I use "Open Video Downloader". It will not add the cover.jpg but otherwise it works great.
MrGrackle
I tried telling people before there are at least 10, more likely 100, YouTube downloaders, people can even google free GUI YouTube downloaders.
The only reason to buy SF for YouTube, back when SF worked, was getting the DRM video from YouTube Movies & TV section.
I have a YouTube downloader that downloads most times so fast I barely can count the time it's so fast wish I could talk the people into supporting DRM from YouTube, but wishing is meaningless.
Why the DRM has gone unfixed in SF from 6202 on has not been explained. 6200 & 6201 stopped working, on YouTube, because of the old browser interface.
ALSO, again for some no reason given people still refuse to save the older installers to SF, so I guess some can't go back if they updated to 6209, I have both 6208 and 6209 on my system. Unless they get the extended download service.