Can an AI Video Model Animate Pixel Art Without Breaking the Grid?

The setup

The start frame was a 1,024 × 1,024 pixel-art shop front made in Ciyo from a photo. In the Video Generator we chose Seedance 2.5, the Frames mode with that picture as the start frame, 5 seconds, 720p and audio off. The price shown was 197 credits; it was the same with audio on.

Frames mode matters. It starts the clip from your exact picture, where the Reference mode only uses the picture as a guide.

Keep this exact pixel-art style and the camera completely still. Loop-friendly idle animation: the ceiling lamps flicker softly, the plant leaves sway a little, and the bicycle wheel does not move. Keep hard square pixels and the same flat colours in every frame; no blur, no smooth shading, no new objects, no text.

What came back

The clip was 960 × 960 at 24 frames per second: 121 frames over 5.04 seconds. The camera stayed still and the bicycle did not move, as asked. At normal size it looks like a gentle pixel-art loop.

Up close, it is not the same pixel art. The share of sharp colour steps — the hard edges between pixels — fell from 2.7% in the start image to about 1.5% after the first second. The blocks soften and shift slightly, and each frame holds 69,000 to 84,000 colours.

We measured the grid, frame by frame

We shrank every frame to 64 × 64 and mapped it to one 16-colour palette taken from the first frame. Then we counted the grid cells that differ from the first frame.

By one second, 27.4% of the cells had changed; by the end, 29.7%. Frame to frame the change is small — 3% of cells on average — which is why it looks calm when it plays. But the prompt asked only the lamps and leaves to move. We drew generous boxes around the lamps and the plant — 28% of the picture — and 76% of the changed cells at one second were outside them. That is the model repainting areas that should be still.

When the video model is good enough

Use the clip as it is when the pixel look is the point and nobody will inspect single pixels: a background loop on a stream, a looping post, a menu screen in a café window.

Do not use it where the grid is the product: a game sprite, a bead or cross-stitch pattern, or an animation that must match other frames exactly. There, a repainted grid is a defect.

Two ways to keep the grid

First, snap the clip. Export the frames, shrink each to 64 × 64, map them all to one fixed palette and scale them up with nearest-neighbour resizing. We did this and got a 16-colour GIF of 221 KB. The grid is exact again, but the repainting shows as cells that flicker between colours.

Second, draw the motion instead of generating it. Keep the still as the base frame and change only the pixels that should move — a lamp that swaps between two colours, three leaves that shift by one pixel. Ciyo's sprite-sheet guide covers frame layout.

• GPT-6 Astra sprite sheets: alignment, frames and transparency
• Turn a photo into a short video for your shop

A test to run on your own clip

Play the clip at 400% zoom for five seconds and watch one area that should be still, such as a wall or the pavement. If the pixels there crawl or change colour, the grid has drifted. Decide from the table above whether that matters for where the clip will go.