: This is a specific release group tag (the group of people who ripped and uploaded the file).
: Indicates 4K resolution (3840 × 2160 pixels), the highest standard for home viewing. M3GAN.Sin clasificar.2160p.PCOK.WEB-DL.DD2.0.HD...
The text you provided is a standardized , which acts as a technical shorthand used by file-sharing groups to describe the specific version and quality of a digital movie file. Based on the components of your string, M3GAN : The title of the 2022 horror film about an AI doll. : This is a specific release group tag