All content of this video is U.S. government works and in the public domain.

United States Constitution, Article II, Section 1, Clause 8:
Before [the President] enter on the Execution of his Office, he shall take the following Oath or Affirmation:
"I do solemnly swear (or affirm) that I will faithfully execute the Office of President of the United States, and will to the best of my Ability to preserve, protect and defend the Constitution of the United States."
https://en.wikipedia.org/wiki/Oath_of_office_of_the_President_of_the_United_States

00:00 Governor Franklin D. Roosevelt; Elected 8 November 1932; East Portico, U.S. Capitol; Chief Justice Charles E. Hughes; 4 March 1933
00:25 President Franklin D. Roosevelt; Re-elected 3 November 1936; East Portico, U.S. Capitol; Chief Justice Charles E. Hughes; 20 January 1937
00:56 President Franklin D. Roosevelt; Re-elected 5 November 1940; East Portico, U.S. Capitol; Chief Justice Harlan F. Stone; 20 January 1941
01:29 President Franklin D. Roosevelt; Re-elected 7 November 1944; South Portico, White House; Chief Justice Charles E. Hughes; 20 January 1945
01:58 Vice-President Harry S. Truman; On the death of President Franklin D. Roosevelt; Cabinet Room, White House; Chief Justice Harlan F. Stone; 12 April 1945
02:18 President Harry S. Truman; Re-elected 2 November 1948; East Portico, U.S. Capitol; Chief Justice Frederick M. Vinson; 20 January 1949
03:06 General Dwight D. Eisenhower; Elected 4 November 1952; East Portico, U.S. Capitol; Chief Justice Frederick M. Vinson; 20 January 1953
04:02 President Dwight D. Eisenhower; Re-elected 6 November 1956; East Room, White House; Chief Justice Earl Warren; 20 January 1957
04:10 President Dwight D. Eisenhower; Repeated publicly as 20 January 1957 was a Sunday; East Portico, U.S. Capitol; Chief Justice Earl Warren; 21 January 1957
04:50 Senator John F. Kennedy; Elected 8 November 1960; East Portico, U.S. Capitol; Chief Justice Earl Warren; 20 January 1961
05:40 Vice-President Lyndon B. Johnson; On the death of President John F. Kennedy; Conference room on Air Force One, Love Field, Dallas, Texas; Judge Sarah T. Hughes; 22 November 1963
06:17 President Lyndon B. Johnson; Re-elected 3 November 1964; East Portico, U.S. Capitol; Chief Justice Earl Warren; 20 January 1965
07:11 Vice-President Richard M. Nixon; Elected 5 November 1968; East Portico, U.S. Capitol; Chief Justice Earl Warren; 20 January 1969
08:05 President Richard M. Nixon; Re-elected 7 November 1972; East Portico, U.S. Capitol; Chief Justice Warren E. Burger; 20 January 1973
09:00 Vice-President Gerald R. Ford; On the resignation of President Richard M. Nixon; East Room, White House; Chief Justice Warren E. Burger; 9 August 1974
09:51 Governor James E. Carter; Elected 2 November 1976; East Portico, U.S. Capitol; Chief Justice Warren E. Burger; 20 January 1977
10:46 Governor Ronald W. Reagan; Elected 4 November 1980; West Front, U.S. Capitol; Chief Justice Warren E. Burger; 20 January 1981
11:38 President Ronald W. Reagan; Re-elected 6 November 1984; Entrance Hall, White House; Chief Justice Warren E. Burger; 20 January 1985
12:20 President Ronald W. Reagan; Repeated publicly as 20 January 1985 was a Sunday; United States Capitol Rotunda; Chief Justice Warren E. Burger; 21 January 1985
13:10 Vice-President George H. W. Bush; Elected 8 November 1988; West Front, U.S. Capitol; Chief Justice William Rehnquist; 20 January 1989
14:00 Governor William J. Clinton; Elected 3 November 1992; West Front, U.S. Capitol; Chief Justice William Rehnquist; 20 January 1993
14:58 President William J. Clinton; Re-elected 5 November 1996; West Front, U.S. Capitol; Chief Justice William Rehnquist; 20 January 1997
15:55 Governor George W. Bush; Elected 7 November 2000; West Front, U.S. Capitol; Chief Justice William Rehnquist; 20 January 2001
16:41 President George W. Bush; Re-elected 2 November 2004; West Front, U.S. Capitol; Chief Justice William Rehnquist; 20 January 2005
17:28 Senator Barack H. Obama; Elected 4 November 2008; West Front, U.S. Capitol; Chief Justice John G. Roberts; 20 January 2009
18:21 President Barack H. Obama; Repeated to resolve mistake from previous day; Map Room, White House; Chief Justice John G. Roberts; 21 January 2009
18:52 President Barack H. Obama; Re-elected 6 November 2012; Blue Room, White House; Chief Justice John G. Roberts; 20 January 2013
19:32 President Barack H. Obama; Repeated publicly as 20 January 2013 was a Sunday; West Front, U.S. Capitol; Chief Justice John G. Roberts; 21 January 2013
20:22 Mr. Donald J. Trump; Elected 8 November 2016; West Front, U.S. Capitol; Chief Justice John G. Roberts; 20 January 2017
21:18 Vice-President Joseph R. Biden; Elected 3 November 2020; West Front, U.S. Capitol; Chief Justice John G. Roberts; 20 January 2021

All the content of this video is work of the U.S. federal government, and therefore in the public domain under section 105 of the Copyright Act:
https://www.law.cornell.edu/uscode/text/17/105