# \&sync

Viewer-Side Option! ([`&view`](/advanced-settings/mixer-scene-parameters/view.md), [`&scene`](/advanced-settings/mixer-scene-parameters/scene.md), [`&room`](/advanced-settings/setup-parameters/room.md))

## Options

Example: `&sync=50`

| Value           | Description |
| --------------- | ----------- |
| (integer value) | value in ms |

## Details

`&sync=X` will set an offset in milliseconds for the audio stream.

[`&buffer=0`](/advanced-settings.md#buffer) or `&sync=0` will do the same thing: it will try to auto-sync video and audio.

Tiny negative offsets *may* work, like `&sync=-25` is possible, but large negative offsets will not work.

No clue if it is supported in OBS or not; works in Chromium/Chrome v76 or newer tho. Useful if the video device has a large delay that needs compensating for that isn't fixed automatically.

`&sync=500` without the [`&buffer`](/advanced-settings/video-parameters/buffer.md) command also will only add an audio delay; there will be no additional video buffer or delay.

{% hint style="info" %}
Using may stop [Echo Cancellation](/advanced-settings/audio-parameters/aec.md) from working.
{% endhint %}

## Related

{% content-ref url="/pages/-MZdtO5YNVAt2R8vG5Us" %}
[\&buffer](/advanced-settings/video-parameters/buffer.md)
{% endcontent-ref %}

{% content-ref url="/pages/h2JmCAiOBzHayGu72EVo" %}
[\&buffer2](/advanced-settings/video-parameters/and-buffer2.md)
{% endcontent-ref %}


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.vdo.ninja/advanced-settings/audio-parameters/sync.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.