looking for a tool to compare the quality of two videos

[Johannesbeere]

If you reduce the noise (for example) in a video you can trust that the result is better than the source but it would be better to see the facts. I found a tool called Kinovea that can compare to videos but

Kinovea is a video player for sport analysis. It provides a set of tools to capture, slow down, study, compare, annotate and measure technical performances.

with completely different objectives, which is also shown by the fact that only a visual comparison in very small windows is offered.

after that I get the hint to that tool but looks like I am to stupid (or not deep enough in the technical aspects of the video technology) for that tool. The only answers in two hours with the free version was again and again some incomprehensible error messages

any better solution?

[Sharc]

If you reduce the noise (for example) in a video you can trust that the result is better than the source …..

Visual quality is very subjective, especially when it comes to filtering for noise reduction, for example. Keep in mind that reducing noise also means loosing details.

Are you a bit familiar with avisynth?
I usually compare 2 clips (of same resolution) using an avisynth script like

v1=yoursourcefilter_for_clip1
v2=yoursourcefilter_for_clip2 

out1=Interleave(v1.Subtitle("V1",align=5,size=48),v2.Subtitle("V2",align=5,size=48))
out2=stackhorizontal(v1,v2)

return out1 #for interleaved viewing
#return out2 #for side-by-side viewing

Open the script in MPC-HC for example and step through the frames, or watch it side-by-side (real time)