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A "hijacked video" is often a bait-and-switch meme where a normal video abruptly cuts to unexpected footage (e.g., loud noises, "screamer" jump scares, or Rickrolling).

The specific file naming convention (Video.mp4) is frequently used in "Lost Media" or Analog Horror stories where a user "finds" a mysterious or cursed file.

The term appears to be a composite of niche internet subcultures. While "Grandmaster Troll" is a common label for high-level online agitators—often seen in communities like Kongai Wiki or used to describe competitive chess players like Magnus Carlsen—the specific ".mp4" filename format typically points to one of the following: