Sivr-171-d.mp4 〈Top 20 EXCLUSIVE〉

The identifier refers to a digital media file originating from the Japanese adult video (JAV) industry, specifically within the niche of VR (Virtual Reality) adult entertainment.

: Software capable of "mapping" the flat .mp4 file into a 180°/360° dome (common players include SkyBox VR, Pigasus, or DeoVR). SIVR-171-D.mp4

: The chronological release number in that specific series. The identifier refers to a digital media file