It's really pretty impressive how quickly they churn out episodes. "Six Days to Air" is a really interesting documentary on that process. I wish they had incl

It's really pretty impressive how quickly they churn out episodes. "Six Days to Air" is a really interesting documentary on that process. I wish they had included more details on how they manage to get all of the animation and artwork done in such a short time window. They've got to have invested some considerable effort in their tooling and processes to support that - and they do touch briefly on the original way that the pilot and early seasons were produced, stop-motion with construction paper. Just the facial animation to sync up the mouths with the script, limited as it is in South Park, has to have some interesting automation underlying it. Unless they've got a huge army of animators chained to their desks pushing sprites around that they didn't show.