Valve has never released a standalone installer for Source Filmmaker. Since its public launch in 2012, SFM has been integrated into Steam’s library as a “tool,” not a standalone game. To download it legitimately, users must:
Drag and drop these folders into your SFM directory, usually located at: \Steam\steamapps\common\SourceFilmmaker\game\usermod\ . Source Filmmaker on Steam source filmmaker download no steam