&lowlatency

Enables a preset of settings optimized for ultra-low latency streaming

General Option! (&push, &view, &room)

Aliases

• &ll

• &ultralow

Details

The &lowlatency parameter applies a collection of settings designed to minimize end-to-end latency in VDO.Ninja streams. It targets audio processing delays, packet timing, buffering, and WebAudio pipeline overhead.

This is ideal for:

• Musicians needing ultra-low latency for remote jamming

• IEM (in-ear monitor) applications

• Real-time audio monitoring scenarios

• Any use case where minimizing delay is critical

What it configures

Setting	Value	Effect
echoCancellation	false	Removes ~30-50ms processing delay
autoGainControl	false	Removes ~10-20ms processing delay
noiseSuppression	false	Removes ~10-20ms processing delay
ptime	10	10ms audio packets (vs 20ms default)
minptime	10	Minimum 10ms packets
maxptime	20	Caps packet growth
noFEC	true	No forward error correction overhead
cbr	1	Constant bitrate (predictable timing)
buffer	0	Minimal jitter buffer
audioBuffer	0	Minimal audio buffer
sync	0	No A/V sync delay
disableWebAudio	true	Bypasses WebAudio pipeline
audioLatency	10	10ms AudioContext latency hint

Override behavior

All settings applied by &lowlatency can be individually overridden by explicit URL parameters. The explicit parameter takes precedence:

&lowlatency&buffer=100   → uses buffer=100, not 0
&lowlatency&aec=1        → enables echo cancellation
&lowlatency&vbr          → uses VBR instead of CBR

This allows you to use &lowlatency as a baseline and fine-tune specific settings as needed.

Usage examples

?lowlatency&push=xxx                    # Basic low-latency push
?ll&proaudio&push=xxx                   # Low-latency + stereo audio
?ultralow&codec=pcm&push=xxx            # Ultra-low with PCM (higher bandwidth)
?ll&view=xxx&novideo                    # Low-latency audio-only viewing
```<div data-gb-custom-block data-tag="hint" data-style='warning'>Since echo cancellation is disabled, **headphones are required** to prevent feedback loops. Without headphones, the remote audio will be picked up by your microphone and sent back.</div><div data-gb-custom-block data-tag="hint" data-style='info'>For the absolute lowest latency, consider combining `&lowlatency` with:
- [`&novideo`](../advanced-settings/video-parameters/and-novideo.md) to eliminate video sync overhead
- [`&codec=pcm`](../advanced-settings/view-parameters/codec.md) for uncompressed audio (requires more bandwidth)
- A wired Ethernet connection (Wi-Fi adds latency variability)
- [Electron Capture](../steves-helper-apps/electron-capture.md) for playback, which now supports ASIO audio devices on Windows for even lower audio latency</div>## Technical background

WebRTC audio processing (echo cancellation, auto-gain, noise suppression) introduces processing delays. The browser's jitter buffer adds additional delay to smooth out network variations. The WebAudio API pipeline can add further latency.

By disabling these features and minimizing buffers, `&lowlatency` can achieve significantly lower end-to-end latency at the cost of:
- Requiring headphones (no echo cancellation)
- Potentially more audio glitches on unstable connections (smaller buffers)
- Less tolerance for network jitter (no FEC, minimal buffering)

### References

For more technical background on WebRTC latency optimization:
- [Reducing Latency in WebRTC](https://bloggeek.me/reducing-latency-webrtc/)
- [CBR vs VBR](https://antmedia.io/cbr-vs-vbr/)
- [WebRTC Media Resilience](https://bloggeek.me/webrtc-media-resilience/)

## Related<div data-gb-custom-block data-tag="content-ref" data-url='../guides/lowest-audio-latency-possible.md'>[lowest-audio-latency-possible.md](../guides/lowest-audio-latency-possible.md)</div><div data-gb-custom-block data-tag="content-ref" data-url='../advanced-settings/view-parameters/buffer.md'>[buffer.md](../advanced-settings/view-parameters/buffer.md)</div><div data-gb-custom-block data-tag="content-ref" data-url='../advanced-settings/view-parameters/sync.md'>[sync.md](../advanced-settings/view-parameters/sync.md)</div><div data-gb-custom-block data-tag="content-ref" data-url='and-audiolatency.md'>[and-audiolatency.md](and-audiolatency.md)</div><div data-gb-custom-block data-tag="content-ref" data-url='../advanced-settings/view-parameters/and-ptime.md'>[and-ptime.md](../advanced-settings/view-parameters/and-ptime.md)</div><div data-gb-custom-block data-tag="content-ref" data-url='../advanced-settings/audio-parameters/and-proaudio.md'>[and-proaudio.md](../advanced-settings/audio-parameters/and-proaudio.md)</div>