Nvidia Edge Enhancement
Nvidia Edge Enhancement 720p
While you can use something like MadVR to improve video quality, you should also make sure that you are enabling Nvidia's video enhancements which can make a large impact in terms of improving video quality. The impact on performance is minimal if you enable these enhancements, so I suggest utilizing Noise Reduction and Edge Enhancement whenever possible.
For this round of comparisons I am only using Edge Enhancement in the Nvidia Control Panel. I set Noise Reduction to "Use Player Settings". I then played a 720p video and raised the slider for Edge Enhancement by 10%. As you can see from the images below, the sweet spot for Edge Enhancement seems to be 30% or 40%, if you go much higher than 60% the video starts to show strange artifacts and the video gets "noisy". If you prefer sharper video with more "noise" then use higher percentages, if you prefer smoother video with less "noise" I would use 20% for Edge Enhancement.
I suggest you test this out on your own and pick the setting that looks best to you!
Edge Enhancement 10%
At only 10%, it's hard to notice the effects of edge enhancement, in fact MediaWiki complains about duplicate images even though I did change settings between screenshots. If MediaWiki can't tell the difference than your eyes probably won't be able to distinguish between no Edge Enhancement and 10% Edge Enhancement.
Edge Enhancement 20%
Next stop is at 20%, here you can just barely tell a difference between 10% and 20% Edge Enhancement, but it's noticeable ever so slightly. I don't know about you, but I hate changing a setting and barely being able to notice a difference, go big or go home, 20% is not enough, moving right along...
Edge Enhancement 30%
Alright, now we are getting somewhere. If you always wanted Harry's eyebrows to be slightly more crisp, then you will be pleasantly surprised! At 30% Edge Enhancement there is a noticeable difference in how sharp the edges are around things. 30% would be the minimum I would set this value to, otherwise you may as well just leave it disabled.
Edge Enhancement 40%
Now we are onto Edge Enhancement 40% Harry's eyebrows are sharper than ever, better than 30%, let's keep going to see how sharp we can make eyebrows.
Edge Enhancement 60%
At 60% there is still increased sharpness, and not any strange artifacts or other messed up looking things, but at this point you may start to notice more "noise". Some people like sharpness up to a point, but prefer a smoother or blurrier image over one that is super sharp. I think 60% Edge Enhancement is the sweet spot, but if you go too much higher the video will start to look strange and edges might start to "ghost" or whatever you want to call it.
Nvidia Edge Enhancement Summary
It's pretty obvious from the screenshots above that the Edge Enhancement setting found in Nvidia Control panel actually does a lot to improve video quality. You won't see much improvement until you raise Edge Enhancement to at least 30%, but I would try and set this at 60% and lower it only if you start to notice strange ghosting or artifacts while playing a video.
In addition to enabling Edge Enhancement and Noise Reduction you can also utilize Nvidia's DSR technology with PotPlayer which will resize the video to crazy high resolutions, and downscale the frame back to your monitor's native resolution. The visual improvement is similar to using DSR in while playing a game.
Other MadVR and Nvidia Related pages