Image-to-video with Wan 2.2 — animate a still into a clip, with a motion prompt driving the movement. Identity and scene come from the source image. Past 81 frames the clip is sampled in overlapping context windows and fused, so one action carries on as ONE clip — use a longer length instead of taking a clip's last frame and animating it again, which hands the model a still and restarts the motion from rest.
Prompt: “waves surge up the rocks and burst into spray, the lighthouse beam sweeps across the water”