If you downloaded this file from a random website, email attachment, or peer-to-peer network, do not open it yet. Run it through a reliable antivirus program or an online scanner like VirusTotal to ensure it is not a virus masquerading as a video file.
Use a trusted, sandboxed media player like VLC Media Player to open the file. VLC supports nearly every video codec and reduces the risk of malicious scripts running if the file was downloaded from an untrusted source. MXGS-1268.mp4
Right-click the file on a Windows PC and select "Properties", or press Command + I on a Mac. This will often show you the date the video was captured or modified, as well as the camera or software used to create it. If you downloaded this file from a random
If you found this file on your hard drive, an old backup, or an SD card and do not remember what it is, you can identify its contents by following these steps: VLC supports nearly every video codec and reduces