Not a troll, I just misstyped.
I did use RevoUninstallerPortable to uninstall it, but apparently this is still on my PC, which is why I came back here.
And yes, I downloaded it from this site Codec Guide: K-Lite Codec Pack - For Windows 11 / 10 / 8.1 / 7
I've registered here just to post this:
I have installed the "K-Lite Mega Codec Pack 17.7.7" and during the installation made sure to decline any other additional software, but the Infatica thing still installed and I didn't notice it until 2 days later.
Meanwhile what it did was use over 2GB...