On Windows, the NVIDIA control panel provides some features that I use a lot when watching movies; you can adjust the gamma and other settings, such as dynamic contrast and color enhancement. I've been using these for a while as they make a big difference with Dark Movies. These settings, I assume are somehow magically "better" than directly adjusting settings in a video player software. The settings only affect video playback and not the Desktop colors or other applications. (This is not a critical feature for me to have but I'm just mentioning it so people know what I'm talking about)
What would be the equivalent to this on a mac?