# \&micsamplerate

Sender-Side Option! ([`&push`](/advanced-settings/setup-parameters/push.md))

## Aliases

* `&msr`

## Options

Example: `&micsamplerate=48000`

| Value        | Description                                  |
| ------------ | -------------------------------------------- |
| Integer (Hz) | Target mic capture sample rate (e.g., 48000) |

## Details

* Capture constraint: requests `getUserMedia({ audio: { sampleRate } })` for the microphone.
* Typical values: 48000 (default), 44100, 32000, 16000. Browsers may clamp or ignore unsupported values.
* Encoding: Opus encodes at 48kHz internally; this setting mainly affects capture and any pre-encode processing.
* Do not confuse with:
  * [`&outboundsamplerate`](https://github.com/steveseguin/vdo.ninja/blob/gitbook/advanced-settings/audio-parameters/and-outboundsamplerate.md): WebAudio processing context sample rate (publisher-side).
  * [`&samplerate`](/advanced-settings/audio-parameters/and-samplerate.md): Playback sample rate (viewer-side PCM).

## Related

{% content-ref url="/pages/UCMPXKuE2G5tPTvDbjBq" %}
[\&micsamplesize](/advanced-settings/audio-parameters/and-micsamplesize.md)
{% endcontent-ref %}

{% content-ref url="/pages/VVcfb7xNYaY8qMRIduao" %}
[\&audiocodec](/advanced-settings/audio-parameters/minptime-1.md)
{% endcontent-ref %}

{% content-ref url="/pages/-MZOObrpt8\_eDO0u8HXs" %}
[\&noaudioprocessing](/advanced-settings/audio-parameters/noaudioprocessing.md)
{% endcontent-ref %}


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