Choose the vertical setup for your input
Decide whether you are inventing a scene, animating an existing composition or guiding a new shot with a reference.
These are the controls in SuperSeedance. Writing “9:16” in a prompt does not replace the ratio setting or change a wide first-frame image into a vertical one.
| Input | Mode and ratio | Prepare first |
|---|---|---|
| A scene described in words | Text to video · 9:16 | Describe the subject, action and vertical framing. |
| An image that supplies the opening layout | Image to video · Match image | Upload a source already composed at 9:16. |
| An image that guides a new shot | Reference to video · 9:16 | Attach one image and describe the new composition. |
Prepare the frame before animating it
For first-frame mode, crop a copy of your source to 9:16 in an image editor. A 1080 × 1920 image is one suitable example. Crop rather than stretching the picture out of proportion. The source dimensions do not promise identical output dimensions.
Keep required details inside the crop, such as wings, a product cap or a jump’s landing point. Leave space in the direction of movement. A subject that fits while standing still may leave the frame when it turns, reaches or takes off.
If a vertical crop removes something essential, choose a different source or rebuild the composition before uploading. In reference mode you can ask for a newly arranged shot, but it may change subject placement. Choosing that mode is a creative decision, not a guaranteed repair.
SuperSeedance accepts one JPG, PNG or WebP image up to 10 MB. Each side must be 300–6000 pixels, with width divided by height between 0.4 and 2.5. Inspect the accepted upload preview before continuing.
Prepare a product image with readable detailsGive the action room to happen
Plan a beginning, one visible movement and an ending. In a narrow frame, a long sideways journey can quickly carry the subject out of view. An upward flight, a controlled jump or movement toward the camera can use the available space differently.
Describe one camera instruction that helps show that action. Keep important details away from the edges and leave room for any captions you will add later. There is no universal safe margin for every app, device and overlay; preview the finished edit in its destination.
Adapt this untested template for a text-to-video shot. Its framing instructions are requests to review in the result, not a promise that every detail will stay visible.
Papercraft animation. One continuous five-second vertical shot. A small blue paper bird unfolds its wings on a branch, hops once, then flies upward to a higher branch and lands. Keep the entire bird visible with open space above it. The camera gently tilts up to follow the flight. Warm morning light, layered paper trees, consistent folded-paper texture. No cuts, lettering or extra birds.Open the setup and review the quote
The setup below selects Seedance 2.5, text mode, five seconds, 480p, 9:16, native audio off and draft off. It also fills in the paper-bird prompt. Opening it does not submit a generation or spend credits.
Edit the prompt for your own scene and review the current quote before generating. Generation requires an eligible verified account and sufficient credits. For an image-led version, switch modes deliberately, attach your image and recheck the ratio, preview and quote.
Open the 9:16 text-to-video setupCheck the complete video, then its actual dimensions
Watch the beginning, middle and end, including the fastest movement. Does the subject stay visible? Does the action finish? Look for changing shapes, unexpected cuts and details that drift outside the frame.
Download the result and inspect its width, height, duration and audio. A 9:16 frame is taller than it is wide; the resolution label alone does not establish the delivered dimensions. Keep required AI-generation labels when editing and sharing.
If the shape is wrong, check the input mode and source ratio before changing the prompt. If the shape is right but the subject is cropped, reconsider framing and movement. Record the specific problem before deciding whether another paid attempt is worthwhile.
Diagnose image and aspect-ratio problemsQuestions and answers
Why can I not choose 9:16 in first-frame image mode?+
Seedance 2.5 first-frame mode uses Match image. Prepare a vertical 9:16 source before uploading. Text and reference modes have a separate 9:16 choice.
Can I turn a landscape photo into a vertical video?+
Crop a copy to 9:16 if the needed subject and action still fit. Otherwise prepare a different composition, or use reference mode for a newly composed shot and review what changes.
Does YouTube Shorts require exactly 9:16?+
No. YouTube says qualifying square or vertical uploads up to three minutes are categorized as Shorts. This guide uses 9:16; SuperSeedance 2.5 generates individual clips of 4–30 seconds.
Will a 1080 × 1920 source guarantee a 1080 × 1920 video?+
No. The input establishes the first-frame ratio, while output resolution is a separate setting. Check the downloaded file’s actual dimensions.
Can one clip be used for Reels, TikTok and Shorts?+
You can prepare a shared vertical composition, then review each app’s preview, overlays, audio and upload requirements. Keep separate edits when captions or framing need to differ.