This stands for Web Download . It means the file was legally captured from a streaming service (like Netflix or HBO Max) without being re-encoded, typically offering better quality than a "WebRip".

The name of the specific release group or individual that prepared this version of the file. How to Play This File

If you prefer using the built-in Windows Media Player (2022) , you may need to install the K-Lite Codec Pack to add XviD support. How to Play AVI Files on Windows 10 & 11 - JustAnswer

Because it is an .avi file using the XviD codec, some modern built-in players may struggle to open it without additional software.

An older video codec commonly used for .avi files to maintain a balance between file size and quality.