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title: "Video Foley (MMAudio)"
description: "MMAudio v2 — generate synchronized sound (foley, ambience, impacts) FOR a video clip. Input a video + a text description of the sound; output is the same video with a matched soundtrack. Makes silent AI b-roll sound real."
updated: 2026-09-19
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# Video Foley (MMAudio)

**Badge:** foley  
**Node type:** `audio:mmaudio_v2`  
**Category:** `audio`

## Description

MMAudio v2 — generate synchronized sound (foley, ambience, impacts) FOR a video clip. Input a video + a text description of the sound; output is the same video with a matched soundtrack. Makes silent AI b-roll sound real.

## Pricing

- **Cost:** ~1 credit per seconds
- **Per-second rate:** The figure is the rate at a 5-second reference run. Our margin is progressive and steepest on the smallest runs, so a clip shorter than that can cost more per second, and a model priced with a flat multiplier is exact at every length. The charge is always computed from the real duration.

## Canvas ports

These appear as port handles on the left side of the node.

| ID                | Label                 | Details              |
| ----------------- | --------------------- | -------------------- |
| `video_url`       | **Video**             | `VIDEO` _(required)_ |
| `prompt`          | **Sound Description** | `TEXT` _(required)_  |
| `negative_prompt` | **Negative Prompt**   | `TEXT`               |

## Sidebar config

These render as form fields in the right-side config panel when the node is selected.

| ID             | Label            | Details           |
| -------------- | ---------------- | ----------------- |
| `duration`     | **Duration (s)** | `NUMBER` · `1…30` |
| `num_steps`    | **Steps**        | `NUMBER` · `4…50` |
| `cfg_strength` | **Guidance**     | `NUMBER` · `0…20` |
| `seed`         | **Seed**         | `TEXT`            |

## Outputs

| ID      | Label             | Type    |
| ------- | ----------------- | ------- |
| `video` | **Video + Audio** | `VIDEO` |

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_Auto-generated from the Wireflow node registry._

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Documentation index: fetch https://www.wireflow.ai/llms.txt for the full list of Wireflow docs.