Audio Filters & Bitrate

A guide on how to use Audio Filters & Bitrate in VDO.Ninja

Filter Options

There are several Audio Filters in VDO.Ninja. Some of them are turned on by default, some are not. To activate these Audio Filters you have to add them to the source side. So for example: https://vdo.ninja/?push (for a basic push link) https://vdo.ninja/?room=SOMEROOMNAME (for a guest in a room)

Name	Parameter	By default	Change the default setting
Outbound Audio Bitrate	&oab	32-kbps	&oab=XX (0-510 kbps)
Pro Audio	&proaudio	off	&proaudio
Master Gain	&audiogain	100%	&audiogain=XX (0-200 %)
Auto Gain Control	&autogain	on	&autogain=0
Echo Cancellation	&echocancellation	on	&echocancellation=0
Noise Suppression	&denoise	on	&denoise=0
Noise Gating	&noisegate	off	&noisegate
Compressor	&compressor	off	&compressor
Limiter	&limiter	off	&limiter
Equalizer	&equalizer	off	&equalizer
Lowcut	&lowcut	off	&lowcut=XX (in hz)
Microphone Delay	&micdelay	0-ms	&micdelay=XX (in ms)

• Adding &proaudio to a source link disables Auto Gain, Echo Cancellation and Noise Suppression, sets the audio to stereo and the possible outbound audio bitrate to 256-kbps

• the &proaudio parameter is the same as the &stereo parameter

Default settings of VDO.Ninja:

There is a very useful google sheet with a matrix for the &proaudio (&stereo) parameter:

https://docs.google.com/spreadsheets/d/1onfIh1hNR1Gh_mthkhmezzWNUMYKMGKPrwx7T428_hc/edit#gid=0

Audio Bitrate

Options to control the audio bitrate:

1. Add &proaudio to the source AND view link to get 256-kbps (echo cancellation, noise suppression and auto gain are then DISABLED)

2. Add &proaudio to the view link to get 256-kbps (echo cancellation, noise suppression and auto gain are still ENABLED)

3. Add &oab=100 to the source link to get 100-kbps

4. Add &audiobitrate=200 to the view link to get 200-kbps

• &proaudio overrides the bitrate of &oab if set on the source AND view link or only on the view link -> you get 256-kbps.

• &audiobitrate overrides &proaudio and &oab

This also works for &room on the source side and &scene on the view side if you are in a room.

Some examples:

1) https://vdo.ninja/?push=SOMESTREAMID https://vdo.ninja/?view=SOMESTREAMID&proaudio -> 256-kbps

2) https://vdo.ninja/?push=SOMESTREAMID&oab=100 https://vdo.ninja/?view=SOMESTREAMID&audiobitrate=200 -> 200-kbps

3) https://vdo.ninja/?push=SOMESTREAMID&proaudio https://vdo.ninja/?view=SOMESTREAMID -> 32-kbps

4) https://vdo.ninja/?push=SOMESTREAMID&proaudio https://vdo.ninja/?view=SOMESTREAMID&audiobitrate=96 -> 96-kbps

To see the audio bitrate Right-Click -> Show Stats or Control (Command) + Left-Click on a video source