It is hosted on veoh so it has the five minute preview but you can watch the episode in its entirety if you have veoh TV. There are five episodes. It isn't a movie, but rather a mini-series.

http://imdb.com/title/tt0974077/

episodes 1 to 5
http://www.veoh.com/channels/cranford&

alternate links to the veoh links are here
http://www.youtube.com/profile?user=booklover181

episodes 1-5 are in that link