# Adjust Volume

> Change the volume of an audio track or of a video's sound, level it with Normalize, and add a fade-in and a fade-out of up to 10 seconds each.

Source: https://nodaro.ai/docs/nodes/audio/adjust-volume

The **Adjust Volume** node changes the volume of an audio track, or of a video's sound, and can add a fade-in and a fade-out. **Normalize** levels the sound to a standard loudness, which keeps clips from different sources at the same level. Wire in audio to get audio back, or a video to get the same video back with its sound adjusted.

- Found in: Audio › Edit Audio
- Output: audio
- API type: `adjust-volume`

## When to use it
- Level voiceover clips so that they all play at the same loudness.
- Fade a music track in and out.
- Lower background audio before you mix it under a voice.
- Boost a quiet recording.

## Quick start
### Add the node

Press Tab on the canvas and choose **Audio › Edit Audio › Adjust Volume**.

### Wire the media

Wire an audio node or a video node into the **Media** input.

### Set the level and the fades

Open the settings panel. Set **Volume (%)**, or turn on **Normalize**. Add a **Fade In (s)** and a **Fade Out (s)** if you want them.

### Run it

Click **Run** on the node. For audio, the result appears on the **Audio** output. For a video, it appears on the **Video** output.

Workflow: The music is lowered and faded out, then mixed under a voiceover.

- Suno Create Music → Adjust Volume (media)
- Adjust Volume → Mix Audio (audio)
- Text to Speech → Mix Audio (audio)

## Input and output
| Input | Accepts | What it does |
| --- | --- | --- |
| **Media** | Audio and video nodes | The audio track, or the video whose sound you want to change. |

The output follows the input. For audio, the output is **Audio**. For a video, the output is **Video**: the same video with its sound adjusted.

## Settings
| Setting | What it does |
| --- | --- |
| **Volume (%)** | From 0 to 200. The default is 100, the original level. |
| **Normalize** | Levels the sound to a standard loudness. Off by default. When on, the Volume value is ignored. |
| **Fade In (s)** | A fade-in at the start, from 0 to 10 seconds. The default is 0. |
| **Fade Out (s)** | A fade-out at the end, from 0 to 10 seconds. The default is 0. |

The fades are applied after the volume change.

## Tips
- **Normalize mixed sources.** Audio from different sources, such as several Text to Speech clips, plays at a consistent level with **Normalize** on.
- **Stay at or below 100%.** Higher values can clip.
- **Use short fades.** Fades of 0.5 to 1 second give a smooth start and end.
- **Balance before you mix.** Set the level of each source here, then layer them with [Mix Audio](https://nodaro.ai/docs/nodes/audio/mix-audio). To balance several tracks in one place, set per-track volumes in Mix Audio.

## From the API
`POST /v1/adjust-volume` takes `audioUrl` or `videoUrl`, plus the optional `volume`, `normalize`, `fadeIn` and `fadeOut`. See [Voice and media](https://nodaro.ai/docs/developers/api/voice-and-media).

## Frequently asked questions

### Does Normalize work together with the Volume setting?

No. When Normalize is on, the node levels the audio to a standard loudness and ignores the Volume value.

### Can I change the volume of a video?

Yes. Wire the video into the Media input. The node returns the same video with its sound adjusted, on a Video output.

### How long can a fade be?

Up to 10 seconds for the fade-in and 10 seconds for the fade-out. Short fades of 0.5 to 1 second give a smooth start and end.

### Can I make quiet audio louder?

Yes, up to 200%. Above 100% the sound can clip, so try Normalize first for recordings of uneven loudness.