Google Accepting Video Sitemaps
Google will make use of an extension to the Sitemaps protocol to do a better job of indexing the videos people publish.
Indexing text data became old hat to Google and every other search engine over the past few years. Multimedia, especially video, has everyone’s attention these days (including Hollywood screenwriters.)
To enable better video indexing, Google has taken the lead in introducing and accepting Video Sitemaps. "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," said the Webmaster Central blog.
That does imply some extra work for the webmaster, in the need to create a second sitemap for Google to index. One commenter on the blog asked why the video elements can’t just be added to the regular sitemap, since they have their own namespace.
Google’s John Mueller replied, saying it might not be practical, but said he would pass the suggestion along.
It appears Google is acting solo in working with video sitemaps at this time. Other search engines will have to decide whether or not to follow Google’s lead in accepting this extension.