The Archiving feature (Project Menu) in Kdenlive allows you to copy all files required by the project (images, video clips, project files,…) to a folder, and alternatively to compress the whole into a tar.gz or a zip file., see
Archiving changes the project file to update the path of video clips to the archived versions.
This can be useful if you finished working on a project and want to keep a copy of it, or if you want to move a project from one computer to another.
The resulting tar.gz or zip file can be opened directly in Kdenlive with Archived Project., then switch file ending to
Kdenlive will uncompress it to a location you specify before opening it.