The reluctant heir to the underwater kingdom of Atlantis.
It looks like you’re describing a specific file release of Justice League (2017). Justice League 2017 HC 720p HDRip 850 MB
The file name provides clues about what your viewing experience will be like: The reluctant heir to the underwater kingdom of Atlantis
This refers to the vertical resolution: 1280x720 pixels. In the world of compression, 720p is the "sweet spot" for mobile devices, older HDTVs, and users with limited bandwidth. It offers a significant upgrade over 480p DVD quality while maintaining a file size roughly 70% smaller than 1080p. Justice League 2017 HC 720p HDRip 850 MB