@mehitobel @idoubtit My guess would be they taped the camera to the lower pane of the window and set it for a time delay shot, then exited and closed the door. Then they used a photo editing tool (Gimp, Photoshop, etc.) to remove the camera from the window pane by replacing that part of the image with the same area from the other pane. Time delay shots are a wonderful thing when you need time to get yourself out of the picture.