"Thanks to all the love and support from many of you all over the world. Every one of you has been more meaningful today," wrote Meghan and Prince Harry in the Instagram post.
The clip has black-and-white images showing Prince Harry walking down a flight of stairs to his Prince William's brother. There are also soft shots of Meghan who led down the hallway of Prince Charles, and his smiling and holding hands to his mother Doria Ragland.
The Palace said in the post, "Happy anniversary anniversary at their Royal Highnesses, The Duke and Duchess of Sussex!"
"The selected song" This Little Light of Mine "was chosen of couples for their sake. We hope this momentous moment is hopeful, and see some pictures in the scenes from this special day, "added.
The first year of marriage is a whirlwind. The trailblazing marriage experienced a passionate Chicago preacher, an influential gospel choir and the first black who won a prestigious British music prize to perform at the event.
In a remarkable image,, followed by his 10 bridesmaids and man pages.
Harry and Meghan then moved to a house within the Kensington Palace area of London to Frogmore Cottage in the estate of Windsor – before the birth of their son Archie Harrison Mountbatten- Windsor this May.
The Dussess of Sussex was also eased in his new role, in his appointment as Vice President of Queen's Commonwealth Trust charity.
CNN's Laura Smith Spark, Max Foster and Sheena Mckenzie contributed to this report.