You can use youtube-dl, while in adownloader i havent check all the issues that can go on, but in fact it works for urls like
https://www.youtube.com/playlist?lis...XOLG2LciSSqZvD
only if they dont include vevo videos cause i get the links from vevo if availables.
I've tried to merge all the videos in a list if they are parts but that's experimental. If you try adownloader with lists choose no when it asks you if you want "ensamblar".
Also update from mediafire.