Indicates that the content was sourced directly from a streaming platform, preserving high original quality without the compression artifacts found in "WEB-RIPs."
Indicates the exact production or digital broadcast year of the content asset. Distribution / Source
To understand why files labeled like this are highly sought after by archivers and consumers alike, it helps to understand the technical synergy between source material and x264 encoding: WEB-DL Standard x264 Compression Feature Source Integrity