: This is the "production code" or "ID" assigned to a specific film. The SSIS prefix belongs to the S1 NO.1 STYLE studio, which is one of the largest and most prominent adult media producers in Japan.
In the Japanese Adult Video (JAV) industry, these codes are used as unique identifiers for titles. Given the "SSIS" prefix, this specific title would feature an "exclusive" actress signed to the S1 studio. AVDRIVER_SSIS-296C.mp4
The filename follows a naming convention typically associated with adult video content, specifically from Japanese production studios. Breakdown of the Filename : This is the "production code" or "ID"