API reference · Bytedance

bytedance/seedance/1.0/pro/fast/image-to-video

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

VIDEOAsyncOpen model

Production endpoint

Send your first request

OpenAI-compatible endpoint with unified authentication and usage tracking.

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

Model IDbytedance/seedance/1.0/pro/fast/image-to-video

Input Schema

8 parameters · 2 required · 6 optional

Parameter	Type	Required	Description
`image`	string	Required	The URL of the image used to generate video
`prompt`	string	Required	The text prompt used to generate the video
`seed`	integer	Optional	Random seed to control video generation. Use -1 for random.
`duration`	integer	Optional	Duration of the video in seconds · Options: 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 · Default: 5 23456789101112
`num_frames`	integer	Optional	The number of frames to generate. If provided, will override duration. · Min: 29 · Max: 289
`resolution`	string	Optional	Video resolution - 480p for faster generation, 720p for balance, 1080p for higher quality · Options: 480p, 720p, 1080p · Default: "1080p" 480p720p1080p
`aspect_ratio`	string	Optional	The aspect ratio of the generated image. · Options: 21:9, 16:9, 3:2, 4:3, 5:4, 1:1, 4:5, 3:4, 2:3, 9:16 21:916:93:24:35:41:14:53:42:39:16
`camera_fixed`	boolean	Optional	Whether to fix the camera position · Default: false

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/1.0/pro/fast/image-to-video",
  "image": "https://static.sandbase.ai/examples/bytedance/seedance/1.0/pro/fast/image-to-video/input_image_0.png",
  "prompt": "Bathed in a stark spotlight, a lone ballet dancer takes center stage. Her movements, precise and graceful, tell a story of passion and dedication against the velvet darkness. The scene evokes a sense of intimacy, highlighting the raw emotion and artistry of her performance.",
  "duration": 5,
  "resolution": "1080p",
  "camera_fixed": false
}'

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

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