You have to pay for it before you can download. 7055360: Downloading lecture JSONĮRROR: Course 10543 is not free. playlist 1169378: Collected 84 video ids (downloading 84 of them) Python version 3.4.4 (CPython) - Windows-10-1 Encodings: locale cp1252, fs mbcs, out cp850, pref cp1252 C:\Users\name\Downloads>youtube-dl -v -write-sub -sub-lang en -cookies cookies.txt -f best -o '%(playlist)s/%(chapter_number)s.