Justafilefhlehqiluqmp4

: A video file ( .mp4 ) that contains hidden data within its metadata or pixel values.

Many online mysteries (such as Cicada 3301 or Unfavorable Semicircle ) use intentionally garbled filenames. JUSTaFiLefhlehqiluqmp4

It likely uses a simple substitution (like Caesar or Vigenère) or is a Base64 fragment. : A video file (