# How to get lowest audio latency possible

If you are a musician looking to jam out with a friend, you should be able to achieve under 40ms of latency using [VDO.Ninja](https://vdo.ninja) if both you and them have a good Internet connections. This implies being directly connected via wired Ethernet with low packet loss, rather than via Wi-Fi or cellular.

## Quick start with \&lowlatency

The easiest way to achieve low latency is using the [`&lowlatency`](https://docs.vdo.ninja/advanced-settings/audio-parameters/and-lowlatency) parameter (aliases: `&ll`, `&ultralow`), which configures multiple optimizations automatically:

```
https://vdo.ninja/?push=MystreamID123&view=TheirStreamID123&lowlatency&novideo
```

This single parameter disables audio processing (echo cancellation, auto-gain, noise suppression), sets optimal packet timing (10ms ptime), minimizes buffers, uses constant bitrate, and bypasses the WebAudio pipeline.

## Manual configuration

For fine-grained control, here's a manual example of settings optimized for low-latency audio-only two-way communications. I find most of the latency with a setup like this is outside the scope of VDO.Ninja; so the sound card settings, the capture device, how far away I am from the mic / speakers, etc.

```
https://vdo.ninja/?push=MystreamID123&view=TheirStreamID123&aec=0&agc=0&denoise=0&ab=16&enhance&ptime=10&maxptime=10&novideo&noap
```

Looking at the link, let's explore:

[`&aec=0`](https://docs.vdo.ninja/advanced-settings/audio-parameters/aec) disables the echo cancellation; this implies we will need to use headphones

[`&agc=0`](https://docs.vdo.ninja/advanced-settings/audio-parameters/autogain) will disable auto-gain, which is preferable if streaming music

[`&denoise=0`](https://docs.vdo.ninja/advanced-settings/audio-parameters/and-denoise) will disable the noise filter, which is ideal with music applications.

[`&ab=16`](https://docs.vdo.ninja/advanced-settings/audio-parameters/audiobitrate) gives us a constant audio bitrate of 16-kbps. Consistency will ensure more reliable latencies, and 16-kbps is so light-weight it shouldn't be boggled down on bad connections. You can increase this value depending on the audio fidelity that you want, but higher could introduce more latency.

[`&enhance`](https://docs.vdo.ninja/advanced-settings/settings-parameters/enhance), [`&ptime=10`](https://docs.vdo.ninja/advanced-settings/audio-parameters/and-ptime), and [`&maxptime=10`](https://docs.vdo.ninja/advanced-settings/audio-parameters/and-maxptime) are advanced settings, that tell the system to prioritize audio packets and limit their size to 10ms. This is the lowest we can set them using a browser, but it might be possible to go lower if using something like the Raspberry\_Ninja hardware project that VDO.Ninja has available for advanced users.

[`&novideo`](https://docs.vdo.ninja/advanced-settings/video-parameters/and-novideo) disables video, which can make a big impact on latency, as not streaming video will free up a lot of bandwidth, but also not force the audio to stay in sync with the video. You can send the video in a second tab/session if needed, and that way, it won't try to stay in sync.

[`&noap`](https://docs.vdo.ninja/advanced-settings/audio-parameters/noaudioprocessing) just disables any of the advanced web-audio processing, such as compression, gain, level-meters, and panning. This will free up some milliseconds of latency in some cases,

Without much effort, you should be able to achieve 40-milliseconds of latency, or less, with this setup. Achieving between 20- to 30-ms is feasible in cases, but expectations of under 20-ms will require significantly more investment.

{% hint style="info" %}
For playback on Windows, consider using the [Electron Capture](https://docs.vdo.ninja/steves-helper-apps/electron-capture) app which now supports ASIO audio devices, providing even lower audio output latency compared to standard Windows audio.
{% endhint %}

## Related

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


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