The G20 summit in Argentina is the first major global event Prince Mohammed has attended since the murder of the Washington Post columnist, a critic of the crown prince, in the Saudi consulate in Istanbul in October.
Canada, France, the USA and Germany have imposed targeted sanctions related to the murder of the prominent Saudi journalist. As CBS News and other outlets have reported, the Central Intelligence Agency has concluded that the crown prince ordered the assassination.
Some have noticed Trump seems to be keeping his distance from the two leaders so far, but he will reportedly have a impromptu meeting with Putin at some point before the summit is finished. Later in the one-minute clip posted on Twitter Macron says: "You never listen to me", and Mohammed bin Salman replies: "I will listen, of course". Human Rights Watch, however, has accused him of responsibility and also of war crimes in Yemen, and on Wednesday, Argentine legal authorities took initial action to consider a request to prosecute him for alleged crimes against humanity - a move apparently aimed at embarrassing him as he attends the summit.
It also now looks as though Mr Putin will meet with President Donald Trump, despite Mr Trump appearing to cancel those plans in a series of tweets 24 hours ago. After offering shifting explanations for the disappearance, the Saudi kingdom eventually admitted Khashoggi was murdered and his body dismembered.
At the end Macron can be heard saying "I am a man of my word".
Russian media are now reporting that the two will have a brief and impromptu meeting on the sidelines of the summit, contrary to Mr Trump's earlier position that he didn't want to meet because of Russia's seizure of three Ukrainian navy vessels last week.
A senior White House official said the two exchanged pleasantries.
Separately, the arrival of German Chancellor Angela Merkel was delayed after her official jet was hit by technical issues, forcing it to return to the country shortly after take-off. The deal still needs to win congressional approval in Washington.