Veo3 API Reference

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 google/veo-3/image-to-video.

Default: google/veo-3/image-to-video

stringpromptrequired

The text prompt describing how the image should be animated

stringimagerequired

URL of the input image to animate. Should be 720p or higher resolution in 16:9 or 9:16 aspect ratio. If the image is not in 16:9 or 9:16 aspect ratio, it will be cropped to fit.

Optional<string>resolution

The resolution of the generated video.

Allowed values: 720p, 1080p

Default: 720p

Optional<integer>duration

The duration of the generated video.

Allowed values: 4, 6, 8

Default: 8

Optional<boolean>generate_audio

Whether to generate audio for the video.

Default: true

Optional<boolean>auto_fix

Whether to automatically attempt to fix prompts that fail content policy or other validation checks by rewriting them.

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

The seed for the random number generator.

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": "google/veo-3/image-to-video", "prompt": "A woman looks into the camera, breathes in, then exclaims energetically, \"have you guys checked out Veo3 Image-to-Video on Fal? It's incredible!\"", "image": "https://static.sandbase.ai/examples/google/veo-3/image-to-video/input_image_0.png", "duration": 8, "aspect_ratio": "21:9" }' # 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"