Ammonite.2020.720p.bluray.800mb.x264-galaxyrg |top|

: This is the file size of the video, measured in megabytes. Given that the video is in 720p and encoded with x264 (more on that below), an 800MB file size seems reasonable for a movie-length video at this quality level.

: The "Release Group" responsible for the encode. GalaxyRG is well-known in the scene for creating "mini-encodes"—very small file sizes aimed at users with limited storage or slow internet. Film Overview: Ammonite Ammonite.2020.720p.BluRay.800MB.x264-GalaxyRG

The filename does not specify audio codec, but based on GalaxyRG conventions for 800MB rips: : This is the file size of the video, measured in megabytes