API reference · Bytedance

bytedance/seedance/2.5/reference-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/2.5/reference-to-video

Input Schema

8 parameters · 1 required · 7 optional

Parameter	Type	Required	Description
`prompt`	string	Required	The text prompt to generate a video from. · Min length: 3 · Max length: 50000 · Default: "Use Image1 as the visual reference and Video1 as the motion reference. Create a peaceful cinematic shoreline scene with rolling ocean waves at golden hour, soft foam, natural water movement, and no people."
`audios`	string[]	Optional	The URLs of reference audio files to guide video generation.
`images`	string[]	Optional	The URLs of reference images to guide video generation. Refer to them in the prompt as @Image1, @Image2, etc.
`videos`	string[]	Optional	The URLs of reference videos to guide video generation. Up to 10 MP4 or MOV files; combined duration must not exceed 30 seconds.
`duration`	integer	Optional	The duration of the generated video in seconds (4-30). · Options: 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30 · Default: 5 456789101112131415161718192021222324252627282930
`resolution`	string	Optional	The resolution of the video to generate. · Options: 480p, 720p · Default: "720p" 480p720p
`aspect_ratio`	string	Optional	The aspect ratio of the generated video. · Options: 16:9, 9:16, 1:1, 4:3, 3:4, 21:9 16:99:161:14:33:421:9
`generate_audio`	boolean	Optional	Whether to generate synchronized audio (voice, SFX, BGM) 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/2.5/reference-to-video",
  "images": [
    "https://static.sandbase.ai/examples/bytedance/seedance/2.0/reference-to-video/input_image_safe_ocean_0.jpg"
  ],
  "prompt": "Use Image1 as the visual reference and Video1 as the motion reference. Create a peaceful cinematic shoreline scene with rolling ocean waves at golden hour, soft foam, natural water movement, and no people.",
  "videos": [
    "https://static.sandbase.ai/examples/pixverse/sound-effects/input_video_0.mp4"
  ],
  "duration": 5,
  "resolution": "720p",
  "generate_audio": true
}'

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

← Back to Seedance 2.5 Reference to Video