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

# Demux · Silent Video

> Strip the audio track, keep video → silent `COMFYTV_VIDEO`. **PyAV** — pairs with **Demux · Audio Track**.

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  <img src="https://mintcdn.com/comfytv/dMkMxJDZdIo4YzAU/images/nodes/_placeholder.svg?fit=max&auto=format&n=dMkMxJDZdIo4YzAU&q=85&s=b54171099e5b02d4313fe581171ebbcc" alt="Demux · Silent Video" width="800" height="450" data-path="images/nodes/_placeholder.svg" />
</Frame>

## What this node does

**Demux · Silent Video** removes audio from the source and writes a **silent** video file. Pairs with **Demux · Audio Track** on the same source: one takes sound, one takes mute picture.

Toolbar 🔀 **Demux** creates **both** nodes wired together.

## When to use it

* Drop original audio, replace with **Audio Stage** output
* Picture-only path while IA2V audio comes elsewhere
* Edit video (Clip / Crop) without touching audio twice

## How it works

* **Stage** + **▶ Run**; PyAV `silence_video`.
* Video fps / resolution unchanged; audio track removed.
* Standard snapshot model.

## Types

| Type                   | Notes        |
| ---------------------- | ------------ |
| `COMFYTV_VIDEO` in/out | URL snapshot |

[bridges.md](https://github.com/jtydhr88/ComfyTV/blob/main/docs/bridges.md)

## Parameters

### video

Source `COMFYTV_VIDEO`. Required.

## Outputs

| Output    | Type            | Downstream                      |
| --------- | --------------- | ------------------------------- |
| **video** | `COMFYTV_VIDEO` | Clip, Crop, Resize, Video Stage |

## Step by step

1. Run upstream video.
2. Click 🔀 **Demux** or add **Silent Video** manually.
3. **▶ Run** for silent clip.
4. Handle audio separately; mux via external tools or future Timeline.

## Full guides (recommended reading)

> This page covers **one node only**. For end-to-end workflows, multi-stage pipelines, type conversion, and design rationale, see the [ComfyTV user guides](https://github.com/jtydhr88/ComfyTV/tree/main/docs) on GitHub:

| Guide                                                                                    | Contents                                                                |
| ---------------------------------------------------------------------------------------- | ----------------------------------------------------------------------- |
| [Getting started](https://github.com/jtydhr88/ComfyTV/blob/main/docs/getting-started.md) | Install, canvas basics, per-stage Run, snapshots, Project, Image Picker |
| [Video and audio](https://github.com/jtydhr88/ComfyTV/blob/main/docs/video-and-audio.md) | Clip, crop, resize, extract frame, demux vs Generate video              |

## Repository and workflows

| Resource               | Link                                                                                                                                             |
| ---------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------ |
| **GitHub repository**  | [https://github.com/jtydhr88/ComfyTV](https://github.com/jtydhr88/ComfyTV)                                                                       |
| **User guides index**  | [https://github.com/jtydhr88/ComfyTV/tree/main/docs](https://github.com/jtydhr88/ComfyTV/tree/main/docs)                                         |
| **Built-in workflows** | [https://github.com/jtydhr88/ComfyTV/tree/main/workflows](https://github.com/jtydhr88/ComfyTV/tree/main/workflows)                               |
| **Model checklist**    | [https://github.com/jtydhr88/ComfyTV/blob/main/docs/models.md](https://github.com/jtydhr88/ComfyTV/blob/main/docs/models.md)                     |
| **Custom workflows**   | [https://github.com/jtydhr88/ComfyTV/blob/main/docs/custom-workflows.md](https://github.com/jtydhr88/ComfyTV/blob/main/docs/custom-workflows.md) |

## FAQ

**Q: Chain with Clip?**\
A: Yes — order depends on whether you need source audio before demux.

**Q: IA2V with silent video?**\
A: Yes — wire **audio** from another `COMFYTV_AUDIO` to **Video Stage**.

**Q: Re-encode?**\
A: Usually remux/light re-encode to drop audio; quality largely preserved.

## Related nodes

* **Demux · Audio Track**
* **Video Clip** / **Video Stage**