If it's 1080p then there's no scaling going on... so madvr is useless unless you happen to have a custom 3dlut. Only BD sources will get you this though - for 480p and lower madvr makes stuff watchable where everything else fails.
LAV can decode wmv anyway iirc. So ditch wmp, vlc, and get Foobar2k (for music) and mpc-hc (for everything else). I assume you know how to set mpc-hc up... if not just download the test Kawaii Codec Pack and install that with highest quality settings.
If your source video is 1080p and your monitor is 1440p then there will still be scaling going on and it will essentially be "better" than 1080p video. I have had a lot of fun optimizing this with blueray content and comparing it to the native upscaled look. It is really amazing how good a blueray movie upscaled to 1440p actually looks.
Also video acceleration is not contingent to madvr's processing or use of the GPU. For evidence i have madvr running and the GPU is being used (unfortunately Madvr only uses 1 GPU and does not currently support SLI ).
I'm curious to see how it does motion interpolation for 60hz output (my HDTV) - i feel like itll do that crappy motion smoothing (soap opera) effect that comes with most newer TVs
Or even just general image quality - is it sharper than VLC's highest quality setting, or does it 'improve" it to a point that it actually makes the picture look different than intended.
Madvr has an option called "smooth motion" this is frame duplication that is used to improve motion fluidity but not change the intended look of the video like frame interpolation(soap opera). Also MPC with madvr looks hands down better than VLC in really any circumstance that i have seen or tested.
Madvr will upscale and enhance 1080p video however depending on the bitrate and quality of your origin content it may not be severely noticeable as the quality is already very good. This is also going to be defendant on how far you are from the screen and how good your eyes are
Edited by Spartan F8 - 9/16/13 at 2:05pm