:
check the device permission:
<code>$ ls -l /dev/video0
crw-rw—- 1 root video 81, 0 2008-01-27 08:10 /dev/video0</code>
Device video0 running with user group video,so u should change the permission:
<code>$ sudo chmo
Motion-JPEG Webcam mit WLAN]]
general uvc (USB Video Class UVC)
video4linux
<code>
ls -ltr /dev/video*
mplayer tv:// -tv driver=v4l2:width=640:height=480:device=/dev/video0 -fps 30
</code>