API reference · Bytedance

bytedance/seedance/1.5/pro/image-to-video

Integrate this model through SandBase's unified API, with production-ready schemas and examples.

VIDEOAsyncOpen model

Production endpoint

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OpenAI-compatible endpoint with unified authentication and usage tracking.

POSThttps://api.sandbase.ai/v1/run

Model IDbytedance/seedance/1.5/pro/image-to-video

Input Schema

9 parameters · 2 required · 7 optional

Parameter	Type	Required	Description
`image`	string	Required	The URL of the starting image for video generation.
`prompt`	string	Required	The text prompt to generate a video from. · Min length: 3 · Max length: 50000 · Default: "A girl holding a fox, the girl opens her eyes and gently looks at the camera, the fox is held gently, the camera slowly pulls back, the girl's hair is blown by the wind, and the sound of the wind can be heard."
`seed`	integer	Optional	The random seed used for generation.
`duration`	integer	Optional	Duration of the video in seconds. · Options: 4, 5, 6, 7, 8, 9, 10, 11, 12 · Default: 5 456789101112
`end_image`	string	Optional	The URL of the ending image for video generation.
`resolution`	string	Optional	The resolution of the video to generate. · Options: 480p, 720p, 1080p · Default: "720p" 480p720p1080p
`aspect_ratio`	string	Optional	The aspect ratio of the generated video. · Options: 21:9, 16:9, 4:3, 1:1, 3:4, 9:16 21:916:94:31:13:49:16
`camera_fixed`	boolean	Optional	Whether to fix the camera position. · Default: false
`generate_audio`	boolean	Optional	Whether to generate audio for the video. · Default: true

Output Schema

Field	Type	Description
`id`	string	Unique identifier for the generation task
`status`	string	Task status: pending, running, completed, failed, timeout
`model`	string	Model used for the generation
`outputs`	array	Array of output items
`outputs[].url`	string	URL of the generated artifact
`outputs[].content_type`	string	MIME type (e.g. image/png, video/mp4)
`error`	object \| null	Error details if failed, null on success
`error.type`	string	Machine-readable error type code
`error.message`	string	Human-readable error description

Async Workflow

This model uses asynchronous execution. Submit a request and poll for the result.

Submit — POST to /v1/run, receive an id
Poll — GET /v1/run/{id} until status is completed, failed, or timeout
Retrieve — Read outputs from the completed response

Code Examples

Ready-to-run snippets

# Step 1: Submit
curl -X POST https://api.sandbase.ai/v1/run \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{
  "model": "bytedance/seedance/1.5/pro/image-to-video",
  "image": "https://p9-arcosite.byteimg.com/tos-cn-i-goo7wpa0wc/a28ec84ff9fc4287a0d98191020a3218~tplv-goo7wpa0wc-image.image",
  "prompt": "A girl holding a fox, the girl opens her eyes and gently looks at the camera, the fox is held gently, the camera slowly pulls back, the girl's hair is blown by the wind, and the sound of the wind can be heard.",
  "duration": 5,
  "resolution": "720p",
  "camera_fixed": false,
  "generate_audio": true
}'

# Step 2: Poll result (replace <id>)
curl https://api.sandbase.ai/v1/run/<id> \
  -H "Authorization: Bearer YOUR_API_KEY"

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