164c7868982a88e149e26df21cf5f901.mp4

: Platforms like WhatsApp, Discord, or Facebook often rename files using hashes (alphanumeric strings) for internal indexing.

Since the file uses the .mp4 extension, it follows the standard, which is the most widely used multimedia container today.

The filename appears to be a unique identifier, likely an MD5 hash used by a specific system to name and track video content. While there is no public record of a specific viral video associated with this exact hash, filenames of this type are common in automated systems, such as:

: Forensic or security databases use these strings to verify that a file has not been altered.

: Tools like Paperguide or Napkin AI that generate video presentations from research papers may use such identifiers. Overview of the MP4 Format