This looks like a metadata tag for a digital copy of , Season 1, Episode 4, titled "The Great Wave."
Since this is an .mkv file, it works best with versatile media players like or IINA . These apps allow you to easily switch the audio tracks and subtitles via the "Audio" and "Subtitle" top menus.
This is High Definition (HD) sourced from Amazon Prime Video. It’s a great balance between clear visuals and a manageable file size.