: This indicates that the file is part 3 of a series. To successfully extract the original contents, you must also have the preceding parts, such as VID2016.7z.001 and VID2016.7z.002 , and potentially subsequent parts if the archive is even larger. How to Open and Combine the Parts
: Use the built-in Archive Utility or a third-party app like The Unarchiver to open the .001 file. VID2016.7z.003
: Right-click the .001 file. If you have 7-Zip or WinZip installed, select "Extract Here" or "Extract to [Folder Name]" . The software will automatically detect and "stitch together" all the numbered parts. : This indicates that the file is part 3 of a series