> ## Documentation Index
> Fetch the complete documentation index at: https://docs.hoox.video/llms.txt
> Use this file to discover all available pages before exploring further.

# Flux 3 Edit

> Flux · `flux-3-video-edit` · video

## Identifier

Use the model identifier `flux-3-video-edit` in the `model` field when calling [`/asset/start`](/api-reference/assets/start).

## Capabilities

| Property | Value |
| - | - |
| Reference inputs | 1 |
| Input types | `video` |
| Max prompt length | 4096 chars |
| Tags | `video-edit` |

## Inputs

This model takes **named media inputs**. Pass each one as a top-level field in the request body. Each field accepts exactly one of `url`, `asset_id`, or `avatar_id`.

| Field | Type | Required | Description |
| - | - | - | - |
| `source_video` | video | yes | Video to edit. The prompt describes the modifications to apply. MP4 under 15 seconds and 50 MB. |

* `url` — a direct, publicly accessible file URL
* `asset_id` — the ID of an existing asset in your Hoox space (e.g. a previous generation)
* `avatar_id` — the ID of an avatar defined in your Hoox space

A positional `references` array is also accepted, mapped onto the slots in the order above.

## Pricing

Default parameters: **\~4.5 credits / generation**.

For exact pricing with your own parameters, call [`/asset/pricing`](/api-reference/assets/pricing) with the `model` and any parameters that affect cost.

## Example request

```json theme={null}
{
  "type": "video",
  "model": "flux-3-video-edit",
  "prompt": "Describe what you want to generate",
  "source_video": {
    "url": "https://example.com/reference.mp4"
  }
}
```

See [`/asset/start`](/api-reference/assets/start) for the full request/response reference, error codes, and code samples in cURL / Python / JavaScript.


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