# Seedance 2.5 reference to video: how to use references

> References are how Seedance 2.5 keeps the same face, product, place or style across a whole clip. One request can carry up to 30 reference images, up to 10 reference clips and up to 10 reference sounds, and the prompt says what each one is for. Prices as of 2026-11-01.

- Page: https://revana.si/seedance-2-5/reference-to-video
- Overview: https://revana.si/seedance-2-5.md
- Model reference: https://revana.si/models/seedance-2.5.md

| Reference | Field | Up to |
|---|---|---|
| Images | `image_urls` | 30 |
| Video clips | `video_urls` | 10 |
| Sounds | `audio_urls` | 10 |

Name references in the prompt by kind and order: "the woman in image 1", "copy the camera move of video 1", "the music follows audio 1".

Price: 480p $0.09 · 720p $0.21 · 1080p $0.52 per second; with video input $0.06 / $0.15 / $0.34 per second, input seconds billed too.

```json
{
  "model": "seedance-2.5",
  "input": {
    "prompt": "The chef from image 1 plates the dish from image 2 in the kitchen from image 3. Shot 1: wide of the kitchen. Shot 2: close-up of her hands plating. Shot 3: she slides the plate toward camera and smiles. Pans sizzling, low kitchen chatter.",
    "image_urls": [
      "https://example.com/chef.jpg",
      "https://example.com/dish.jpg",
      "https://example.com/kitchen.jpg"
    ],
    "duration": 15,
    "resolution": "720p",
    "aspect_ratio": "16:9",
    "audio": true
  },
  "max_cost_usd": 5
}
```

## FAQ

### How many reference images does Seedance 2.5 take?

Up to 30 reference images per request on Revana, plus up to 10 reference clips and 10 reference sounds.

### What is the difference between a reference image and a first frame?

A first frame (image_url) is the exact opening picture of the clip. Reference images (image_urls) guide who and what appears, and how it looks, without fixing any frame.

### Does Seedance 2.5 take audio references?

Yes. Send up to 10 sounds in audio_urls and say in the prompt what each is for, such as music to cut to.

### Do references cost extra?

Reference images do not. Reference clips switch the request to the video-input rate ($0.15 a second at 720p) and their seconds are billed with the output.