: The name of the website or group that originally uploaded or distributed the file.
The text you provided looks like a for a movie or TV show, likely sourced from a third-party downloading site. Based on the naming convention, here is what the specific parts mean: sivudu-720p-hevc-hd-desiremovies-beauty-1-mkv
: This is often a "tag" used by certain encoders or uploaders to identify their specific release. 1.mkv : The file format (Matroska Video). : The name of the website or group