If you are seeing this filename, it is likely one of the following:
Many DVR and NVR systems (like those from Lorex or Swann) use alphanumeric prefixes like "g" followed by a channel number and sequence to name exported clips. g371_001.mp4
Could you clarify ? Knowing if it's from a specific website, a security system, or an old hard drive would help identify its exact origin. How to play MP4 files in Windows - Microsoft Support If you are seeing this filename, it is
Since it is an MP4 file , it is a standard digital multimedia container. You can open it with: Windows: Windows Media Player or Movies & TV . Mac: QuickTime Player . How to play MP4 files in Windows -
"g371_001.mp4" appears to be a specific file name rather than a widely recognized piece of media or a viral internet phenomenon. In a general context, it follows a standard often used by digital cameras, security systems, or video editing software.