NB2L YouTube URL to Image Generation Example is Not Working

Gemini API
1

I am trying NB2L example from google documentation and it gives the error

curl -s -X POST \
  "https://generativelanguage.googleapis.com/v1beta/interactions" \
  -H "x-goog-api-key: $GEMINI_API_KEY" \
  -H 'Content-Type: application/json' \
  -d '{
    "model": "gemini-3.1-flash-image",
    "input": [
      {
        "type": "video",
        "uri": "https://www.youtube.com/watch?v=UTdfxFyOQTI",
        "mime_type": "video/mp4"
      },
      {
        "type": "text",
        "text": "Generate a poster image that captures the key themes of this video."
      }
    ],
    "response_format": {
      "type": "image",
      "aspect_ratio": "16:9"
    }
  }'

Error

{
“error”: {
“message”: “Audio input modality is not enabled for this model”,
“code”: “invalid_request”
}
}

Anybody able to make it work in Postman?

2

This model does not support video as an input, although for unknown reasons there is an error regarding audio.

image
image1814Ă—786 71.3 KB

Maybe this will help.

3

Their this documentation says different then - https://ai.google.dev/gemini-api/docs/image-generation?authuser=5#video-to-image

image
image1091Ă—829 67.2 KB

4

That changes things. I’m worried that these might be discrepancies between different versions of the Gemini product, but the manual hasn’t been updated. Because I can’t believe anyone would make such logical errors in the documentation.

Someone over there should take charge of moderating this documentation, because if that’s a maple leaf…

image
image1075Ă—1024 72.2 KB