That is impossible. Youtube videos stay on youtube unless you download.
GifSoup.com or VIPGIF.com
[100% WORKING] Easily Download Youtube Videos Without Using Any Software. http://www.topfurtive.co.cc/2012/06/download-youtube-videos-without-use-of.html
you can download videos from youtube by downloading real player then going on its internal internet then going on youtube and downloading it.
Downloading Videos from Youtube
One of the best Android apps for downloading YouTube HD videos is Tube Mate. You can download it from Tubemate.com.
YouTube Downloader.you can Google it.
The Programa Para Bajar videos are about downloading videos without adding software to a computer in order to accomplish it directed at a Spanish audience.
There is no download option on YouTube, but there are methods of downloading videos from YouTube using other websites or external programs. If you want to download it with out installing any programs use file2hd.com or you can install YouTube Downloader (just search for YouTube Downloader on Google and use the link from CNET.com)
To download the African dance videos for free, simply copy the URLs of the videos and enter them in a third party video downloading application. This can include YouTube Downloader, or other popular downloading programs. You can also download video downloading add-ons for your browser, which allows you to download and convert these videos for free.
No. You have to download the YouTube video to your computer, and convert it for use in Windows Movie Maker before it can be edited in the program.
If by downloading you mean watching them online, then yes, its legal. If by downloading you mean making your own copy, then probably not.