Stands for "Web Download." This means the file was losslessly ripped directly from a streaming service (Ullu), offering better quality than a "WebRip."

The specific string "S01 Hindi Ullu WEBDL H264 AAC 720p" refers to the technical quality of the release: : Refers to Season 1 of the series. Hindi : The primary language of the show [2].

: This refers to the video codec used for encoding the video. H.264 is a widely used codec that provides a good balance between video quality and file size.

: The original streaming platform that produced and hosted the content [2, 3].