: The file extension for Matroska Video , a popular open-standard container format that can hold unlimited video, audio, picture, or subtitle tracks in one file. Potential Contexts
: Likely an abbreviation for a specific program, organization, or "release group." While it can refer to historical entities (like the early call sign for WXIN ), in this context, it is most likely a unique identifier for a specific broadcast or series. wsmk-07oct22-480p-mkv
While "WSMK" is used in technical SCSI documentation to mean "Write Setmark", its appearance in a filename with a date and resolution usually points to: : The file extension for Matroska Video ,