Lilly Tech Systems
Motion Brush Intermediate
Motion Brush gives you director-level control over which parts of an image move and how. Instead of relying entirely on text prompts to describe motion, you paint motion vectors directly onto image regions — telling the AI exactly where movement should occur, in what direction, and at what intensity.
How Motion Brush Works
- Upload a source image
Start with a still image that you want to animate. This can be a photo, illustration, or AI-generated image.
- Select the Motion Brush tool
Choose from up to 5 motion brush regions, each with independent direction and intensity controls.
- Paint motion regions
Brush over the areas you want to move. Use the direction arrows to set which way each region should move.
- Set intensity
Adjust the motion intensity slider for each region. Low intensity for subtle movement, high for dramatic motion.
- Generate
Click Generate. The AI animates only the painted regions while keeping the rest of the image static or with minimal ambient motion.
Motion Types
| Motion | Direction | Example Use |
|---|---|---|
| Horizontal | Left / Right | Flowing water, walking people, clouds |
| Vertical | Up / Down | Rising smoke, falling rain, growing plants |
| Proximity | Toward / Away from camera | Zoom effects, approaching subjects |
| Ambient | Subtle random | Flickering fire, breathing, wind in hair |
Combining Multiple Regions
The real power of Motion Brush emerges when you combine multiple regions with different motions. For example: paint the sky with gentle horizontal motion (clouds drifting), the water with stronger horizontal motion (river flowing), and leaves with ambient motion (wind rustling) — all in the same generation.