The picture - which shows Prince Harry holding his seven-month-old son, both wrapped up in winter gear - comes right at the end of the video, with text overlaid wishing people a 'Happy New Year'.
Posted on the official Instagram account for The Duke and Duchess of Sussex, the caption for the 'Looking back at 2019...' video included a quote from the new parents, which said: "Wishing you all a very Happy New Year and thanking you for your continued support!
"We've loved meeting so many of you from around the world and can't wait to meet many more of you next year.
"We hope 2020 brings each of you health and continued happiness."
Other moments commemorated in the video included the Duke and Duchess out on royal visits, Harry with Ed Sheeran and the first moment the couple introduced Archie to the world.
But people couldn't get enough of that last photo, with one commenting on Instagram: "What a beautiful recap of the year and one of the best photos of Harry and Archie."
Another added: "What a beautiful picture of HRH with baby Archie."
Harry and Meghan also shared a black and white picture of their son as part of their official annual Christmas card.
Just sharing the sweetest Christmas Card from our President and Vice-President, The Duke and Duchess of Sussex. Very Merry Christmas, everyone! pic.twitter.com/McOcHALoGl
- The Queen's Commonwealth Trust (@queenscomtrust) December 23, 2019
The image showed cheeky Archie crawling towards the camera, while his parents laugh on in the background.
The message read: "Merry Christmas and a happy new year... from our family to yours."
The festive greeting was emailed to friends and colleagues, but hard copies were also sent out to family members.
Archie, who is the couple's first child, was born on Monday 6 May at 5.26am, weighing 7lb 3oz.
When the couple made their first appearance with Archie as a family, Meghan told the world: "He has the sweetest temperament, he's really calm. He's been the dream."
Harry chipped in, joking: "I don't know who he gets that from."
The couple were asked how their first few days as parents had been, to which Meghan responded: "It's magic, it's pretty amazing.
"I have the two best guys in the world so I'm really happy."
Hopefully the seven months that followed have been equally as magical, and haven't involved too many sleepless nights...
Featured Image Credit: Duke and Duchess of Sussex
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