Do you have about where you found this file or what it contains?
: If the file won't open, use VLC Media Player , which supports almost all codecs and can often play slightly corrupted files. 3. Finding the Origin (Metadata) 20201205_200806.mp4
: The file extension, indicating it is an MPEG-4 video container . 2. How to Open and View the File Most modern devices can play .mp4 files natively. Do you have about where you found this