If you need to download or view a video with a generic name from the internet, follow these steps: MP4 files explained: How to open and use - Adobe
If you have encountered this file as a download link from an unknown source, you should exercise caution. While standard MP4 files are not executable and generally cannot "run" a virus themselves, they can still pose security risks in specific scenarios:
: The file extension, representing a standard MPEG-4 video container. Safety and Downloading Risks