Just installed the v3.11 (to Yosemite 10.105 iMac).
It works quite well and displays all the relevant media information I was hoping it would.
The big plus is the "Comparison" tab on the main window, which allows for several same or similar media to be compared in column fashion.
As well, it has a "Highlight differences" check-box which grays-out the same specs and draws attention to the differences. Which is what I was most looking for in the program.
(You could do it in a sort of 'blink-comparison' mode shifting between two files, in this and some similar apps, but the actual Highlight differences here is much easier to work with I think.)
One other little feature I just noticed, is that at bottom right of the window, it shows the total time (sum) of all the media files you have dragged into the examination list column (on the left side).
Re. the separate Invisor Quicklook app program.
I did have to manually open the package on the Invisor QuickLook.app and drag copy the InvisorQL.qlgenerator from it to the /Library/QuickLook folder, to get it to show Finder Quicklook previews. Maybe it was because I had an older version there which I had forgotten about... Oh well, no worries, the InvisorQL.qlgenerator v3.2 is working fine.