The ghost of a child caught with a motion sensor camera

With a motion sensor camera, a witness caught a very weird ghost inside his home. By watching video, we can notice that is the ghost of a child.

The Hidden Underbelly 2.0 claims:

This footage was uploaded to reddit by whoops-I-ohdeed with the following statement...

A family friend has a motion sensor camera set up facing out into the backyard to see if the dogs are misbehaving during the day. In this video the blinds are shut. They're not allowed inside and they do not have any other animals. If someone could debunk this, would be much appreciated.

Source, 06th May 2018