But Thailand's deadline for posts deemed critical of the royal family to be removed has passed this morning and the kingdom has not followed through with its threat to ban the website.
Footage shows the monarch, who came to power last year following the death of his father, with a number of tattoos on his arms, stomach, and back.
However, the tattoos may actually be transfers as they are not the same as those seen in photographs taken at Munich airport earlier in 2016, one observer noticed.
The sleeve tattoo is shorter than in the airport photos and he has a tattooed belly in this video, which he did not have at the airport.
Under strict lese-majeste laws in Thailand, people can be jailed for up to 15 years for sharing material which is insulting to the monarchy.
The video has been geo-blocked by the social network, but Thai authorities say 131 pages containing the 'illicit' video are still available.
Takorn Tantasith, secretary-general of the National Broadcasting and Telecommunications Commission had warned: 'If even a single illicit page remains, we will immediately discuss what legal steps to take against Facebook Thailand.'
Last week the Thai Internet Service Provider Association emailed Facebook chief executive Mark Zuckerberg calling for the posts to be blocked, the Bangkok Post reports.
The Worldwide Movement for Human Rights has said 105 people have been arrested under the strict laws since May 2014.
President Dimitris Christopoulos said: 'In less than three years, the military junta has generated a surge in the number of political prisoners detained under lèse-majesté by abusing a draconian law that is inconsistent with Thailand's international obligations.'
The monarch is the only son of King Bhumibol Adulyadej, who died last year at the age of 88.
After spending much of his life outside the public eye, Maha Vajiralongkorn was catapulted into the limelight as future king of a politically fractured nation.
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