# \&micsamplerate

Sender-Side Option! ([`&push`](https://docs.vdo.ninja/advanced-settings/setup-parameters/push))

## 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`](https://docs.vdo.ninja/advanced-settings/audio-parameters/and-samplerate): Playback sample rate (viewer-side PCM).

## Related

{% content-ref url="and-micsamplesize" %}
[and-micsamplesize](https://docs.vdo.ninja/advanced-settings/audio-parameters/and-micsamplesize)
{% endcontent-ref %}

{% content-ref url="minptime-1" %}
[minptime-1](https://docs.vdo.ninja/advanced-settings/audio-parameters/minptime-1)
{% endcontent-ref %}

{% content-ref url="noaudioprocessing" %}
[noaudioprocessing](https://docs.vdo.ninja/advanced-settings/audio-parameters/noaudioprocessing)
{% endcontent-ref %}