I am running into same issues with cef_binary_85.2.11+g0202816+chromium-85.0.4183.83_windows64_client from (
http://opensource.spotify.com/cefbuilds ... nt.tar.bz2)
Steps to repro:
1) Get standalone cefclient.exe from above link
2) cefclient.exe --enable-media-stream --enable-usermedia-screen-capturing --url=https://www.webrtc-experiment.com/Pluginfree-Screen-Sharing/
3) Click on "Share your screen". You will see the error.
4) Reload the page. Right click on page and click on "Show DevTools Console". In console, type below code :
navigator.mediaDevices.getDisplayMedia({video: true}).then(stream => {
onGettingSteam(stream);
}, getDisplayMediaError).catch(function(error){console.log(error);});
You will see the same error
I can see similar issue raised here :
https://bitbucket.org/chromiumembedded/ ... sed-screenWhat am I missing? Are there any other flags required?