The source. This was "downloaded" directly from a streaming service (like Netflix or Amazon) without re-compression, preserving high quality. DD5.1: Dolby Digital 5.1 surround sound audio. H.264: The video codec used to compress the file. About the Movie: The System (2022)
File strings like this are packed with technical specifications: The title and release year. PLSUB: Indicates Polish subtitles are included. 1080p: The resolution (High Definition, 1920x1080 pixels). The.System.2022.PLSUB.1080p.WEB-DL.DD5.1.H.264-...
If you are looking for information on the content of the film itself: The source