You can now check your Video Sitemap for even more errors right in Webmaster Tools! It’s a new Labs feature to signal issues in your Video Sitemap such as:
- URLs disallowed by robots.txt
- Thumbnail size errors (160x120px is ideal. Anything smaller than 90×50 will be rejected.)
Video Sitemaps help us to better crawl and extract information about your videos, so we can appropriately feature them in search results.
Totally new to Video Sitemaps? Check out the Video Sitemaps center for more information. Otherwise, take a look at this new Labs feature in Webmaster Tools.