"This file is an encoded copy of a publicly distributed web release. The user assumes all responsibility for compliance with copyright laws in their jurisdiction. Unauthorized redistribution may violate terms of service."
: Refers to the audio channel. In this context, it likely means 2-channel audio, which usually implies stereo sound. Kuwari.Kanya.S01EP01.720p.HEVC.WeB-DL.HINDI.2CH...