The above video is brief overview of sedevacantism, for more detailed information please see the 3 video's below..
The basic definition of the term "SedeVacantism" presented by Rev. Fr. William Jenkins SSPV
Rt. Rev. Bishop Donald Sanborn looks at the root of Vatican II, discusses various forms of reaction, and demonstrates how SedeVacantism is the only viable Catholic position to the problem of Vatican II. He then goes on to answer objections to SedeVacantism, speaking about opinionism and finally the Una-Cum-Mass.
Rev. Fr. Anthony Cedaka tells his story from 1960's Minor Seminary, to Novus Ordo Conservitive Religious to Archbishop Lefebvre's SSPX Seminary, and finally how he ended up as a SedeVacantist.