Nodaro DocsAspect Ratio
The Aspect Ratio node holds one frame shape, such as 16:9 or 9:16. Wired into the Settings input of Generate Image or a video node, it sets their ratio.
The Aspect Ratio node holds one frame shape: 16:9, 9:16, 1:1, 4:3 or 4:5. Connect it to the Settings input of Generate Image, Generate Video or Generate Video Pro to set the shape of their images and clips. It never runs a model and costs nothing.
Settings
| Setting | What it does |
|---|---|
| Aspect Ratio | 16:9 (Landscape) (default), 9:16 (Portrait), 1:1 (Square), 4:3 or 4:5. |
What it connects to
| Node | Input | What happens |
|---|---|---|
| Generate Image | Settings | Replaces the node's Aspect Ratio with the ratio this node holds, fitted to the model. |
| Generate Video | Settings | Replaces the node's Aspect Ratio with the ratio this node holds, fitted to the model. |
| Generate Video Pro | Settings | The same, for the whole stitched video. |
- The nearest ratio runs. A model that does not make the ratio runs the nearest ratio it does. For example,
4:5runs as3:4on GPT Image 2 and on Seedance 2, and as9:16on VEO 3.1. The Nano Banana image models make all five ratios. - Adaptive is replaced. On a video node, a connected ratio also replaces Adaptive and Auto (from image).
- The connected node shows it. A chip on the node shows the ratio it runs. The ratio control in the strip under the node cannot be changed, and the settings panel shows the Aspect Ratio node as its source.
On Generate Video and Generate Video Pro, the Settings input also takes Duration, Provider and Motion nodes. On Generate Image, it also takes a Provider node, but no Duration or Motion node.
Which ratio for which platform
| Ratio | Use it for |
|---|---|
16:9 | YouTube, desktop and other widescreen video |
9:16 | TikTok, Instagram Reels, YouTube Shorts and other vertical mobile formats |
1:1 | Square social posts, such as the Instagram feed |
4:5 | Portrait feed posts that fill more of the Instagram feed |
4:3 | Classic 4:3 framing |
Image and video nodes offer these shapes and often more, such as 21:9, 3:2 and 2:3, depending on the model. On Generate Video, Adaptive or Auto (from image) matches the shape of a connected start frame.
Tips
- Decide the platform first. Choose the ratio before you generate, instead of cropping later.
- Set many images and clips in one place. Connect one Aspect Ratio node to the Settings input of every Generate Image and video node that must share a shape.
- Check the model's ratios. A model that cannot make
4:5runs the nearest ratio it can. Every image model page and video model page lists the ratios the model makes. - Reformat a finished video. To turn a landscape video into a vertical one, use Social Media Format.
Frequently asked questions
Does the Aspect Ratio node set the shape of my images and clips?
Yes. Connect it to the Settings input of Generate Image, Generate Video or Generate Video Pro, and the node runs at that ratio instead of its own. When the model does not make that ratio, the node runs the nearest one it does.
Which ratio should I use for TikTok and Reels?
Use 9:16, the vertical format of TikTok, Instagram Reels and YouTube Shorts. Use 16:9 for YouTube and other widescreen video, and 1:1 or 4:5 for feed posts.
Why did my image or clip come out in another ratio than the Aspect Ratio node?
The model does not make that ratio, so the node runs the nearest ratio it does. For example, 4:5 runs as 3:4 on GPT Image 2 and Seedance 2, and as 9:16 on VEO 3.1. The chip on the connected node shows the ratio it runs.
Why can I not find a ratio in a node's settings?
The choices depend on the model. Each model page lists the aspect ratios the model accepts.
Does the Aspect Ratio node cost credits?
No. It only holds a value and never runs a model.
Related
Generation settings nodes
Generate Image
Generate Video
Generate Video Pro
Social Media Format
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Provider
The Provider node holds one image or video model. Wired into the Settings input of Generate Image, Generate Video or Generate Video Pro, it sets their model.
Duration
The Duration node holds a length in seconds. It sets the Target Length of Generate Script, and the length of Generate Video and Generate Video Pro runs.