These are "tags" or "watermarks" from the piracy groups/websites that originally ripped and distributed the file. Cast and Production
The specific filename you provided indicates a pirated version often found on torrent or third-party hosting sites. Here is what the technical tags mean: These are "tags" or "watermarks" from the piracy
A highly compressed file size, optimized for mobile viewing or quick downloads, likely using the x264 or x265 codec. These are "tags" or "watermarks" from the piracy