The result is certainly very processed-looking when you apply filtration as heavily as I have to, but considering how bad they looked before, and the target audience for old family films (who prefer something that looks artificial and clean to something that looks authentic and rough), I'm not too upset. (Using heavy noise reduction on movies for Blu-ray release, on the other hand, I would call a travesty, especially when the grain is part of the beauty of the original photography rather than a noisy mess like it is in my case.) The final result compresses so much better for streaming (very important in this day and age when you're sharing these with family all over the country), and in order to hide the artifacts and the frozen grain patterns that tend to result I add a thin bit of grain afterward to make it look more natural.
Many thanks, Gelinox! You've truly made AviSynth accessible to everyone!
