now show you a list, which you can browse through to find your problem.
If you still cannot solve your problem try to write “vlc -p module –advanced” in the command-line.