Motion Brush
Motion brush is an AI video control tool that lets you paint regions of a frame to specify where motion should occur and where the image should remain static, enabling precise directional control.
June 18, 2026
Motion brush is a video editing tool that lets you paint areas of a frame to define which regions should move and which should stay still, giving precise spatial control over AI video motion.
How it works
Without a motion brush, AI video models decide what moves based on their interpretation of the scene — water ripples, trees sway, people walk. A motion brush overrides this by letting you explicitly define motion regions. You paint over the lake, and only the lake animates. You paint over a character's hair, and only the hair flows. The rest of the frame stays frozen.
This level of control is valuable for subtle, cinematic effects where you want isolated motion against a static background — a technique used in digital comics, animated photography, and atmospheric video art.
Why it matters
Motion brush bridges the gap between full generation control (where you direct every aspect via prompt) and fully autonomous generation (where the model decides everything). It lets you take a photoreal still image and add just enough motion to make it feel alive without turning it into a full video scene.
In eaxy
Eaxy's image-to-video generation supports prompt-driven motion control. By describing which elements should move and in which direction, you achieve similar effects to a motion brush through natural language — for example, "gentle rippling on the water surface, everything else static."
Related terms
Perguntas frequentes
What is a motion brush in AI video?+
A motion brush is a tool that lets you paint over areas of a frame to tell the AI which regions should animate and which should stay still. It gives you spatial control over where motion happens in the generated video.
How does a motion brush work?+
You paint over the areas you want to animate — for example, water in a lake or clouds in the sky — and the AI model generates motion only in those painted regions while keeping the rest of the frame static.
Does eaxy support motion brush?+
Eaxy's video generation includes directional motion control through prompting. For precise region-specific motion, you can describe which elements should move and which should stay still in your prompt.
Crie com eaxy
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