[Bug 257624] multimedia/obs-studio: Fails to detect v4l2loopback

From: <bugzilla-noreply_at_freebsd.org>
Date: Wed, 04 Aug 2021 19:21:53 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=257624

            Bug ID: 257624
           Summary: multimedia/obs-studio: Fails to detect v4l2loopback
           Product: Ports & Packages
           Version: Latest
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: Individual Port(s)
          Assignee: yuri@freebsd.org
          Reporter: fbsd-bugzilla@schlachter.ca
             Flags: maintainer-feedback?(yuri@freebsd.org)
          Assignee: yuri@freebsd.org

webcamd recently added support for v4l2loopback in FreeBSD
(https://github.com/hselasky/webcamd/pull/9). It is now possible to create a
v4l2loopback device:

    # webcamd -c v4l2loopback
    webcamd 74613 - - Creating /dev/video0

However, when OBS starts, it does not detect it and disables the virtual camera
plugin:

    $ obs
    ...
    warning: v4l2loopback not installed, virtual camera disabled

Expected behavior is that OBS would detect the presence of v4l2loopback (via
webcamd) and enable the virtual camera if it is present.

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