1_(2).mp4

Because this is a placeholder name, the "content" could be anything from a personal video recording to a downloaded social media clip or an automated export from video editing software. To find out what is actually inside the file, you can try:

the file and selecting Properties (Windows) or Get Info (Mac) to see the file size, creation date, and origin. 1_(2).mp4

: A suffix added by operating systems like Windows or macOS when you save a file into a folder that already contains a file named "1.mp4". Because this is a placeholder name, the "content"