libvlc: work with filters & settings

[elwood]

Hi, I need to manipulate with settings such as "Contrast", "Brightness" and others while player is playing video, using libvlc 0.9.2 API.
I found some interfaces in libvlccore.dll (__var_Get, __var_Change, ..), but don't know, how initialize a chain of filters (adjust filter in 1st order), how connect that chain to mediaplayer's output, and how I can dynamically change filter' settings.

Simple adding parameters to vlc_instance_new() - that works, but it doesn't provide feature to manage this settings in real-time.

Thanks for any answers,
sry if my English is bad

ps I posted it into a Windows thread, but mb it isn't specific to win platform.