The clip, posted by NK News, purports to show North Korean soldiers in green fatigues receiving basic supplies at a training base in Russia’s east, ahead of joining Vladimir Putin’s war against Ukraine.
The possibility has alarmed leaders and deepened diplomatic tensions.
The hordes of men could be gearing up to storm the frontline after the US confirmed that at least 3,000 of Kim Jong Un's troops had entered Russian territory.
More videos posted on social media and satellite imagery suggest that North Korean soldiers are at Russia's military training sites for possible deployment in the war in Ukraine, The Washington Post has reported.