@captainsolo: Thanks!
And yes, please somebody invent a magic anti-smearing plugin for avisynth. :)
I kind of understand why they did the DVNR back then though. It was probably considered state of the art back then, as it did remove lots and lots of dirt and stuff, which can clearly be seen if comparing it to msycamore's Technidisc capture.
And back then, people were used to see smearing on TV. Basically everything shot on video had smearing.
Of course I still dislike the smearing very much, but I understand how it worked to release this back then.