Feeds allow Bing to easily learn about the videos on your website. The purpose is to help Bing include your video content in the Bing index, which may not have otherwise been discovered by Bing's web content crawlers. Submitting a feed provides you with a higher assurance that your videos will be included in the index in a more complete and timely manner. In addition, the feed can provide Bing with rich descriptions (i.e. metadata) about your videos that can be helpful for better understanding by users.
The Bing Media feed specification is an optimized media RSS (mRSS) feed for inclusion in the Bing Video index. It specifies three types of video feeds : full back-catalog feeds (aka “full feed”), incremental update feeds (aka “incremental feed”), and expire feeds. All three have different purposes, but all share the same structure and format. The Bing mRSS video specification document covers optional and required tags, date/time format, and includes a complete example of a video feed.
Bing can also support other feed or sitemap protocols. Please contact Bing Content Feed Support for inquiries.
Other Feed or Sitemap formats:
Media RSS
Media RSS supplements the enclosure element capabilities of RSS 2.0 to allow for more robust media syndication by handling other media types, such as short films or TV, as well as provide additional metadata with the media
http://www.rssboard.org/media-rss
RSS 2.0 with media enclosures
RSS enclosures is an older standard that specifies how to attach multimedia content to RSS 2.0 feeds by providing the URL of a file associated with syndicated entry. This has largely supplanted by media RSS feeds
http://www.rssboard.org/rss-specification#ltenclosuregtSubelementOfLtitemgt
Yahoo mRSS specification
The Yahoo mRSS specification is similar to Bing’s mRSS and could work on a basic level. However Bing mRSS specification adds several enhancements. For details on the yahoo mRSS see:
http://video.search.yahoo.com/mrss
Google Video Sitemap
Google adheres to Sitemap Protocol 0.9 as defined by sitemaps.org.
For further information or details refer to Google webmaster
http://support.google.com/webmasters/bin/answer.py?hl=en&answer=156184
Baidu Internet video open protocol.
It is an XML based markup format used by Baidu web partners to include video content into the Baidu search index. For further information refer to Baidu Webmaster
http://video.baidu.com/videoop.html
Also with sufficient advanced notice, Bing Video may be able to extend support to a custom feed that conforms a well formatted XLST. Contact Bing Content Feed Support for additional for more information.