There is no widely verified "shock" or "mystery" video file historically cataloged under the name "teza.mp4" in the same vein as major internet mysteries like The Most Mysterious Song on the Internet or Markovian Parallax Denigrate . If you are referring to a specific video seen on a platform like TikTok or a creepypasta, it is likely:
: A case where a viral video has been renamed by the community or reposters. teza.mp4
: An Alternate Reality Game where the file name serves as a clue or entry point. There is no widely verified "shock" or "mystery"