really?
so all the worlds oceans of browser extensions for downloading youtube vids are illegal?
That appears a misleading question.. Accessing content via their embedded player is significantly different from downloading content. Their service is provided to access and view the content, not to download it unless that feature is provided as specified in 'TOS Section 5 subpart B' which allows for the downloading of video ONLY and specifically if a "download link" is provided for that content, I believe a download link would be a rare case scenario. Otherwise downloading of content is definitely prohibited.
My interpretation of section 4 subpart C goes further.., in as much as viewing their content in a player other than their provided service or their provided embedded player, or unless authorized is also prohibited..
It seems to me, again it's just my interpretation; we may use a browser to view content directly from their service, or via their embedded player, or unless designated otherwise not at all..
It would be to our benefit to find the list of approved alternate designated technology to view content, so far I can't find that list..
Just saying....