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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  • Details
  • Example links and Resources
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  1. Advanced Options (URL Parameters)
  2. Settings Parameters

&closedcaptions

Enables displaying of closed captioning text

Previous&slotNext&nocaptionlabels

Last updated 1 year ago

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Viewer-Side Option! (, , )

Aliases

  • &captions

  • &cc

Details

This command will display the incoming transcribed text-data as an overlay. You will need to use this on the VIEW link, while also using the command on the PUSH link.

See video for a walk-thru:

body {
  background-color: rgba(0, 0, 0, 0); margin: 0px auto; overflow: hidden;
}

@font-face {
  font-family: 'opendyslexic';
	src: url('https://vdo.ninja/examples/OpenDyslexic-Regular.otf');
	font-style: normal;
	font-weight: normal;
} 

#overlayMsgs {
	font-family: "opendyslexic", opendyslexic, serif;
}

Another example of limiting the captioning-text to only use a fixed height of space when used as an overlay to OBS browser source. Just replace the OBS browser style with this code snippet instead:

body { background-color: rgba(0, 0, 0, 0); margin: 0px auto; overflow: hidden; }

#overlayMsgs{
    overflow: auto!important;
    display: flex!important;
    flex-direction: column-reverse!important;
    height: 240px!important;
}

#overlayMsgs span {
    text-align: left!important;
}

&base64css=I292ZXJsYXlNc2dzew0KICAgIG92ZXJmbG93OiBhdXRvIWltcG9ydGFudDsNCiAgICBkaXNwbGF5OiBmbGV4IWltcG9ydGFudDsNCiAgICBmbGV4LWRpcmVjdGlvbjogY29sdW1uLXJldmVyc2UhaW1wb3J0YW50Ow0KICAgIGhlaWdodDogMjQwcHghaW1wb3J0YW50Ow0KfQ0KDQojb3ZlcmxheU1zZ3Mgc3BhbiB7DQogICAgdGV4dC1hbGlnbjogbGVmdCFpbXBvcnRhbnQ7DQp9

Feedback and user requests are welcomed.

Example links and Resources

Related

Overlay text data is pulled from the source with added.

can be used to adjust the overlay font-size. 100% is default;

Use can use to further customize the CSS style, or do so in the OBS Browser source style sheet area. You can also set the CSS via a base64 encoded string in the URL, via the parameter. An example of a custom stylesheet for OBS that changes the font-family of the overlay text is the is the following:

If not using OBS, you can still add the above CSS via the URL using the parameter. For example, instead of the above CSS, you can append the following to the URL:

&transcribe
&fontsize={percent}
&css=somecssfile.css
&base64css
&base64css
https://vdo.ninja/?transcribe
https://vdo.ninja/?view=abc123&closedcaptions
https://meyerweb.com/eric/tools/dencoder/
https://vdo.ninja/examples/rainbow.css
https://vdo.ninja/?css=https%3A%2F%2Fvdo.ninja%2Fexamples%2Frainbow.css
&css
&transcribe
&view
&scene
&room
&transcribe