Complex sentence: This required an atypical production approach, with many elements of post-production requiring consideration before principal photography; the script took two years to write, the cast went through several weeks of meticulous rehearsals, and during shooting takes were cut for the slightest mishaps.
Split into simpler sentences: This required an atypical production approach, with many elements of post-production needing to be considered before principal photography. As a result the script took two years to write, the cast went through several weeks of meticulous rehearsals, and during shooting takes were cut for the slightest mishaps.