According to their website, "Court Shorts: Separation of Powers is being released in conjunction with Bill of Rights Day, Dec. 15, the day in 1791 that the first 10 amendments to the Constitution were ratified. As the video illustrates, all three branches play a role in preserving constitutional liberties."
Learn more about the video, and the Court Shorts educational series, with the U.S. Court's blog post on Judges: Separation of Powers Protects Bill of Rights.