What is this? I keep capturing strange things

I just bought 4 camera’s and only two are set up and I keep capturing strange things. While my co-worker who has the same camera catches nothing at all.

I could only get three frames from this video, so I thought I would post what I had. Any ideas? I will post the other one soon.

 

You can see the video below the three pictures.

Some bug. Can’t tell what.