Veo 3.1 API

For unparalleled detail and nuance, perfect for when your vision requires the best possible quality.

Endpoint

POST https://api.hedra.com/v3/models/veo-31

Example request

curl -X POST "https://api.hedra.com/v3/models/veo-31" \
  -H "Authorization: Key $HEDRA_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"input": {"prompt": "a cinematic shot of a city at dusk"}}'

Parameters

num_outputsinteger

Number of outputs generated per job. Only 1 is supported.

promptstringrequired

Generation prompt.

aspect_ratiostringrequired

Output aspect ratio.

resolutionstringrequired

Output resolution.

duration_msinteger

Duration in ms.

generate_audioboolean

Whether to generate native audio for the video.

negative_promptstring

What to avoid in the generated video.

start_image

Start frame (image-to-video). At most 20 MB.

end_image

End frame (first-last-frame-to-video). At most 20 MB.

source_video

Source video (video-to-video). From 1s to 30s and at most 524.2 MB.

imagesarray

Reference images. 1 to 3 images, each at most 20 MB.

seedinteger

Seed for reproducible output; omit for a random seed. From 0 to 4294967295.

qualitystringrequired

Quality level to generate at.