From APA Guide, page 215, example 77: Video Blog Post.
Author or Producer Last Name, First Name. (Year, Month Date). Title of the video [Video file]. Retrieved from http://-list the entire website-
UMLKnowHow. (2010, September 17). Reference citations [Video file]. Retrieved from http://www.youtube.com/watch?v=HNlyshFhn5Q
The in-text citation for APA would depend on the number of authors, but primarily is the author's name and the year.
Wikipedia can often be considered somewhat of a news source. If you have decided to look at how an issue is being treated in Wikipedia you do have to cite the entry. Here is a page that explains how to cite Wikipedia.