While a standard .mp4 typically does not contain executable code, it is best to use a reliable player like VLC Media Player or the default players in Windows or macOS.
Could you provide on where you found this file or what happened when you watched it? This will help me give you a more specific guide. Cannot upload video file - mp4 - E-Learning Heroes 29082020b.mp4
Before interacting with a suspicious or mysterious file, ensure your system is secure. While a standard
If you are stuck, these communities often track and solve these types of mysteries: 29082020b.mp4