Kick-off was scheduled for 19:45 BST. The game started over an hour late. North Korea are playing Colombia in the second of the Olympic matches being held at Glasgow’s Hampden stadium.
Games organisers in London have apologised to North Korean officials for the mistake.
The squad walked off and could only be persuaded to return when the teams were announced again with each player’s face displayed next to the North Korean flag.
Relations between the two Koreas have been tense since the armistice which brought an end to fighting in the Korean War in 1953.
It was not clear who had produced the video which was shown in the stadium. (FL)