http://www.macnn.com/articles/09/09/23/youtube.converter.for.mac.update/
YouTube Converter for Mac now with Snow Leopard support
updated 02:15 am EDT, Wed September 23, 2009
YouTube Converter for Mac update
Pavtube has released a newer version of its YouTube Converter for Mac 1.0, adding Snow Leopard compatibility. The application is designed to convert YouTube videos to a wide arrange of video formats including MP4, M4A, MOV, or WAV, enabling them to be played on mobile devices such as the iPhone, iPod, Apple TV or Quick Time Player. The program also doubles as a video downloader, supporting batch downloading, along with converting multiple video files simultaneously.
YouTube Converter for Mac includes various customizable settings which allow users to adjust the codec, size, bitrate and framerate.
The app is compatible with Mac OS X 10.4 or higher and available directly from the company’s website for $35.
Fresh-Faced Recruit
Joined: Sep 2009
it is not free
I prefer to free youtube downloader, I always use a totally free online video downloader/converter for Mac. if you want a try too, here:
http://www.flash-video-soft.com/mac-youtube-downloader/