Many CCTV and dashcam systems auto-generate sequential filenames (e.g., 10101, 10102).
Occasionally, creators of Alternate Reality Games or "analog horror" series use raw-looking filenames to add a sense of realism or mystery. Drafting Options 10102.mp4
Since the specific content is unclear, here are two ways you can frame an "MP4" write-up depending on what you’re looking for: 10102.mp4
I can help you dig deeper into its origins if it's part of a specific community or series. 10102.mp4