"I am terrified and confused and I wanted to leave through Kabul airport, but I could not," said Rahmatullah Shahryar, who filmed the video.
He said he does not have proper documents, but still hoped to find a way out as he fears the Taliban.
He has tried to leave twice so far, and said he would not give up.
"I will try to leave the country again by any means possible," he told Reuters.
Thousands of people, desperate to flee the country, were still thronging the airport, the NATO official who declined to be identified told Reuters, even though the Taliban have urged people without legal travel documents to go home.