The YouTube poster describes the video this way:
This is a video that I took on my mobile while we were messing around on the green. We saw a face in the window of a locked room. Keiren the manager took us up to look afterwards but there was no body there and the room is out of use. Couldnt sleep after I took this.
Creepy vid. Here’s a screen grab of the face:
The face appears very solid. So there’s no reason to believe it isn’t just a person. But still …