Youtube provides various videos for you to watch online. You are only to be watcher and give comment for video that you watched. You can't download the videos from youtube because exactly they not providing videos for downloading.
There are many ways to download videos from Youtube easily and fastly, you can use downloader software or some sites for helping you to download videos from youtube. This some ways that i wrote to Download videos from Youtube easily and Fastly from me. I ‘ve did it always. Its work!