Youtube Video Downloader is an easy-to-use tool for downloading streaming videos and converting them in various formats including MP4, 3GP, 3G2, AVI, WMV, VOB, MPEG1, MPEG2 or MP3 so that they can be played back on mobile devices (iPhone, MP3 player, PSP, etc.).
You need to type the URL of your video into the corresponding tab of the software, specify the output format and the target folder, to then click on Download to start the process. Via the interface, you can see the download progress and change your bandwidth speed.
Free trial version is available for 10 days, and the license costs $29,99.