Post production refers to the tasks that must be completed after filming or shooting ends. This includes editing raw footage, adding transition effects, working with voice actors, and dubbing. Post-production is the third and final step of film creation, following pre-production and production. With digitization, the post-production process can be completed with higher quality and in less time. To create a professional horror trailer, specific post-production tasks are needed like cutting unnecessary footage, speeding up or slowing down parts to build tension, adding transition effects, incorporating eerie music and sounds, and adjusting lighting with filters if needed.