The number appears in several unrelated contexts that might be linked to why this specific string was used: Potential Origins of the ID Media Article ID : A Daily Mail article
: A user manually added ".mp4" to a file that already had a hidden extension. 6181147.mp4.mp4
: Occasionally, malicious files use double extensions (like .mp4.exe ) to trick users into clicking them, though .mp4.mp4 is more likely a simple technical error. The number appears in several unrelated contexts that
: A video was processed twice by a bot or script that appends the extension each time it runs. 6181147.mp4.mp4