Vid1-9zip -

: You can use the 9zip app mentioned in your query, or standard alternatives like 7-Zip or WinZip .

: Ensure all numbered parts (e.g., part1 , part2 or .z01 , .z02 ) are in the same folder . VID1-9zip

If you have a file or a set of files with these labels, they are likely parts of a larger video file that was "split" to meet upload size limits. To open them: : You can use the 9zip app mentioned

: This is a specific file compression app for Windows 10 that creates .zip archives and extracts formats like .rar , .7z , and .tar . part2 or .z01