Ghost caught by CCTV in Croxteth Hall Liverpool

This footage was captured in Croxteth Hall in Liverpool, England.  The while apparition can be seen drifting from the top left of the CCTV to the bottom left.  It does seem the ghost object is walking through the grass, as there seems to be legs striding like a normal human being.  But the ghost can not be seen clearly, it’s more of a large what shadow which is a very common appearance when ghost appear.