This tab (Deinterlace)
EDIT: Maybe try Deinterlace=Slower
Dont know where you would choose field order, perhaps is automatic.
EDIT: Handbrake help seems to be Offline.
Also try Preview before render.
EDIT: A forum thread on deinterlace field order (I have not read it).
http://forum.digital-digest.com/f114...p-94946-2.html
Another one:
https://forum.videohelp.com/threads/...rlace-Settings
More:
https://www.google.co.uk/search?sour....0.RYJQyPAfrXk