"SSNI-706-ES.mp4" refers to a specific video file, typically associated with Japanese adult media (AV).
If you found this file name, it is almost certainly a pirated or re-uploaded version of this compilation featuring Yua Mikami, specifically hardcoded with Spanish subtitles for viewers in Spanish-speaking regions. 1 STYLE label or how these are structured? SSNI-706-ES.mp4
: This is the "production code" or "ID." In the Japanese adult video industry, these codes are used to identify specific releases. The prefix SSNI belongs to the label S1 NO.1 STYLE , one of the most prominent producers in the industry. "SSNI-706-ES