How do I identify and delete duplicated frames?

I am aware of the "Show Duplicate Frames" option, but it simply does not work for what I'm doing. This is most likely not what that function is intended for, but I have gameplay footage that captured the game lagging at several instances. From what I can see, the frames are exactly the same in many instances. Is there a way to quickly identify all of the "duplicate" frames and delete them or am I really going to keep spending hours going frame by frame through my hour long video?

Thanks.