Webcam Preview / Streaming
http://social.msdn.microsoft.com/forums/en-US/wpf/thread/f6dc3964-7eb8-445a-889f-103b1556a735/
DirectShowNet Library
http://directshownet.sourceforge.net/
在wpf中使用DirectShow
http://blog.sina.com.cn/s/blog_4b1558c4010006r2.html
MediaElement & DirectShow
http://wiki.medialooks.com/MediaElement_%26_DirectShow
videorendererelement
http://videorendererelement.codeplex.com/SourceControl/list/changesets