The filename follows a naming convention typically used by mobile devices (such as Android phones or certain camera apps) to record the date and time of a video. Breakdown of the Filename

Knowing if it was on a personal device or an external website can help identify its origin.

: Likely the timestamp when the recording started (11:53:58 AM).

: If you already have the file, you can check its "Properties" or "Get Info" to see the "Media Created" date, which will confirm exactly when it was filmed.