Well you can find it all over the internet if you search, here is one example ;
http://www.hollywoodreporter.com/liv...nation-1022957
Quote:
The new series, which will feature 10-minute episodes, will follow fan-favorite character Catherine Langford (originally played by Elizabeth Hoffman) and explore a new chapter in her early history surrounding the portal. Young Catherine embarks on a new unexpected adventure to unlock the mystery of what lies beyond the Stargate in order to save the Earth from darkness. (Watch the teaser trailer, below.)
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Put them all together and you have a 1 hour 40 min movie.
(Probably a bit less due to overlap etc).