VLC Media Player is often the best choice if you are having trouble with specific codecs.
If this was found in a downloads folder or a shared drive, it may simply be an automated filename from a screen recording tool or a video converter that hadn't been manually renamed. g371_001.mp4
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 . VLC Media Player is often the best choice
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. You can open it with: Windows: Windows Media
If you are seeing this filename, it is likely one of the following:
