# Omni Flash

> Gemini Omni Flash on Zurelay: 720p and 1080p clips with sound, 6 or 8 seconds, from a prompt, a start image, a start and end image or up to 3 reference images.

Source: https://zurelay.com/docs/omni-flash

Google’s Gemini Omni Flash: video with sound at 720p and 1080p, 6 or 8 seconds long, from a prompt, a start image, a start and end image, or up to 3 reference images.

## Prices

| Model | Resolution | Per second | 6 second clip |
| --- | --- | --- | --- |
| [Gemini Omni Flash](https://zurelay.com/models/gemini-omni-flash) | 720p | $0.047 | $0.282 |
| [Gemini Omni Flash](https://zurelay.com/models/gemini-omni-flash) | 1080p | $0.047 | $0.282 |

A clip costs its length times the rate: a 6 second 720p clip is $0.282. It’s charged only when the video is delivered.

## What it takes

- A prompt of up to 8,000 characters.
- A `first_frame` (and optionally a `last_frame`), or up to 3 `reference_images`, not both.
- Lengths of 6 or 8 seconds.
- 16:9 and 9:16. From a first frame, set `aspect_ratio` to the image’s shape.
- Sound is always on.
- 720p and 1080p.

## Example

Request body:

```json
{
  "model": "gemini-omni-flash",
  "first_frame": "https://example.com/river-valley.jpg",
  "last_frame": "https://example.com/river-valley-night.jpg",
  "prompt": "A timelapse of the river valley from sunrise into a clear starry night; the drone holds its position as the farmhouse windows light up.",
  "seconds": 8,
  "resolution": "720p",
  "aspect_ratio": "16:9"
}
```

## Prompting

- Describe the scene, the motion, the camera, the light and the sound: Omni makes the audio too.
- Time the action within the clip if it matters: “[0-3s] she walks in, [3-6s] she turns to the window”.
- Say what to leave out in the prompt itself (“no text on screen”): there’s no `negative_prompt`.

## Good to know

- Clips are usually ready in one to two minutes.
- Frames are passed to the model as images with Google’s own instruction to start (or end) on them, as Google’s Omni API does.
- There’s no 360p, 4K, video editing or extension yet.
- Prompts or images that may break the content rules can be declined (`content_policy`); declined videos are free.
- Videos are kept for 30 days; download the ones you want to keep.

Full API details: [Video generation](https://zurelay.com/docs/video). Try it in the dashboard’s [Playground](https://zurelay.com/app/playground), which shows the code for each video.