From GreenTree Applications:
YTD allows you to download videos from YouTube, including HD and HQ videos, Facebook, Vevo, and dozens of other video sites and convert them to other video formats. The program is easy to use--just specify the URL for the video you want to download and click the Download button. YTD also allows you to convert downloaded videos for iPod, iPhone, PSP, Cell Phone, Windows Media, XVid and MP3, or play video that you have previously downloaded or converted.
The YTD interface includes a tabbed format for easy downloading, converting, and playing, and a new Activity tab allows you to keep track of multiple downloads and conversions in real time. YTD has the ability to download full playlists as opposed to just one video. YTD is available in English, French, Romanian and Russian. A premium version ($19.90) will unlock enhanced features such as faster download times or multiple concurrent downloads.
What's new in this version:
Version 3.1 fixed some video download issues which were causing a failed download status. You can now download from bbc.co.uk and additional sites.