WEBRip indicates the video was captured or "ripped" from a streaming service (like Prime Video or Apple TV).
Because .mkv files are complex, standard players like Windows Media Player may sometimes struggle with them. Use these highly compatible, free media players: To.Leslie.2022.1080p.WEBRip.mkv
A modern, sleek player specifically designed for macOS. 3. Managing Subtitles and Audio WEBRip indicates the video was captured or "ripped"