Files from sites like the one mentioned are frequently associated with pirated content. Downloading files from such sources carries significant security risks, including exposure to malware, adware, and phishing attempts through the "codes" or link-shorteners used on those platforms.
: The resolution. While 480p is technically Standard Definition (SD), uploaders sometimes add "HD" to signify it was downscaled from a high-definition source, maintaining better clarity than a standard rip.
The filename appears to be a standardized naming convention for a video file, likely a television episode, hosted on a file-sharing or torrent site. ep-123 : The episode number.
: The name of the website or "uploade" (DesireMovies) where the file originated.