Tuned to work whether or not feet or a penis are in the initial I2V frame input.

I recommend starting the weight of the high model at 1.0 (low should always be 1.0), and tuning down to 0.75 or 0.5 if the motion is short and stilted. High noise weight with I2V frames that already have feet and penis in them often work better at 0.75 or lower.