Video0001[1]: Mp4

: Default capture tools on Windows or generic webcam utilities often start their numbering at 0001. How to Open or Identify the Content

: The bracketed number typically indicates a duplicate . This happens when you download or move a file into a folder that already contains a file with the exact same name (e.g., "VIDEO0001.mp4"). VIDEO0001[1] mp4

: Many "no-name" or generic cameras use this exact sequence. : Default capture tools on Windows or generic

: Certain third-party camera apps on smartphones use "VIDEO" followed by a four-digit sequence. VIDEO0001[1] mp4