backport some youtube-dl changes (closes #1422)
backport some youtube-dl changes (closes #1422)

laurent-george/weboob,frankrousseau/weboob,willprice/weboob,sputnick-dev/weboob,RouxRC/weboob,laurent-george/weboob,willprice/weboob,RouxRC/weboob,RouxRC/weboob,sputnick-dev/weboob,Konubinix/weboob,nojhan/weboob-devel,frankrousseau/weboob,Konubinix/weboob,frankrousseau/weboob,laurent-george/weboob,willprice/weboob,nojhan/weboob-devel,nojhan/weboob-devel,sputnick-dev/weboob,Konubinix/weboob