Video Sitemap updates are just hitting the market for this year. Google did not broadcast the changes. Yet if you regularly check on your sites within the the Google webmaster tool area, you will have notice a significant change in layout. Another surprising change has to do with how Google analyzes video sitemaps.
In the past it was acceptable to have the same video on a page and in a post. This was how many marketers conduct their video marketing. Now any duplication of videos anywhere on your site will throw a duplicate content warning from Google. This is not a good thing if you want to rank well in the Google index.
Duplicate content within the Google index is like the kiss of death for a site. If you have not taken a look at your video sitemap in a while or have not tested your map through Google’s webmaster tools, then you may want to take a look as soon as you can.
Even if you are not submitting your maps to Google, they will eventually find the videos on your site and penalize you for not taking care of it.
Check out the Google webmaster tools here.
Check out Google’s blog here.