2017 was a peak year for the South Korean "WEB-DL" adult film market. Unlike traditional cinema releases, these films were produced specifically for Video-on-Demand (VOD) and IPTV services. They are characterized by high-definition digital cinematography, relatively short runtimes (usually 70 to 90 minutes), and a focus on domestic, melodramatic settings.
Some digital releases included short clips of "behind-the-scenes" footage or extended cuts that weren't in the original VOD broadcast. The Stepmother 15 -Sweet Sinner-- 2017 WEB... Extra
In many cases, "Extra" is simply a tag added by digital archivists to signify a "Special Edition" or a file that includes promotional trailers at the end. 4. Technical Specifications 2017 was a peak year for the South