: The file extension for the Roshal Archive compressed format.
A refers to a "Blu-ray Remux." This is a file created by taking the raw video and audio streams directly from a physical Blu-ray disc and placing them into a modern container format, such as Matroska (.mkv), without re-encoding the data. Wrath21BDRemux.part23.rar
: Likely a shorthand reference to the title of the content (e.g., a movie titled "Wrath" released in 2021). : The file extension for the Roshal Archive
: This specific file represents one middle segment of that sequence. To successfully extract the original movie, you must have every single part in the series. If Part 23 is missing or corrupt, the extraction process will fail, and the video file cannot be reconstructed. File Naming Break-down such as Matroska (.mkv)