(Also, I'd like to remind that I don't have have any information about the actual content of the file, so the text above is just an educated guess)
The "1080p" part of the term refers to the resolution of the video, which is a measure of its quality. In this case, 1080p indicates that the video has a resolution of 1920x1080 pixels, which is a significant improvement over standard definition (SD) videos.
Elias was a "digital archeologist," a hobbyist who bought bulk lots of corrupted hard drives from government auctions and estate sales, hoping to find lost media or forgotten history. Most of what he found was mundane: blurry vacation photos, tax returns from 2004, and endless folders of music. Then he found the drive labeled Sector 7 .