It turns out that when we were filming it was set to interlace. All I know about interlace is it’s not desirable and has a stripe effect over the footage. So thought I would google what interlace was exactly.

Interlaced video is a technique of doubling the perceived frame rate introduced with the composite video signal used with analog television without consuming extra bandwidth. Since the interlaced signal contains the two fields of a video frame shot at two different times, it enhances motion perception to the viewer and reduces flicker by taking advantage of the persistence of vision effect.

To de interlace the footage was just a case of highlighting the footage on the time line in final cut pro and hitting De-intrerlase, Done.