In the video, a man is seen holding a knife in his hand. He then proceeds to sharpen the knife on his arm. The man's arm is visible, and he is using the knife to sharpen it. The knife appears to be a standard kitchen knife with a black handle. The man's arm is steady as he runs the knife along it, and he seems to be focused on the task at hand. The background is not clearly visible, but it appears to be an indoor setting. The video does not contain any other objects or people.