In the video, a man is seen using a caulking gun to apply caulk to a white column. He starts by positioning the gun and then proceeds to squeeze the trigger, applying the caulk in a steady and controlled manner. The man appears to be experienced in using the caulking gun, as he moves it along the column with precision. The caulk is white, matching the color of the column, and it appears to be of a thick consistency. The man takes his time to ensure that the caulk is applied evenly and without any gaps. The background of the video is a room with a staircase, indicating that the column is likely part of a larger structure.