Vidu Q3 Reference to Video Mix

POST/v1/run

Vidu Q3 Mix by Shengshu - 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 vidu/q3/reference-to-video/mix.

Default: vidu/q3/reference-to-video/mix

stringpromptrequired

Text prompt for video generation, max 2000 characters

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<boolean>audio

Whether to use direct audio-video generation. When true, outputs video with sound.

Default: true

Optional<string>resolution

Output video resolution

Allowed values: 360p, 540p, 720p, 1080p

Default: 720p

Optional<integer>duration

Duration of the video in seconds (1-16 for Q3 models)

Range: 1 to 16

Default: 5

Optional<integer>seed

Random seed for reproducibility. If None, a random seed is chosen.

Optional<array<string>>reference_image_urls

URLs of 1 to 4 reference images used to keep subjects or scenes consistent

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": "vidu/q3/reference-to-video/mix",
  "prompt": "A character walking through a beach catching an apple.",
  "aspect_ratio": "21:9",
  "audio": true,
  "duration": 5
}'

# 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": "vidu/q3/reference-to-video/mix",
  "status": "running",
  "outputs": []
}