However, if you’re downloading the videos for your personal usage and not planning to use it as your personal work, then you might download them.
If you want to share some videos you like, you should probably consider the sharing options from Google rather than re-uploading as your work. If you closely look at the YouTube Terms of Service, you’ll see a phrase “You shall not download any Content unless you see a “download” or similar link displayed by YouTube on the Service for that Content.” So, it’s legally a no-no to download YouTube videos unless it is marked for download. While most of the people go on with downloading YouTube videos, only a few people care to think if it’s legal or not. “How to Download YouTube Videos” is one of the most popular search terms in Google and other search engines.
