How to change brightness of video player in C#?

[kukoc]

hi

im workin for last few days on possibility to modify brightness or contrast in my video player (avi, mpeg, wmv)
i was tryin with
- DirectX.AudioVideoPlayer
- Direct Show and Video Mixing Renderer
- Windows Media Player Component

in every case im able to play, pouse, stop, mute video and so on. but i stuck with controlling of brightness.

in AVP i havent find anything to workout.
in DS i found DirectShowNet library and with its help i tried to use ProcAmp Control Processing. but i fall into two errors - first 80040273 (VFW_E_DDRAW_CAPS_NOT_SUITABLE) happened becouse im using pivot monitor in vertical mode, so when i come back to horizontal - error gone. Second error 0x80040299 (VFW_E_VMR_NO_PROCAMP_HW) showed me that my hardware doesnt support ProCamp - strange.
so i decided to try WMP component and again found nothing about brightness/contrast settings, well exactly i found that this component doesnt provide VideoSettings. there is something about IWmpVideoSettingsCtrl interface but nobody knows how to find it. after another few hours of googling i found comertial component named "WMPEx" which provide wide functionallity of WMP, but it cost $1600 (lol), there is a free version of WMPEx but it only supports changing of hue.

and now i have no more ideas how to solve this problem.
please take a look at this. i hope that someone figured out it and found the solution.

regards kukoc