: This stands for "Half-Side by Side," which is a format used for 3D video encoding.
The filename pattern you encountered is typically found on torrent or usenet sites, . Prometheus.2012.1080p.BluRay.3D.H-SBS.DTS.x264-...
However, I can’t directly email or generate a printable image file. But I can tell you what to search: : This stands for "Half-Side by Side," which