If you found this in a temporary folder, it may be a cached version of a video you previously viewed on a social media platform. How to View or Identify the Content

If the file won't open in your default player, the VLC Media Player is a reliable, free tool that can handle almost any MP4 codec.

Long numerical strings are frequently used by surveillance systems or dashcams to timestamp or serialize video clips.

The naming convention, particularly the addition of (1) , often occurs when you download the same file multiple times to your device, with your computer or phone automatically numbering the copies.