Originally posted by http://stargate.wikia.com:

Stargate Origins is the upcoming fourth live-action series of the Stargate franchise, set for a February 2018 release exclusively on MGM's new digital platform, "Stargate Command".

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Stargate Origins will serve as a prequel to Stargate SG-1 and will explore the backstory of Dr. Catherine Langford, the daughter of Professor Langford - the man who discovered the Stargate in Giza, Egypt in 1928, as depicted in the 1994 feature film Stargate. The events of the series will take place 10 years after the discovery of the gate.

The series will consist of 10 episodes, each 10 minutes in length, essentially a 10-episode feature length movie, and will expand upon the existing mythology of the Stargate franchise.