Poradite jak na to? V repozitarich je velmi stara verze, jak dostat nejnovejsi youtube-dl do Debianu Jessie?
https://rg3.github.io/youtube-dl/download.html
CitaceTo install it right away for all UNIX users (Linux, OS X, etc.), type:
sudo curl -L https://yt-dl.org/downloads/latest/youtube-dl -o /usr/local/bin/youtube-dl
sudo chmod a+rx /usr/local/bin/youtube-dl
If you do not have curl, you can alternatively use a recent wget:
sudo wget https://yt-dl.org/downloads/latest/youtube-dl -O /usr/local/bin/youtube-dl
sudo chmod a+rx /usr/local/bin/youtube-dl