&stereo
Sets the audio mode to stereo and changes default audio settings to improve audio quality
&s
Adding
&stereo to the URL will apply audio-specific setting presets. For inbound audio streams, it can be used to increase the audio bitrate from 32-kbps to 256-kbps. For outbound streams, it will disable echo-cancellation and noise-reduction. When applied to both the outbound and inbound sides of an audio stream, it will also enable stereo audio if available.There are a variety of different modes that apply different combination of presets. You can also override any preset with other URL parameters, such as
&audiobitrate, &outboundaudiobitrate, and &aec=1.If using a microphone, wearing headphones is strongly recommended if using this parameter, along with knowledge of correctly setting your microphone gain settings. Echo and feedback issues can occur if this option is used incorrectly.
When using this option in a group room, you can't simply just apply this URL option to the director and have it apply to all guests. You will need to add the flag to each guest and to each scene-link to enable the pro-audio stereo mode. Depending on the value you pass to the URL parameter, you will get slightly different outcomes.
Value | Description |
|---|---|
(no value given) | It behaves like 3 or 1, depending on if you are a guest or not |
0 | will try to down-mix your mic to mono. Does not enable any pro-audio settings |
1 | enables it for both push and view (if used on both links) |
2 | enables it just for viewing requests and not publishing requests |
3 | enables it for just publishing requests and not viewing requests |
4 | enables 5.1-multichannel audio support (Experimental and may require a Chrome flag to be set) |
5 | This is the default if nothing is set. It behaves like 3 or 1, depending on if you are a guest or not |
&stereo and &proaudio currently do the same thing, so they are just aliases of each other. When used, they can be used to setup the audio transfer pipeline to allow for unprocessed, high-bitrate, stereo audio.Use of this option is generally for advanced users who understand the consequences of enabling this. High-quality audio can cause audio clicking, reduced video quality, feedback issues, low volume levels, and higher background noise levels.
For stereo-channel support to work, you will want both the viewer AND the publisher of the stream to have the respective
&stereo flag add to their URL.The most powerful mode is
stereo=1 , which if enabled:- Turns off noise-cancellation when publishing
- Turns off echo-cancellation when publishing
If the parameter is used, but left without a value, it is treated as a special case (either 1 or 3). Please see follow link for more info:
Option | alias | aec | autogain | denoise | stereo playback | stereo output | default ab in | max ab out | limited ab in | cbr |
|---|---|---|---|---|---|---|---|---|---|---|
&stereo=0 | off | on | on | on | off | no | 32 | 510 | 510 | no |
&stereo=1 | both | off | off | off | on | yes | 256 | 510 | 510 | yes |
&stereo=2 | in | on | on | on | on | no | 256 | 510 | 510 | yes |
&stereo=3 | out | off | off | off | off | yes | 32 | 510 | 510 | no |
&stereo=4 | multi | off | off | off | on (5.1) | yes | 256 | 510 | 510 | yes |
The default mode when
&stereo is used alone is &stereo=5, which acts like either &stereo=3 or &stereo=1, depending on whether the link its applied to is a room guest or not. This option will make the most sense for most users.Option | Context | alias | aec | autogain | denoise | stereo playback | stereo output | default ab in | max ab out | limited ab in | cbr |
|---|---|---|---|---|---|---|---|---|---|---|---|
&stereo=5 | Regular/OBS | 5 | off | off | off | on | yes | 256 | 510 | 510 | yes |
&stereo=5 | Director | 5 | off | off | off | on | yes | 32 | 510 | 510 | no |
&stereo=5 | Room Guest | 5 | off | off | off | off | yes | 32 | 510 | 510 | no |
Option | alias | aec | autogain | denoise | stereo playback | stereo output | default ab in | max ab out | limited ab in | cbr |
|---|---|---|---|---|---|---|---|---|---|---|
iOS devices | | on | on | on | off | off | 32 | 32 | 32 | no |
Just for reference, the audio codec used by VDO.Ninja is OPUS (48khz), which can provide high-fidelity music transfer when the audio bitrate is set to 80-kbps per channel or higher. The default audio bitrate used is 32-kbps VBR, which is sufficient for most voice applications. Increasing the audio bitrate to a near-lossless 500-kbps or something may end up causing more problems than anything, but that is supported if needed.
Last modified 2mo ago