Despite being a "lossy" compression, the 850 MB variant of Justice League became a staple on peer-to-peer networks for several reasons:
It is important to understand that any file fitting the Justice League 2017 HC 720p HDRip 850 MB description is an unauthorized, illegal copy of the film. Downloading or distributing such files is a form of copyright infringement and carries significant risks: Justice League 2017 HC 720p HDRip 850 MB
This signifies a High Definition (HD) resolution of 1280x720 pixels. While lower than 1080p or 4K, 720p provides a clean, sharp image on mobile devices, laptops, and smaller television screens. Despite being a "lossy" compression, the 850 MB
Many early digital leaks, including 720p HDRip 850MB versions, contained "HC" (Hardcoded) subtitles, often in Asian languages, which were burned directly into the video stream from theater-recorded sources. Many early digital leaks, including 720p HDRip 850MB
Let’s dissect the filename piece by piece to understand what technical specifications you are getting.