Color correction with staxrip and x264

[crystalfunky]

Hi everybody,

I've searched forever and hope now to find some help here.

I've some x264 mkv's which need color correction.
I need contrast, gamma, saturation, all that stuff.

So far I tried using the "tweak" filter in staxrip from avisynth but the result was always unsatisfactory.

Please advise.