Filmmaker mode is a present picture mode in TV it makes your TV screen more cinematic. You already know about picture mode options in your TV such as game, vivid, sport, etc. Filmmaker is also another mode. If you want to know more details about what is filmmaker mode then it adjusts the picture quality and turns off post-processing to enhance picture quality.
Read more information here - https://techquerry.com/how-to-use-filmmaker-mode-samsung-tv/
Read more information here - https://techquerry.com/how-to-use-filmmaker-mode-samsung-tv/