No webcam in chrome (works in firefox)

[Frederic Chardon]

Le ven. 9 août 2019 à 06:26, Frederic Chardon
<chardon.frederic at gmail.com> a écrit :
>
> Le jeu. 8 août 2019 à 20:36, Jan Beich <jbeich at freebsd.org> a écrit :
> >
> > (redirecting to a better list)
> >
> > Frederic Chardon <chardon.frederic at gmail.com> writes:
> >
> > > Hi
> > >
> > > I can't make chrome to recognize my webcam. webcamd is running, pwcview,
> > > firefox or mpv all works
> > > Ports are at revision 507476 and base at 350255 (amd64).
> > >
> > > There is no camera listed in chrome://media-internals and typing
> > > "navigator.mediaDevices.getUserMedia({video:true});" in the javascript
> > > console throw a NotFoundError.
> > >
> > > ktrace shows that open() succeed
> > >  83513 chrome   CALL  openat(AT_FDCWD,0x81812d101,0<O_RDONLY>)
> > >  83513 chrome   NAMI  "/dev/video0"
> > >  83513 chrome   RET   openat 159/0x9f
> > >  83513 chrome   CALL  ioctl(0x9f,0x40685600,0x7fffde9f2aa8)
> >
> > 0x40685600 is probably VIDIOC_QUERYCAP, used by Chromium in a number of places.
> > https://cs.chromium.org/search/?q=VIDIOC_QUERYCAP
> >
> > Firefox also uses VIDIOC_QUERYCAP but doesn't seem to check capabilities.
> > https://searchfox.org/mozilla-central/search?q=VIDIOC_QUERYCAP
> >
> > >  83513 chrome   RET   ioctl 0
> > >  83513 chrome   CALL  close(0x9f)
> > >  83513 chrome   RET   close 0
> > >
> > > So this is rather not a permission issue (and anyway, the other programs
> > > all work)
> >
> > Can you show output from the following? I don't have a camera, so no
> > clue which capabilities Chromium wants.
> >
> > $ cat a.c
> > #include <linux/videodev2.h>
> > #include <err.h>
> > #include <fcntl.h>
> >
> > int main(void)
> > {
> >     int fd;
> >     if ((fd = open("/dev/video0", O_RDWR)) == -1)
> >         err(1, "failed to open /dev/video0");
> >
> >     struct v4l2_capability cap = {};
> >     if (ioctl(fd, VIDIOC_QUERYCAP, &cap) == -1)
> >         err(1, "VIDIOC_QUERYCAP failed");
> >
> >     warnx("/dev/video0 capabilities: %#x", cap.capabilities);
> >     if (!(cap.capabilities & V4L2_CAP_VIDEO_CAPTURE))
> >         warnx("V4L2_CAP_VIDEO_CAPTURE is missing");
> >     if (cap.capabilities & V4L2_CAP_VIDEO_OUTPUT)
> >         warnx("V4L2_CAP_VIDEO_OUTPUT is present, not allowed for delegation");
> >     if (!(cap.capabilities & V4L2_CAP_STREAMING))
> >         warnx("V4L2_CAP_STREAMING is missing");
> >     if (!(cap.capabilities & V4L2_CAP_VIDEO_M2M_MPLANE))
> >         warnx("V4L2_CAP_VIDEO_M2M_MPLANE is missing, required for streaming");
> >
> >     return 0;
> > }
> >
> > $ pkg install v4l_compat
> > $ cc a.c -isystem/usr/local/include
> > $ ./a.out
> >
>
> a.out: /dev/video0 capabilities: 0x84a00001
> a.out: V4L2_CAP_VIDEO_M2M_MPLANE is missing, required for streaming
>
> >
> > > Is it a known issue? Or am I missing something?
> > > Thanks
> >
> > Did previous www/chromium major versions work fine?
>
> No idea, I only recently (~2 weeks) started needing a webcam.
>
> Thanks!

I updated to latest version, no change. Can someone confirm that
webcam works for them under chromium?

Thanks