You would need to apply the motion blur before the repeated frames. If you cadence is not regular (e.g.: 2,3,3,3,2,2,1,…) that’s an hard one. If there is regular pattern (for 3-5 seconds it’s on two) and you can split these as separate layers there could potentially be a way around like having the on-two in a separe comp and on-three in a different comp and playing with some sort of nested time remapping so time is compressed, motion blur applied and then reexpanded in main comp timeline…
Pierre
RE:Vision Effects