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Photo Animation: How a Still Becomes a Video

What a video model can build around a still frame — and where the artifacts begin.

Animation is video generated from a single still: the model invents motion that was never in the frame. So the result depends less on "photo quality" in general and more on whether the frame leaves room for movement and how clearly that movement is described.

The section collects breakdowns of the usual failures — rubbery motion, a drifting face, a background that pulls apart — along with the practice: which subjects animate predictably and which are better left alone.