G9640.mp4 -

You can typically open this file using VLC Media Player or standard OS video apps.

If you found this file unexpectedly, consider the following safety precautions: Converting video files to ASF or MP4 format - User guides g9640.mp4

The "9640" part is typically a sequential ID assigned by the camera or the system during recording or export. Technical Properties of MP4 You can typically open this file using VLC

Even after conversion, the file may still contain EXIF data or internal atoms (like moof atoms) that provide forensic details about the camera model or recording time. Security Assessment g9640.mp4