Seedance 1.0 Pro Fast I2V

POST/v1/run

Seedance 1.0 Pro by Bytedance - animate still images into dynamic videos with AI. Transform photos into cinematic clips with natural motion, camera movement, and optional audio generation.

Request body

Submit an async generation request. The model field selects the model; other fields are model-specific input parameters.

stringmodelrequired

Model identifier. Set to bytedance/seedance/1.0/pro/fast/image-to-video.

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

stringpromptrequired

The text prompt used to generate the video

stringimagerequired

The URL of the image used to generate video

Optional<string>resolution

Video resolution - 480p for faster generation, 720p for balance, 1080p for higher quality

Allowed values: 480p, 720p, 1080p

Default: 1080p

Optional<integer>duration

Duration of the video in seconds

Allowed values: 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12

Default: 5

Optional<integer>num_frames

The number of frames to generate. If provided, will override duration.

Range: 29 to 289

Optional<boolean>camera_fixed

Whether to fix the camera position

Default: false

Optional<string>aspect_ratio

The aspect ratio of the generated image.

Allowed values: 21:9, 16:9, 3:2, 4:3, 5:4, 1:1, 4:5, 3:4, 2:3, 9:16

Optional<integer>seed

Random seed to control video generation. Use -1 for random.

Response Schema

The submit endpoint returns an accepted generation task. Poll the result endpoint with the returned id for terminal outputs or errors.

Optional<string>error

Error message if the task failed. Empty on success.

stringidrequired

Unique identifier for the generation task.

Optional<string>model

Model ID used for the prediction.

Optional<array>outputs

Array of generated content. Empty when status is not completed.

stringstatusrequired

Status of the task: pending, running, completed, failed, or timeout.

Allowed values: pending, running, completed, failed, timeout

Model capabilities

array<string>capability_tagsrequired

Capabilities declared by the model registry.

Default: image-to-video

stringexecution_moderequired

Execution mode declared by the model registry.

Default: async

# 1. Submit a generation request
curl -X POST https://api.sandbase.ai/v1/run \
  -H "Authorization: Bearer $SANDBASE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "bytedance/seedance/1.0/pro/fast/image-to-video",
  "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.",
  "image": "https://static.sandbase.ai/examples/bytedance/seedance/1.0/pro/fast/image-to-video/input_image_0.png",
  "duration": 5,
  "aspect_ratio": "21:9"
}'

# 2. If the response is still running, poll the returned id
curl https://api.sandbase.ai/v1/run/run_abc123 \
  -H "Authorization: Bearer $SANDBASE_API_KEY"

Response202 Accepted

{
  "id": "run_abc123",
  "model": "bytedance/seedance/1.0/pro/fast/image-to-video",
  "status": "running",
  "outputs": []
}