Use a tool like ExifTool to see if the file contains original timestamps, location data, or the software used to create it.
Take a screenshot of a key frame and upload it to Google Lens or TinEye . 0hbotf1k4edmy5ecwceg6_720p.mp4
Unknown MP4 files can occasionally contain exploits or "pixel bombs" designed to crash specific media players. Use a tool like ExifTool to see if