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

# Audio Meter Overlay

> Burn a live level (VU) meter onto a video that moves with its own audio — great for showing loudness on screen.

<Frame caption="Audio Meter Overlay · screenshot coming soon">
  <img src="https://mintcdn.com/comfytv/dMkMxJDZdIo4YzAU/images/nodes/_placeholder.svg?fit=max&auto=format&n=dMkMxJDZdIo4YzAU&q=85&s=b54171099e5b02d4313fe581171ebbcc" alt="Audio Meter Overlay" width="800" height="450" data-path="images/nodes/_placeholder.svg" />
</Frame>

## What this node does

**Audio Meter Overlay** renders an animated audio-level meter into a video, reading the video's own audio track and drawing a moving bar in a corner of the frame. The result is a new video with the meter composited on top — handy for reaction videos, tutorials, or any clip where you want the audio level visible.

It takes a `COMFYTV_VIDEO` (which must have audio) and outputs a `COMFYTV_VIDEO`. It has a ▶ **Run** (FFmpeg renders the overlay).

To feed native ComfyUI `IMAGE`/`VIDEO` in or out, insert a **Bridge** — see [bridges.md](https://github.com/jtydhr88/ComfyTV/blob/main/docs/bridges.md).

## When to use it

* Show a visible loudness meter on a talking-head or music clip.
* Add a broadcast-style level indicator to a stream recording.
* Give viewers a visual cue of audio dynamics.

## Parameters

### meter\_w

Meter width in pixels. Range **80 to 1920**, default **400**.

### meter\_h

Meter height in pixels. Range **8 to 120**, default **20**.

### corner

Which corner of the frame the meter sits in: `bottom-left` (default), `bottom-right`, `top-left`, or `top-right`.

### margin

Padding in pixels between the meter and the frame edges. Range **0 to 200**, default **16**.

## Outputs

| Output    | Type            | Meaning                                       |
| --------- | --------------- | --------------------------------------------- |
| **video** | `COMFYTV_VIDEO` | The input video with the level meter overlaid |

## Tips

* The meter reads the video's embedded audio — make sure the clip actually has an audio track, or there's nothing to display.
* Size the meter relative to your frame: 400×20 suits 1080p; scale up for 4K.
* Keep **margin** clear of any lower-thirds or captions so the meter doesn't overlap them.

## Related nodes

* **Audio Reactive** — drive scene parameters from audio energy instead of just displaying a meter.
* **Audio Beats & Notes** — detect beats/onsets for on-beat visual events.