To help users search all the world's public videos, 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.

Read in detail with example at-
http://googlewebmastercentral.blogsp...-sitemaps.html