42523(1).mp4 Official

: Systems that timestamp or index clips numerically.

: Files saved from messaging apps like WhatsApp or Telegram. 42523(1).mp4

Since this appears to be a private file or a specific clip from your local storage, I can't see its content. If this is a video you've seen and you're looking for the story behind it, could you describe or where you found it ? : Systems that timestamp or index clips numerically

This naming convention—a string of numbers followed by a version indicator in parentheses—is typical for: 42523(1).mp4