This is a "release group" or uploader tag. In the world of digital media, specific groups (like JSTLSKMHD) encode and upload content. This tag acts as a signature so users can find other files processed by the same team, often known for specific quality standards.
Just let me know which direction you’d like to go (or if you have something else in mind), and I’ll dive right in! JSTLSKMHD -2017- www.SkymoviesHD.ltd 720p HEVC ...
The string "JSTLSKMHD -2017- www.SkymoviesHD.ltd 720p HEVC" seems to refer to a video file available in 720p resolution, encoded with High Efficiency Video Coding (HEVC), and presumably shared or downloaded through a website named SkymoviesHD. This kind of specific reference brings to the forefront two significant themes in the contemporary digital landscape: the advancements in video encoding and compression technologies, and the persistent issue of digital piracy. This is a "release group" or uploader tag