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POST
/
v1
/
chat
/
completions
Image to Video
curl --request POST \
  --url https://gptproto.com/v1/chat/completions \
  --header 'Authorization: <authorization>' \
  --header 'Content-Type: application/json' \
  --data '{
  "model": "<string>",
  "messages": [
    {}
  ]
}'
{
  "error": {
    "message": "Invalid signature",
    "type": "401"
  }
}

​
Overview

This endpoint provides image to video functionality.

​
Authentication

This endpoint requires authentication using a Bearer token.
​
Authorization
string
default:"sk-***********"
required
Your API key in the format: YOUR_API_KEY

​
Request Body

​
model
string
default:"veo3.1-pro"
required
The model to use for the request
​
messages
array
required
Prompt parameter
  • content Add “upsample” to the content parameter to enable high-resolution video
  • content Add “aspect_ratio” to the content aspect ratio. 16:9, 9:16

​
Request Example

curl -X POST "https://gptproto.com/v1/chat/completions" \
  -H "Authorization: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    //aspect_ratio 16:9 ，9:16 
    //Add "upsample" to the text parameter to enable high-resolution video
    "model": "veo3.1-pro",
    "messages": [
        {
            "role": "user",
            "content": [
                {
                    "type": "text",
                    "text": "A video of a horse dancing. aspect_ratio 16:9 upsample."
                },
                {
                    "type": "image_url",
                    "image_url": {
                        "url": "https://filesystem.site/cdn/20250612/998IGmUiM2koBGZM3UnZeImbPBNIUL.png"
                    }
                }
            ]
        }
    ],
    "stream": true
}'

{
  "error": {
    "message": "Invalid signature",
    "type": "401"
  }
}