Expect this file to be exceptionally small . For a typical 20-minute video at these settings, the file size could easily be under 50MB while remaining "watchable".
Are you trying to playback for this specific file, or were you looking for its content details? What Are AV1 Files? - Codec - Adobe AZWLoLand266 67 Av1 360p mp4
However, based on the technical specifications provided in your query, here is a technical review of what that format typically offers: 🎞️ Technical Overview Expect this file to be exceptionally small