:
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
or WEITEK 0x100e Weitek
vendor VIDEOLOGIC 0x1010 Video Logic
vendor DEC 0x1011 Digital Equipment
vendor... stone Technology
vendor UNITEDVIDEO 0x11b6 United Video
vendor MOT2 0x11b7 Motorola (2nd PCI Vendor ID)
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>