To provide a more detailed "write-up" on the actual content, I would need to know the of the video or the platform where you found it.
: Many DVR/NVR systems (like Hikvision or Dahua) export files using this naming convention (ID + Date).
The numeric string 1678315285 is a , which reveals the exact moment the file was created or saved: Thursday, March 9, 2023, at 12:01:25 AM (UTC) . Breakdown of the Filename
: If you downloaded this from a service like Google Photos or iCloud, the service may have appended the timestamp to avoid duplicate filenames.