How to create rainbowing and dotcrawling?

[Enigmo]

Hi,

I want to recreate the rainbowing and dotcrawl artefact present in older video. Is there any filter for AviSynth which (either intentionally or unintentionally) can do this?

A doom9 user created something called dotcrawlplus a few years ago but there weren't any results shown on actual video footage and I couldn't get it to work for some reason so I want to look for alternative ways.

Is anyone knowledged on the cause of the rainbowing on older video and how we might emulate this?

Thanks.

[StainlessS]

Avisynth dot crawl effect (make your video ugly on purpose):- https://forum.doom9.org/showthread.php?t=170433
Using "NTSC filters" in Avisynth script?:- https://forum.doom9.org/showthread.php?t=170604
Craziness strikes: DotCrawl():- https://forum.doom9.org/showthread.php?t=69472
One-inch Type C videotape characteristics and simulating them :- https://forum.doom9.org/showthread.php?t=171336
I want to upscale a Super Nes video in HD :- https://forum.doom9.org/showthread.php?t=173788&page=8
CRT emulation with scanline and phosphor effects :- https://forum.doom9.org/showthread.php?p=1683051
Page from(QTGMC Deinterlacing Script (v3.32) ):- https://forum.doom9.org/showthread.php?t=156028&page=26

Plus more from Google("dotcrawl emulation site:forum.doom9.org"):- https://www.google.co.uk/search?q=dotcrawl+emulation+site:forum.doom9.org&sa=X&ved=2ahUKEwigic6BnIfjAhUZShUIHbNZBcgQrQIoAzABegQIBhAK&biw=1920&bih=920

EDIT: We waited a long time for this 1st post of yours ( Welcome to the forum :) ).