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POST
/
v3
/
veo-3.1-fast-generate-img2video
Veo 3.1 Fast Image-to-Video
curl --request POST \
  --url https://api.myrouter.ai/v3/veo-3.1-fast-generate-img2video \
  --header 'Authorization: <authorization>' \
  --header 'Content-Type: <content-type>' \
  --data '
{
  "prompt": "<string>",
  "image": "<string>",
  "last_image": "<string>",
  "aspect_ratio": "<string>",
  "duration_seconds": 123,
  "enhance_prompt": true,
  "generate_audio": true,
  "negative_prompt": "<string>",
  "person_generation": "<string>",
  "resolution": "<string>",
  "sample_count": 123,
  "seed": {}
}
'
{
  "task_id": "<string>"
}
The Veo 3.1 Preview version API has been automatically made compatible with this endpoint
Generate high-quality video content from input images and text descriptions using the Veo 3.1 Fast video generation model. This API uses asynchronous processing and requires querying the final result via task_id.

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Request Headers

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Content-Type
string
required
Enum: application/json
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Authorization
string
required
Bearer authentication format: Bearer {{API Key}}.

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Request Body

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prompt
string
required
A text string describing the video you want to generate.
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image
string
Input image, supports URL or base64 encoding.
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last_image
string
End frame image, used to fill the last frame of the video. Supports URL or base64 encoding.
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aspect_ratio
string
Specifies the aspect ratio of the generated video.Enum: 16:9, 9:16. Default: 16:9.
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duration_seconds
integer
The length of the video file you want to generate (in seconds).Enum: 4, 6, 8. Default: 8.
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enhance_prompt
boolean
Specifies whether to use Gemini to enhance your prompt. Only true is supported.Default: true
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generate_audio
boolean
required
Specifies whether to generate audio for the video.
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negative_prompt
string
A text string describing content you want to prevent the model from generating.
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person_generation
string
Safety setting that controls whether person or face generation is allowed.Enum:
  • allow_adult (default): Only allows generating adults
  • dont_allow: Does not allow including people or faces in the image
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resolution
string
Resolution of the generated video.Enum: 720p (default) or 1080p
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sample_count
integer
Number of video samples to generate.Range: 1-4
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seed
uint32
A number used to initialize the random generation process. Using the same seed, prompt, and other parameters produces the same output video, making the generation process deterministic.Range: 0-4,294,967,295

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Response

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task_id
string
required
The task_id of the async task. Use the task_id to call the Get Async Task Result API to retrieve the generated result.