Yeah, there's a magic box made by Snell & Wilcox (now part of Snell Advanced Media) called the Alchemist, and it does an extraordinarily good job at converting NTSC to PAL or PAL to NTSC. When you use a box like that, it covers up all kinds of problems and can make even 1960s or 1970s videotape look even better than it did 40 years ago. Everybody uses this now when they have to convert 25fps -> 29.97fps or similar conversions for European TV shows going to America. There was a time in the 1970s when they were doing "optical conversion" for PAL -> NTSC, which basically means shooting a high-res monitor with a TV camera. Not exactly ideal. The old PAL conversions looked really soft and muddy, and once they figured out how to do it digitally, the pictures got a lot sharper with fewer artifacts.