If you want to create a new single archive from the assembled folder:
A typical Mega folder link looks like this: https://mega.nz/folder/AbC12dEf#LmnOpQrStUvWxYz1234567 mega cp folder repack
If a folder labeled "Mega CP Folder Repack – Movies" contains a file named movie.avi.exe , it is malware. Real repacks of media will use .mkv , .mp4 , or .7z . If you want to create a new single