Where does “静止画” come from?

静止画 (Japanese) comes from Japanese 画, from Middle Chinese 畫 — drawing.

静止画 (Japanese): still picture

Definitions

Step	Language	Word	Meaning
1	Japanese	画	picture, drawing, painting; movie, film, video;...
2	Middle Chinese	畫	drawing

静止画 — Etymology, Origin & Word History | Etymology Explorer