human: <image>
How many people take part in the action?

gpt: Only one.  He is a young boy.

human: What is he doing at the start?

gpt: He walked upstairs outside of a house.

human: Does he enter a doorway without knocking?

gpt: He is actually knocking at the door.

human: Does anybody answer his knocking?

gpt: No.  There was no one answering the door.

human: Does anybody talk in the video?

gpt: I do not hear anybody talking  in the video.