: Is the video mostly static or high-pitched noise? That is a primary indicator that the "guide" is hidden in the audio spectrogram.
: Where did you encounter this file? (e.g., a Discord server, a specific YouTube description, or a mystery website). NM18.mp4
: Look for frame-by-frame changes. ARGs often hide text or QR codes in single frames that are invisible at normal playback speeds. : Is the video mostly static or high-pitched noise