Comment by actionfromafar

The best solution for "normies" is to get a Panasonic DVD player with HDD recording ability. That thing has a circuit which synchronizes all scanrows, i.e. it completely removes all tearing of the image.

Then proceed with something to digitize the analog output from SCART2.

A couple of models with this feature:

https://www.youtube.com/watch?v=6XW_-16Vo4E

https://www.youtube.com/watch?v=LaH73rhBHbk