Without more context or the ability to view the file, it is impossible to determine the visual content. If you found this file on a device or received it via message, it is likely a personal or automatically generated recording.
This specific naming convention—starting with double underscores followed by a mix of letters and numbers—is typical of:
: Many security cameras (CCTV), dashcams, and bodycams use alphanumeric strings to catalog clips by date or device ID.
: Some messaging apps or video editing software generate temporary file names like this while downloading or rendering content.