The VideoLAN Forums

Hi,

Tools > Effects and Filters > (Tab) Video Effects > (Tab) Essential
Clicking Image ajust
The sliders for Contrast, Saturation & Gamma don't work properly.

Tried both VLC 3.0 32-bit and 64-bit with same result

Uninstalled 3.0 and installed 2.2.8 and Contrast, Saturation & Gamma works as it should

You probably need to turn off hardware acceleration if you want those effects.