Before revision: Shows that were made between the early 1980s and the early 2000s were generally shot on film, then transferred to video tape, and then edited natively in either NTSC or PAL , making high-definition transfers impossible as these SD standards were baked into the final cuts of the episodes.
After revision: Shows that were made between the early 1980s and the early 2000s were generally shot on film, then transferred to video tape, and then edited natively in either NTSC or PAL ; this makes, high-definition transfers impossible as these SD standards were baked into the final cuts of the episodes.