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Comment by joecot | Hacker News Reader

I think you led me to the problem. I updated the original comment, but I think the issue was that v4l2loopback was being loaded without any options and screwing me up, so rmmod ing it and reloading it seems to help

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You can set default module options through a file in /etc/modprobe.d/. If you're using systemd, it can also be configured to load the module automatically on startup. This is what I'm using:

/etc/modprobe.d/v4l2loopback.conf:

    options v4l2loopback devices=1 video_nr=10 card_label="OBS Cam" exclusive_caps=1

/etc/modules-load.d/v4l2loopback.conf:

    v4l2loopback

Working flawlessly so far in Hangouts and Zoom using OBS Studio and the obs-v4lsink plugin.

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