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Is there a way to apply chroma key live to a stream that's used in video conferencing. Webcam works fine though v4l (Cheese, Ekiga).

This but in Linux.

Community
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user89897
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    Found this: https://code.google.com/p/webcamstudio. It hasn't been recently updated, which is less important, and it's not in the repo for Ubuntu. I'd prefer a solution that is. – user89897 Oct 31 '14 at 18:19
  • The [ffmpeg-specific solution](http://stackoverflow.com/questions/8299252/ffmpeg-chroma-key-greenscreen-filter-for-images-video) might be adaptable for this purpose, though you might need to pipe that further on to [v4l2loopback](http://superuser.com/questions/411897/using-desktop-as-fake-webcam-on-linux) to get the composited image showing up as a webcam. – Anko - inactive in protest Dec 06 '15 at 22:34

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I use OBS with obs-v4l2sink, and v4l2loopback. I had to build all that (including OBS) from source to get it working in Fedora, but it works.

manithree
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Due to the increased usage of video conferencing in 2020, the already very powerful WebCamoid has recently been upgraded to do exactly what you are asking for. Note though that you need to build it on your own from the github repository, the changes are not yet live in the latest released builds.

Alf
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