Nodaro DocsAdjust 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.
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.
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.
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. The node shows the output for the media of its last run, and the Audio output before its first run.
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. 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.
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.
Related
Mix Audio
Audio FX
Text to Speech
Merge Video & Audio
Last updated on
Mix Audio
Layer several audio tracks into one file, with a volume from 0 to 200% for each, and let music dip automatically under a voiceover while it speaks.
Audio FX
Put a voice in a room, a car or a church with a reverb, or add a telephone, megaphone or echo effect. A flat 22 credits per run, plus custom delay and EQ.