Seedance 2.0 Fast Image to Video

POST/v1/run

ByteDance's most advanced image-to-video model in its fast tier delivering lower latency and cost without compromising on cinematic output, native audio, multi-shot editing, and director-level camera control for professional-grade video creation.

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/2.0/fast/image-to-video.

Default: bytedance/seedance/2.0/fast/image-to-video

stringpromptrequired

The text prompt to generate a video from.

Default: Create a 360-degree orbiting camera shot based on this photo.

stringimagerequired

The URL of the starting image for video generation.

Optional<string>end_image

The URL of the ending image for video generation.

Optional<integer>duration

The duration of the generated video in seconds.

Allowed values: 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15

Default: 5

Optional<string>aspect_ratio

The aspect ratio of the generated video.

Allowed values: 16:9, 9:16, 1:1, 4:3, 3:4

Optional<string>resolution

The resolution of the video to generate.

Allowed values: 480p, 720p

Default: 720p

Response Schema

The submit endpoint returns a run response. If its status is pending or running, poll GET /v1/run/{id} with the returned opaque ID until it reaches a terminal state.

stringidrequired

Opaque SandBase run identifier. Use it exactly as returned; no prefix is guaranteed.

stringstatusrequired

Current public run status.

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

Optional<string>model

Public SandBase model name used for this run.

Optional<array<object>>outputs

Present only for completed runs. Each object is capability-specific; inspect the selected model schema for its fields.

Optional<object>error

Present only for failed or timeout runs. Contains a public error type and sanitized message.

Optional<string>error.type

Stable public error category.

Optional<string>error.message

Sanitized error message safe to show to clients.

Optional<object>usage

Usage details when available.

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/2.0/fast/image-to-video",
  "prompt": "Create a 360-degree orbiting camera shot based on this photo.",
  "image": "https://p9-arcosite.byteimg.com/tos-cn-i-goo7wpa0wc/f8fc1008f23a4908b7c897e8b7eb87df~tplv-goo7wpa0wc-image.image",
  "duration": 5,
  "aspect_ratio": "16:9"
}'

# 2. If the response is still running, poll the returned id
curl https://api.sandbase.ai/v1/run/f3d2e8a1-7c4b-4a12-9d2e-123456789abc \
  -H "Authorization: Bearer $SANDBASE_API_KEY"

Response202 Accepted

{
  "id": "f3d2e8a1-7c4b-4a12-9d2e-123456789abc",
  "model": "bytedance/seedance/2.0/fast/image-to-video",
  "status": "running"
}