Does someone have a strategy for or list of softwares to use to accomplish this?

I’ve seen laserdisc rips that mention “This has been captured 5 times, then averaged to reduce dot crawl and noise.”

I’m wondering how to go about this “averaging”, with perhaps more disparate sources. I’ve got an episode of X-Men The Animated Series in PAL and NTSC. After syncing the video to 24fps and matching up the progressive frames, I wonder if some details could be produced, while also reducing MPEG-2 artifacts, combing and coloured noise.