(e.g., in a news article, a specific social media thread, or your own files?)
The filename appears to be a unique identifier (UUID) generated by a device, such as an iPhone or a digital camera, rather than a known public video with an established "write-up." DC1B5E63-CD76-494E-B1E6-72BF1129E413.MP4
To help me give you the information you're looking for, could you clarify: in a news article
(e.g., a specific event, a tutorial, or a viral clip?) Which platform or website did you find this file on? a specific social media thread
Because this name is specific to a single file on a particular device or cloud storage account, there is no public information or "write-up" available for it. These filenames are typically created automatically to ensure that no two files have the same name.