# Audio mixing in HyperFrames (/hyperframes-audio)

/hyperframes-audio is a Claude Code skill in the Video & Motion section. It is maintained by heygen-com and published under the Apache-2.0 license. Mixes audio already placed in a composition: fades, volume, ducking music under a voiceover, effects such as EQ or reverb, and multi-track buses.

- Web version: https://skills.sgomez.dev/en/s/hyperframes-audio
- Section: [Video & Motion](https://skills.sgomez.dev/en/video.md)
- Author: heygen-com
- License: Apache-2.0
- Source: https://github.com/heygen-com/hyperframes/tree/5969c6894ba42f9cc55941503be51af2e96e2b3a/skills/hyperframes-audio
- Updated 28 Sept 2026

## How to ask for it

- `Fade out the background music smoothly at the end of the video`
- `Duck the music when the voiceover comes in and bring it back up after`
- `Add compression and reverb to the voice track in this composition`

## Install

macOS · Linux:

```
curl -fsSL https://raw.githubusercontent.com/sgomez-dev/claude-skills/main/install.sh | bash
```

Windows:

```
irm https://raw.githubusercontent.com/sgomez-dev/claude-skills/main/install.ps1 | iex
```


## Author's description

Use when audio already placed in a HyperFrames composition needs to be mixed: fade-in/fade-out, crossfade, track gain or volume, volume automation, ducking, a music bed that fights a voiceover (voiceover carve), effects on a track (EQ, compressor, limiter, gate, saturation, delay, reverb, chorus, phaser, bitcrush), automation envelopes drawn on a track's volume or any effect parameter, or one submix bus carrying a chain, a fader and an automation clock for several tracks at once (`<hf-audio-group>`). Don't use for sourcing or generating audio — finding BGM, SFX, or making a voiceover is `/media-use`. Don't use for clip timing or track layout, which is `/hyperframes-core`.

- [How we review this](https://skills.sgomez.dev/en/methodology.md)