Indicates the file was recorded from a web streaming platform.
A compressed archive format. You would need a program like WinRAR or 7-Zip to "extract" the video files from this container. Why this version?
This specific release is typically sought after by users who have limited storage space or slower internet connections, as a 480p WebRip is much smaller (usually 1GB–1.5GB for the whole season) compared to 1080p versions which can exceed 8GB.