Herself's Webtools

. . . the Google Video team joined the Sitemaps folks to introduce Video Sitemaps—an extension of the Sitemap Protocol that helps make your videos more searchable via Google Video Search. By submitting this video-specific Sitemap in addition to your standard Sitemap, you can specify all the video files on your site, along with relevant metadata. Here’s an example:
  xmlns:video=”http://www.google.com/schemas/sitemap-video/1.0″>

http://www.example.com/videos/some_video_landing_page.html

http://www.example.com/video123.flv
http://www.example.com/videoplayer.swf?video=123
My funny video
http://www.example.com/thumbs/123.jpg

[ more information Google Webmaster Blog]

Just as using sitemaps for your html pages makes it easier for search engines to find and catalog your site, video sitemaps will help to sort through zillions of online videos. Especially since sitemaps for videos are new, get yours done and get a jump start on the other websites.