Doubao-Seedance 2.0 — Image to Video


Model ID	`bytedance/seedance-2-i2v`
Family	`seedance-2`
Task	`image-to-video`
Modality	Video
Upstream	ByteDance Doubao-Seedance 2.0

Endpoint

POST https://routerbase.com/v1/videos/generations

Async — returns {id, status: "pending"}; poll GET /v1/videos/generations/{id} until success or failed.

Parameters

string

required

Text prompt guiding how the first-frame image should animate. Max 5000 characters.

string[]

required

Single-element array with the first-frame image URL (public HTTPS). min_items: 1, max_items: 1.

"720p" | "1080p"

default:"\"1080p\""

Output resolution. Standard supports both; Fast is 720p-only.

"16:9" | "9:16" | "1:1" | "4:3" | "3:4" | "21:9"

default:"\"16:9\""

Aspect ratio of the generated video.

integer

default:"5"

Length of the generated clip in seconds. Range [3, 12].

boolean

default:"false"

Generate a native audio track alongside the video (Standard tier).

integer

Random-generator initialiser. Range [0, 2147483647].

Example

curl https://routerbase.com/v1/videos/generations \
  -H "Authorization: Bearer $ROUTERBASE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "bytedance/seedance-2-i2v",
    "prompt": "the character turns and smiles, camera slowly zooms in",
    "image_urls": ["https://example.com/first-frame.jpg"],
    "resolution": "1080p",
    "duration": 5
  }'

{ "id": "task_abc123…", "status": "pending", "model": "bytedance/seedance-2-i2v" }

Poll until terminal:

curl https://routerbase.com/v1/videos/generations/task_abc123… \
  -H "Authorization: Bearer $ROUTERBASE_API_KEY"

{
  "id": "task_abc123…",
  "status": "success",
  "data": [{ "url": "https://…mp4" }]
}

Get Started

API Reference

Doubao-Seedance 2.0 — Image to Video

Endpoint

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Endpoint

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Example