The program downloads a lot more than just YouTube videos. On the developer's site, you can find an extensive list of additional supported sites including Facebook and Vimeo.
When you find a video you'd like to download, copy the URL of the video page and open YouTube Downloader. Choose your desired quality and your destination folder, then hit Download. Once your download is finished, hit the Play tab to watch. The Convert tab lets you export to a different file format for playing elsewhere, and gives you a mini editor for making minor alterations before your export. You can change video volume (or remove audio altogether) and splice footage by setting specific start and end times.For online video enthusiasts looking to download non-copyrighted or personally owned videos, YouTube Downloader appears to be a near-perfect tool. Download fron CNet