Filename as signifier Filenames function like headlines or labels: they promise content without fully revealing it. "SIVR-171-D.mp4" communicates format (.mp4) and a structured naming scheme (SIVR-171-D) that suggests this clip belongs to a larger set. Acronyms like SIVR could denote a project name, an institutional code, or even a genre marker: “SIVR” might mean “Simulated Immersive Virtual Reality,” “Survey: International Visual Records,” or something idiosyncratic to an individual’s catalog. The numeric sequence (171) implies chronology or indexing; the trailing letter (D) might signal a version, camera angle, or category. From such sparse cues, viewers instinctively construct backstories: Was this footage captured in a lab, archived by a news desk, or exported from a personal VR session?