Here is a brief description of the video: The video shows a royal guard performance taking place in a plaza with the Gyeongbokgung Palace in the background. The scene is captured from behind a crowd of onlookers, many of whom are holding up their phones to record the event. In the foreground, there are performers dressed in traditional Korean royal guard attire. One is in bright blue robes, holding a flag featuring an elaborate red design. Another performer stands in red, while a large, brightly colored drum sits on a stand. The crowd forms a semi-circle around the performing area. Mountains can be seen in the distance under a clear, blue sky.