[Bug 666146] gstreamer v4l2src fails with device=

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=666146
  GStreamer | gst-plugins-good | 0.10.30

--- Comment #3 from bugzilla at anarres.org 2011-12-28 19:26:49 UTC ---
shevek at shadow:~$ v4l2-ctl -n -N
ioctl: VIDIOC_ENUMINPUT
        Input       : 0
        Name        : Camera 1
        Type        : 0x00000002
        Audioset    : 0x00000000
        Tuner       : 0x00000000
        Standard    : 0x0000000000000000 ()
        Status      : 0x00000000 (ok)
        Capabilities: 0x00000000 (not defined)
ioctl: VIDIOC_ENUMOUTPUT

shevek at shadow:~$ ls -l /dev/video*
crw-rw----+ 1 root video 81, 0 2011-12-16 15:39 /dev/video0
shevek at shadow:~$ id
uid=1000(shevek) gid=1000(shevek)
groups=1000(shevek),4(adm),20(dialout),24(cdrom),46(plugdev),111(lpadmin),119(admin),122(sambashare)

Putting myself in the video group makes no difference.

This works: v4l2src  ! ffmpegcolorspace ! xvimagesink
This does not work: v4l2src device=/dev/video0 num-buffers=1 ! ffmpegcolorspace
! xvimagesink

However, in all the cases where I say "does not work", the green camera LED
flashes before the pipeline breaks.

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