This naming convention is common for files saved from Discord or recorded on Android devices, where the filename reflects the exact millisecond of creation or download. How to Access the Write-up Details
Right-click the file and select Get Info to see the "More Info" section.
Do you have a of what happens in the video, or would you like help extracting the technical specs to include in your write-up? A Quick Dive Into MP4 - DEV Community