This usually refers to the title of the television series. In this context, it likely refers to the sci-fi/horror series From (created by John Griffin), which follows the mystery of a town that traps all those who enter.

This describes the source of the video. It means the content was recorded from a High-Definition Television broadcast rather than a Blu-ray rip (BDRip) or a digital streaming service (WEB-DL). Content Context

Used as a standardized naming convention to help users identify the quality and language of a file before downloading.