Seedance 2.0 API

Introduction

Seedance 2.0 Image-to-Video animates a still image into a moving shot. Your image establishes the opening frame; the prompt describes what happens next, such as a subject turning, fabric moving or the camera approaching. An optional closing image can also guide the ending.

Developed by ByteDance and introduced in its February 12, 2026 launch article, Seedance 2.0 combines video and audio generation. In this mode, the useful starting point is an existing visual you want to bring into motion.

Choose the starting point for your Seedance 2.0 sequence

Key features

Multimodal creative direction

Seedance 2.0 brings text, images, video and audio into one creative process. References can guide a character's appearance, a scene's composition, movement, camera language or sound, rather than serving only as pictures to animate.

Complex motion and interaction

The model is designed to handle sequences involving several subjects, connected actions and interaction with the environment. Its motion modeling covers both larger movements and smaller details such as gestures, facial expressions and moving fabric.

Audio and video generated together

Speech, environmental sound, effects and music can be generated alongside the picture. This joint approach lets sound participate in the scene's rhythm instead of being treated solely as a separate editing step.

Storytelling and camera control

Natural-language direction can describe a sequence of shots, changes in viewpoint and the progression of a performance. The model family also supports video editing and continuation; those operations require a compatible video-input workflow, not text-only or first-frame generation.

Request parameters

Pricing

Prices are in credits, the same credits you use on the website (1 credit = $0.01). The hold is taken when the task is accepted and settled to the actual charge when it finishes; failed tasks are refunded.

Each task is rounded up to whole credits, so one run at the lowest tier costs 53 credits for a 5-second clip ($0.53).

For an exact number before you run, send the same body to POST /jobs/quote.

Use cases

Animate an approved product photograph

Begin with a desk lamp, bottle or furniture shot and request a restrained camera move or one product action. Compare the result with the original silhouette, label and surface details before publishing.

Connect two storyboard frames

Supply opening and closing images that depict compatible subjects and surroundings. Describe the movement between them. Review the middle of the clip for unexpected substitutions or abrupt changes.

Prompt guide & pro tips

How to animate a still with Seedance 2.0

Let the image establish appearance and composition; use the prompt to describe the change over time. Identify the moving subject, state the movement's direction and pace, then specify the camera separately.

1. Upload the opening still through image_url.
2. Choose one main action that fits the image.
3. Describe the sound and the important visual details to retain.

For a source photograph of a ceramic teapot beside a window, choose duration_seconds of 5:

Continue from the supplied teapot photograph in a single shot.
A narrow stream of steam rises from the spout and slowly curls toward the window.
The camera makes a gentle forward push; the teapot and table stay stationary.
Retain the blue painted pattern, lid shape and soft window light.
Quiet room ambience, without speech, music, captions or added logos.

Describe a transition between first and last frames

If you have a closing image, supply it through last_image_url. Describe the action connecting the two states—for example, a closed fan opening toward the final pose. Use compatible subjects and framing so the prompt does not have to reconcile two unrelated scenes.

For a multi-stage action, describe the stages in order rather than assigning exact timestamps. Seedance 2.0 follows shot order more reliably than precise second ranges.

Keep the movement consistent with the source

A stationary object and a moving camera are different instructions. “Push closer to the teapot” changes the view; “the teapot slides toward the camera” changes the object. Remove contradictory directions before adding detail.

If unwanted text appears, request no captions and use source artwork without incidental text when that text is not needed.

API quick start

Call the Seedance 2.0 API in three steps

1. Create an API key. Sign in to PopNow and create a key in the API console. Keys start with sk-popnow- and use the same credits as the website.
2. Send the request. POST /jobs/createTask with model bytedance/seedance-2.0/image-to-video and an input object that follows the parameter table. The response returns a task ID straight away.
3. Get the result. Poll GET /jobs/recordInfo with the task ID, or pass a callBackUrl and we post the result to it. Download the output links when the task succeeds.

# 1. Create the task. Keep the Idempotency-Key if you retry after a network error.
export IDEMPOTENCY_KEY="$(uuidgen)"
curl -X POST https://api.popnow.ai/api/v1/jobs/createTask \
  -H "Authorization: Bearer $POPNOW_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: $IDEMPOTENCY_KEY" \
  -d '{
  "model": "bytedance/seedance-2.0/image-to-video",
  "input": {
    "prompt": "A slow aerial shot drifting over a misty pine forest at sunrise",
    "image_url": "https://media.popnow.ai/influencer/examples/marco.webp",
    "aspect_ratio": "adaptive",
    "resolution": "720p",
    "duration_seconds": 5,
    "generate_audio": true
  }
}'

# 2. Copy data.taskId from the response, then poll until state is succeeded, failed, canceled or expired.
TASK_ID="TASK_ID_FROM_RESPONSE"
curl "https://api.popnow.ai/api/v1/jobs/recordInfo?taskId=$TASK_ID" \
  -H "Authorization: Bearer $POPNOW_API_KEY"

Replace the prompt and any links with your own. The API tab has the response, polling and callback reference.

Seedance 2.0 API questions

All Seedance models

Seedance 2.5 runs single takes up to 30 seconds; Seedance 2.0 goes up to 4K but stops at 15 seconds.

• Seedance 2.5 APIByteDance's newest: 30-second clips with native audioFrom 56 credits for a 5-second clip
• Seedance 2.0 Mini APILightweight Seedance for quick 720p drafts with soundFrom 9 credits for a 5-second clip
• Seedance 2.0 APICinematic clips up to 4K with native audioFrom 33 credits for a 5-second clip
• Seedance 2.0 Fast APIFaster Seedance 2.0 with sound at 720pFrom 17 credits for a 5-second clip
• Seedance 1.5 Pro APINative-audio clips with an optional locked cameraFrom 9 credits for a 5-second clip

Other video APIs

• MiniMax H3 APIExpressive clips with audio, up to 2KFrom 28 credits for a 5-second clip
• Kling 3.0 API4K clips, multi-shot cuts and motion controlFrom 51 credits for a 5-second clip
• Vidu Q4 Preview APIUp to 4K clips with sound and spoken dialogueFrom 34 credits for a 5-second clip
• Wan 3.0 APIUp to 30-second clips with synced audioFrom 34 credits for a 5-second clip
• Kling O3 APIKling’s unified model: create, animate, reference and edit up to 4KFrom 51 credits for a 5-second clip
• MiniMax H3 Max APIFast clips with ambience, effects and musicFrom 38 credits for a 5-second clip

More about Seedance 2.0

Try it

Seedance 2.0 AI Video Generator onlineCreate videos with Seedance 2.0 in PopNow

Compare

Seedance 2.0 vs Seedance 2.5

Docs

Seedance 2.0 model ID and input schema in the API docsPopNow API quickstart: your first request in five minutesImage to video guide for the PopNow APIWebhooks: get Seedance 2.0 results without polling