: The .mp4 extension indicates a MPEG-4 Part 14 digital multimedia container.

: Right-click the file and select Open with , then choose Windows Media Player or VLC Media Player . Mac : Use QuickTime Player or VLC . Extracting Metadata (The "Hidden" Report)

To understand the origin of this specific file without playing it, you can view its internal metadata:

As this is a specific file, here is a report on what this file format entails and how you can access or analyze its contents: Technical Overview