Google support ‘Facebook Share and SearchMonkey RDFa’ markup for video indexing

To improve video indexing, Google Webmaster added support for Facebook Share and Yahoo! SearchMonkey RDFa markup format to let you specify information such as video's title and description, within the HTML of a video page. Note: you should make sure it appears in the HTML without the execution of JavaScript or Flash.

Facebook Share and Yahoo! SearchMonkey RDFa