veo generate image to video

[Ernest033]

To: support@cometapi.com
Subject: Veo 3 image-to-video - no audio generated

Hello,

Issue: Veo 3 models (veo3-fast-frames, veo3-pro) generate videos WITHOUT audio when using image-to-video via /v1/chat/completions endpoint.

Your documentation states "The generated videos have sound", but image-to-video outputs are silent.

Question: How to enable audio generation for image-to-video in Veo 3?

Current request:
POST https://api.cometapi.com/v1/chat/completions
{
"model": "veo3-fast-frames",
"messages": [{
"role": "user",
"content": [
{"type": "text", "text": "prompt"},
{"type": "image_url", "image_url": {"url": "..."}}
]
}]
}

API Key: sk-txVB1dNQ...

[tensornull]

Sorry, perhaps my reply came too late. You can get faster technical support responses in our Discord channel. Based on my testing, the video output from the veo3-fast-frames model does have sound.

{
    "model": "veo3-fast-frames",
    "stream": true,
    "messages": [
        {
            "role": "user",
            "content": "Generate a cute kitten sitting on a cloud, cartoon style"
        }
    ]
}

The requested output is as follows.

Video generation task created
Task ID: veo3-fast-frames:862e1651-ab4f-41a3-80ed-e251ae8fdaf5
To prevent task interruption, you can continuously track progress from the following links:
Data Preview | Source Data
Waiting for processing

✨ Enhancing prompt

Type: VEO3 Image to Video
🎬 Starting video generation.............................

🎉 High-quality video generated

▶️ Watch Online | ⏬ Download Video