I've tried many different filters and settings to try to sharpen the image and denoise it. It's very difficult if not impossible to sharpen the video without introducing some kind of other problem. When sharpening one area an other area gets grainy. When removing noise, detail is lost elsewhere and so on. I think the only way is to apply different filter sets to each individual scene or part of a scene (which is ofcourse very time consuming). So right now I think I'll just leave the sharpness and noise as is and just try to get the brightness and contrast right.