Spent half the night to wrap my head around this and finally getting somewhere with and and a loopback device so I can stream this "as fake webcam" over WebRTC in video conferences.

Getting this to run (and smooth!) on was a PITA. Who would have guessed. And all because I don't want a "streaming" service or some gorram gold membership in a specific video conference "app".

Expect an article!

@bekopharm I did this a few weeks back and have been using v4l2loopback with OBS to get a higher fps screenshare through Jitsi, working very well :)
Which part was a pain in the ass to you?

@unicorn v4l2loopback is indeed in use (awesome btw - fiddled with it in 2017 already using my action cam as webcam: beko.famkos.net/2017/10/27/son ) but(!) most WebRTC access out there is… flaky at best.

It e.g. always works on webcamtests.com/ but on test.webrtc.org/ basically only when I run FF with new/blank tmp profile reliable.

It does detect my devices but somehow never asks permission for any device but my first "two" cameras probably not liking the "features" (codec is fine).

@unicorn Also I tried to run without obs-v4l2sink that has to be compiled before too by using a ffmpeg stream but that's so slow…

Puzzling all this together is not userfriendly at all.

I can do it. Joe Webuser? Unlikely.

@bekopharm I agree it's not super consistent, I remember seeing an alternative to v4l2loopback and a chart showing some applications in which either do/don't work. You might also want to give one of the options mentioned on the GitHub a try that is supposed to enable compatibility with chrome/chromium based things. It's mentioned somewhere in the readme :)

The need to self-compile is definitely a barrier, but these two were easier than most things I have attempted to compile.

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@bekopharm Overall it's not optimal, but possible in not too much time. It just has a bit of an entry barrier for people who don't mess with their system very much.

Still it was a breeze compared to my attempts to route desktop audio and microphone into a single virtual input device so that the other person can hear things I am hearing 😄
That took me several attempts over the span of a couple of months. Spent like 4 days figuring it out overall, giving up multiple times 😅

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