Open the file in VLC Media Player , which can handle corrupted or oddly formatted MP4s more safely than default system players.
Could you provide on where you found this file or what you expect to see in the video so I can help you identify it further? 10500503.mp4
Many CCTV and NVR (Network Video Recorder) systems use long numeric strings representing a combination of the date, time, and camera ID (e.g., YYYYMMDD or a Unix timestamp). Open the file in VLC Media Player ,