API reference · Bytedance

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

Input Schema

7 parameters · 1 required · 6 optional

Parameter	Type	Required	Description
`prompt`	string	Required	The text prompt to generate a video from. · Min length: 3 · Max length: 50000 · Default: "Photorealistic style: Under a clear blue sky, a vast expanse of white daisy fields stretches out. The camera gradually zooms in and finally fixates on a close-up of a single daisy, with several glistening dewdrops resting on its petals."
`seed`	integer	Optional	Random seed for reproducible results. Set to -1 for random seed.
`duration`	integer	Optional	Duration of the video in seconds. · Options: 4, 5, 6, 7, 8, 9, 10, 11, 12 · Default: 5 456789101112
`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 · Default: "16:9" 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/text-to-video",
  "prompt": "Photorealistic style: Under a clear blue sky, a vast expanse of white daisy fields stretches out. The camera gradually zooms in and finally fixates on a close-up of a single daisy, with several glistening dewdrops resting on its petals.",
  "duration": 5,
  "resolution": "720p",
  "aspect_ratio": "16:9",
  "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"

← Back to Seedance v1.5 Pro Text to Video