Video sitemaps

[Arya-Aghaei]

Based on what Google defines in Video sitemaps , There are some xml tags should be added to sitemaps for videos, and it should be like this:

<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9" xmlns:video="http://www.google.com/schemas/sitemap-video/1.1"> <url> <loc>http://www.example.com/videos/some_video_landing_page.html</loc> <video:video> <video:thumbnail_loc>http://www.example.com/thumbs/123.jpg</video:thumbnail_loc> <video:title>Grilling steaks for summer</video:title> <video:description>Alkis shows you how to get perfectly done steaks every time</video:description> <video:content_loc>http://www.example.com/video123.mp4</video:content_loc> <video:player_loc autoplay="ap=1"> http://www.example.com/videoplayer.mp4?video=123</video:player_loc> <video:duration>600</video:duration> <video:expiration_date>2009-11-05T19:20:30+08:00</video:expiration_date> <video:rating>4.2</video:rating> <video:view_count>12345</video:view_count> <video:publication_date>2007-11-05T19:20:30+08:00</video:publication_date> <video:family_friendly>yes</video:family_friendly> <video:restriction relationship="allow">IE GB US CA</video:restriction> <video:gallery_loc title="Cooking Videos">http://cooking.example.com</video:gallery_loc> <video:price currency="EUR">1.99</video:price> <video:requires_subscription>yes</video:requires_subscription> <video:uploader info="http://www.example.com/users/grillymcgrillerson">GrillyMcGrillerson </video:uploader> <video:live>no</video:live> </video:video> </url> </urlset>

I would like to know how is it possible to add these custom tags dynamically to my sitemap?