This sure looks a lot like MPEG-1 video compression which was a publicly available standard in 1991. Here's the spec.
MPEG-1 included some of the following (text copied from Wikipedia's MPEG-1 Article):
P-frames exist to improve compression by exploiting the temporal (over time) redundancy in a video. P-frames store only the difference in image from the ...
I don't see how this is substantially different from: US3632865, "Predictive video encoding using measured subject velocity", a patent filed in 1969. This basically claims that the motion of subjects can be tracked between frames, reducing the amount of information needed to communicate video.