The video is from The Heritage Foundation that published the following on YouTube:
Published on Oct 7, 2012 by HeritageFoundationAn Incriminating Timeline: New evidence shows there were security threats in Benghazi, Libya, in the months prior to the deadly September 11, 2012, attack that killed U.S. Ambassador Christopher Stevens and three other Americans. Despite these threats, the Obama Administration and State Department left its personnel there to fend for themselves
From the Washington Post:
The conservative Heritage Foundation is continuing to be a leading force against what it considers to be a cover-up within the Obama administration of the death of Ambassador J. Christopher Stevens and three other Americans at the U.S. Consulate in the Libyan city of Benghazi last month.