Ninja Docs
  • What is VDO.Ninja?
    • How does it work
    • Use cases
    • Why use VDO.Ninja over other solutions?
    • Sponsor ❤
  • Getting started
    • VDO.Ninja basics
    • What are stream IDs?
    • The power of the URL parameter
    • Multi-Person Chat
    • Rooms
    • Even higher quality video
    • Mobile phone camera into webcam
    • Cheat sheet of basic parameters
  • Steve's helper apps & tools
    • Electron Capture
      • Documentation
    • Social Stream Ninja
      • Documentation reference
    • Meshcast.io
    • Caption.Ninja
    • Raspberry.Ninja
      • Documentation
    • Mixer App
    • WHIP and WHEP tooling
    • Versus.cam
    • Speed Test
    • Comms
    • Teleprompter Tool
    • LUT maker for color grading
    • Native mobile app versions
    • VDO Applications
    • Tech Demonstrations
    • Invite Link Generators
    • Community contributed tools
    • Mic test
  • Guides
    • Cheat Sheets
    • Common questions re: Rooms
    • Video bitrate for push/view links
    • Video bitrate in rooms
    • How to get permanent links
    • Basic hotkeys
    • MIDI, API and WebHID support
    • Hardware-accelerated video encoding
    • Audio Filters & Bitrate
    • Options to record streams
    • External guides and how-tos
    • How to lock the resolution
    • How to use VDO.Ninja as a webcam for Google Hangouts, Zoom, and more
    • How to capture without browser sources
    • How to control bitrate/quality
    • How to selectively allow access
    • Stream Scheduling and Promotion
    • How to send the audio/video output of one OBS to another OBS using VDO.Ninja
    • How to mirror a video while Full-Screen - For iPads and Teleprompters
    • How to capture an application's audio
    • How to control VDO.Ninja with Touch Portal
    • How to publish from OBS into VDO.Ninja
    • How to screen share your iPhone/iPad
    • How to get iPhones to output 1080p Videos
    • How to stream into Zoom without OBS
    • How to connect a smartphone to computer via USB
    • How to edit an invite after sending it
    • How to get highest video quality (for an interview)
    • How to stream 4K video using VDO.Ninja
    • How to get lowest audio latency possible
    • How to share webcam from inside OBS
    • How to publish to Facebook Live
    • How to embed VDO.Ninja into a site with iFrames
      • Detecting User Joins / Disconnects
    • How to use the green screen just locally
    • How to connect a GoPro to VDO.Ninja
    • How to install RaspNinja on Jetson
    • How to transfer guests to other rooms
    • How to set up a simple chat room
    • How to screen share in 1080p
    • How to control PowerPoint remotely with VDO.Ninja
    • How to improve quality of the native app
    • How to stream transparent video
    • Recommended OBS WHIP settings
    • How to use VDO.Ninja on a website
    • Keep Mic Active in Background on Android Browser
    • PlayStation or Xbox to VDO.Ninja
    • Enabling WebRTC Sources in OBS
    • Picking the right microphone
    • Set Up Proper Lighting
    • System requirements for streaming
    • From OBS to VDO.Ninja using WHIP
    • Deploy your own Meshcast-like service
    • Windows TTS Audio Capture Methods for OBS
    • Syncing USB audio with VDO.Ninja -> OBS Virtual Camera
  • Advanced Options (URL Parameters)
    • Most common Parameters
      • &push
      • &quality
      • &videodevice
      • &audiodevice
      • &effects
      • &label
      • &meshcast
      • &view
      • &videobitrate
      • &audiobitrate
      • &codec
      • &novideo
      • &noaudio
      • &showlabels
      • &room
      • &director
      • &proaudio
      • &scene
      • &roombitrate
      • &password
      • &broadcast
    • Setup Parameters
      • &push
      • &room
      • &password
      • &hash
      • &e2ee
      • &label
      • &labelsuggestion
      • &permaid
      • &group
      • &groupview
      • &groupaudio
      • &datamode
      • &audiooutput
      • &sink
      • &audiodevice
      • &videodevice
      • &vdo
      • &device
      • &miconly
      • &miconlyoption
      • &safemode
      • &autostart
      • &easyexit
      • &webcam
      • &webcam2
      • &screenshare
      • &screenshare2
      • &website
      • &fileshare
      • &intro
      • &host
      • &tips
      • &welcome
      • &welcomeb64
      • &welcomeimage
      • &hangupmessage
      • &humb64
      • &groupmode
      • &audience
    • Camera Parameters
      • &whitebalance
      • &exposure
      • &saturation
      • &sharpness
      • &contrast
      • &brightness
    • Video Parameters
      • &blind
      • &quality
      • &width
      • &height
      • &aspectratio
      • &contenthint
      • &mediasettings
      • &noscale
      • &fps
      • &maxframerate
      • &effects
      • &effectvalue
      • &imagelist
      • &avatar
      • &fullscreen
      • &showpreview
      • &minipreview
      • &minipreviewoffset
      • &largepreview
      • &nopreview
      • &hideguest
      • &videomute
      • &ptz
      • &webp
      • &webpquality
      • &scale
      • &viewwidth
      • &viewheight
      • &dpi
      • &sharper
      • &codec
      • &h264profile
      • &buffer
      • &buffer2
      • &fadein
      • &broadcast
      • &directoronly
      • &showonly
      • &novideo
      • &nodirectorvideo
      • &slideshow
      • &zoom
    • Video Bitrate Parameters
      • &outboundvideobitrate
      • &maxvideobitrate
      • &limittotalbitrate
      • &controlroombitrate
      • &roombitrate
      • &maxbandwidth
      • &videobitrate
      • &totalscenebitrate
      • &totalroombitrate
      • &totalbitrate
      • &zoomedbitrate
      • &optimize
    • Audio Parameters
      • &proaudio
      • &stereo
      • &mutespeaker
      • &deafen
      • &noaudioprocessing
      • &audiodevice
      • &echocancellation
      • &audiogain
      • &autogain
      • &compressor
      • &denoise
      • &distort
      • &equalizer
      • &limiter
      • &lowcut
      • &noisegate
      • &noisegatesettings
      • &audiocontenthint
      • &audiolatency
      • &micdelay
      • &mute
      • &automute
      • &outboundaudiobitrate
      • &inputchannels
      • &monomic
      • &audiooutput
      • &sink
      • &volume
      • &volumecontrol
      • &audiobitrate
      • &vbr
      • &mono
      • &noaudio
      • &nodirectoraudio
      • &panning
      • &sync
      • &samplerate
      • &channels
      • &channeloffset
      • &playchannel
      • &ptime
      • &maxptime
      • &minptime
      • &audiocodec
      • &dtx
      • &nofec
    • Mixer/Scene Parameters
      • &solo
      • &view
      • &include
      • &exclude
      • &layout
      • &activespeaker
      • &activespeakerdelay
      • &order
      • &slots
      • &fakeguests
      • &randomize
      • &cover
      • &43
      • &portrait
      • &square
      • &forceviewerlandscape
      • &animated
      • &manual
      • &locked
      • &poster
      • &hideplaybutton
      • &motiondetection
      • &scene
      • &scenetype
      • &autoadd
      • &hiddenscenebitrate
      • &preloadbitrate
      • &waitimage
      • &waitmessage
      • &waittimeout
      • &viewslot
    • Settings Parameters
      • &language
      • &remote
      • &controlobs
      • &allowedscenes
      • &stats
      • &sticky
      • &clearstorage
      • &disablehotkeys
      • &showlist
      • &nopush
      • &hidehome
      • &hidetranslate
      • &clock
      • &clock24
      • &timer
      • &powerpoint
      • &widget
      • &token
      • &transcribe
      • &signalmeter
      • &batterymeter
      • &consent
      • &prompt
      • &hands
      • &notify
      • &r2d2
      • &directorchat
      • &maxconnections
      • &maxviewers
      • &chunked
      • &retransmit
      • &rampuptime
      • &sensor
      • &sensorfilter
      • &postimage
      • &postinterval
      • &slot
      • &closedcaptions
      • &nocaptionlabels
      • &enhance
      • &bitratecutoff
      • &cutscene
      • &statsinterval
      • &keyframerate
      • &maxpublishers
      • &showconnections
      • &obsfix
      • &streamlabs
      • &getfaces
      • &nochunked
    • Buttons and Control Bar Parameters
      • &autohide
      • &controlbarspace
      • &nosettings
      • &nomicbutton
      • &nospeakerbutton
      • &novideobutton
      • &nofileshare
      • &screensharebutton
      • &nohangupbutton
      • &chatbutton
      • &bigbutton
      • &fullscreenbutton
      • &nowebsite
      • &hands
      • &videocontrols
      • &nocontrols
      • &forcecontrols
    • Design Parameters
      • &label
      • &showlabels
      • &fontsize
      • &style
      • &bgimage
      • &showall
      • &meterstyle
      • &cleanoutput
      • &cleanish
      • &css
      • &base64css
      • &js
      • &base64js
      • &mirror
      • &nomirror
      • &flip
      • &rotatewindow
      • &structure
      • &color
      • &blur
      • &border
      • &bordercolor
      • &rounded
      • &margin
      • &darkmode
      • &lightmode
      • &background
      • &chroma
      • &transparent
      • &nocursor
      • &favicon
      • &headertitle
      • &rotate
      • &grid
      • &hideheader
      • &hidemenu
      • &tally
      • &tallyoff
      • &cleanviewer
      • &obsoff
      • &pip
      • &pipall
      • &pipme
    • Director Parameters
      • &director
      • &codirector
      • &blindall
      • &cleandirector
      • &hidesolo
      • &hidecodirectors
      • &minidirector
      • &orderby
      • &queue
      • &rooms
      • &broadcasttransfer
      • &showdirector
      • &slotmode
      • &previewmode
      • &novice
      • &layouts
      • &maindirectorpassword
      • &totalroombitrate
      • &limittotalbitrate
      • &notify
      • &mutespeaker=0
      • &showconnections
      • &widget
      • &pausepreview
    • Screen-share Parameters
      • &screensharestereo
      • &screenshare
      • &screenshare2
      • &screenshareaec
      • &screenshareautogain
      • &screensharecursor
      • &screensharedenoise
      • &screensharefps
      • &screensharehide
      • &screenshareid
      • &screensharelabel
      • &screensharequality
      • &screensharecontenthint
      • &screenshareaspectratio
      • &screensharetype
      • &smallshare
      • &screensharevideoonly
      • &suppresslocalaudio
      • &prefercurrenttab
      • &selfbrowsersurface
      • &systemaudio
      • &displaysurface
      • &screensharebutton
      • &screensharebitrate
      • &sharperscreen
      • &sspaused
    • Recording Parameters
      • &record
      • &autorecord
      • &autorecordlocal
      • &autorecordremote
      • &recordcodec
      • &pcm
      • &recordmotion
      • &chunked
    • Guest queuing Parameters
      • &queue
      • &screen
      • &hold
      • &holdwithvideo
      • &queuetransfer
    • Meshcast Parameters
      • &meshcast
      • &meshcastaudiobitrate
      • &meshcastbitrate
      • &meshcastcodec
      • &mcscreensharebitrate
      • &mcscreensharecodec
      • &meshcastscale
      • &meshcastcode
      • &nomeshcast
    • WHIP Parameters
      • &whipout
      • &whipview
      • &whipoutcodec
      • &whipoutaudiobitrate
      • &whipoutvideobitrate
      • &whipoutscale
      • &whipoutscreensharecodec
      • &whipoutscreensharebitrate
      • &cftoken
      • &svc
    • Mobile Parameters
      • &facing
      • &forcelandscape
      • &forceportrait
      • &forceios
      • &notios
      • &flagship
      • &mobile
      • &notmobile
      • &app
    • API & MIDI Parameters
      • &api
        • API reference
        • API reference - AI Generated
        • Client (node) event example
      • &pie
      • &midi
      • &midiin
      • &midiout
      • &midiremote
      • &midichannel
      • &mididevice
      • &midioffset
      • &mididelay
      • &datamode
      • &postapi
    • TURN & STUN Parameters
      • &turn
      • &stun
      • &addstun
      • &icefilter
      • &proxy
      • &relay
      • &secure
      • &tcp
      • &tz
    • Parameters added in Version 24
    • Complete List of Parameters in v26
    • Upcoming Parameters
    • Other Parameters
  • Releases
    • v24
    • v23 🌱
    • v22 👑
    • v21 ❤️
    • v20 🎁
    • v19 🚀🤯
      • v19.1 - 19.4
    • v18
      • v18.3
    • v17
    • v16
      • v16.3
      • v16.4
    • v15
    • v14
    • v13
      • v13.4
    • v12
    • v10
    • v8
  • Updates
    • Updates - VDO.Ninja
    • Updates - Social Stream & Chat Overlay
      • Updates - Social Stream Standalone App
    • Updates - Electron Capture App
    • Updates - Raspberry.Ninja
    • Updates - Versus.cam
    • Updates - Mixer App
    • Updates - WHIP/WHEP
    • Updates - Native mobile apps
    • Updates - Caption.Ninja
    • Updates - Meshcast.io
    • Updates - Speed Test
    • Updates - Comms
    • Updates - Miscellaneous
  • Development Progress
  • Help!
    • Fail safes and Backups
    • Privacy and security details
      • VDO.Ninja Terms of Service
      • VDO.Ninja Privacy Policy
    • Project Contact Info
    • Where can I report a bug?
    • Where can I get support?
    • Feature Requests
    • Logos and media assets
    • What does VDO stand for?
  • Common errors and known issues
    • Can't screen capture certain games
    • ATEM not working with Firestick
    • Very old iPhone support
    • Can't select audio output on iOS
    • Screen-share is just a black video
    • Mic audio dropping out
    • Loss of audio when OBS minimized
    • Known issues
    • Echo or feedback issues
    • Works on WiFi but not on 4G
    • Can't capture an application's audio when screen-sharing
    • Can't load camera both in OBS and VDON
    • Can't select a camera lens on mobile
    • No video in OBS, just an "Add camera" button
    • Audio over VDO.Ninja isn't working
    • Loading circle shows in OBS or browser
    • Appearing then disappearing guest
    • Can't auto-start screen sharing
    • Audio Clicking / Popping / Distortion
    • Can't share my screen
    • Nothing shows up in OBS
    • Already in use or claimed errors
    • Blue spinning window
    • Cursor shows trailing or artifacting
    • Packet Loss
    • Overheating
    • Audio is delayed in OBS
    • vMix High CPU
    • OBS Virtual Camera has low FPS
    • Virtual camera not working on Mac
    • Mic stops on MacOS when OBS opens
    • Video stream looks corrupted
    • Video freezes mid-stream
    • Webcam freezes after a time
    • Is the VDO.Ninja server down?
    • Hosted your own TURN server?
    • Can't screen-share from certain devices
    • Cursor shows when screen-sharing
    • Getting “Overconstrained" Camera Error
    • Autoplay doesn't work in Chrome or vMix v77
    • Low frame rates
    • Black borders around the video in OBS
    • Mic's volume keeps changing
    • Enable Camera / Microphone permissions
    • FPS drop if app not in focus
    • Surround sound error when screen sharing with USB headset
    • Relay candidate being selected
    • Camera works in Safari; not Chrome
    • Robotic Audio Distortion
    • Can't load camera from non-SSL host
    • Camera on macOS doesn't show?
    • Can't screen share Adobe Lightroom
    • Decklink support?
    • iOS audio stops during phone calls
    • Can't turn off echo-cancellation on macOS
    • Video lag grows over time
    • Can't connect unless via VPN
    • Improving vMix performance
  • Platform specific issues
    • Android
    • macOS
    • iOS (iPhone/iPad)
    • Firefox
    • Opera GX
  • Useful Links
  • FAQ
  • Sponsor ❤
  • Edit this documentation
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  1. Guides

How to capture an application's audio

Screen sharing in browsers only allows for tab-audio or desktop-audio capture; not window.

PreviousHow to mirror a video while Full-Screen - For iPads and TelepromptersNextHow to control VDO.Ninja with Touch Portal

Last updated 2 months ago

Was this helpful?

This page contains the standard guide for capturing application-specific audio in Windows. Less complex methods are being developed, with some current .

Guide: Routing Windows application’s audio to

(For macOS users, you can use instead, or check out this list of free options: )

  • 1) Install the VB-Cable Virtual Audio device. ( can be used instead)

Tip: If you want to configure the VB Audio driver with custom settings, the recommended sample rate is 48000-hz, as that is the sample used by VDO.Ninja.

  • 2) Load up Window Mixer by typing in Mixer to the windows search bar:

  • 3) For the application you want, select the Output dropdown and select CABLE Input.

Other options

Using OBS to capture audio

While this option still requires a virtual audio cable, as seen above, you can use OBS to capture the application's audio and output the audio from OBS to the virtual cable via the Monitor output in OBS.

Publishing directly from OBS to VDO.Ninja

An alternative to using a virtual audio cable is to use OBS to capture the audio, and then publish the audio to VDO.Ninja directly using the WHIP-publishing mode.

4) We can now head over to , but we will want to add the advanced URL parameter to the web URL, which disables echo cancellation and other digital effects. It will make the audio sound better and echo cancellation is likely not needed if capturing from a Game or Application window. For example, You can also add this to the view link, which increases the audio quality even more. For example,

5) In VDO.Ninja, select the Cable Output device. Tip: If you hold down CTRL (Command) while selecting inputs, you can select more than one at a time.

6) A simple way to hear the audio as an output is to just unmute the video. Right-click and show the controls, if not visible, then unmute.

7) Alternatively, you can also use the Sound properties for the VB cable to “listen to this device” in Windows, so you can hear the audio even if not in VDO.Ninja. This method might have lower latency than the method in step 6.

is an experimental feature currently in OBS and may require a special version of OBS at the moment to access, but it might be included in OBS by default with the release of OBS v30 or v31.

Check out a demo YouTube video of how to accomplish this: More details will be provided as the feature develops.

https://vdo.ninja
&proaudio
https://vdo.ninja/?push=myStreamID&proaudio
https://vdo.ninja/?view=myStreamID&proaudio
WHIP
Publishing from OBS directly to VDO.Ninja
VDO.Ninja
Loopback by Roguemedia
https://docs.vdo.ninja/platform-specific-issues/macos#capturing-audio
Voicemeeter
https://www.vb-audio.com/Cable/
alternative options listed here
Using WHIP to publish to VDO.Ninja directly from OBS
Another way of selecting application audio for the Virtual Audio Cable